<?xml version="1.0" encoding="UTF-8"?>

<!--XBRL Document Created with the Workiva Platform-->
<!--Copyright 2026 Workiva-->
<!--r:01a087ea-1517-79b5-a1b2-46b2acc099c7,g:835c6e9a-eb66-44ad-b129-47954ce02bc3-->
<link:linkbase xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xbrldt="http://xbrl.org/2005/xbrldt" xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd">
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/all" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#all"/>
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#hypercube-dimension"/>
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#dimension-default"/>
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#dimension-domain"/>
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/domain-member" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#domain-member"/>
  <link:roleRef roleURI="http://www.boh.com/role/Coverpage" xlink:type="simple" xlink:href="boh-20260930.xsd#Coverpage"/>
  <link:definitionLink xlink:role="http://www.boh.com/role/Coverpage" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityInformationLineItems_01a087ea-1a4f-7bad-afe9-7c8c0017b086" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityInformationLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntitiesTable_01a087ea-1a4f-7423-aa41-367da608d718" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntitiesTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_dei_EntityInformationLineItems_01a087ea-1a4f-7bad-afe9-7c8c0017b086" xlink:to="loc_dei_EntitiesTable_01a087ea-1a4f-7423-aa41-367da608d718" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementClassOfStockAxis_01a087ea-1a4f-7a13-adb9-3ee87792c0f4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementClassOfStockAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_dei_EntitiesTable_01a087ea-1a4f-7423-aa41-367da608d718" xlink:to="loc_us-gaap_StatementClassOfStockAxis_01a087ea-1a4f-7a13-adb9-3ee87792c0f4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfStockDomain_01a087ea-1a4f-7a13-adb9-3ee87792c0f4_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ClassOfStockDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementClassOfStockAxis_01a087ea-1a4f-7a13-adb9-3ee87792c0f4" xlink:to="loc_us-gaap_ClassOfStockDomain_01a087ea-1a4f-7a13-adb9-3ee87792c0f4_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfStockDomain_01a087ea-1a4f-7719-89f0-3528a8e1506e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ClassOfStockDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementClassOfStockAxis_01a087ea-1a4f-7a13-adb9-3ee87792c0f4" xlink:to="loc_us-gaap_ClassOfStockDomain_01a087ea-1a4f-7719-89f0-3528a8e1506e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockMember_01a087ea-1a4f-7045-8a35-d51d1ae70a88" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommonStockMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockDomain_01a087ea-1a4f-7719-89f0-3528a8e1506e" xlink:to="loc_us-gaap_CommonStockMember_01a087ea-1a4f-7045-8a35-d51d1ae70a88" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SeriesAPreferredStockMember_01a087ea-1a4f-70a3-8c37-8033104523ac" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SeriesAPreferredStockMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockDomain_01a087ea-1a4f-7719-89f0-3528a8e1506e" xlink:to="loc_us-gaap_SeriesAPreferredStockMember_01a087ea-1a4f-70a3-8c37-8033104523ac" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SeriesBPreferredStockMember_01a087ea-1a4f-7ffa-86a7-0f6e37f622c1" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SeriesBPreferredStockMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockDomain_01a087ea-1a4f-7719-89f0-3528a8e1506e" xlink:to="loc_us-gaap_SeriesBPreferredStockMember_01a087ea-1a4f-7ffa-86a7-0f6e37f622c1" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentType_01a087ea-1a4f-72f4-8080-ebb2c787f91d" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_DocumentType"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityInformationLineItems_01a087ea-1a4f-7bad-afe9-7c8c0017b086" xlink:to="loc_dei_DocumentType_01a087ea-1a4f-72f4-8080-ebb2c787f91d" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentQuarterlyReport_01a087ea-1a4f-76e6-b33b-c57ced04438d" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_DocumentQuarterlyReport"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityInformationLineItems_01a087ea-1a4f-7bad-afe9-7c8c0017b086" xlink:to="loc_dei_DocumentQuarterlyReport_01a087ea-1a4f-76e6-b33b-c57ced04438d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentPeriodEndDate_01a087ea-1a4f-7041-9021-d94c1a23d4bc" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_DocumentPeriodEndDate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityInformationLineItems_01a087ea-1a4f-7bad-afe9-7c8c0017b086" xlink:to="loc_dei_DocumentPeriodEndDate_01a087ea-1a4f-7041-9021-d94c1a23d4bc" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentTransitionReport_01a087ea-1a4f-75a0-b6f9-0775536922e5" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_DocumentTransitionReport"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityInformationLineItems_01a087ea-1a4f-7bad-afe9-7c8c0017b086" xlink:to="loc_dei_DocumentTransitionReport_01a087ea-1a4f-75a0-b6f9-0775536922e5" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityFileNumber_01a087ea-1a4f-755f-881a-24698e2baddb" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityFileNumber"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityInformationLineItems_01a087ea-1a4f-7bad-afe9-7c8c0017b086" xlink:to="loc_dei_EntityFileNumber_01a087ea-1a4f-755f-881a-24698e2baddb" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityRegistrantName_01a087ea-1a4f-76ca-b345-97c4d463a60f" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityRegistrantName"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityInformationLineItems_01a087ea-1a4f-7bad-afe9-7c8c0017b086" xlink:to="loc_dei_EntityRegistrantName_01a087ea-1a4f-76ca-b345-97c4d463a60f" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityIncorporationStateCountryCode_01a087ea-1a4f-7b24-ba42-bbbd204dd96b" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityIncorporationStateCountryCode"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityInformationLineItems_01a087ea-1a4f-7bad-afe9-7c8c0017b086" xlink:to="loc_dei_EntityIncorporationStateCountryCode_01a087ea-1a4f-7b24-ba42-bbbd204dd96b" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityTaxIdentificationNumber_01a087ea-1a4f-70a7-866c-ad2451cc0a5d" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityTaxIdentificationNumber"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityInformationLineItems_01a087ea-1a4f-7bad-afe9-7c8c0017b086" xlink:to="loc_dei_EntityTaxIdentificationNumber_01a087ea-1a4f-70a7-866c-ad2451cc0a5d" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressAddressLine1_01a087ea-1a4f-75e4-9e0e-1e10b7655c1d" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityAddressAddressLine1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityInformationLineItems_01a087ea-1a4f-7bad-afe9-7c8c0017b086" xlink:to="loc_dei_EntityAddressAddressLine1_01a087ea-1a4f-75e4-9e0e-1e10b7655c1d" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressCityOrTown_01a087ea-1a4f-7440-87f5-b474ba4c2dbe" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityAddressCityOrTown"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityInformationLineItems_01a087ea-1a4f-7bad-afe9-7c8c0017b086" xlink:to="loc_dei_EntityAddressCityOrTown_01a087ea-1a4f-7440-87f5-b474ba4c2dbe" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressStateOrProvince_01a087ea-1a4f-7bc0-b988-ce6ee244f9a3" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityAddressStateOrProvince"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityInformationLineItems_01a087ea-1a4f-7bad-afe9-7c8c0017b086" xlink:to="loc_dei_EntityAddressStateOrProvince_01a087ea-1a4f-7bc0-b988-ce6ee244f9a3" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressPostalZipCode_01a087ea-1a4f-78b4-92a9-587416254451" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityAddressPostalZipCode"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityInformationLineItems_01a087ea-1a4f-7bad-afe9-7c8c0017b086" xlink:to="loc_dei_EntityAddressPostalZipCode_01a087ea-1a4f-78b4-92a9-587416254451" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_CityAreaCode_01a087ea-1a4f-7453-b450-07c7d5063df7" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_CityAreaCode"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityInformationLineItems_01a087ea-1a4f-7bad-afe9-7c8c0017b086" xlink:to="loc_dei_CityAreaCode_01a087ea-1a4f-7453-b450-07c7d5063df7" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LocalPhoneNumber_01a087ea-1a4f-7e63-8407-5a7ef6b0a300" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_LocalPhoneNumber"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityInformationLineItems_01a087ea-1a4f-7bad-afe9-7c8c0017b086" xlink:to="loc_dei_LocalPhoneNumber_01a087ea-1a4f-7e63-8407-5a7ef6b0a300" xlink:type="arc" order="13"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_Security12bTitle_01a087ea-1a4f-711b-b095-8ee1aa3a5b7f" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_Security12bTitle"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityInformationLineItems_01a087ea-1a4f-7bad-afe9-7c8c0017b086" xlink:to="loc_dei_Security12bTitle_01a087ea-1a4f-711b-b095-8ee1aa3a5b7f" xlink:type="arc" order="14"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_TradingSymbol_01a087ea-1a4f-7589-8fe3-facbbeff63f3" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_TradingSymbol"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityInformationLineItems_01a087ea-1a4f-7bad-afe9-7c8c0017b086" xlink:to="loc_dei_TradingSymbol_01a087ea-1a4f-7589-8fe3-facbbeff63f3" xlink:type="arc" order="15"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_SecurityExchangeName_01a087ea-1a4f-7e35-b888-755aef53a8ca" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_SecurityExchangeName"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityInformationLineItems_01a087ea-1a4f-7bad-afe9-7c8c0017b086" xlink:to="loc_dei_SecurityExchangeName_01a087ea-1a4f-7e35-b888-755aef53a8ca" xlink:type="arc" order="16"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityCurrentReportingStatus_01a087ea-1a4f-7e03-bcfd-35468110d2f2" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityCurrentReportingStatus"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityInformationLineItems_01a087ea-1a4f-7bad-afe9-7c8c0017b086" xlink:to="loc_dei_EntityCurrentReportingStatus_01a087ea-1a4f-7e03-bcfd-35468110d2f2" xlink:type="arc" order="17"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityInteractiveDataCurrent_01a087ea-1a4f-7767-a12e-190d1ebf1531" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityInteractiveDataCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityInformationLineItems_01a087ea-1a4f-7bad-afe9-7c8c0017b086" xlink:to="loc_dei_EntityInteractiveDataCurrent_01a087ea-1a4f-7767-a12e-190d1ebf1531" xlink:type="arc" order="18"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityFilerCategory_01a087ea-1a4f-7dbb-85b6-023a12f71096" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityFilerCategory"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityInformationLineItems_01a087ea-1a4f-7bad-afe9-7c8c0017b086" xlink:to="loc_dei_EntityFilerCategory_01a087ea-1a4f-7dbb-85b6-023a12f71096" xlink:type="arc" order="19"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntitySmallBusiness_01a087ea-1a4f-74ba-a573-0b780d917140" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntitySmallBusiness"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityInformationLineItems_01a087ea-1a4f-7bad-afe9-7c8c0017b086" xlink:to="loc_dei_EntitySmallBusiness_01a087ea-1a4f-74ba-a573-0b780d917140" xlink:type="arc" order="20"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityEmergingGrowthCompany_01a087ea-1a4f-7538-947f-475e2de1a372" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityEmergingGrowthCompany"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityInformationLineItems_01a087ea-1a4f-7bad-afe9-7c8c0017b086" xlink:to="loc_dei_EntityEmergingGrowthCompany_01a087ea-1a4f-7538-947f-475e2de1a372" xlink:type="arc" order="21"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityShellCompany_01a087ea-1a4f-7142-9d6c-e0b52d3b619a" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityShellCompany"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityInformationLineItems_01a087ea-1a4f-7bad-afe9-7c8c0017b086" xlink:to="loc_dei_EntityShellCompany_01a087ea-1a4f-7142-9d6c-e0b52d3b619a" xlink:type="arc" order="22"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityCommonStockSharesOutstanding_01a087ea-1a4f-74a2-bb02-2d92c5dc13a1" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityCommonStockSharesOutstanding"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityInformationLineItems_01a087ea-1a4f-7bad-afe9-7c8c0017b086" xlink:to="loc_dei_EntityCommonStockSharesOutstanding_01a087ea-1a4f-74a2-bb02-2d92c5dc13a1" xlink:type="arc" order="23"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_AmendmentFlag_01a087ea-1a4f-7770-ab75-8f28368132f5" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_AmendmentFlag"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityInformationLineItems_01a087ea-1a4f-7bad-afe9-7c8c0017b086" xlink:to="loc_dei_AmendmentFlag_01a087ea-1a4f-7770-ab75-8f28368132f5" xlink:type="arc" order="24"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_CurrentFiscalYearEndDate_01a087ea-1a4f-78fe-8f27-047c65a3291a" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_CurrentFiscalYearEndDate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityInformationLineItems_01a087ea-1a4f-7bad-afe9-7c8c0017b086" xlink:to="loc_dei_CurrentFiscalYearEndDate_01a087ea-1a4f-78fe-8f27-047c65a3291a" xlink:type="arc" order="25"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentFiscalYearFocus_01a087ea-1a4f-7026-8e32-bc1536570f7e" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_DocumentFiscalYearFocus"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityInformationLineItems_01a087ea-1a4f-7bad-afe9-7c8c0017b086" xlink:to="loc_dei_DocumentFiscalYearFocus_01a087ea-1a4f-7026-8e32-bc1536570f7e" xlink:type="arc" order="26"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentFiscalPeriodFocus_01a087ea-1a4f-7d02-9508-8c923117814e" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_DocumentFiscalPeriodFocus"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityInformationLineItems_01a087ea-1a4f-7bad-afe9-7c8c0017b086" xlink:to="loc_dei_DocumentFiscalPeriodFocus_01a087ea-1a4f-7d02-9508-8c923117814e" xlink:type="arc" order="27"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityCentralIndexKey_01a087ea-1a4f-7f6a-958d-c42dcbb21d25" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityCentralIndexKey"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityInformationLineItems_01a087ea-1a4f-7bad-afe9-7c8c0017b086" xlink:to="loc_dei_EntityCentralIndexKey_01a087ea-1a4f-7f6a-958d-c42dcbb21d25" xlink:type="arc" order="28"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.boh.com/role/ConsolidatedStatementsofConditionUnaudited" xlink:type="simple" xlink:href="boh-20260930.xsd#ConsolidatedStatementsofConditionUnaudited"/>
  <link:definitionLink xlink:role="http://www.boh.com/role/ConsolidatedStatementsofConditionUnaudited" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementLineItems_01a087ea-1a4f-7557-8eca-1900f82cdc84" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementTable_01a087ea-1a4f-7ec4-8f36-d1fea1407ad1" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_01a087ea-1a4f-7557-8eca-1900f82cdc84" xlink:to="loc_us-gaap_StatementTable_01a087ea-1a4f-7ec4-8f36-d1fea1407ad1" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementClassOfStockAxis_01a087ea-1a4f-7af3-9132-64d89f075a37" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementClassOfStockAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_01a087ea-1a4f-7ec4-8f36-d1fea1407ad1" xlink:to="loc_us-gaap_StatementClassOfStockAxis_01a087ea-1a4f-7af3-9132-64d89f075a37" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfStockDomain_01a087ea-1a4f-7af3-9132-64d89f075a37_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ClassOfStockDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementClassOfStockAxis_01a087ea-1a4f-7af3-9132-64d89f075a37" xlink:to="loc_us-gaap_ClassOfStockDomain_01a087ea-1a4f-7af3-9132-64d89f075a37_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfStockDomain_01a087ea-1a4f-7db1-bde8-66e88d67ccea" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ClassOfStockDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementClassOfStockAxis_01a087ea-1a4f-7af3-9132-64d89f075a37" xlink:to="loc_us-gaap_ClassOfStockDomain_01a087ea-1a4f-7db1-bde8-66e88d67ccea" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SeriesAPreferredStockMember_01a087ea-1a4f-7ee8-895e-c254f2b1dea3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SeriesAPreferredStockMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockDomain_01a087ea-1a4f-7db1-bde8-66e88d67ccea" xlink:to="loc_us-gaap_SeriesAPreferredStockMember_01a087ea-1a4f-7ee8-895e-c254f2b1dea3" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SeriesBPreferredStockMember_01a087ea-1a4f-7ffe-a863-42b15fccfbc7" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SeriesBPreferredStockMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockDomain_01a087ea-1a4f-7db1-bde8-66e88d67ccea" xlink:to="loc_us-gaap_SeriesBPreferredStockMember_01a087ea-1a4f-7ffe-a863-42b15fccfbc7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsAbstract_01a087ea-1a4f-7955-b47d-e1aecf2db01d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AssetsAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_01a087ea-1a4f-7557-8eca-1900f82cdc84" xlink:to="loc_us-gaap_AssetsAbstract_01a087ea-1a4f-7955-b47d-e1aecf2db01d" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestBearingDepositsInBanks_01a087ea-1a4f-7f92-8097-d7a7f00b181a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InterestBearingDepositsInBanks"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_01a087ea-1a4f-7955-b47d-e1aecf2db01d" xlink:to="loc_us-gaap_InterestBearingDepositsInBanks_01a087ea-1a4f-7f92-8097-d7a7f00b181a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MarketableSecuritiesAbstract_01a087ea-1a4f-795c-9177-4d15dd4475cf" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_MarketableSecuritiesAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_01a087ea-1a4f-7955-b47d-e1aecf2db01d" xlink:to="loc_us-gaap_MarketableSecuritiesAbstract_01a087ea-1a4f-795c-9177-4d15dd4475cf" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSaleExcludingAccruedInterest_01a087ea-1a4f-794c-8963-afce10690b46" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtSecuritiesAvailableForSaleExcludingAccruedInterest"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MarketableSecuritiesAbstract_01a087ea-1a4f-795c-9177-4d15dd4475cf" xlink:to="loc_us-gaap_DebtSecuritiesAvailableForSaleExcludingAccruedInterest_01a087ea-1a4f-794c-8963-afce10690b46" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesHeldToMaturityExcludingAccruedInterestAfterAllowanceForCreditLoss_01a087ea-1a4f-7f46-988d-e4bff56392bc" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtSecuritiesHeldToMaturityExcludingAccruedInterestAfterAllowanceForCreditLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MarketableSecuritiesAbstract_01a087ea-1a4f-795c-9177-4d15dd4475cf" xlink:to="loc_us-gaap_DebtSecuritiesHeldToMaturityExcludingAccruedInterestAfterAllowanceForCreditLoss_01a087ea-1a4f-7f46-988d-e4bff56392bc" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LoansReceivableHeldForSaleNetNotPartOfDisposalGroup_01a087ea-1a4f-76a7-8227-d079d4547f87" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LoansReceivableHeldForSaleNetNotPartOfDisposalGroup"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_01a087ea-1a4f-7955-b47d-e1aecf2db01d" xlink:to="loc_us-gaap_LoansReceivableHeldForSaleNetNotPartOfDisposalGroup_01a087ea-1a4f-76a7-8227-d079d4547f87" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss_01a087ea-1a4f-73b6-af39-267e52fe24f4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_01a087ea-1a4f-7955-b47d-e1aecf2db01d" xlink:to="loc_us-gaap_FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss_01a087ea-1a4f-73b6-af39-267e52fe24f4" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest_01a087ea-1a4f-77f4-b2d3-b712bf023988" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_01a087ea-1a4f-7955-b47d-e1aecf2db01d" xlink:to="loc_us-gaap_FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest_01a087ea-1a4f-77f4-b2d3-b712bf023988" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NotesReceivableNet_01a087ea-1a4f-7812-95b9-90c5601f5679" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NotesReceivableNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_01a087ea-1a4f-7955-b47d-e1aecf2db01d" xlink:to="loc_us-gaap_NotesReceivableNet_01a087ea-1a4f-7812-95b9-90c5601f5679" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentNet_01a087ea-1a4f-732d-889a-48450904a466" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PropertyPlantAndEquipmentNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_01a087ea-1a4f-7955-b47d-e1aecf2db01d" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentNet_01a087ea-1a4f-732d-889a-48450904a466" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseRightOfUseAsset_01a087ea-1a4f-7580-9587-5fb69c4629db" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OperatingLeaseRightOfUseAsset"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_01a087ea-1a4f-7955-b47d-e1aecf2db01d" xlink:to="loc_us-gaap_OperatingLeaseRightOfUseAsset_01a087ea-1a4f-7580-9587-5fb69c4629db" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestReceivable_01a087ea-1a4f-7a26-a872-312eaafd7905" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InterestReceivable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_01a087ea-1a4f-7955-b47d-e1aecf2db01d" xlink:to="loc_us-gaap_InterestReceivable_01a087ea-1a4f-7a26-a872-312eaafd7905" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ServicingAsset_01a087ea-1a4f-7c3d-99a3-1ff9804ab8ca" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ServicingAsset"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_01a087ea-1a4f-7955-b47d-e1aecf2db01d" xlink:to="loc_us-gaap_ServicingAsset_01a087ea-1a4f-7c3d-99a3-1ff9804ab8ca" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Goodwill_01a087ea-1a4f-7391-877c-124db351ed72" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_Goodwill"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_01a087ea-1a4f-7955-b47d-e1aecf2db01d" xlink:to="loc_us-gaap_Goodwill_01a087ea-1a4f-7391-877c-124db351ed72" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BankOwnedLifeInsurance_01a087ea-1a4f-7749-ae8f-2cce812b1d6e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BankOwnedLifeInsurance"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_01a087ea-1a4f-7955-b47d-e1aecf2db01d" xlink:to="loc_us-gaap_BankOwnedLifeInsurance_01a087ea-1a4f-7749-ae8f-2cce812b1d6e" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherAssets_01a087ea-1a4f-7d95-8cc8-5dc76c603f96" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_01a087ea-1a4f-7955-b47d-e1aecf2db01d" xlink:to="loc_us-gaap_OtherAssets_01a087ea-1a4f-7d95-8cc8-5dc76c603f96" xlink:type="arc" order="13"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Assets_01a087ea-1a4f-700a-a64d-82036d15dc6f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_Assets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_01a087ea-1a4f-7955-b47d-e1aecf2db01d" xlink:to="loc_us-gaap_Assets_01a087ea-1a4f-700a-a64d-82036d15dc6f" xlink:type="arc" order="14"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesAbstract_01a087ea-1a4f-7498-a552-036715e76371" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LiabilitiesAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_01a087ea-1a4f-7557-8eca-1900f82cdc84" xlink:to="loc_us-gaap_LiabilitiesAbstract_01a087ea-1a4f-7498-a552-036715e76371" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DepositsAbstract_01a087ea-1a4f-72e3-9baa-5341a62c35fc" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DepositsAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAbstract_01a087ea-1a4f-7498-a552-036715e76371" xlink:to="loc_us-gaap_DepositsAbstract_01a087ea-1a4f-72e3-9baa-5341a62c35fc" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NoninterestBearingDepositLiabilities_01a087ea-1a50-7bd0-98e3-40cd3d4e95a8" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NoninterestBearingDepositLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DepositsAbstract_01a087ea-1a4f-72e3-9baa-5341a62c35fc" xlink:to="loc_us-gaap_NoninterestBearingDepositLiabilities_01a087ea-1a50-7bd0-98e3-40cd3d4e95a8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestBearingDepositLiabilities_01a087ea-1a50-7e38-9be3-33a6e0ad8d73" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InterestBearingDepositLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DepositsAbstract_01a087ea-1a4f-72e3-9baa-5341a62c35fc" xlink:to="loc_us-gaap_InterestBearingDepositLiabilities_01a087ea-1a50-7e38-9be3-33a6e0ad8d73" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DepositsSavingsDeposits_01a087ea-1a50-74e3-986a-14e46851a794" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DepositsSavingsDeposits"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DepositsAbstract_01a087ea-1a4f-72e3-9baa-5341a62c35fc" xlink:to="loc_us-gaap_DepositsSavingsDeposits_01a087ea-1a50-74e3-986a-14e46851a794" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TimeDeposits_01a087ea-1a50-741c-9bf3-db012a9a4e3b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_TimeDeposits"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DepositsAbstract_01a087ea-1a4f-72e3-9baa-5341a62c35fc" xlink:to="loc_us-gaap_TimeDeposits_01a087ea-1a50-741c-9bf3-db012a9a4e3b" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Deposits_01a087ea-1a50-7968-88e5-d3ba38740caf" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_Deposits"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DepositsAbstract_01a087ea-1a4f-72e3-9baa-5341a62c35fc" xlink:to="loc_us-gaap_Deposits_01a087ea-1a50-7968-88e5-d3ba38740caf" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SecuritiesSoldUnderAgreementsToRepurchase_01a087ea-1a50-74a3-b59d-83394ba29b42" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SecuritiesSoldUnderAgreementsToRepurchase"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAbstract_01a087ea-1a4f-7498-a552-036715e76371" xlink:to="loc_us-gaap_SecuritiesSoldUnderAgreementsToRepurchase_01a087ea-1a50-74a3-b59d-83394ba29b42" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtAndCapitalLeaseObligations_01a087ea-1a50-7073-bbef-c734215aa5fa" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongTermDebtAndCapitalLeaseObligations"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAbstract_01a087ea-1a4f-7498-a552-036715e76371" xlink:to="loc_us-gaap_LongTermDebtAndCapitalLeaseObligations_01a087ea-1a50-7073-bbef-c734215aa5fa" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseLiability_01a087ea-1a50-72a4-828e-7357de0ae7b3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OperatingLeaseLiability"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAbstract_01a087ea-1a4f-7498-a552-036715e76371" xlink:to="loc_us-gaap_OperatingLeaseLiability_01a087ea-1a50-72a4-828e-7357de0ae7b3" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesCurrentAndNoncurrent_01a087ea-1a50-7a44-97c3-68e0a387d75e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesCurrentAndNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAbstract_01a087ea-1a4f-7498-a552-036715e76371" xlink:to="loc_us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesCurrentAndNoncurrent_01a087ea-1a50-7a44-97c3-68e0a387d75e" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestPayableCurrentAndNoncurrent_01a087ea-1a50-7339-bb19-dd145abe6a9a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InterestPayableCurrentAndNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAbstract_01a087ea-1a4f-7498-a552-036715e76371" xlink:to="loc_us-gaap_InterestPayableCurrentAndNoncurrent_01a087ea-1a50-7339-bb19-dd145abe6a9a" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherLiabilities_01a087ea-1a50-7ed0-8ce5-c07eee5d9cf4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAbstract_01a087ea-1a4f-7498-a552-036715e76371" xlink:to="loc_us-gaap_OtherLiabilities_01a087ea-1a50-7ed0-8ce5-c07eee5d9cf4" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Liabilities_01a087ea-1a50-7354-a022-783787a34cce" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_Liabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAbstract_01a087ea-1a4f-7498-a552-036715e76371" xlink:to="loc_us-gaap_Liabilities_01a087ea-1a50-7354-a022-783787a34cce" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommitmentsAndContingencies_01a087ea-1a50-7241-bf95-df3660f62f84" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommitmentsAndContingencies"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_01a087ea-1a4f-7557-8eca-1900f82cdc84" xlink:to="loc_us-gaap_CommitmentsAndContingencies_01a087ea-1a50-7241-bf95-df3660f62f84" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquityAbstract_01a087ea-1a50-7eed-b604-90c5d614406e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockholdersEquityAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_01a087ea-1a4f-7557-8eca-1900f82cdc84" xlink:to="loc_us-gaap_StockholdersEquityAbstract_01a087ea-1a50-7eed-b604-90c5d614406e" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PreferredStockValue_01a087ea-1a50-79e4-8677-b7ca6ff66aea" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PreferredStockValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StockholdersEquityAbstract_01a087ea-1a50-7eed-b604-90c5d614406e" xlink:to="loc_us-gaap_PreferredStockValue_01a087ea-1a50-79e4-8677-b7ca6ff66aea" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockValue_01a087ea-1a50-7da8-b4fc-680ed134b58b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommonStockValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StockholdersEquityAbstract_01a087ea-1a50-7eed-b604-90c5d614406e" xlink:to="loc_us-gaap_CommonStockValue_01a087ea-1a50-7da8-b4fc-680ed134b58b" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdditionalPaidInCapitalCommonStock_01a087ea-1a50-7b23-bbdf-9e0ccf4fbca1" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AdditionalPaidInCapitalCommonStock"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StockholdersEquityAbstract_01a087ea-1a50-7eed-b604-90c5d614406e" xlink:to="loc_us-gaap_AdditionalPaidInCapitalCommonStock_01a087ea-1a50-7b23-bbdf-9e0ccf4fbca1" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_01a087ea-1a50-7df4-900e-a63faafa6567" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StockholdersEquityAbstract_01a087ea-1a50-7eed-b604-90c5d614406e" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_01a087ea-1a50-7df4-900e-a63faafa6567" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetainedEarningsAccumulatedDeficit_01a087ea-1a50-7779-aed1-ffed91f37c3e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RetainedEarningsAccumulatedDeficit"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StockholdersEquityAbstract_01a087ea-1a50-7eed-b604-90c5d614406e" xlink:to="loc_us-gaap_RetainedEarningsAccumulatedDeficit_01a087ea-1a50-7779-aed1-ffed91f37c3e" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TreasuryStockValue_01a087ea-1a50-77bc-8e91-71f8edbda792" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_TreasuryStockValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StockholdersEquityAbstract_01a087ea-1a50-7eed-b604-90c5d614406e" xlink:to="loc_us-gaap_TreasuryStockValue_01a087ea-1a50-77bc-8e91-71f8edbda792" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquity_01a087ea-1a50-733f-a95a-3092eaf57307" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockholdersEquity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StockholdersEquityAbstract_01a087ea-1a50-7eed-b604-90c5d614406e" xlink:to="loc_us-gaap_StockholdersEquity_01a087ea-1a50-733f-a95a-3092eaf57307" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesAndStockholdersEquity_01a087ea-1a50-7caa-ad6a-4fa1e545768e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LiabilitiesAndStockholdersEquity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_01a087ea-1a4f-7557-8eca-1900f82cdc84" xlink:to="loc_us-gaap_LiabilitiesAndStockholdersEquity_01a087ea-1a50-7caa-ad6a-4fa1e545768e" xlink:type="arc" order="4"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.boh.com/role/ConsolidatedStatementsofConditionUnauditedParenthetical" xlink:type="simple" xlink:href="boh-20260930.xsd#ConsolidatedStatementsofConditionUnauditedParenthetical"/>
  <link:definitionLink xlink:role="http://www.boh.com/role/ConsolidatedStatementsofConditionUnauditedParenthetical" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementLineItems_01a087ea-1a50-7dea-9e50-7ee4292d5231" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementTable_01a087ea-1a50-70d8-9186-3adb9d25798e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_01a087ea-1a50-7dea-9e50-7ee4292d5231" xlink:to="loc_us-gaap_StatementTable_01a087ea-1a50-70d8-9186-3adb9d25798e" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementClassOfStockAxis_01a087ea-1a50-73f1-9ed9-92508728d965" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementClassOfStockAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_01a087ea-1a50-70d8-9186-3adb9d25798e" xlink:to="loc_us-gaap_StatementClassOfStockAxis_01a087ea-1a50-73f1-9ed9-92508728d965" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfStockDomain_01a087ea-1a50-73f1-9ed9-92508728d965_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ClassOfStockDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementClassOfStockAxis_01a087ea-1a50-73f1-9ed9-92508728d965" xlink:to="loc_us-gaap_ClassOfStockDomain_01a087ea-1a50-73f1-9ed9-92508728d965_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfStockDomain_01a087ea-1a50-74ef-b0cc-81e99dbbfb08" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ClassOfStockDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementClassOfStockAxis_01a087ea-1a50-73f1-9ed9-92508728d965" xlink:to="loc_us-gaap_ClassOfStockDomain_01a087ea-1a50-74ef-b0cc-81e99dbbfb08" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SeriesAPreferredStockMember_01a087ea-1a50-7ad1-a4d2-50b432d32595" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SeriesAPreferredStockMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockDomain_01a087ea-1a50-74ef-b0cc-81e99dbbfb08" xlink:to="loc_us-gaap_SeriesAPreferredStockMember_01a087ea-1a50-7ad1-a4d2-50b432d32595" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SeriesBPreferredStockMember_01a087ea-1a50-7d0b-80ed-8d644a6ca161" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SeriesBPreferredStockMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockDomain_01a087ea-1a50-74ef-b0cc-81e99dbbfb08" xlink:to="loc_us-gaap_SeriesBPreferredStockMember_01a087ea-1a50-7d0b-80ed-8d644a6ca161" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HeldToMaturitySecuritiesFairValue_01a087ea-1a50-77cf-be14-1eb8482ea713" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_HeldToMaturitySecuritiesFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_01a087ea-1a50-7dea-9e50-7ee4292d5231" xlink:to="loc_us-gaap_HeldToMaturitySecuritiesFairValue_01a087ea-1a50-77cf-be14-1eb8482ea713" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PreferredStockParOrStatedValuePerShare_01a087ea-1a50-7b42-8c6f-102ea695131f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PreferredStockParOrStatedValuePerShare"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_01a087ea-1a50-7dea-9e50-7ee4292d5231" xlink:to="loc_us-gaap_PreferredStockParOrStatedValuePerShare_01a087ea-1a50-7b42-8c6f-102ea695131f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PreferredStockSharesAuthorized_01a087ea-1a50-71f4-8ad8-7d6dd468520b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PreferredStockSharesAuthorized"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_01a087ea-1a50-7dea-9e50-7ee4292d5231" xlink:to="loc_us-gaap_PreferredStockSharesAuthorized_01a087ea-1a50-71f4-8ad8-7d6dd468520b" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PreferredStockSharesIssued_01a087ea-1a50-7629-92bc-0b9048463c13" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PreferredStockSharesIssued"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_01a087ea-1a50-7dea-9e50-7ee4292d5231" xlink:to="loc_us-gaap_PreferredStockSharesIssued_01a087ea-1a50-7629-92bc-0b9048463c13" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PreferredStockSharesOutstanding_01a087ea-1a50-7963-aa19-fc0ea18078ae" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PreferredStockSharesOutstanding"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_01a087ea-1a50-7dea-9e50-7ee4292d5231" xlink:to="loc_us-gaap_PreferredStockSharesOutstanding_01a087ea-1a50-7963-aa19-fc0ea18078ae" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockParOrStatedValuePerShare_01a087ea-1a50-7196-b466-89969d79ba16" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommonStockParOrStatedValuePerShare"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_01a087ea-1a50-7dea-9e50-7ee4292d5231" xlink:to="loc_us-gaap_CommonStockParOrStatedValuePerShare_01a087ea-1a50-7196-b466-89969d79ba16" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockSharesAuthorized_01a087ea-1a50-7fd8-883b-4125a131d44f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommonStockSharesAuthorized"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_01a087ea-1a50-7dea-9e50-7ee4292d5231" xlink:to="loc_us-gaap_CommonStockSharesAuthorized_01a087ea-1a50-7fd8-883b-4125a131d44f" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockSharesIssued_01a087ea-1a50-7fea-b624-1b4458377ecc" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommonStockSharesIssued"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_01a087ea-1a50-7dea-9e50-7ee4292d5231" xlink:to="loc_us-gaap_CommonStockSharesIssued_01a087ea-1a50-7fea-b624-1b4458377ecc" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockSharesOutstanding_01a087ea-1a50-7ea0-9520-51f0bf8029a4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommonStockSharesOutstanding"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_01a087ea-1a50-7dea-9e50-7ee4292d5231" xlink:to="loc_us-gaap_CommonStockSharesOutstanding_01a087ea-1a50-7ea0-9520-51f0bf8029a4" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TreasuryStockCommonShares_01a087ea-1a50-7e62-b667-06f956685448" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_TreasuryStockCommonShares"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_01a087ea-1a50-7dea-9e50-7ee4292d5231" xlink:to="loc_us-gaap_TreasuryStockCommonShares_01a087ea-1a50-7e62-b667-06f956685448" xlink:type="arc" order="9"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.boh.com/role/ConsolidatedStatementsofShareholdersEquityUnaudited" xlink:type="simple" xlink:href="boh-20260930.xsd#ConsolidatedStatementsofShareholdersEquityUnaudited"/>
  <link:definitionLink xlink:role="http://www.boh.com/role/ConsolidatedStatementsofShareholdersEquityUnaudited" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementLineItems_01a087ea-1a50-7a4a-8d61-b7aebeca6199" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementTable_01a087ea-1a50-7944-8431-a11cd3ea0cfc" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_01a087ea-1a50-7a4a-8d61-b7aebeca6199" xlink:to="loc_us-gaap_StatementTable_01a087ea-1a50-7944-8431-a11cd3ea0cfc" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementEquityComponentsAxis_01a087ea-1a50-761f-b405-d017ddf9ca71" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementEquityComponentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_01a087ea-1a50-7944-8431-a11cd3ea0cfc" xlink:to="loc_us-gaap_StatementEquityComponentsAxis_01a087ea-1a50-761f-b405-d017ddf9ca71" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_01a087ea-1a50-761f-b405-d017ddf9ca71_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EquityComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_01a087ea-1a50-761f-b405-d017ddf9ca71" xlink:to="loc_us-gaap_EquityComponentDomain_01a087ea-1a50-761f-b405-d017ddf9ca71_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_01a087ea-1a50-7882-83c7-c898cfd731ab" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EquityComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_01a087ea-1a50-761f-b405-d017ddf9ca71" xlink:to="loc_us-gaap_EquityComponentDomain_01a087ea-1a50-7882-83c7-c898cfd731ab" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PreferredStockMember_01a087ea-1a50-778b-97fe-56326f670504" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PreferredStockMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_01a087ea-1a50-7882-83c7-c898cfd731ab" xlink:to="loc_us-gaap_PreferredStockMember_01a087ea-1a50-778b-97fe-56326f670504" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockMember_01a087ea-1a50-70bc-9580-d4fe6b47a92d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommonStockMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_01a087ea-1a50-7882-83c7-c898cfd731ab" xlink:to="loc_us-gaap_CommonStockMember_01a087ea-1a50-70bc-9580-d4fe6b47a92d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdditionalPaidInCapitalMember_01a087ea-1a50-7711-932f-c0b633eb1882" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AdditionalPaidInCapitalMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_01a087ea-1a50-7882-83c7-c898cfd731ab" xlink:to="loc_us-gaap_AdditionalPaidInCapitalMember_01a087ea-1a50-7711-932f-c0b633eb1882" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_01a087ea-1a50-7c93-aaf8-7eec03b3d8f4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_01a087ea-1a50-7882-83c7-c898cfd731ab" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_01a087ea-1a50-7c93-aaf8-7eec03b3d8f4" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetainedEarningsMember_01a087ea-1a50-7380-983d-3e845b5f6c95" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RetainedEarningsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_01a087ea-1a50-7882-83c7-c898cfd731ab" xlink:to="loc_us-gaap_RetainedEarningsMember_01a087ea-1a50-7380-983d-3e845b5f6c95" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TreasuryStockCommonMember_01a087ea-1a50-7b8b-8c93-1a043074dc18" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_TreasuryStockCommonMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_01a087ea-1a50-7882-83c7-c898cfd731ab" xlink:to="loc_us-gaap_TreasuryStockCommonMember_01a087ea-1a50-7b8b-8c93-1a043074dc18" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementClassOfStockAxis_01a087ea-1a50-7aa2-871b-556b3a0c1af7" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementClassOfStockAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_01a087ea-1a50-7944-8431-a11cd3ea0cfc" xlink:to="loc_us-gaap_StatementClassOfStockAxis_01a087ea-1a50-7aa2-871b-556b3a0c1af7" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfStockDomain_01a087ea-1a50-7aa2-871b-556b3a0c1af7_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ClassOfStockDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementClassOfStockAxis_01a087ea-1a50-7aa2-871b-556b3a0c1af7" xlink:to="loc_us-gaap_ClassOfStockDomain_01a087ea-1a50-7aa2-871b-556b3a0c1af7_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfStockDomain_01a087ea-1a50-7a85-af44-6349d5aecf14" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ClassOfStockDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementClassOfStockAxis_01a087ea-1a50-7aa2-871b-556b3a0c1af7" xlink:to="loc_us-gaap_ClassOfStockDomain_01a087ea-1a50-7a85-af44-6349d5aecf14" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SeriesAPreferredStockMember_01a087ea-1a50-7e69-aa4c-ae34ba757d86" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SeriesAPreferredStockMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockDomain_01a087ea-1a50-7a85-af44-6349d5aecf14" xlink:to="loc_us-gaap_SeriesAPreferredStockMember_01a087ea-1a50-7e69-aa4c-ae34ba757d86" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SeriesBPreferredStockMember_01a087ea-1a50-78eb-b4df-75b6e75d4a61" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SeriesBPreferredStockMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockDomain_01a087ea-1a50-7a85-af44-6349d5aecf14" xlink:to="loc_us-gaap_SeriesBPreferredStockMember_01a087ea-1a50-78eb-b4df-75b6e75d4a61" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_01a087ea-1a50-79ce-b3e7-44056c79a4e3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncreaseDecreaseInStockholdersEquityRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_01a087ea-1a50-7a4a-8d61-b7aebeca6199" xlink:to="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_01a087ea-1a50-79ce-b3e7-44056c79a4e3" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SharesOutstanding_01a087ea-1a50-7cd4-b9f2-fca1c6b171d9" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SharesOutstanding"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_01a087ea-1a50-79ce-b3e7-44056c79a4e3" xlink:to="loc_us-gaap_SharesOutstanding_01a087ea-1a50-7cd4-b9f2-fca1c6b171d9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquity_01a087ea-1a50-757f-bc29-e80c51af8f09" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockholdersEquity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_01a087ea-1a50-79ce-b3e7-44056c79a4e3" xlink:to="loc_us-gaap_StockholdersEquity_01a087ea-1a50-757f-bc29-e80c51af8f09" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_01a087ea-1a50-7e73-b2ee-726139f601d6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NetIncomeLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_01a087ea-1a50-79ce-b3e7-44056c79a4e3" xlink:to="loc_us-gaap_NetIncomeLoss_01a087ea-1a50-7e73-b2ee-726139f601d6" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent_01a087ea-1a50-7906-b69c-153b6b4a95ec" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_01a087ea-1a50-79ce-b3e7-44056c79a4e3" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent_01a087ea-1a50-7906-b69c-153b6b4a95ec" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue_01a087ea-1a50-7070-a11f-8cfe7ab3ddeb" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_01a087ea-1a50-79ce-b3e7-44056c79a4e3" xlink:to="loc_us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue_01a087ea-1a50-7070-a11f-8cfe7ab3ddeb" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodValueNewIssues_01a0d0c8-4126-7687-8894-6e1f207da0a8" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockIssuedDuringPeriodValueNewIssues"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_01a087ea-1a50-79ce-b3e7-44056c79a4e3" xlink:to="loc_us-gaap_StockIssuedDuringPeriodValueNewIssues_01a0d0c8-4126-7687-8894-6e1f207da0a8" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_boh_StockIssuedDuringPeriodSharesPurchaseAndEquityCompensationPlans_01a087ea-1a50-7e13-81d2-361d9b1a3e83" xlink:href="boh-20260930.xsd#boh_StockIssuedDuringPeriodSharesPurchaseAndEquityCompensationPlans"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_01a087ea-1a50-79ce-b3e7-44056c79a4e3" xlink:to="loc_boh_StockIssuedDuringPeriodSharesPurchaseAndEquityCompensationPlans_01a087ea-1a50-7e13-81d2-361d9b1a3e83" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_boh_StockIssuedDuringPeriodValuePurchaseAndEquityCompensationPlans_01a087ea-1a50-7093-b72f-70162046c48d" xlink:href="boh-20260930.xsd#boh_StockIssuedDuringPeriodValuePurchaseAndEquityCompensationPlans"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_01a087ea-1a50-79ce-b3e7-44056c79a4e3" xlink:to="loc_boh_StockIssuedDuringPeriodValuePurchaseAndEquityCompensationPlans_01a087ea-1a50-7093-b72f-70162046c48d" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TreasuryStockSharesAcquired_01a087ea-1a50-7af0-8333-940c17efaead" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_TreasuryStockSharesAcquired"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_01a087ea-1a50-79ce-b3e7-44056c79a4e3" xlink:to="loc_us-gaap_TreasuryStockSharesAcquired_01a087ea-1a50-7af0-8333-940c17efaead" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TreasuryStockValueAcquiredCostMethod_01a087ea-1a50-75b4-8d1e-3d839544c9ef" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_TreasuryStockValueAcquiredCostMethod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_01a087ea-1a50-79ce-b3e7-44056c79a4e3" xlink:to="loc_us-gaap_TreasuryStockValueAcquiredCostMethod_01a087ea-1a50-75b4-8d1e-3d839544c9ef" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_boh_StockIssuedRepurchasedDuringPeriodShares_01a087ea-1a50-79af-95ac-874cc51ac3d4" xlink:href="boh-20260930.xsd#boh_StockIssuedRepurchasedDuringPeriodShares"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_01a087ea-1a50-79ce-b3e7-44056c79a4e3" xlink:to="loc_boh_StockIssuedRepurchasedDuringPeriodShares_01a087ea-1a50-79af-95ac-874cc51ac3d4" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockRedeemedOrCalledDuringPeriodValue_01a087ea-1a50-7322-a8e9-6babcb2373f5" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockRedeemedOrCalledDuringPeriodValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_01a087ea-1a50-79ce-b3e7-44056c79a4e3" xlink:to="loc_us-gaap_StockRedeemedOrCalledDuringPeriodValue_01a087ea-1a50-7322-a8e9-6babcb2373f5" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DividendsCommonStockCash_01a087ea-1a50-75f5-873c-c77647ca3e50" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DividendsCommonStockCash"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_01a087ea-1a50-79ce-b3e7-44056c79a4e3" xlink:to="loc_us-gaap_DividendsCommonStockCash_01a087ea-1a50-75f5-873c-c77647ca3e50" xlink:type="arc" order="13"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DividendsPreferredStockCash_01a087ea-1a50-7ba7-bea2-89bd87697ac4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DividendsPreferredStockCash"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_01a087ea-1a50-79ce-b3e7-44056c79a4e3" xlink:to="loc_us-gaap_DividendsPreferredStockCash_01a087ea-1a50-7ba7-bea2-89bd87697ac4" xlink:type="arc" order="14"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SharesOutstanding_01a087ea-1a50-70ef-bc08-5f9c314189fd" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SharesOutstanding"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquity_01a087ea-1a50-708c-bd34-56724b9ae0f5" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockholdersEquity"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.boh.com/role/InvestmentSecuritiesScheduleofAmortizedCostGrossUnrealizedGainsandLossesandFairValueofInvestmentSecuritiesDetails" xlink:type="simple" xlink:href="boh-20260930.xsd#InvestmentSecuritiesScheduleofAmortizedCostGrossUnrealizedGainsandLossesandFairValueofInvestmentSecuritiesDetails"/>
  <link:definitionLink xlink:role="http://www.boh.com/role/InvestmentSecuritiesScheduleofAmortizedCostGrossUnrealizedGainsandLossesandFairValueofInvestmentSecuritiesDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_01a087ea-1b01-726b-a913-c7747ad52091" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSaleTable_01a087ea-1b01-77f6-a589-c2ea16f04049" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtSecuritiesAvailableForSaleTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_01a087ea-1b01-726b-a913-c7747ad52091" xlink:to="loc_us-gaap_DebtSecuritiesAvailableForSaleTable_01a087ea-1b01-77f6-a589-c2ea16f04049" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancialInstrumentAxis_01a087ea-1b01-7329-9d73-cc0963f47884" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancialInstrumentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtSecuritiesAvailableForSaleTable_01a087ea-1b01-77f6-a589-c2ea16f04049" xlink:to="loc_us-gaap_FinancialInstrumentAxis_01a087ea-1b01-7329-9d73-cc0963f47884" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_01a087ea-1b01-7329-9d73-cc0963f47884_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FinancialInstrumentAxis_01a087ea-1b01-7329-9d73-cc0963f47884" xlink:to="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_01a087ea-1b01-7329-9d73-cc0963f47884_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_01a087ea-1b01-7737-9ef5-92ea11c98a9a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FinancialInstrumentAxis_01a087ea-1b01-7329-9d73-cc0963f47884" xlink:to="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_01a087ea-1b01-7737-9ef5-92ea11c98a9a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_USTreasuryAndGovernmentMember_01a087ea-1b01-7bfc-9a5e-63dfc4af3952" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_USTreasuryAndGovernmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_01a087ea-1b01-7737-9ef5-92ea11c98a9a" xlink:to="loc_us-gaap_USTreasuryAndGovernmentMember_01a087ea-1b01-7bfc-9a5e-63dfc4af3952" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_USStatesAndPoliticalSubdivisionsMember_01a087ea-1b01-71cb-bae3-45b052dcee36" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_USStatesAndPoliticalSubdivisionsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_01a087ea-1b01-7737-9ef5-92ea11c98a9a" xlink:to="loc_us-gaap_USStatesAndPoliticalSubdivisionsMember_01a087ea-1b01-71cb-bae3-45b052dcee36" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_USGovernmentSponsoredEnterprisesDebtSecuritiesMember_01a087ea-1b01-7873-a2ed-77995cdb3ac2" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_USGovernmentSponsoredEnterprisesDebtSecuritiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_01a087ea-1b01-7737-9ef5-92ea11c98a9a" xlink:to="loc_us-gaap_USGovernmentSponsoredEnterprisesDebtSecuritiesMember_01a087ea-1b01-7873-a2ed-77995cdb3ac2" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CorporateDebtSecuritiesMember_01a087ea-1b01-7f14-b6fe-6befb1a619db" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CorporateDebtSecuritiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_01a087ea-1b01-7737-9ef5-92ea11c98a9a" xlink:to="loc_us-gaap_CorporateDebtSecuritiesMember_01a087ea-1b01-7f14-b6fe-6befb1a619db" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CollateralizedMortgageObligationsMember_01a087ea-1b01-7d6a-afff-e3b317539e13" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CollateralizedMortgageObligationsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_01a087ea-1b01-7737-9ef5-92ea11c98a9a" xlink:to="loc_us-gaap_CollateralizedMortgageObligationsMember_01a087ea-1b01-7d6a-afff-e3b317539e13" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_boh_ResidentialGovernmentAgenciesOrSponsoredEnterprisesMember_01a087ea-1b01-7eb0-92af-cf8fc23a673c" xlink:href="boh-20260930.xsd#boh_ResidentialGovernmentAgenciesOrSponsoredEnterprisesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CollateralizedMortgageObligationsMember_01a087ea-1b01-7d6a-afff-e3b317539e13" xlink:to="loc_boh_ResidentialGovernmentAgenciesOrSponsoredEnterprisesMember_01a087ea-1b01-7eb0-92af-cf8fc23a673c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_boh_CommercialGovernmentAgenciesOrSponsoredEnterprisesMember_01a087ea-1b01-716e-9047-2e1c434d54a1" xlink:href="boh-20260930.xsd#boh_CommercialGovernmentAgenciesOrSponsoredEnterprisesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CollateralizedMortgageObligationsMember_01a087ea-1b01-7d6a-afff-e3b317539e13" xlink:to="loc_boh_CommercialGovernmentAgenciesOrSponsoredEnterprisesMember_01a087ea-1b01-716e-9047-2e1c434d54a1" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_boh_CommercialNonAgencyMember_01a087ea-1b01-7b7a-9bb1-ccf6318cae6d" xlink:href="boh-20260930.xsd#boh_CommercialNonAgencyMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CollateralizedMortgageObligationsMember_01a087ea-1b01-7d6a-afff-e3b317539e13" xlink:to="loc_boh_CommercialNonAgencyMember_01a087ea-1b01-7b7a-9bb1-ccf6318cae6d" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MortgageBackedSecuritiesMember_01a087ea-1b01-7553-bc17-791ff73c6ecc" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_MortgageBackedSecuritiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_01a087ea-1b01-7737-9ef5-92ea11c98a9a" xlink:to="loc_us-gaap_MortgageBackedSecuritiesMember_01a087ea-1b01-7553-bc17-791ff73c6ecc" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_boh_ResidentialMortgageBackedSecuritiesGovernmentAgenciesOrSponsoredEnterprisesMember_01a087ea-1b01-7008-949f-96f3199620c0" xlink:href="boh-20260930.xsd#boh_ResidentialMortgageBackedSecuritiesGovernmentAgenciesOrSponsoredEnterprisesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MortgageBackedSecuritiesMember_01a087ea-1b01-7553-bc17-791ff73c6ecc" xlink:to="loc_boh_ResidentialMortgageBackedSecuritiesGovernmentAgenciesOrSponsoredEnterprisesMember_01a087ea-1b01-7008-949f-96f3199620c0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_boh_CommercialMortgageBackedSecuritiesIssuedByUSGovernmentSponsoredEnterprisesMember_01a087ea-1b01-7d61-902f-129f92976605" xlink:href="boh-20260930.xsd#boh_CommercialMortgageBackedSecuritiesIssuedByUSGovernmentSponsoredEnterprisesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MortgageBackedSecuritiesMember_01a087ea-1b01-7553-bc17-791ff73c6ecc" xlink:to="loc_boh_CommercialMortgageBackedSecuritiesIssuedByUSGovernmentSponsoredEnterprisesMember_01a087ea-1b01-7d61-902f-129f92976605" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesFairValueToAmortizedCostBasisAbstract_01a087ea-1b01-703f-83ff-360df215c226" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AvailableForSaleSecuritiesFairValueToAmortizedCostBasisAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_01a087ea-1b01-726b-a913-c7747ad52091" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesFairValueToAmortizedCostBasisAbstract_01a087ea-1b01-703f-83ff-360df215c226" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSaleAmortizedCostExcludingAccruedInterestBeforeAllowanceForCreditLoss_01a087ea-1b01-72ef-a16f-91afdfbe5076" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtSecuritiesAvailableForSaleAmortizedCostExcludingAccruedInterestBeforeAllowanceForCreditLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AvailableForSaleSecuritiesFairValueToAmortizedCostBasisAbstract_01a087ea-1b01-703f-83ff-360df215c226" xlink:to="loc_us-gaap_DebtSecuritiesAvailableForSaleAmortizedCostExcludingAccruedInterestBeforeAllowanceForCreditLoss_01a087ea-1b01-72ef-a16f-91afdfbe5076" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax_01a087ea-1b01-7c2a-82ff-3ac4fcdfeb58" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AvailableForSaleSecuritiesFairValueToAmortizedCostBasisAbstract_01a087ea-1b01-703f-83ff-360df215c226" xlink:to="loc_us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax_01a087ea-1b01-7c2a-82ff-3ac4fcdfeb58" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax_01a087ea-1b01-7dad-b5c8-6f9e7246f068" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AvailableForSaleSecuritiesFairValueToAmortizedCostBasisAbstract_01a087ea-1b01-703f-83ff-360df215c226" xlink:to="loc_us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax_01a087ea-1b01-7dad-b5c8-6f9e7246f068" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSaleExcludingAccruedInterest_01a087ea-1b01-7283-9f26-a7e461c7e4c5" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtSecuritiesAvailableForSaleExcludingAccruedInterest"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AvailableForSaleSecuritiesFairValueToAmortizedCostBasisAbstract_01a087ea-1b01-703f-83ff-360df215c226" xlink:to="loc_us-gaap_DebtSecuritiesAvailableForSaleExcludingAccruedInterest_01a087ea-1b01-7283-9f26-a7e461c7e4c5" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HeldToMaturitySecuritiesAbstract_01a087ea-1b01-748c-9ec9-49cbce4beceb" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_HeldToMaturitySecuritiesAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_01a087ea-1b01-726b-a913-c7747ad52091" xlink:to="loc_us-gaap_HeldToMaturitySecuritiesAbstract_01a087ea-1b01-748c-9ec9-49cbce4beceb" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesHeldToMaturityExcludingAccruedInterestBeforeAllowanceForCreditLoss_01a087ea-1b01-75a3-9ab5-21615cd7e1e9" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtSecuritiesHeldToMaturityExcludingAccruedInterestBeforeAllowanceForCreditLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_HeldToMaturitySecuritiesAbstract_01a087ea-1b01-748c-9ec9-49cbce4beceb" xlink:to="loc_us-gaap_DebtSecuritiesHeldToMaturityExcludingAccruedInterestBeforeAllowanceForCreditLoss_01a087ea-1b01-75a3-9ab5-21615cd7e1e9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingGain_01a087ea-1b01-76f2-896d-90807f91a5c4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingGain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_HeldToMaturitySecuritiesAbstract_01a087ea-1b01-748c-9ec9-49cbce4beceb" xlink:to="loc_us-gaap_HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingGain_01a087ea-1b01-76f2-896d-90807f91a5c4" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingLoss_01a087ea-1b01-7df4-ac9e-1629f999a0e7" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_HeldToMaturitySecuritiesAbstract_01a087ea-1b01-748c-9ec9-49cbce4beceb" xlink:to="loc_us-gaap_HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingLoss_01a087ea-1b01-7df4-ac9e-1629f999a0e7" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HeldToMaturitySecuritiesFairValue_01a087ea-1b01-712f-9837-b9b283f1eadd" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_HeldToMaturitySecuritiesFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_HeldToMaturitySecuritiesAbstract_01a087ea-1b01-748c-9ec9-49cbce4beceb" xlink:to="loc_us-gaap_HeldToMaturitySecuritiesFairValue_01a087ea-1b01-712f-9837-b9b283f1eadd" xlink:type="arc" order="4"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.boh.com/role/InvestmentSecuritiesAdditionalInformationDetails" xlink:type="simple" xlink:href="boh-20260930.xsd#InvestmentSecuritiesAdditionalInformationDetails"/>
  <link:definitionLink xlink:role="http://www.boh.com/role/InvestmentSecuritiesAdditionalInformationDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_01a087ea-1b01-718a-a556-17c552adcd0c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSaleTable_01a087ea-1b01-74ce-b7be-5717a93e2046" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtSecuritiesAvailableForSaleTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_01a087ea-1b01-718a-a556-17c552adcd0c" xlink:to="loc_us-gaap_DebtSecuritiesAvailableForSaleTable_01a087ea-1b01-74ce-b7be-5717a93e2046" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_01a087ea-1b01-7dc0-aadb-a9ec1c9c35c8" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_RangeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtSecuritiesAvailableForSaleTable_01a087ea-1b01-74ce-b7be-5717a93e2046" xlink:to="loc_srt_RangeAxis_01a087ea-1b01-7dc0-aadb-a9ec1c9c35c8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_01a087ea-1b01-7dc0-aadb-a9ec1c9c35c8_default" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_01a087ea-1b01-7dc0-aadb-a9ec1c9c35c8" xlink:to="loc_srt_RangeMember_01a087ea-1b01-7dc0-aadb-a9ec1c9c35c8_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_01a087ea-1b01-777a-afaa-8aba7e2f57f3" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_01a087ea-1b01-7dc0-aadb-a9ec1c9c35c8" xlink:to="loc_srt_RangeMember_01a087ea-1b01-777a-afaa-8aba7e2f57f3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember_01a087ea-1b01-77fc-88b5-ac82c15d7fd0" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_MinimumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_01a087ea-1b01-777a-afaa-8aba7e2f57f3" xlink:to="loc_srt_MinimumMember_01a087ea-1b01-77fc-88b5-ac82c15d7fd0" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_01a087ea-1b01-7ba4-9974-76aab8cf35c7" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_MaximumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_01a087ea-1b01-777a-afaa-8aba7e2f57f3" xlink:to="loc_srt_MaximumMember_01a087ea-1b01-7ba4-9974-76aab8cf35c7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSaleAccruedInterestAfterAllowanceForCreditLoss_01a087ea-1b01-7d99-89cb-1c1694036c79" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtSecuritiesAvailableForSaleAccruedInterestAfterAllowanceForCreditLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_01a087ea-1b01-718a-a556-17c552adcd0c" xlink:to="loc_us-gaap_DebtSecuritiesAvailableForSaleAccruedInterestAfterAllowanceForCreditLoss_01a087ea-1b01-7d99-89cb-1c1694036c79" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesHeldToMaturityAccruedInterestBeforeAllowanceForCreditLoss_01a087ea-1b01-7892-a8d5-bbe0a5788573" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtSecuritiesHeldToMaturityAccruedInterestBeforeAllowanceForCreditLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_01a087ea-1b01-718a-a556-17c552adcd0c" xlink:to="loc_us-gaap_DebtSecuritiesHeldToMaturityAccruedInterestBeforeAllowanceForCreditLoss_01a087ea-1b01-7892-a8d5-bbe0a5788573" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_boh_CarryingValueOfInvestmentSecuritiesPledged_01a087ea-1b01-744f-b020-2eb2dfddc467" xlink:href="boh-20260930.xsd#boh_CarryingValueOfInvestmentSecuritiesPledged"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_01a087ea-1b01-718a-a556-17c552adcd0c" xlink:to="loc_boh_CarryingValueOfInvestmentSecuritiesPledged_01a087ea-1b01-744f-b020-2eb2dfddc467" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GainLossOnSaleOfInvestments_01a087ea-1b01-731e-9386-5de7f5385974" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_GainLossOnSaleOfInvestments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_01a087ea-1b01-718a-a556-17c552adcd0c" xlink:to="loc_us-gaap_GainLossOnSaleOfInvestments_01a087ea-1b01-731e-9386-5de7f5385974" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_boh_DebtSecuritiesAvailableForSaleCreditLossImpairmentUnrealizedLossPositionNumberOfPositions_01a087ea-1b01-7bab-bab5-34ab13d679df" xlink:href="boh-20260930.xsd#boh_DebtSecuritiesAvailableForSaleCreditLossImpairmentUnrealizedLossPositionNumberOfPositions"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_01a087ea-1b01-718a-a556-17c552adcd0c" xlink:to="loc_boh_DebtSecuritiesAvailableForSaleCreditLossImpairmentUnrealizedLossPositionNumberOfPositions_01a087ea-1b01-7bab-bab5-34ab13d679df" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_boh_DebtSecuritiesAvailableForSaleNumberOfPositions_01a087ea-1b01-7f62-95f4-54abcb71f981" xlink:href="boh-20260930.xsd#boh_DebtSecuritiesAvailableForSaleNumberOfPositions"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_01a087ea-1b01-718a-a556-17c552adcd0c" xlink:to="loc_boh_DebtSecuritiesAvailableForSaleNumberOfPositions_01a087ea-1b01-7f62-95f4-54abcb71f981" xlink:type="arc" order="5"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.boh.com/role/InvestmentSecuritiesAnalysisoftheContractualMaturitiesofInvestmentSecuritiesDetails" xlink:type="simple" xlink:href="boh-20260930.xsd#InvestmentSecuritiesAnalysisoftheContractualMaturitiesofInvestmentSecuritiesDetails"/>
  <link:definitionLink xlink:role="http://www.boh.com/role/InvestmentSecuritiesAnalysisoftheContractualMaturitiesofInvestmentSecuritiesDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfTradingSecuritiesAndOtherTradingAssetsLineItems_01a087ea-1b01-7102-a84c-9966d41b90ce" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfTradingSecuritiesAndOtherTradingAssetsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfTradingSecuritiesAndOtherTradingAssetsTable_01a087ea-1b01-78e1-9e1e-ae132a7cd6da" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfTradingSecuritiesAndOtherTradingAssetsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ScheduleOfTradingSecuritiesAndOtherTradingAssetsLineItems_01a087ea-1b01-7102-a84c-9966d41b90ce" xlink:to="loc_us-gaap_ScheduleOfTradingSecuritiesAndOtherTradingAssetsTable_01a087ea-1b01-78e1-9e1e-ae132a7cd6da" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancialInstrumentAxis_01a087ea-1b01-7390-ad5d-09fcb0a7ba1b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancialInstrumentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfTradingSecuritiesAndOtherTradingAssetsTable_01a087ea-1b01-78e1-9e1e-ae132a7cd6da" xlink:to="loc_us-gaap_FinancialInstrumentAxis_01a087ea-1b01-7390-ad5d-09fcb0a7ba1b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_01a087ea-1b01-7390-ad5d-09fcb0a7ba1b_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FinancialInstrumentAxis_01a087ea-1b01-7390-ad5d-09fcb0a7ba1b" xlink:to="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_01a087ea-1b01-7390-ad5d-09fcb0a7ba1b_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_01a087ea-1b01-722e-9754-f2054b1cb98d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FinancialInstrumentAxis_01a087ea-1b01-7390-ad5d-09fcb0a7ba1b" xlink:to="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_01a087ea-1b01-722e-9754-f2054b1cb98d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_USGovernmentAgenciesDebtSecuritiesMember_01a087ea-1b01-71ca-97b9-bb6fdf8acd2a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_USGovernmentAgenciesDebtSecuritiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_01a087ea-1b01-722e-9754-f2054b1cb98d" xlink:to="loc_us-gaap_USGovernmentAgenciesDebtSecuritiesMember_01a087ea-1b01-71ca-97b9-bb6fdf8acd2a" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CollateralizedMortgageObligationsMember_01a087ea-1b01-7c15-9da7-851bca6bd265" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CollateralizedMortgageObligationsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_01a087ea-1b01-722e-9754-f2054b1cb98d" xlink:to="loc_us-gaap_CollateralizedMortgageObligationsMember_01a087ea-1b01-7c15-9da7-851bca6bd265" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_boh_ResidentialGovernmentAgenciesOrSponsoredEnterprisesMember_01a087ea-1b01-71b7-a998-db4510d1c804" xlink:href="boh-20260930.xsd#boh_ResidentialGovernmentAgenciesOrSponsoredEnterprisesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CollateralizedMortgageObligationsMember_01a087ea-1b01-7c15-9da7-851bca6bd265" xlink:to="loc_boh_ResidentialGovernmentAgenciesOrSponsoredEnterprisesMember_01a087ea-1b01-71b7-a998-db4510d1c804" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_boh_CommercialGovernmentAgenciesOrSponsoredEnterprisesMember_01a087ea-1b01-74c7-a103-01a019d4a7b4" xlink:href="boh-20260930.xsd#boh_CommercialGovernmentAgenciesOrSponsoredEnterprisesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CollateralizedMortgageObligationsMember_01a087ea-1b01-7c15-9da7-851bca6bd265" xlink:to="loc_boh_CommercialGovernmentAgenciesOrSponsoredEnterprisesMember_01a087ea-1b01-74c7-a103-01a019d4a7b4" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_boh_CommercialNonAgencyMember_01a087ea-1b01-73ae-9b91-01390b9f1e7c" xlink:href="boh-20260930.xsd#boh_CommercialNonAgencyMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CollateralizedMortgageObligationsMember_01a087ea-1b01-7c15-9da7-851bca6bd265" xlink:to="loc_boh_CommercialNonAgencyMember_01a087ea-1b01-73ae-9b91-01390b9f1e7c" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MortgageBackedSecuritiesMember_01a087ea-1b01-7620-b69a-656abd371fa0" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_MortgageBackedSecuritiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_01a087ea-1b01-722e-9754-f2054b1cb98d" xlink:to="loc_us-gaap_MortgageBackedSecuritiesMember_01a087ea-1b01-7620-b69a-656abd371fa0" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_boh_ResidentialMortgageBackedSecuritiesGovernmentAgenciesOrSponsoredEnterprisesMember_01a087ea-1b01-77ab-b389-479d30f62235" xlink:href="boh-20260930.xsd#boh_ResidentialMortgageBackedSecuritiesGovernmentAgenciesOrSponsoredEnterprisesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MortgageBackedSecuritiesMember_01a087ea-1b01-7620-b69a-656abd371fa0" xlink:to="loc_boh_ResidentialMortgageBackedSecuritiesGovernmentAgenciesOrSponsoredEnterprisesMember_01a087ea-1b01-77ab-b389-479d30f62235" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_boh_CommercialMortgageBackedSecuritiesIssuedByUSGovernmentSponsoredEnterprisesMember_01a087ea-1b01-708a-acbc-88dfbcd307ff" xlink:href="boh-20260930.xsd#boh_CommercialMortgageBackedSecuritiesIssuedByUSGovernmentSponsoredEnterprisesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MortgageBackedSecuritiesMember_01a087ea-1b01-7620-b69a-656abd371fa0" xlink:to="loc_boh_CommercialMortgageBackedSecuritiesIssuedByUSGovernmentSponsoredEnterprisesMember_01a087ea-1b01-708a-acbc-88dfbcd307ff" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDateAmortizedCostBasisRollingMaturityAbstract_01a087ea-1b01-798c-b390-8c4e47ff4a95" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDateAmortizedCostBasisRollingMaturityAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfTradingSecuritiesAndOtherTradingAssetsLineItems_01a087ea-1b01-7102-a84c-9966d41b90ce" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDateAmortizedCostBasisRollingMaturityAbstract_01a087ea-1b01-798c-b390-8c4e47ff4a95" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesNextRollingTwelveMonthsAmortizedCostBasis_01a087ea-1b01-76e2-93ef-0a3a2223d98e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AvailableForSaleSecuritiesDebtMaturitiesNextRollingTwelveMonthsAmortizedCostBasis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDateAmortizedCostBasisRollingMaturityAbstract_01a087ea-1b01-798c-b390-8c4e47ff4a95" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesNextRollingTwelveMonthsAmortizedCostBasis_01a087ea-1b01-76e2-93ef-0a3a2223d98e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesRollingYearTwoThroughFiveAmortizedCostBasis_01a087ea-1b01-7711-afe4-b033db3ef7d7" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AvailableForSaleSecuritiesDebtMaturitiesRollingYearTwoThroughFiveAmortizedCostBasis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDateAmortizedCostBasisRollingMaturityAbstract_01a087ea-1b01-798c-b390-8c4e47ff4a95" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesRollingYearTwoThroughFiveAmortizedCostBasis_01a087ea-1b01-7711-afe4-b033db3ef7d7" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesRollingYearSixThroughTenAmortizedCostBasis_01a087ea-1b01-7014-883a-13e8995a24d2" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AvailableForSaleSecuritiesDebtMaturitiesRollingYearSixThroughTenAmortizedCostBasis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDateAmortizedCostBasisRollingMaturityAbstract_01a087ea-1b01-798c-b390-8c4e47ff4a95" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesRollingYearSixThroughTenAmortizedCostBasis_01a087ea-1b01-7014-883a-13e8995a24d2" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDateAmortizedCostBasis_01a087ea-1b01-737a-8f50-0b7d243a11ab" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDateAmortizedCostBasis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDateAmortizedCostBasisRollingMaturityAbstract_01a087ea-1b01-798c-b390-8c4e47ff4a95" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDateAmortizedCostBasis_01a087ea-1b01-737a-8f50-0b7d243a11ab" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateAmortizedCost_01a087ea-1b01-725e-9e07-0fd7893ce422" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateAmortizedCost"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDateAmortizedCostBasisRollingMaturityAbstract_01a087ea-1b01-798c-b390-8c4e47ff4a95" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateAmortizedCost_01a087ea-1b01-725e-9e07-0fd7893ce422" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSaleAmortizedCostExcludingAccruedInterestBeforeAllowanceForCreditLoss_01a087ea-1b01-7f6e-a1d6-f91ab68f5eea" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtSecuritiesAvailableForSaleAmortizedCostExcludingAccruedInterestBeforeAllowanceForCreditLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDateAmortizedCostBasisRollingMaturityAbstract_01a087ea-1b01-798c-b390-8c4e47ff4a95" xlink:to="loc_us-gaap_DebtSecuritiesAvailableForSaleAmortizedCostExcludingAccruedInterestBeforeAllowanceForCreditLoss_01a087ea-1b01-7f6e-a1d6-f91ab68f5eea" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDateRollingMaturityAbstract_01a087ea-1b01-7ee4-b4ed-85a0e7b71e02" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDateRollingMaturityAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfTradingSecuritiesAndOtherTradingAssetsLineItems_01a087ea-1b01-7102-a84c-9966d41b90ce" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDateRollingMaturityAbstract_01a087ea-1b01-7ee4-b4ed-85a0e7b71e02" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesNextRollingTwelveMonthsFairValue_01a087ea-1b01-7009-b69f-b7a5d04027d1" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AvailableForSaleSecuritiesDebtMaturitiesNextRollingTwelveMonthsFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDateRollingMaturityAbstract_01a087ea-1b01-7ee4-b4ed-85a0e7b71e02" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesNextRollingTwelveMonthsFairValue_01a087ea-1b01-7009-b69f-b7a5d04027d1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesRollingYearTwoThroughFiveFairValue_01a087ea-1b01-7afa-87b7-b7699c6dc0d1" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AvailableForSaleSecuritiesDebtMaturitiesRollingYearTwoThroughFiveFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDateRollingMaturityAbstract_01a087ea-1b01-7ee4-b4ed-85a0e7b71e02" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesRollingYearTwoThroughFiveFairValue_01a087ea-1b01-7afa-87b7-b7699c6dc0d1" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesRollingYearSixThroughTenFairValue_01a087ea-1b01-7465-b353-3a1d24a6511e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AvailableForSaleSecuritiesDebtMaturitiesRollingYearSixThroughTenFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDateRollingMaturityAbstract_01a087ea-1b01-7ee4-b4ed-85a0e7b71e02" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesRollingYearSixThroughTenFairValue_01a087ea-1b01-7465-b353-3a1d24a6511e" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDate_01a087ea-1b01-7cac-a655-89cd10f250e0" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDateRollingMaturityAbstract_01a087ea-1b01-7ee4-b4ed-85a0e7b71e02" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDate_01a087ea-1b01-7cac-a655-89cd10f250e0" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateFairValue_01a087ea-1b01-7930-b46a-a56928677802" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDateRollingMaturityAbstract_01a087ea-1b01-7ee4-b4ed-85a0e7b71e02" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateFairValue_01a087ea-1b01-7930-b46a-a56928677802" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSaleExcludingAccruedInterest_01a087ea-1b01-72e6-9bdd-05c6d309507d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtSecuritiesAvailableForSaleExcludingAccruedInterest"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDateRollingMaturityAbstract_01a087ea-1b01-7ee4-b4ed-85a0e7b71e02" xlink:to="loc_us-gaap_DebtSecuritiesAvailableForSaleExcludingAccruedInterest_01a087ea-1b01-72e6-9bdd-05c6d309507d" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HeldtomaturitySecuritiesDebtMaturitiesSingleMaturityDateAmortizedCostRollingMaturityAbstract_01a087ea-1b01-71e5-a870-534b1549845e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_HeldtomaturitySecuritiesDebtMaturitiesSingleMaturityDateAmortizedCostRollingMaturityAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfTradingSecuritiesAndOtherTradingAssetsLineItems_01a087ea-1b01-7102-a84c-9966d41b90ce" xlink:to="loc_us-gaap_HeldtomaturitySecuritiesDebtMaturitiesSingleMaturityDateAmortizedCostRollingMaturityAbstract_01a087ea-1b01-71e5-a870-534b1549845e" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HeldtomaturitySecuritiesDebtMaturitiesNextRollingTwelveMonthsAmortizedCost_01a087ea-1b01-7556-8116-b914b4cfd3eb" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_HeldtomaturitySecuritiesDebtMaturitiesNextRollingTwelveMonthsAmortizedCost"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_HeldtomaturitySecuritiesDebtMaturitiesSingleMaturityDateAmortizedCostRollingMaturityAbstract_01a087ea-1b01-71e5-a870-534b1549845e" xlink:to="loc_us-gaap_HeldtomaturitySecuritiesDebtMaturitiesNextRollingTwelveMonthsAmortizedCost_01a087ea-1b01-7556-8116-b914b4cfd3eb" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HeldtomaturitySecuritiesDebtMaturitiesRollingYearTwoThroughFiveAmortizedCost_01a087ea-1b01-7274-9c0c-b9110091e343" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_HeldtomaturitySecuritiesDebtMaturitiesRollingYearTwoThroughFiveAmortizedCost"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_HeldtomaturitySecuritiesDebtMaturitiesSingleMaturityDateAmortizedCostRollingMaturityAbstract_01a087ea-1b01-71e5-a870-534b1549845e" xlink:to="loc_us-gaap_HeldtomaturitySecuritiesDebtMaturitiesRollingYearTwoThroughFiveAmortizedCost_01a087ea-1b01-7274-9c0c-b9110091e343" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HeldtomaturitySecuritiesDebtMaturitiesRollingYearSixThroughTenAmortizedCost_01a087ea-1b01-73fb-852b-c8ef78e1e4d3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_HeldtomaturitySecuritiesDebtMaturitiesRollingYearSixThroughTenAmortizedCost"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_HeldtomaturitySecuritiesDebtMaturitiesSingleMaturityDateAmortizedCostRollingMaturityAbstract_01a087ea-1b01-71e5-a870-534b1549845e" xlink:to="loc_us-gaap_HeldtomaturitySecuritiesDebtMaturitiesRollingYearSixThroughTenAmortizedCost_01a087ea-1b01-73fb-852b-c8ef78e1e4d3" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HeldToMaturitySecuritiesDebtMaturitiesSingleMaturityDateAmortizedCostBasis_01a087ea-1b01-7523-8c95-b64cc5e72114" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_HeldToMaturitySecuritiesDebtMaturitiesSingleMaturityDateAmortizedCostBasis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_HeldtomaturitySecuritiesDebtMaturitiesSingleMaturityDateAmortizedCostRollingMaturityAbstract_01a087ea-1b01-71e5-a870-534b1549845e" xlink:to="loc_us-gaap_HeldToMaturitySecuritiesDebtMaturitiesSingleMaturityDateAmortizedCostBasis_01a087ea-1b01-7523-8c95-b64cc5e72114" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HeldToMaturitySecuritiesDebtMaturitiesWithoutSingleMaturityDateNetCarryingAmount_01a087ea-1b01-7f8d-afc2-3601db05b23e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_HeldToMaturitySecuritiesDebtMaturitiesWithoutSingleMaturityDateNetCarryingAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_HeldtomaturitySecuritiesDebtMaturitiesSingleMaturityDateAmortizedCostRollingMaturityAbstract_01a087ea-1b01-71e5-a870-534b1549845e" xlink:to="loc_us-gaap_HeldToMaturitySecuritiesDebtMaturitiesWithoutSingleMaturityDateNetCarryingAmount_01a087ea-1b01-7f8d-afc2-3601db05b23e" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesHeldToMaturityExcludingAccruedInterestBeforeAllowanceForCreditLoss_01a087ea-1b01-7b4b-adec-b28b1995e5df" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtSecuritiesHeldToMaturityExcludingAccruedInterestBeforeAllowanceForCreditLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_HeldtomaturitySecuritiesDebtMaturitiesSingleMaturityDateAmortizedCostRollingMaturityAbstract_01a087ea-1b01-71e5-a870-534b1549845e" xlink:to="loc_us-gaap_DebtSecuritiesHeldToMaturityExcludingAccruedInterestBeforeAllowanceForCreditLoss_01a087ea-1b01-7b4b-adec-b28b1995e5df" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HeldToMaturitySecuritiesDebtMaturitiesSingleMaturityDateFairValueRollingMaturityAbstract_01a087ea-1b01-734b-9ef6-6c9c6341beb8" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_HeldToMaturitySecuritiesDebtMaturitiesSingleMaturityDateFairValueRollingMaturityAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfTradingSecuritiesAndOtherTradingAssetsLineItems_01a087ea-1b01-7102-a84c-9966d41b90ce" xlink:to="loc_us-gaap_HeldToMaturitySecuritiesDebtMaturitiesSingleMaturityDateFairValueRollingMaturityAbstract_01a087ea-1b01-734b-9ef6-6c9c6341beb8" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HeldToMaturitySecuritiesDebtMaturitiesNextRollingTwelveMonthsFairValue_01a087ea-1b01-79ad-af05-c948f8c53736" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_HeldToMaturitySecuritiesDebtMaturitiesNextRollingTwelveMonthsFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_HeldToMaturitySecuritiesDebtMaturitiesSingleMaturityDateFairValueRollingMaturityAbstract_01a087ea-1b01-734b-9ef6-6c9c6341beb8" xlink:to="loc_us-gaap_HeldToMaturitySecuritiesDebtMaturitiesNextRollingTwelveMonthsFairValue_01a087ea-1b01-79ad-af05-c948f8c53736" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HeldToMaturitySecuritiesDebtMaturitiesRollingYearTwoThroughFiveFairValue_01a087ea-1b01-7806-b457-0ce178432303" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_HeldToMaturitySecuritiesDebtMaturitiesRollingYearTwoThroughFiveFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_HeldToMaturitySecuritiesDebtMaturitiesSingleMaturityDateFairValueRollingMaturityAbstract_01a087ea-1b01-734b-9ef6-6c9c6341beb8" xlink:to="loc_us-gaap_HeldToMaturitySecuritiesDebtMaturitiesRollingYearTwoThroughFiveFairValue_01a087ea-1b01-7806-b457-0ce178432303" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HeldToMaturitySecuritiesDebtMaturitiesRollingYearSixThroughTenFairValue_01a087ea-1b01-700b-9323-69b579409d32" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_HeldToMaturitySecuritiesDebtMaturitiesRollingYearSixThroughTenFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_HeldToMaturitySecuritiesDebtMaturitiesSingleMaturityDateFairValueRollingMaturityAbstract_01a087ea-1b01-734b-9ef6-6c9c6341beb8" xlink:to="loc_us-gaap_HeldToMaturitySecuritiesDebtMaturitiesRollingYearSixThroughTenFairValue_01a087ea-1b01-700b-9323-69b579409d32" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HeldToMaturitySecuritiesDebtMaturitiesSingleMaturityDateFairValue_01a087ea-1b01-7bcd-a0d6-1d3798346838" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_HeldToMaturitySecuritiesDebtMaturitiesSingleMaturityDateFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_HeldToMaturitySecuritiesDebtMaturitiesSingleMaturityDateFairValueRollingMaturityAbstract_01a087ea-1b01-734b-9ef6-6c9c6341beb8" xlink:to="loc_us-gaap_HeldToMaturitySecuritiesDebtMaturitiesSingleMaturityDateFairValue_01a087ea-1b01-7bcd-a0d6-1d3798346838" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HeldToMaturitySecuritiesDebtMaturitiesWithoutSingleMaturityDateFairValue_01a087ea-1b01-75d4-8c17-ad0a9d9736a2" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_HeldToMaturitySecuritiesDebtMaturitiesWithoutSingleMaturityDateFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_HeldToMaturitySecuritiesDebtMaturitiesSingleMaturityDateFairValueRollingMaturityAbstract_01a087ea-1b01-734b-9ef6-6c9c6341beb8" xlink:to="loc_us-gaap_HeldToMaturitySecuritiesDebtMaturitiesWithoutSingleMaturityDateFairValue_01a087ea-1b01-75d4-8c17-ad0a9d9736a2" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HeldToMaturitySecuritiesFairValue_01a087ea-1b01-732b-8c8f-8c0c210943d2" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_HeldToMaturitySecuritiesFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_HeldToMaturitySecuritiesDebtMaturitiesSingleMaturityDateFairValueRollingMaturityAbstract_01a087ea-1b01-734b-9ef6-6c9c6341beb8" xlink:to="loc_us-gaap_HeldToMaturitySecuritiesFairValue_01a087ea-1b01-732b-8c8f-8c0c210943d2" xlink:type="arc" order="6"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.boh.com/role/InvestmentSecuritiesScheduleofAFSDebtSecuritiesinanUnrealizedLossPositionDetails" xlink:type="simple" xlink:href="boh-20260930.xsd#InvestmentSecuritiesScheduleofAFSDebtSecuritiesinanUnrealizedLossPositionDetails"/>
  <link:definitionLink xlink:role="http://www.boh.com/role/InvestmentSecuritiesScheduleofAFSDebtSecuritiesinanUnrealizedLossPositionDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_01a087ea-1b01-7aa8-9db8-ce1fb94164f0" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSaleTable_01a087ea-1b01-71cc-b646-4ae75342b90f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtSecuritiesAvailableForSaleTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_01a087ea-1b01-7aa8-9db8-ce1fb94164f0" xlink:to="loc_us-gaap_DebtSecuritiesAvailableForSaleTable_01a087ea-1b01-71cc-b646-4ae75342b90f" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancialInstrumentAxis_01a087ea-1b01-782d-9b75-b5020efca1e5" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancialInstrumentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtSecuritiesAvailableForSaleTable_01a087ea-1b01-71cc-b646-4ae75342b90f" xlink:to="loc_us-gaap_FinancialInstrumentAxis_01a087ea-1b01-782d-9b75-b5020efca1e5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_01a087ea-1b01-782d-9b75-b5020efca1e5_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FinancialInstrumentAxis_01a087ea-1b01-782d-9b75-b5020efca1e5" xlink:to="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_01a087ea-1b01-782d-9b75-b5020efca1e5_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_01a087ea-1b01-722c-ab8a-924f5fd24ba0" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FinancialInstrumentAxis_01a087ea-1b01-782d-9b75-b5020efca1e5" xlink:to="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_01a087ea-1b01-722c-ab8a-924f5fd24ba0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_USTreasuryAndGovernmentMember_01a087ea-1b01-7bef-8b0d-20b3e53b5044" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_USTreasuryAndGovernmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_01a087ea-1b01-722c-ab8a-924f5fd24ba0" xlink:to="loc_us-gaap_USTreasuryAndGovernmentMember_01a087ea-1b01-7bef-8b0d-20b3e53b5044" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_USStatesAndPoliticalSubdivisionsMember_01a087ea-1b01-720a-9ff1-7328a6f920b2" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_USStatesAndPoliticalSubdivisionsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_01a087ea-1b01-722c-ab8a-924f5fd24ba0" xlink:to="loc_us-gaap_USStatesAndPoliticalSubdivisionsMember_01a087ea-1b01-720a-9ff1-7328a6f920b2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_USGovernmentSponsoredEnterprisesDebtSecuritiesMember_01a087ea-1b01-7d79-985e-7f2a969b46a1" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_USGovernmentSponsoredEnterprisesDebtSecuritiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_01a087ea-1b01-722c-ab8a-924f5fd24ba0" xlink:to="loc_us-gaap_USGovernmentSponsoredEnterprisesDebtSecuritiesMember_01a087ea-1b01-7d79-985e-7f2a969b46a1" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CorporateDebtSecuritiesMember_01a087ea-1b01-732d-a825-fd2f34428f3f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CorporateDebtSecuritiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_01a087ea-1b01-722c-ab8a-924f5fd24ba0" xlink:to="loc_us-gaap_CorporateDebtSecuritiesMember_01a087ea-1b01-732d-a825-fd2f34428f3f" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CollateralizedMortgageObligationsMember_01a087ea-1b01-716c-9cd7-762d11025d4f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CollateralizedMortgageObligationsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_01a087ea-1b01-722c-ab8a-924f5fd24ba0" xlink:to="loc_us-gaap_CollateralizedMortgageObligationsMember_01a087ea-1b01-716c-9cd7-762d11025d4f" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_boh_ResidentialGovernmentAgenciesOrSponsoredEnterprisesMember_01a087ea-1b01-7312-bd1a-1feac5d2a7fd" xlink:href="boh-20260930.xsd#boh_ResidentialGovernmentAgenciesOrSponsoredEnterprisesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CollateralizedMortgageObligationsMember_01a087ea-1b01-716c-9cd7-762d11025d4f" xlink:to="loc_boh_ResidentialGovernmentAgenciesOrSponsoredEnterprisesMember_01a087ea-1b01-7312-bd1a-1feac5d2a7fd" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_boh_CommercialGovernmentAgenciesOrSponsoredEnterprisesMember_01a087ea-1b01-7e9d-880c-9d9eb6b33bce" xlink:href="boh-20260930.xsd#boh_CommercialGovernmentAgenciesOrSponsoredEnterprisesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CollateralizedMortgageObligationsMember_01a087ea-1b01-716c-9cd7-762d11025d4f" xlink:to="loc_boh_CommercialGovernmentAgenciesOrSponsoredEnterprisesMember_01a087ea-1b01-7e9d-880c-9d9eb6b33bce" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_boh_CommercialNonAgencyMember_01a087ea-1b01-7d51-a45e-1cb168fbf985" xlink:href="boh-20260930.xsd#boh_CommercialNonAgencyMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CollateralizedMortgageObligationsMember_01a087ea-1b01-716c-9cd7-762d11025d4f" xlink:to="loc_boh_CommercialNonAgencyMember_01a087ea-1b01-7d51-a45e-1cb168fbf985" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MortgageBackedSecuritiesMember_01a087ea-1b01-743e-93d9-a740aee9e085" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_MortgageBackedSecuritiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_01a087ea-1b01-722c-ab8a-924f5fd24ba0" xlink:to="loc_us-gaap_MortgageBackedSecuritiesMember_01a087ea-1b01-743e-93d9-a740aee9e085" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_boh_ResidentialMortgageBackedSecuritiesIssuedByUSGovernmentSponsoredEnterprisesMember_01a087ea-1b01-7cc4-841e-5dc4e1dfdcf7" xlink:href="boh-20260930.xsd#boh_ResidentialMortgageBackedSecuritiesIssuedByUSGovernmentSponsoredEnterprisesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MortgageBackedSecuritiesMember_01a087ea-1b01-743e-93d9-a740aee9e085" xlink:to="loc_boh_ResidentialMortgageBackedSecuritiesIssuedByUSGovernmentSponsoredEnterprisesMember_01a087ea-1b01-7cc4-841e-5dc4e1dfdcf7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months_01a087ea-1b01-702d-953f-cb730c11eb70" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_01a087ea-1b01-7aa8-9db8-ce1fb94164f0" xlink:to="loc_us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months_01a087ea-1b01-702d-953f-cb730c11eb70" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss_01a087ea-1b01-72e8-bf1d-f32bbd4434ac" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_01a087ea-1b01-7aa8-9db8-ce1fb94164f0" xlink:to="loc_us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss_01a087ea-1b01-72e8-bf1d-f32bbd4434ac" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger_01a087ea-1b01-755a-b53d-df722ee709dc" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_01a087ea-1b01-7aa8-9db8-ce1fb94164f0" xlink:to="loc_us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger_01a087ea-1b01-755a-b53d-df722ee709dc" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss_01a087ea-1b01-78f6-aaec-874df63493b1" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_01a087ea-1b01-7aa8-9db8-ce1fb94164f0" xlink:to="loc_us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss_01a087ea-1b01-78f6-aaec-874df63493b1" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPosition_01a087ea-1b01-72f5-8fb3-f24a32c14b06" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPosition"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_01a087ea-1b01-7aa8-9db8-ce1fb94164f0" xlink:to="loc_us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPosition_01a087ea-1b01-72f5-8fb3-f24a32c14b06" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss_01a087ea-1b01-7e3b-98be-05742876541f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_01a087ea-1b01-7aa8-9db8-ce1fb94164f0" xlink:to="loc_us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss_01a087ea-1b01-7e3b-98be-05742876541f" xlink:type="arc" order="5"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.boh.com/role/LoansandLeasesandtheAllowanceforCreditLossesScheduleofLoanandLeasePortfolioDetails" xlink:type="simple" xlink:href="boh-20260930.xsd#LoansandLeasesandtheAllowanceforCreditLossesScheduleofLoanandLeasePortfolioDetails"/>
  <link:definitionLink xlink:role="http://www.boh.com/role/LoansandLeasesandtheAllowanceforCreditLossesScheduleofLoanandLeasePortfolioDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_01a087ea-1b01-7c8c-bdca-c466885ea095" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccountsNotesAndLoansReceivableLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable_01a087ea-1b01-748a-a1c2-05f374d812ef" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_01a087ea-1b01-7c8c-bdca-c466885ea095" xlink:to="loc_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable_01a087ea-1b01-748a-a1c2-05f374d812ef" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivablePortfolioSegmentAxis_01a087ea-1b01-742e-b581-c7d8fc2f5e76" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivablePortfolioSegmentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable_01a087ea-1b01-748a-a1c2-05f374d812ef" xlink:to="loc_us-gaap_FinancingReceivablePortfolioSegmentAxis_01a087ea-1b01-742e-b581-c7d8fc2f5e76" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_01a087ea-1b01-742e-b581-c7d8fc2f5e76_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivablePortfolioSegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FinancingReceivablePortfolioSegmentAxis_01a087ea-1b01-742e-b581-c7d8fc2f5e76" xlink:to="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_01a087ea-1b01-742e-b581-c7d8fc2f5e76_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_01a087ea-1b01-7400-97ab-89c4c7320099" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivablePortfolioSegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FinancingReceivablePortfolioSegmentAxis_01a087ea-1b01-742e-b581-c7d8fc2f5e76" xlink:to="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_01a087ea-1b01-7400-97ab-89c4c7320099" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommercialPortfolioSegmentMember_01a087ea-1b01-7961-8f6f-dbb9f9fb70cb" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommercialPortfolioSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_01a087ea-1b01-7400-97ab-89c4c7320099" xlink:to="loc_us-gaap_CommercialPortfolioSegmentMember_01a087ea-1b01-7961-8f6f-dbb9f9fb70cb" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConsumerPortfolioSegmentMember_01a087ea-1b01-7d6a-bf86-99ec1def2449" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ConsumerPortfolioSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_01a087ea-1b01-7400-97ab-89c4c7320099" xlink:to="loc_us-gaap_ConsumerPortfolioSegmentMember_01a087ea-1b01-7d6a-bf86-99ec1def2449" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis_01a087ea-1b01-7c5e-98eb-12397e13b386" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable_01a087ea-1b01-748a-a1c2-05f374d812ef" xlink:to="loc_us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis_01a087ea-1b01-7c5e-98eb-12397e13b386" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_01a087ea-1b01-7c5e-98eb-12397e13b386_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis_01a087ea-1b01-7c5e-98eb-12397e13b386" xlink:to="loc_us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_01a087ea-1b01-7c5e-98eb-12397e13b386_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_01a087ea-1b01-7d9b-b9d4-32f2b5ad79f5" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis_01a087ea-1b01-7c5e-98eb-12397e13b386" xlink:to="loc_us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_01a087ea-1b01-7d9b-b9d4-32f2b5ad79f5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_boh_CommercialMortgageMember_01a087ea-1b01-7603-b64c-2b399946801a" xlink:href="boh-20260930.xsd#boh_CommercialMortgageMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_01a087ea-1b01-7d9b-b9d4-32f2b5ad79f5" xlink:to="loc_boh_CommercialMortgageMember_01a087ea-1b01-7603-b64c-2b399946801a" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_boh_CommercialAndIndustrialMember_01a087ea-1b01-7456-a0a8-1535b628c29f" xlink:href="boh-20260930.xsd#boh_CommercialAndIndustrialMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_01a087ea-1b01-7d9b-b9d4-32f2b5ad79f5" xlink:to="loc_boh_CommercialAndIndustrialMember_01a087ea-1b01-7456-a0a8-1535b628c29f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConstructionLoansMember_01a087ea-1b01-793f-bdd5-41f66c90bc6d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ConstructionLoansMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_01a087ea-1b01-7d9b-b9d4-32f2b5ad79f5" xlink:to="loc_us-gaap_ConstructionLoansMember_01a087ea-1b01-793f-bdd5-41f66c90bc6d" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_boh_LeaseFinancingMember_01a087ea-1b01-7d99-bd59-79fae1b57c9f" xlink:href="boh-20260930.xsd#boh_LeaseFinancingMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_01a087ea-1b01-7d9b-b9d4-32f2b5ad79f5" xlink:to="loc_boh_LeaseFinancingMember_01a087ea-1b01-7d99-bd59-79fae1b57c9f" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ResidentialMortgageMember_01a087ea-1b01-7955-ab6d-0fe5e4ed020f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ResidentialMortgageMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_01a087ea-1b01-7d9b-b9d4-32f2b5ad79f5" xlink:to="loc_us-gaap_ResidentialMortgageMember_01a087ea-1b01-7955-ab6d-0fe5e4ed020f" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HomeEquityMember_01a087ea-1b01-7397-b1c7-ff1a8e0b2146" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_HomeEquityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_01a087ea-1b01-7d9b-b9d4-32f2b5ad79f5" xlink:to="loc_us-gaap_HomeEquityMember_01a087ea-1b01-7397-b1c7-ff1a8e0b2146" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AutomobileLoanMember_01a087ea-1b01-7615-9a2f-c846c4fb5781" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AutomobileLoanMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_01a087ea-1b01-7d9b-b9d4-32f2b5ad79f5" xlink:to="loc_us-gaap_AutomobileLoanMember_01a087ea-1b01-7615-9a2f-c846c4fb5781" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConsumerOtherMember_01a087ea-1b01-74c2-934d-d8b7982008b7" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ConsumerOtherMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_01a087ea-1b01-7d9b-b9d4-32f2b5ad79f5" xlink:to="loc_us-gaap_ConsumerOtherMember_01a087ea-1b01-74c2-934d-d8b7982008b7" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss_01a087ea-1b01-7709-b44a-60561400dd52" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_01a087ea-1b01-7c8c-bdca-c466885ea095" xlink:to="loc_us-gaap_FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss_01a087ea-1b01-7709-b44a-60561400dd52" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.boh.com/role/LoansandLeasesandtheAllowanceforCreditLossesAdditionalInformationDetails" xlink:type="simple" xlink:href="boh-20260930.xsd#LoansandLeasesandtheAllowanceforCreditLossesAdditionalInformationDetails"/>
  <link:definitionLink xlink:role="http://www.boh.com/role/LoansandLeasesandtheAllowanceforCreditLossesAdditionalInformationDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_01a087ea-1b01-75bc-ab59-46c969aa0b9b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccountsNotesAndLoansReceivableLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable_01a087ea-1b01-792d-b00b-91571e196dd4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_01a087ea-1b01-75bc-ab59-46c969aa0b9b" xlink:to="loc_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable_01a087ea-1b01-792d-b00b-91571e196dd4" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivablePortfolioSegmentAxis_01a087ea-1b01-764b-8b54-e42c781918d2" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivablePortfolioSegmentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable_01a087ea-1b01-792d-b00b-91571e196dd4" xlink:to="loc_us-gaap_FinancingReceivablePortfolioSegmentAxis_01a087ea-1b01-764b-8b54-e42c781918d2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_01a087ea-1b01-764b-8b54-e42c781918d2_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivablePortfolioSegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FinancingReceivablePortfolioSegmentAxis_01a087ea-1b01-764b-8b54-e42c781918d2" xlink:to="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_01a087ea-1b01-764b-8b54-e42c781918d2_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_01a087ea-1b01-7846-a67c-abe617081b3f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivablePortfolioSegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FinancingReceivablePortfolioSegmentAxis_01a087ea-1b01-764b-8b54-e42c781918d2" xlink:to="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_01a087ea-1b01-7846-a67c-abe617081b3f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConsumerPortfolioSegmentMember_01a087ea-1b01-7a3d-9011-7fc56ee0f0d2" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ConsumerPortfolioSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_01a087ea-1b01-7846-a67c-abe617081b3f" xlink:to="loc_us-gaap_ConsumerPortfolioSegmentMember_01a087ea-1b01-7a3d-9011-7fc56ee0f0d2" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_01a087ea-1b01-7bc0-b5f4-c32ca2c24fc8" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_RangeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable_01a087ea-1b01-792d-b00b-91571e196dd4" xlink:to="loc_srt_RangeAxis_01a087ea-1b01-7bc0-b5f4-c32ca2c24fc8" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_01a087ea-1b01-7bc0-b5f4-c32ca2c24fc8_default" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_01a087ea-1b01-7bc0-b5f4-c32ca2c24fc8" xlink:to="loc_srt_RangeMember_01a087ea-1b01-7bc0-b5f4-c32ca2c24fc8_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_01a087ea-1b01-7ae4-833e-747f9652168f" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_01a087ea-1b01-7bc0-b5f4-c32ca2c24fc8" xlink:to="loc_srt_RangeMember_01a087ea-1b01-7ae4-833e-747f9652168f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_01a087ea-1b01-7f73-8eec-204a28a9a1d0" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_MaximumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_01a087ea-1b01-7ae4-833e-747f9652168f" xlink:to="loc_srt_MaximumMember_01a087ea-1b01-7f73-8eec-204a28a9a1d0" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember_01a087ea-1b01-7149-b388-70e0f071a408" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_MinimumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_01a087ea-1b01-7ae4-833e-747f9652168f" xlink:to="loc_srt_MinimumMember_01a087ea-1b01-7149-b388-70e0f071a408" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InternalCreditAssessmentAxis_01a087ea-1b01-7e81-8dd1-8da0e954f08d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InternalCreditAssessmentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable_01a087ea-1b01-792d-b00b-91571e196dd4" xlink:to="loc_us-gaap_InternalCreditAssessmentAxis_01a087ea-1b01-7e81-8dd1-8da0e954f08d" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InternalCreditAssessmentDomain_01a087ea-1b01-7e81-8dd1-8da0e954f08d_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InternalCreditAssessmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_InternalCreditAssessmentAxis_01a087ea-1b01-7e81-8dd1-8da0e954f08d" xlink:to="loc_us-gaap_InternalCreditAssessmentDomain_01a087ea-1b01-7e81-8dd1-8da0e954f08d_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InternalCreditAssessmentDomain_01a087ea-1b01-7c84-8e2f-23eb281523c5" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InternalCreditAssessmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_InternalCreditAssessmentAxis_01a087ea-1b01-7e81-8dd1-8da0e954f08d" xlink:to="loc_us-gaap_InternalCreditAssessmentDomain_01a087ea-1b01-7c84-8e2f-23eb281523c5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PassMember_01a087ea-1b01-7b76-bd78-b55ed24f7312" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PassMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_InternalCreditAssessmentDomain_01a087ea-1b01-7c84-8e2f-23eb281523c5" xlink:to="loc_us-gaap_PassMember_01a087ea-1b01-7b76-bd78-b55ed24f7312" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubstandardMember_01a087ea-1b01-7818-9610-8636bd4e9b62" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SubstandardMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_InternalCreditAssessmentDomain_01a087ea-1b01-7c84-8e2f-23eb281523c5" xlink:to="loc_us-gaap_SubstandardMember_01a087ea-1b01-7818-9610-8636bd4e9b62" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis_01a087ea-1b01-7554-95fd-34eb870c578e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable_01a087ea-1b01-792d-b00b-91571e196dd4" xlink:to="loc_us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis_01a087ea-1b01-7554-95fd-34eb870c578e" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_01a087ea-1b01-7554-95fd-34eb870c578e_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis_01a087ea-1b01-7554-95fd-34eb870c578e" xlink:to="loc_us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_01a087ea-1b01-7554-95fd-34eb870c578e_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_01a087ea-1b01-7992-9c0d-bcfb9e5454a3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis_01a087ea-1b01-7554-95fd-34eb870c578e" xlink:to="loc_us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_01a087ea-1b01-7992-9c0d-bcfb9e5454a3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ResidentialMortgageMember_01a087ea-1b01-78d2-a14f-7a385cda5758" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ResidentialMortgageMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_01a087ea-1b01-7992-9c0d-bcfb9e5454a3" xlink:to="loc_us-gaap_ResidentialMortgageMember_01a087ea-1b01-78d2-a14f-7a385cda5758" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HomeEquityMember_01a087ea-1b01-7934-9ec0-e0f6f36cdaeb" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_HomeEquityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_01a087ea-1b01-7992-9c0d-bcfb9e5454a3" xlink:to="loc_us-gaap_HomeEquityMember_01a087ea-1b01-7934-9ec0-e0f6f36cdaeb" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentRiskAxis_01a087ea-1b01-72dd-87d4-fbe7370aa790" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeInstrumentRiskAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable_01a087ea-1b01-792d-b00b-91571e196dd4" xlink:to="loc_us-gaap_DerivativeInstrumentRiskAxis_01a087ea-1b01-72dd-87d4-fbe7370aa790" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_01a087ea-1b01-72dd-87d4-fbe7370aa790_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_01a087ea-1b01-72dd-87d4-fbe7370aa790" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_01a087ea-1b01-72dd-87d4-fbe7370aa790_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_01a087ea-1b01-751c-bf24-1d780bf33ed0" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_01a087ea-1b01-72dd-87d4-fbe7370aa790" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_01a087ea-1b01-751c-bf24-1d780bf33ed0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestRateSwapMember_01a087ea-1b01-7453-812c-adf1daad8341" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InterestRateSwapMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_01a087ea-1b01-751c-bf24-1d780bf33ed0" xlink:to="loc_us-gaap_InterestRateSwapMember_01a087ea-1b01-7453-812c-adf1daad8341" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableAccruedInterestAfterAllowanceForCreditLoss_01a087ea-1b01-7f92-b08e-94e06e2d9a45" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableAccruedInterestAfterAllowanceForCreditLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_01a087ea-1b01-75bc-ab59-46c969aa0b9b" xlink:to="loc_us-gaap_FinancingReceivableAccruedInterestAfterAllowanceForCreditLoss_01a087ea-1b01-7f92-b08e-94e06e2d9a45" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_boh_FinancingReceivablePastDueForLoansAndLeasesToBeClassifiedAsClassifiedCreditQualityIndicatorPeriod_01a087ea-1b01-7473-8c24-843853f94ccc" xlink:href="boh-20260930.xsd#boh_FinancingReceivablePastDueForLoansAndLeasesToBeClassifiedAsClassifiedCreditQualityIndicatorPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_01a087ea-1b01-75bc-ab59-46c969aa0b9b" xlink:to="loc_boh_FinancingReceivablePastDueForLoansAndLeasesToBeClassifiedAsClassifiedCreditQualityIndicatorPeriod_01a087ea-1b01-7473-8c24-843853f94ccc" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_boh_FinancingReceivableCreditQualityCurrentLoanToValueRatioPercentageMaximum_01a087ea-1b01-769f-9e88-a6418f7330f8" xlink:href="boh-20260930.xsd#boh_FinancingReceivableCreditQualityCurrentLoanToValueRatioPercentageMaximum"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_01a087ea-1b01-75bc-ab59-46c969aa0b9b" xlink:to="loc_boh_FinancingReceivableCreditQualityCurrentLoanToValueRatioPercentageMaximum_01a087ea-1b01-769f-9e88-a6418f7330f8" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_boh_FinancingReceivableCreditQualityCurrentCombinedLoanToValueRatioPercentageMaximum_01a087ea-1b01-74b9-891d-9c097cb1209f" xlink:href="boh-20260930.xsd#boh_FinancingReceivableCreditQualityCurrentCombinedLoanToValueRatioPercentageMaximum"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_01a087ea-1b01-75bc-ab59-46c969aa0b9b" xlink:to="loc_boh_FinancingReceivableCreditQualityCurrentCombinedLoanToValueRatioPercentageMaximum_01a087ea-1b01-74b9-891d-9c097cb1209f" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableRevolvingConvertedToTermLoanDuringPeriod_01a087ea-1b01-7347-8fba-16eba346a076" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableRevolvingConvertedToTermLoanDuringPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_01a087ea-1b01-75bc-ab59-46c969aa0b9b" xlink:to="loc_us-gaap_FinancingReceivableRevolvingConvertedToTermLoanDuringPeriod_01a087ea-1b01-7347-8fba-16eba346a076" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableThresholdPeriodPastDue_01a087ea-1b01-7a09-a360-c827a6607f52" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableThresholdPeriodPastDue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_01a087ea-1b01-75bc-ab59-46c969aa0b9b" xlink:to="loc_us-gaap_FinancingReceivableThresholdPeriodPastDue_01a087ea-1b01-7a09-a360-c827a6607f52" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MortgageLoansInProcessOfForeclosureAmount_01a087ea-1b01-7b90-b0fb-f57381169c81" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_MortgageLoansInProcessOfForeclosureAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_01a087ea-1b01-75bc-ab59-46c969aa0b9b" xlink:to="loc_us-gaap_MortgageLoansInProcessOfForeclosureAmount_01a087ea-1b01-7b90-b0fb-f57381169c81" xlink:type="arc" order="6"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.boh.com/role/LoansandLeasesandtheAllowanceforCreditLossesScheduleofActivityinAllowancebyPortfolioSegmentDetails" xlink:type="simple" xlink:href="boh-20260930.xsd#LoansandLeasesandtheAllowanceforCreditLossesScheduleofActivityinAllowancebyPortfolioSegmentDetails"/>
  <link:definitionLink xlink:role="http://www.boh.com/role/LoansandLeasesandtheAllowanceforCreditLossesScheduleofActivityinAllowancebyPortfolioSegmentDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableAllowanceForCreditLossesLineItems_01a087ea-1b01-7c0c-ba16-b0fd8b9e0696" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableAllowanceForCreditLossesLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfFinancingReceivableAllowanceForCreditLossesTable_01a087ea-1b01-77e9-a97f-5300186ee5d2" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfFinancingReceivableAllowanceForCreditLossesTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FinancingReceivableAllowanceForCreditLossesLineItems_01a087ea-1b01-7c0c-ba16-b0fd8b9e0696" xlink:to="loc_us-gaap_ScheduleOfFinancingReceivableAllowanceForCreditLossesTable_01a087ea-1b01-77e9-a97f-5300186ee5d2" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivablePortfolioSegmentAxis_01a087ea-1b01-7ef5-997e-123587b97d54" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivablePortfolioSegmentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfFinancingReceivableAllowanceForCreditLossesTable_01a087ea-1b01-77e9-a97f-5300186ee5d2" xlink:to="loc_us-gaap_FinancingReceivablePortfolioSegmentAxis_01a087ea-1b01-7ef5-997e-123587b97d54" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_01a087ea-1b01-7ef5-997e-123587b97d54_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivablePortfolioSegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FinancingReceivablePortfolioSegmentAxis_01a087ea-1b01-7ef5-997e-123587b97d54" xlink:to="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_01a087ea-1b01-7ef5-997e-123587b97d54_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_01a087ea-1b01-7573-93f0-113d322636bd" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivablePortfolioSegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FinancingReceivablePortfolioSegmentAxis_01a087ea-1b01-7ef5-997e-123587b97d54" xlink:to="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_01a087ea-1b01-7573-93f0-113d322636bd" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommercialPortfolioSegmentMember_01a087ea-1b01-77ce-872c-812e4679817b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommercialPortfolioSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_01a087ea-1b01-7573-93f0-113d322636bd" xlink:to="loc_us-gaap_CommercialPortfolioSegmentMember_01a087ea-1b01-77ce-872c-812e4679817b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConsumerPortfolioSegmentMember_01a087ea-1b01-7dca-a753-34142b85f5e0" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ConsumerPortfolioSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_01a087ea-1b01-7573-93f0-113d322636bd" xlink:to="loc_us-gaap_ConsumerPortfolioSegmentMember_01a087ea-1b01-7dca-a753-34142b85f5e0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableAllowanceForCreditLossesRollForward_01a087ea-1b01-761d-aa29-c62be65eda25" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableAllowanceForCreditLossesRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableAllowanceForCreditLossesLineItems_01a087ea-1b01-7c0c-ba16-b0fd8b9e0696" xlink:to="loc_us-gaap_FinancingReceivableAllowanceForCreditLossesRollForward_01a087ea-1b01-761d-aa29-c62be65eda25" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest_01a087ea-1b01-7088-909c-d9b4d6d02497" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableAllowanceForCreditLossesRollForward_01a087ea-1b01-761d-aa29-c62be65eda25" xlink:to="loc_us-gaap_FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest_01a087ea-1b01-7088-909c-d9b4d6d02497" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableExcludingAccruedInterestAllowanceForCreditLossWriteoff_01a087ea-1b01-7f67-a425-6dd33256f319" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableExcludingAccruedInterestAllowanceForCreditLossWriteoff"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableAllowanceForCreditLossesRollForward_01a087ea-1b01-761d-aa29-c62be65eda25" xlink:to="loc_us-gaap_FinancingReceivableExcludingAccruedInterestAllowanceForCreditLossWriteoff_01a087ea-1b01-7f67-a425-6dd33256f319" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableExcludingAccruedInterestAllowanceForCreditLossRecovery_01a087ea-1b01-7ca1-8ceb-385551c7d28d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableExcludingAccruedInterestAllowanceForCreditLossRecovery"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableAllowanceForCreditLossesRollForward_01a087ea-1b01-761d-aa29-c62be65eda25" xlink:to="loc_us-gaap_FinancingReceivableExcludingAccruedInterestAllowanceForCreditLossRecovery_01a087ea-1b01-7ca1-8ceb-385551c7d28d" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableExcludingAccruedInterestAllowanceForCreditLossWriteoffAfterRecovery_01a087ea-1b01-7e7a-a627-7d5aa603f340" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableExcludingAccruedInterestAllowanceForCreditLossWriteoffAfterRecovery"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableAllowanceForCreditLossesRollForward_01a087ea-1b01-761d-aa29-c62be65eda25" xlink:to="loc_us-gaap_FinancingReceivableExcludingAccruedInterestAllowanceForCreditLossWriteoffAfterRecovery_01a087ea-1b01-7e7a-a627-7d5aa603f340" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProvisionForLoanLossesExpensed_01a087ea-1b01-758a-8881-563e8672a190" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ProvisionForLoanLossesExpensed"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableAllowanceForCreditLossesRollForward_01a087ea-1b01-761d-aa29-c62be65eda25" xlink:to="loc_us-gaap_ProvisionForLoanLossesExpensed_01a087ea-1b01-758a-8881-563e8672a190" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest_01a087ea-1b01-7f4a-a855-7d279c21f09e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.boh.com/role/LoansandLeasesandtheAllowanceforCreditLossesScheduleofAmortizedCostBasisofLoansandLeasesbyCreditQualityIndicatorLoanClassandYearofOriginationDetails" xlink:type="simple" xlink:href="boh-20260930.xsd#LoansandLeasesandtheAllowanceforCreditLossesScheduleofAmortizedCostBasisofLoansandLeasesbyCreditQualityIndicatorLoanClassandYearofOriginationDetails"/>
  <link:definitionLink xlink:role="http://www.boh.com/role/LoansandLeasesandtheAllowanceforCreditLossesScheduleofAmortizedCostBasisofLoansandLeasesbyCreditQualityIndicatorLoanClassandYearofOriginationDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableRecordedInvestmentLineItems_01a087ea-1b01-73fc-9431-da90a0664a1f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableRecordedInvestmentLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfFinancingReceivableRecordedInvestmentCreditQualityIndicatorTable_01a087ea-1b01-71ef-adcb-f1f036b081f9" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfFinancingReceivableRecordedInvestmentCreditQualityIndicatorTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentLineItems_01a087ea-1b01-73fc-9431-da90a0664a1f" xlink:to="loc_us-gaap_ScheduleOfFinancingReceivableRecordedInvestmentCreditQualityIndicatorTable_01a087ea-1b01-71ef-adcb-f1f036b081f9" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivablePortfolioSegmentAxis_01a087ea-1b01-7e80-993f-fd16146fe39b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivablePortfolioSegmentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfFinancingReceivableRecordedInvestmentCreditQualityIndicatorTable_01a087ea-1b01-71ef-adcb-f1f036b081f9" xlink:to="loc_us-gaap_FinancingReceivablePortfolioSegmentAxis_01a087ea-1b01-7e80-993f-fd16146fe39b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_01a087ea-1b01-7e80-993f-fd16146fe39b_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivablePortfolioSegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FinancingReceivablePortfolioSegmentAxis_01a087ea-1b01-7e80-993f-fd16146fe39b" xlink:to="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_01a087ea-1b01-7e80-993f-fd16146fe39b_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_01a087ea-1b01-7720-8569-af21ad32e388" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivablePortfolioSegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FinancingReceivablePortfolioSegmentAxis_01a087ea-1b01-7e80-993f-fd16146fe39b" xlink:to="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_01a087ea-1b01-7720-8569-af21ad32e388" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommercialPortfolioSegmentMember_01a087ea-1b01-77ad-bdf9-9b0cbe59507b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommercialPortfolioSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_01a087ea-1b01-7720-8569-af21ad32e388" xlink:to="loc_us-gaap_CommercialPortfolioSegmentMember_01a087ea-1b01-77ad-bdf9-9b0cbe59507b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConsumerPortfolioSegmentMember_01a087ea-1b01-7b31-901b-49bfdf5725b2" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ConsumerPortfolioSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_01a087ea-1b01-7720-8569-af21ad32e388" xlink:to="loc_us-gaap_ConsumerPortfolioSegmentMember_01a087ea-1b01-7b31-901b-49bfdf5725b2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis_01a087ea-1b01-761b-8f62-b729ceba3503" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfFinancingReceivableRecordedInvestmentCreditQualityIndicatorTable_01a087ea-1b01-71ef-adcb-f1f036b081f9" xlink:to="loc_us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis_01a087ea-1b01-761b-8f62-b729ceba3503" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_01a087ea-1b01-761b-8f62-b729ceba3503_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis_01a087ea-1b01-761b-8f62-b729ceba3503" xlink:to="loc_us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_01a087ea-1b01-761b-8f62-b729ceba3503_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_01a087ea-1b01-7d7b-8429-2d1ba336f153" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis_01a087ea-1b01-761b-8f62-b729ceba3503" xlink:to="loc_us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_01a087ea-1b01-7d7b-8429-2d1ba336f153" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommercialRealEstateMember_01a087ea-1b01-754c-8f1a-d7063089d614" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommercialRealEstateMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_01a087ea-1b01-7d7b-8429-2d1ba336f153" xlink:to="loc_us-gaap_CommercialRealEstateMember_01a087ea-1b01-754c-8f1a-d7063089d614" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_boh_CommercialAndIndustrialMember_01a087ea-1b01-7de0-a1a0-bbbd83c70b1e" xlink:href="boh-20260930.xsd#boh_CommercialAndIndustrialMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_01a087ea-1b01-7d7b-8429-2d1ba336f153" xlink:to="loc_boh_CommercialAndIndustrialMember_01a087ea-1b01-7de0-a1a0-bbbd83c70b1e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConstructionLoansMember_01a087ea-1b01-79da-97f7-38f84c061919" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ConstructionLoansMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_01a087ea-1b01-7d7b-8429-2d1ba336f153" xlink:to="loc_us-gaap_ConstructionLoansMember_01a087ea-1b01-79da-97f7-38f84c061919" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_boh_LeaseFinancingMember_01a087ea-1b01-7b4d-b04a-955638b12aaa" xlink:href="boh-20260930.xsd#boh_LeaseFinancingMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_01a087ea-1b01-7d7b-8429-2d1ba336f153" xlink:to="loc_boh_LeaseFinancingMember_01a087ea-1b01-7b4d-b04a-955638b12aaa" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ResidentialMortgageMember_01a087ea-1b01-7bab-932a-4eedab1acc4b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ResidentialMortgageMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_01a087ea-1b01-7d7b-8429-2d1ba336f153" xlink:to="loc_us-gaap_ResidentialMortgageMember_01a087ea-1b01-7bab-932a-4eedab1acc4b" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HomeEquityLoanMember_01a087ea-1b01-77b0-902b-54c13d012855" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_HomeEquityLoanMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_01a087ea-1b01-7d7b-8429-2d1ba336f153" xlink:to="loc_us-gaap_HomeEquityLoanMember_01a087ea-1b01-77b0-902b-54c13d012855" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AutomobileLoanMember_01a087ea-1b01-74e1-afab-16d8b1fe6404" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AutomobileLoanMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_01a087ea-1b01-7d7b-8429-2d1ba336f153" xlink:to="loc_us-gaap_AutomobileLoanMember_01a087ea-1b01-74e1-afab-16d8b1fe6404" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConsumerOtherMember_01a087ea-1b01-7451-9345-14cb46819d75" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ConsumerOtherMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_01a087ea-1b01-7d7b-8429-2d1ba336f153" xlink:to="loc_us-gaap_ConsumerOtherMember_01a087ea-1b01-7451-9345-14cb46819d75" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InternalCreditAssessmentAxis_01a087ea-1b01-7a48-b8d9-dfe81ab58cd4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InternalCreditAssessmentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfFinancingReceivableRecordedInvestmentCreditQualityIndicatorTable_01a087ea-1b01-71ef-adcb-f1f036b081f9" xlink:to="loc_us-gaap_InternalCreditAssessmentAxis_01a087ea-1b01-7a48-b8d9-dfe81ab58cd4" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InternalCreditAssessmentDomain_01a087ea-1b01-7a48-b8d9-dfe81ab58cd4_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InternalCreditAssessmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_InternalCreditAssessmentAxis_01a087ea-1b01-7a48-b8d9-dfe81ab58cd4" xlink:to="loc_us-gaap_InternalCreditAssessmentDomain_01a087ea-1b01-7a48-b8d9-dfe81ab58cd4_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InternalCreditAssessmentDomain_01a087ea-1b01-721a-ace4-4d070d2f7d00" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InternalCreditAssessmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_InternalCreditAssessmentAxis_01a087ea-1b01-7a48-b8d9-dfe81ab58cd4" xlink:to="loc_us-gaap_InternalCreditAssessmentDomain_01a087ea-1b01-721a-ace4-4d070d2f7d00" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PassMember_01a087ea-1b01-7db9-8f5a-61f2a85942b6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PassMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_InternalCreditAssessmentDomain_01a087ea-1b01-721a-ace4-4d070d2f7d00" xlink:to="loc_us-gaap_PassMember_01a087ea-1b01-7db9-8f5a-61f2a85942b6" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SpecialMentionMember_01a087ea-1b01-754c-b559-c3af149fab4f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SpecialMentionMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_InternalCreditAssessmentDomain_01a087ea-1b01-721a-ace4-4d070d2f7d00" xlink:to="loc_us-gaap_SpecialMentionMember_01a087ea-1b01-754c-b559-c3af149fab4f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubstandardMember_01a087ea-1b01-7f15-a2ed-e41405e97cfa" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SubstandardMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_InternalCreditAssessmentDomain_01a087ea-1b01-721a-ace4-4d070d2f7d00" xlink:to="loc_us-gaap_SubstandardMember_01a087ea-1b01-7f15-a2ed-e41405e97cfa" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableExcludingAccruedInterestYearOneOriginatedCurrentFiscalYear_01a087ea-1b01-788b-945d-6720ee9bf53e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableExcludingAccruedInterestYearOneOriginatedCurrentFiscalYear"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentLineItems_01a087ea-1b01-73fc-9431-da90a0664a1f" xlink:to="loc_us-gaap_FinancingReceivableExcludingAccruedInterestYearOneOriginatedCurrentFiscalYear_01a087ea-1b01-788b-945d-6720ee9bf53e" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableExcludingAccruedInterestYearTwoOriginatedFiscalYearBeforeCurrentFiscalYear_01a087ea-1b01-7928-b33a-b210254fd6c3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableExcludingAccruedInterestYearTwoOriginatedFiscalYearBeforeCurrentFiscalYear"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentLineItems_01a087ea-1b01-73fc-9431-da90a0664a1f" xlink:to="loc_us-gaap_FinancingReceivableExcludingAccruedInterestYearTwoOriginatedFiscalYearBeforeCurrentFiscalYear_01a087ea-1b01-7928-b33a-b210254fd6c3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableExcludingAccruedInterestYearThreeOriginatedTwoYearsBeforeCurrentFiscalYear_01a087ea-1b01-7655-8d5f-b5083ace37ed" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableExcludingAccruedInterestYearThreeOriginatedTwoYearsBeforeCurrentFiscalYear"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentLineItems_01a087ea-1b01-73fc-9431-da90a0664a1f" xlink:to="loc_us-gaap_FinancingReceivableExcludingAccruedInterestYearThreeOriginatedTwoYearsBeforeCurrentFiscalYear_01a087ea-1b01-7655-8d5f-b5083ace37ed" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableExcludingAccruedInterestYearFourOriginatedThreeYearsBeforeCurrentFiscalYear_01a087ea-1b01-798c-9f21-a0c0cbd79378" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableExcludingAccruedInterestYearFourOriginatedThreeYearsBeforeCurrentFiscalYear"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentLineItems_01a087ea-1b01-73fc-9431-da90a0664a1f" xlink:to="loc_us-gaap_FinancingReceivableExcludingAccruedInterestYearFourOriginatedThreeYearsBeforeCurrentFiscalYear_01a087ea-1b01-798c-9f21-a0c0cbd79378" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableExcludingAccruedInterestYearFiveOriginatedFourYearsBeforeCurrentFiscalYear_01a087ea-1b01-7975-a989-a9fef52203e5" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableExcludingAccruedInterestYearFiveOriginatedFourYearsBeforeCurrentFiscalYear"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentLineItems_01a087ea-1b01-73fc-9431-da90a0664a1f" xlink:to="loc_us-gaap_FinancingReceivableExcludingAccruedInterestYearFiveOriginatedFourYearsBeforeCurrentFiscalYear_01a087ea-1b01-7975-a989-a9fef52203e5" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableExcludingAccruedInterestOriginatedMoreThanFiveYearsBeforeCurrentFiscalYear_01a087ea-1b01-7e9b-840b-6c3a703e42e1" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableExcludingAccruedInterestOriginatedMoreThanFiveYearsBeforeCurrentFiscalYear"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentLineItems_01a087ea-1b01-73fc-9431-da90a0664a1f" xlink:to="loc_us-gaap_FinancingReceivableExcludingAccruedInterestOriginatedMoreThanFiveYearsBeforeCurrentFiscalYear_01a087ea-1b01-7e9b-840b-6c3a703e42e1" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableExcludingAccruedInterestRevolving_01a087ea-1b01-7d9b-893f-7e53853e88e7" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableExcludingAccruedInterestRevolving"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentLineItems_01a087ea-1b01-73fc-9431-da90a0664a1f" xlink:to="loc_us-gaap_FinancingReceivableExcludingAccruedInterestRevolving_01a087ea-1b01-7d9b-893f-7e53853e88e7" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableExcludingAccruedInterestRevolvingConvertedToTermLoan_01a087ea-1b01-7480-b60d-d91f5fdd4976" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableExcludingAccruedInterestRevolvingConvertedToTermLoan"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentLineItems_01a087ea-1b01-73fc-9431-da90a0664a1f" xlink:to="loc_us-gaap_FinancingReceivableExcludingAccruedInterestRevolvingConvertedToTermLoan_01a087ea-1b01-7480-b60d-d91f5fdd4976" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss_01a087ea-1b01-79d2-9496-0d108165280a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentLineItems_01a087ea-1b01-73fc-9431-da90a0664a1f" xlink:to="loc_us-gaap_FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss_01a087ea-1b01-79d2-9496-0d108165280a" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableExcludingAccruedInterestYearOneOriginatedCurrentFiscalYearWriteoff_01a087ea-1b01-7aaa-8358-47d5a21ef247" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableExcludingAccruedInterestYearOneOriginatedCurrentFiscalYearWriteoff"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentLineItems_01a087ea-1b01-73fc-9431-da90a0664a1f" xlink:to="loc_us-gaap_FinancingReceivableExcludingAccruedInterestYearOneOriginatedCurrentFiscalYearWriteoff_01a087ea-1b01-7aaa-8358-47d5a21ef247" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableExcludingAccruedInterestYearTwoOriginatedFiscalYearBeforeCurrentFiscalYearWriteoff_01a087ea-1b01-79d4-bedd-b8e585892deb" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableExcludingAccruedInterestYearTwoOriginatedFiscalYearBeforeCurrentFiscalYearWriteoff"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentLineItems_01a087ea-1b01-73fc-9431-da90a0664a1f" xlink:to="loc_us-gaap_FinancingReceivableExcludingAccruedInterestYearTwoOriginatedFiscalYearBeforeCurrentFiscalYearWriteoff_01a087ea-1b01-79d4-bedd-b8e585892deb" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableExcludingAccruedInterestYearThreeOriginatedTwoYearsBeforeCurrentFiscalYearWriteoff_01a087ea-1b01-793f-90ac-929e9d8d8298" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableExcludingAccruedInterestYearThreeOriginatedTwoYearsBeforeCurrentFiscalYearWriteoff"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentLineItems_01a087ea-1b01-73fc-9431-da90a0664a1f" xlink:to="loc_us-gaap_FinancingReceivableExcludingAccruedInterestYearThreeOriginatedTwoYearsBeforeCurrentFiscalYearWriteoff_01a087ea-1b01-793f-90ac-929e9d8d8298" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableExcludingAccruedInterestYearFourOriginatedThreeYearsBeforeCurrentFiscalYearWriteoff_01a087ea-1b01-74b8-82e1-1074cdd91818" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableExcludingAccruedInterestYearFourOriginatedThreeYearsBeforeCurrentFiscalYearWriteoff"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentLineItems_01a087ea-1b01-73fc-9431-da90a0664a1f" xlink:to="loc_us-gaap_FinancingReceivableExcludingAccruedInterestYearFourOriginatedThreeYearsBeforeCurrentFiscalYearWriteoff_01a087ea-1b01-74b8-82e1-1074cdd91818" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableExcludingAccruedInterestYearFiveOriginatedFourYearsBeforeCurrentFiscalYearWriteoff_01a087ea-1b01-705f-a273-ab36c516f446" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableExcludingAccruedInterestYearFiveOriginatedFourYearsBeforeCurrentFiscalYearWriteoff"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentLineItems_01a087ea-1b01-73fc-9431-da90a0664a1f" xlink:to="loc_us-gaap_FinancingReceivableExcludingAccruedInterestYearFiveOriginatedFourYearsBeforeCurrentFiscalYearWriteoff_01a087ea-1b01-705f-a273-ab36c516f446" xlink:type="arc" order="13"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableExcludingAccruedInterestOriginatedMoreThanFiveYearsBeforeCurrentFiscalYearWriteoff_01a087ea-1b01-7107-a534-fcaded549f41" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableExcludingAccruedInterestOriginatedMoreThanFiveYearsBeforeCurrentFiscalYearWriteoff"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentLineItems_01a087ea-1b01-73fc-9431-da90a0664a1f" xlink:to="loc_us-gaap_FinancingReceivableExcludingAccruedInterestOriginatedMoreThanFiveYearsBeforeCurrentFiscalYearWriteoff_01a087ea-1b01-7107-a534-fcaded549f41" xlink:type="arc" order="14"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableExcludingAccruedInterestRevolvingWriteoff_01a087ea-1b01-749f-9586-bf4ff63bb762" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableExcludingAccruedInterestRevolvingWriteoff"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentLineItems_01a087ea-1b01-73fc-9431-da90a0664a1f" xlink:to="loc_us-gaap_FinancingReceivableExcludingAccruedInterestRevolvingWriteoff_01a087ea-1b01-749f-9586-bf4ff63bb762" xlink:type="arc" order="15"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableExcludingAccruedInterestRevolvingConvertedToTermLoanWriteoff_01a087ea-1b01-73a5-8ddb-ec6e19d810a9" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableExcludingAccruedInterestRevolvingConvertedToTermLoanWriteoff"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentLineItems_01a087ea-1b01-73fc-9431-da90a0664a1f" xlink:to="loc_us-gaap_FinancingReceivableExcludingAccruedInterestRevolvingConvertedToTermLoanWriteoff_01a087ea-1b01-73a5-8ddb-ec6e19d810a9" xlink:type="arc" order="16"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableExcludingAccruedInterestAllowanceForCreditLossWriteoff_01a087ea-1b01-7a11-b1f6-e6a1e804697b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableExcludingAccruedInterestAllowanceForCreditLossWriteoff"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentLineItems_01a087ea-1b01-73fc-9431-da90a0664a1f" xlink:to="loc_us-gaap_FinancingReceivableExcludingAccruedInterestAllowanceForCreditLossWriteoff_01a087ea-1b01-7a11-b1f6-e6a1e804697b" xlink:type="arc" order="17"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.boh.com/role/LoansandLeasesandtheAllowanceforCreditLossesScheduleofAgingAnalysisbyClassofLoanandLeasePortfolioDetails" xlink:type="simple" xlink:href="boh-20260930.xsd#LoansandLeasesandtheAllowanceforCreditLossesScheduleofAgingAnalysisbyClassofLoanandLeasePortfolioDetails"/>
  <link:definitionLink xlink:role="http://www.boh.com/role/LoansandLeasesandtheAllowanceforCreditLossesScheduleofAgingAnalysisbyClassofLoanandLeasePortfolioDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableRecordedInvestmentPastDueLineItems_01a087ea-1b01-73fb-8b72-9dcd3b2f6fc2" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableRecordedInvestmentPastDueLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfFinancingReceivablesPastDueTable_01a087ea-1b01-7cb6-9799-945b14e9b1a8" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfFinancingReceivablesPastDueTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentPastDueLineItems_01a087ea-1b01-73fb-8b72-9dcd3b2f6fc2" xlink:to="loc_us-gaap_ScheduleOfFinancingReceivablesPastDueTable_01a087ea-1b01-7cb6-9799-945b14e9b1a8" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivablesPeriodPastDueAxis_01a087ea-1b01-7956-a144-fd63835bfafa" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivablesPeriodPastDueAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfFinancingReceivablesPastDueTable_01a087ea-1b01-7cb6-9799-945b14e9b1a8" xlink:to="loc_us-gaap_FinancingReceivablesPeriodPastDueAxis_01a087ea-1b01-7956-a144-fd63835bfafa" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivablesPeriodPastDueDomain_01a087ea-1b01-7956-a144-fd63835bfafa_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivablesPeriodPastDueDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FinancingReceivablesPeriodPastDueAxis_01a087ea-1b01-7956-a144-fd63835bfafa" xlink:to="loc_us-gaap_FinancingReceivablesPeriodPastDueDomain_01a087ea-1b01-7956-a144-fd63835bfafa_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivablesPeriodPastDueDomain_01a087ea-1b01-7ad9-ab12-c35793d2547a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivablesPeriodPastDueDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FinancingReceivablesPeriodPastDueAxis_01a087ea-1b01-7956-a144-fd63835bfafa" xlink:to="loc_us-gaap_FinancingReceivablesPeriodPastDueDomain_01a087ea-1b01-7ad9-ab12-c35793d2547a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivables30To59DaysPastDueMember_01a087ea-1b01-7e37-8d54-7a7bdce6ae29" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivables30To59DaysPastDueMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivablesPeriodPastDueDomain_01a087ea-1b01-7ad9-ab12-c35793d2547a" xlink:to="loc_us-gaap_FinancingReceivables30To59DaysPastDueMember_01a087ea-1b01-7e37-8d54-7a7bdce6ae29" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivables60To89DaysPastDueMember_01a087ea-1b01-7c01-86f1-a6d288babed3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivables60To89DaysPastDueMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivablesPeriodPastDueDomain_01a087ea-1b01-7ad9-ab12-c35793d2547a" xlink:to="loc_us-gaap_FinancingReceivables60To89DaysPastDueMember_01a087ea-1b01-7c01-86f1-a6d288babed3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivablesEqualToGreaterThan90DaysPastDueMember_01a087ea-1b01-713e-9d03-01ec74aea483" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivablesEqualToGreaterThan90DaysPastDueMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivablesPeriodPastDueDomain_01a087ea-1b01-7ad9-ab12-c35793d2547a" xlink:to="loc_us-gaap_FinancingReceivablesEqualToGreaterThan90DaysPastDueMember_01a087ea-1b01-713e-9d03-01ec74aea483" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancialAssetNotPastDueMember_01a087ea-1b01-7c2c-b55f-6f60dcccbcb8" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancialAssetNotPastDueMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivablesPeriodPastDueDomain_01a087ea-1b01-7ad9-ab12-c35793d2547a" xlink:to="loc_us-gaap_FinancialAssetNotPastDueMember_01a087ea-1b01-7c2c-b55f-6f60dcccbcb8" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivablePortfolioSegmentAxis_01a087ea-1b01-77cb-8f1f-aae2e6b426bb" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivablePortfolioSegmentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfFinancingReceivablesPastDueTable_01a087ea-1b01-7cb6-9799-945b14e9b1a8" xlink:to="loc_us-gaap_FinancingReceivablePortfolioSegmentAxis_01a087ea-1b01-77cb-8f1f-aae2e6b426bb" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_01a087ea-1b01-77cb-8f1f-aae2e6b426bb_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivablePortfolioSegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FinancingReceivablePortfolioSegmentAxis_01a087ea-1b01-77cb-8f1f-aae2e6b426bb" xlink:to="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_01a087ea-1b01-77cb-8f1f-aae2e6b426bb_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_01a087ea-1b01-746b-8d9d-701252fdc66a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivablePortfolioSegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FinancingReceivablePortfolioSegmentAxis_01a087ea-1b01-77cb-8f1f-aae2e6b426bb" xlink:to="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_01a087ea-1b01-746b-8d9d-701252fdc66a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommercialPortfolioSegmentMember_01a087ea-1b01-7da3-abb4-704a1e2cef78" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommercialPortfolioSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_01a087ea-1b01-746b-8d9d-701252fdc66a" xlink:to="loc_us-gaap_CommercialPortfolioSegmentMember_01a087ea-1b01-7da3-abb4-704a1e2cef78" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConsumerPortfolioSegmentMember_01a087ea-1b01-7bb4-b606-a332b16fe202" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ConsumerPortfolioSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_01a087ea-1b01-746b-8d9d-701252fdc66a" xlink:to="loc_us-gaap_ConsumerPortfolioSegmentMember_01a087ea-1b01-7bb4-b606-a332b16fe202" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis_01a087ea-1b01-7e89-9bcb-d7d935de614d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfFinancingReceivablesPastDueTable_01a087ea-1b01-7cb6-9799-945b14e9b1a8" xlink:to="loc_us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis_01a087ea-1b01-7e89-9bcb-d7d935de614d" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_01a087ea-1b01-7e89-9bcb-d7d935de614d_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis_01a087ea-1b01-7e89-9bcb-d7d935de614d" xlink:to="loc_us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_01a087ea-1b01-7e89-9bcb-d7d935de614d_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_01a087ea-1b01-7b01-aae0-84cff8df8ad8" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis_01a087ea-1b01-7e89-9bcb-d7d935de614d" xlink:to="loc_us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_01a087ea-1b01-7b01-aae0-84cff8df8ad8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommercialRealEstateMember_01a087ea-1b01-703c-afd7-97c031c05af2" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommercialRealEstateMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_01a087ea-1b01-7b01-aae0-84cff8df8ad8" xlink:to="loc_us-gaap_CommercialRealEstateMember_01a087ea-1b01-703c-afd7-97c031c05af2" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_boh_CommercialAndIndustrialMember_01a087ea-1b01-7710-88b0-8debf614fe1e" xlink:href="boh-20260930.xsd#boh_CommercialAndIndustrialMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_01a087ea-1b01-7b01-aae0-84cff8df8ad8" xlink:to="loc_boh_CommercialAndIndustrialMember_01a087ea-1b01-7710-88b0-8debf614fe1e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConstructionLoansMember_01a087ea-1b01-7e1e-ba2d-f4fcf977e137" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ConstructionLoansMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_01a087ea-1b01-7b01-aae0-84cff8df8ad8" xlink:to="loc_us-gaap_ConstructionLoansMember_01a087ea-1b01-7e1e-ba2d-f4fcf977e137" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_boh_LeaseFinancingMember_01a087ea-1b01-7425-9e51-57305a7026df" xlink:href="boh-20260930.xsd#boh_LeaseFinancingMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_01a087ea-1b01-7b01-aae0-84cff8df8ad8" xlink:to="loc_boh_LeaseFinancingMember_01a087ea-1b01-7425-9e51-57305a7026df" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ResidentialMortgageMember_01a087ea-1b01-7dab-b87d-691f91668a93" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ResidentialMortgageMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_01a087ea-1b01-7b01-aae0-84cff8df8ad8" xlink:to="loc_us-gaap_ResidentialMortgageMember_01a087ea-1b01-7dab-b87d-691f91668a93" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HomeEquityMember_01a087ea-1b01-7bb5-b580-9f22082a75b3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_HomeEquityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_01a087ea-1b01-7b01-aae0-84cff8df8ad8" xlink:to="loc_us-gaap_HomeEquityMember_01a087ea-1b01-7bb5-b580-9f22082a75b3" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AutomobileLoanMember_01a087ea-1b01-70e9-be2a-84b8785fb55b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AutomobileLoanMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_01a087ea-1b01-7b01-aae0-84cff8df8ad8" xlink:to="loc_us-gaap_AutomobileLoanMember_01a087ea-1b01-70e9-be2a-84b8785fb55b" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConsumerOtherMember_01a087ea-1b01-740e-ab67-8b30ed579535" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ConsumerOtherMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_01a087ea-1b01-7b01-aae0-84cff8df8ad8" xlink:to="loc_us-gaap_ConsumerOtherMember_01a087ea-1b01-740e-ab67-8b30ed579535" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss_01a087ea-1b01-71aa-90ea-9e197ade9d63" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentPastDueLineItems_01a087ea-1b01-73fb-8b72-9dcd3b2f6fc2" xlink:to="loc_us-gaap_FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss_01a087ea-1b01-71aa-90ea-9e197ade9d63" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableExcludingAccruedInterestNonaccrual_01a087ea-1b01-7afb-928f-807f902f6c9a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableExcludingAccruedInterestNonaccrual"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentPastDueLineItems_01a087ea-1b01-73fb-8b72-9dcd3b2f6fc2" xlink:to="loc_us-gaap_FinancingReceivableExcludingAccruedInterestNonaccrual_01a087ea-1b01-7afb-928f-807f902f6c9a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_boh_FinancingReceivableExcludingAccruedInterestRecordedInvestmentPastDueAndNonaccrualStatus_01a087ea-1b01-7d44-bab2-cd325009e849" xlink:href="boh-20260930.xsd#boh_FinancingReceivableExcludingAccruedInterestRecordedInvestmentPastDueAndNonaccrualStatus"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentPastDueLineItems_01a087ea-1b01-73fb-8b72-9dcd3b2f6fc2" xlink:to="loc_boh_FinancingReceivableExcludingAccruedInterestRecordedInvestmentPastDueAndNonaccrualStatus_01a087ea-1b01-7d44-bab2-cd325009e849" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_boh_FinancingReceivableExcludingAccruedInterestRecordedInvestmentNonaccrualStatusCurrent_01a087ea-1b01-764d-b237-82ac0aedb2e0" xlink:href="boh-20260930.xsd#boh_FinancingReceivableExcludingAccruedInterestRecordedInvestmentNonaccrualStatusCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentPastDueLineItems_01a087ea-1b01-73fb-8b72-9dcd3b2f6fc2" xlink:to="loc_boh_FinancingReceivableExcludingAccruedInterestRecordedInvestmentNonaccrualStatusCurrent_01a087ea-1b01-764d-b237-82ac0aedb2e0" xlink:type="arc" order="3"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.boh.com/role/LoansandLeasesandtheAllowanceforCreditLossesScheduleofNonAccrualLoansandLeasesDetails" xlink:type="simple" xlink:href="boh-20260930.xsd#LoansandLeasesandtheAllowanceforCreditLossesScheduleofNonAccrualLoansandLeasesDetails"/>
  <link:definitionLink xlink:role="http://www.boh.com/role/LoansandLeasesandtheAllowanceforCreditLossesScheduleofNonAccrualLoansandLeasesDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableNonaccrualStatusLineItems_01a087ea-1b01-7ec2-b99e-90aa44a1639e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableNonaccrualStatusLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableNonaccrualTable_01a087ea-1b01-78de-b2fb-df8c94fdf25b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableNonaccrualTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FinancingReceivableNonaccrualStatusLineItems_01a087ea-1b01-7ec2-b99e-90aa44a1639e" xlink:to="loc_us-gaap_FinancingReceivableNonaccrualTable_01a087ea-1b01-78de-b2fb-df8c94fdf25b" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivablePortfolioSegmentAxis_01a087ea-1b01-7eb3-bfc8-83268c77bb41" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivablePortfolioSegmentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FinancingReceivableNonaccrualTable_01a087ea-1b01-78de-b2fb-df8c94fdf25b" xlink:to="loc_us-gaap_FinancingReceivablePortfolioSegmentAxis_01a087ea-1b01-7eb3-bfc8-83268c77bb41" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_01a087ea-1b01-7eb3-bfc8-83268c77bb41_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivablePortfolioSegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FinancingReceivablePortfolioSegmentAxis_01a087ea-1b01-7eb3-bfc8-83268c77bb41" xlink:to="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_01a087ea-1b01-7eb3-bfc8-83268c77bb41_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_01a087ea-1b01-7883-845d-2bab06013a83" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivablePortfolioSegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FinancingReceivablePortfolioSegmentAxis_01a087ea-1b01-7eb3-bfc8-83268c77bb41" xlink:to="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_01a087ea-1b01-7883-845d-2bab06013a83" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommercialPortfolioSegmentMember_01a087ea-1b01-76fa-b44e-cf1dd33639a6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommercialPortfolioSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_01a087ea-1b01-7883-845d-2bab06013a83" xlink:to="loc_us-gaap_CommercialPortfolioSegmentMember_01a087ea-1b01-76fa-b44e-cf1dd33639a6" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConsumerPortfolioSegmentMember_01a087ea-1b01-762e-95ec-74f2627e5990" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ConsumerPortfolioSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_01a087ea-1b01-7883-845d-2bab06013a83" xlink:to="loc_us-gaap_ConsumerPortfolioSegmentMember_01a087ea-1b01-762e-95ec-74f2627e5990" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis_01a087ea-1b01-7bc2-8b3c-fe1c63cac1bc" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FinancingReceivableNonaccrualTable_01a087ea-1b01-78de-b2fb-df8c94fdf25b" xlink:to="loc_us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis_01a087ea-1b01-7bc2-8b3c-fe1c63cac1bc" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_01a087ea-1b01-7bc2-8b3c-fe1c63cac1bc_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis_01a087ea-1b01-7bc2-8b3c-fe1c63cac1bc" xlink:to="loc_us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_01a087ea-1b01-7bc2-8b3c-fe1c63cac1bc_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_01a087ea-1b01-7566-be9b-65020b9b4b7a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis_01a087ea-1b01-7bc2-8b3c-fe1c63cac1bc" xlink:to="loc_us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_01a087ea-1b01-7566-be9b-65020b9b4b7a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_boh_CommercialMortgageMember_01a087ea-1b01-70f2-97ab-0b983f06c488" xlink:href="boh-20260930.xsd#boh_CommercialMortgageMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_01a087ea-1b01-7566-be9b-65020b9b4b7a" xlink:to="loc_boh_CommercialMortgageMember_01a087ea-1b01-70f2-97ab-0b983f06c488" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_boh_CommercialAndIndustrialMember_01a087ea-1b01-7e0f-86c3-de077162c17d" xlink:href="boh-20260930.xsd#boh_CommercialAndIndustrialMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_01a087ea-1b01-7566-be9b-65020b9b4b7a" xlink:to="loc_boh_CommercialAndIndustrialMember_01a087ea-1b01-7e0f-86c3-de077162c17d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ResidentialMortgageMember_01a087ea-1b01-7080-81e3-99d7015a18d9" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ResidentialMortgageMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_01a087ea-1b01-7566-be9b-65020b9b4b7a" xlink:to="loc_us-gaap_ResidentialMortgageMember_01a087ea-1b01-7080-81e3-99d7015a18d9" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HomeEquityMember_01a087ea-1b01-73cb-9971-3acb2bd1aa92" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_HomeEquityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_01a087ea-1b01-7566-be9b-65020b9b4b7a" xlink:to="loc_us-gaap_HomeEquityMember_01a087ea-1b01-73cb-9971-3acb2bd1aa92" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_boh_FinancingReceivableExcludingAccruedInterestNonaccrualWithAllowance_01a087ea-1b01-7d64-b38b-ba8bd8370ccd" xlink:href="boh-20260930.xsd#boh_FinancingReceivableExcludingAccruedInterestNonaccrualWithAllowance"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableNonaccrualStatusLineItems_01a087ea-1b01-7ec2-b99e-90aa44a1639e" xlink:to="loc_boh_FinancingReceivableExcludingAccruedInterestNonaccrualWithAllowance_01a087ea-1b01-7d64-b38b-ba8bd8370ccd" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableExcludingAccruedInterestNonaccrualNoAllowance_01a087ea-1b01-749d-bd25-bb93b1d58836" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableExcludingAccruedInterestNonaccrualNoAllowance"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableNonaccrualStatusLineItems_01a087ea-1b01-7ec2-b99e-90aa44a1639e" xlink:to="loc_us-gaap_FinancingReceivableExcludingAccruedInterestNonaccrualNoAllowance_01a087ea-1b01-749d-bd25-bb93b1d58836" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableExcludingAccruedInterestNonaccrual_01a087ea-1b01-7dc5-8e25-c0dd6b561105" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableExcludingAccruedInterestNonaccrual"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableNonaccrualStatusLineItems_01a087ea-1b01-7ec2-b99e-90aa44a1639e" xlink:to="loc_us-gaap_FinancingReceivableExcludingAccruedInterestNonaccrual_01a087ea-1b01-7dc5-8e25-c0dd6b561105" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.boh.com/role/LoansandLeasesandtheAllowanceforCreditLossesScheduleofAmortizedCostBasisofLoanModificationstoBorrowersExperiencingFinancialDifficultyDetails" xlink:type="simple" xlink:href="boh-20260930.xsd#LoansandLeasesandtheAllowanceforCreditLossesScheduleofAmortizedCostBasisofLoanModificationstoBorrowersExperiencingFinancialDifficultyDetails"/>
  <link:definitionLink xlink:role="http://www.boh.com/role/LoansandLeasesandtheAllowanceforCreditLossesScheduleofAmortizedCostBasisofLoanModificationstoBorrowersExperiencingFinancialDifficultyDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableModificationsLineItems_01a087ea-1b01-734d-bed6-c67b4782757a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableModificationsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfFinancingReceivableTroubledDebtRestructuringsTable_01a087ea-1b01-7e5e-a9ff-7a7982502507" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfFinancingReceivableTroubledDebtRestructuringsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FinancingReceivableModificationsLineItems_01a087ea-1b01-734d-bed6-c67b4782757a" xlink:to="loc_us-gaap_ScheduleOfFinancingReceivableTroubledDebtRestructuringsTable_01a087ea-1b01-7e5e-a9ff-7a7982502507" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivablePortfolioSegmentAxis_01a087ea-1b01-7b76-ad63-7f6ad31d860e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivablePortfolioSegmentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfFinancingReceivableTroubledDebtRestructuringsTable_01a087ea-1b01-7e5e-a9ff-7a7982502507" xlink:to="loc_us-gaap_FinancingReceivablePortfolioSegmentAxis_01a087ea-1b01-7b76-ad63-7f6ad31d860e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_01a087ea-1b01-7b76-ad63-7f6ad31d860e_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivablePortfolioSegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FinancingReceivablePortfolioSegmentAxis_01a087ea-1b01-7b76-ad63-7f6ad31d860e" xlink:to="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_01a087ea-1b01-7b76-ad63-7f6ad31d860e_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_01a087ea-1b01-75ff-8c68-a2a04027fe88" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivablePortfolioSegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FinancingReceivablePortfolioSegmentAxis_01a087ea-1b01-7b76-ad63-7f6ad31d860e" xlink:to="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_01a087ea-1b01-75ff-8c68-a2a04027fe88" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommercialPortfolioSegmentMember_01a087ea-1b01-7c8b-a3d2-609dc8c9b4fe" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommercialPortfolioSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_01a087ea-1b01-75ff-8c68-a2a04027fe88" xlink:to="loc_us-gaap_CommercialPortfolioSegmentMember_01a087ea-1b01-7c8b-a3d2-609dc8c9b4fe" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConsumerPortfolioSegmentMember_01a087ea-1b01-7399-9f57-257336340474" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ConsumerPortfolioSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_01a087ea-1b01-75ff-8c68-a2a04027fe88" xlink:to="loc_us-gaap_ConsumerPortfolioSegmentMember_01a087ea-1b01-7399-9f57-257336340474" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis_01a087ea-1b01-7705-bc4d-eb2e74fb4770" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfFinancingReceivableTroubledDebtRestructuringsTable_01a087ea-1b01-7e5e-a9ff-7a7982502507" xlink:to="loc_us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis_01a087ea-1b01-7705-bc4d-eb2e74fb4770" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_01a087ea-1b01-7705-bc4d-eb2e74fb4770_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis_01a087ea-1b01-7705-bc4d-eb2e74fb4770" xlink:to="loc_us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_01a087ea-1b01-7705-bc4d-eb2e74fb4770_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_01a087ea-1b01-70df-b1c0-a52e0803c0d8" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis_01a087ea-1b01-7705-bc4d-eb2e74fb4770" xlink:to="loc_us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_01a087ea-1b01-70df-b1c0-a52e0803c0d8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommercialRealEstateMember_01a087ea-1b01-748c-84ed-d8847a157b70" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommercialRealEstateMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_01a087ea-1b01-70df-b1c0-a52e0803c0d8" xlink:to="loc_us-gaap_CommercialRealEstateMember_01a087ea-1b01-748c-84ed-d8847a157b70" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_boh_CommercialAndIndustrialMember_01a087ea-1b01-7433-9e55-edfd91b83374" xlink:href="boh-20260930.xsd#boh_CommercialAndIndustrialMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_01a087ea-1b01-70df-b1c0-a52e0803c0d8" xlink:to="loc_boh_CommercialAndIndustrialMember_01a087ea-1b01-7433-9e55-edfd91b83374" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ResidentialMortgageMember_01a087ea-1b01-7d55-aa51-7f5307dca8e7" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ResidentialMortgageMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_01a087ea-1b01-70df-b1c0-a52e0803c0d8" xlink:to="loc_us-gaap_ResidentialMortgageMember_01a087ea-1b01-7d55-aa51-7f5307dca8e7" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HomeEquityMember_01a087ea-1b01-7ae2-96b8-e78275eb6ba8" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_HomeEquityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_01a087ea-1b01-70df-b1c0-a52e0803c0d8" xlink:to="loc_us-gaap_HomeEquityMember_01a087ea-1b01-7ae2-96b8-e78275eb6ba8" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AutomobileLoanMember_01a087ea-1b01-74cf-8eea-dc41450f9ce6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AutomobileLoanMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_01a087ea-1b01-70df-b1c0-a52e0803c0d8" xlink:to="loc_us-gaap_AutomobileLoanMember_01a087ea-1b01-74cf-8eea-dc41450f9ce6" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConsumerOtherMember_01a087ea-1b01-7973-9915-fb0117ce52b1" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ConsumerOtherMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_01a087ea-1b01-70df-b1c0-a52e0803c0d8" xlink:to="loc_us-gaap_ConsumerOtherMember_01a087ea-1b01-7973-9915-fb0117ce52b1" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LoanRestructuringModificationAxis_01a087ea-1b01-7fb3-a686-50b496ddf2b6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LoanRestructuringModificationAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfFinancingReceivableTroubledDebtRestructuringsTable_01a087ea-1b01-7e5e-a9ff-7a7982502507" xlink:to="loc_us-gaap_LoanRestructuringModificationAxis_01a087ea-1b01-7fb3-a686-50b496ddf2b6" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LoanRestructuringModificationDomain_01a087ea-1b01-7fb3-a686-50b496ddf2b6_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LoanRestructuringModificationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LoanRestructuringModificationAxis_01a087ea-1b01-7fb3-a686-50b496ddf2b6" xlink:to="loc_us-gaap_LoanRestructuringModificationDomain_01a087ea-1b01-7fb3-a686-50b496ddf2b6_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LoanRestructuringModificationDomain_01a087ea-1b01-7f59-bd27-53229fbcc7e2" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LoanRestructuringModificationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LoanRestructuringModificationAxis_01a087ea-1b01-7fb3-a686-50b496ddf2b6" xlink:to="loc_us-gaap_LoanRestructuringModificationDomain_01a087ea-1b01-7f59-bd27-53229fbcc7e2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ExtendedMaturityMember_01a087ea-1b01-7290-876e-b4a96372a323" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ExtendedMaturityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LoanRestructuringModificationDomain_01a087ea-1b01-7f59-bd27-53229fbcc7e2" xlink:to="loc_us-gaap_ExtendedMaturityMember_01a087ea-1b01-7290-876e-b4a96372a323" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_boh_PaymentDelayAndTermExtensionMember_01a087ea-1b01-7d8f-b31d-b5a759fff344" xlink:href="boh-20260930.xsd#boh_PaymentDelayAndTermExtensionMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LoanRestructuringModificationDomain_01a087ea-1b01-7f59-bd27-53229fbcc7e2" xlink:to="loc_boh_PaymentDelayAndTermExtensionMember_01a087ea-1b01-7d8f-b31d-b5a759fff344" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ExtendedMaturityAndInterestRateReductionMember_01a087ea-1b01-73ce-a200-9dfed9a7dc52" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ExtendedMaturityAndInterestRateReductionMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LoanRestructuringModificationDomain_01a087ea-1b01-7f59-bd27-53229fbcc7e2" xlink:to="loc_us-gaap_ExtendedMaturityAndInterestRateReductionMember_01a087ea-1b01-73ce-a200-9dfed9a7dc52" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_boh_InterestRateBelowMarketReductionPaymentDeferralExtendedMaturityMember_01a087ea-1b01-719e-bed8-9f0fd84068f7" xlink:href="boh-20260930.xsd#boh_InterestRateBelowMarketReductionPaymentDeferralExtendedMaturityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LoanRestructuringModificationDomain_01a087ea-1b01-7f59-bd27-53229fbcc7e2" xlink:to="loc_boh_InterestRateBelowMarketReductionPaymentDeferralExtendedMaturityMember_01a087ea-1b01-719e-bed8-9f0fd84068f7" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentDeferralMember_01a087ea-1b01-7cd8-aa9f-14943b99209f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PaymentDeferralMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LoanRestructuringModificationDomain_01a087ea-1b01-7f59-bd27-53229fbcc7e2" xlink:to="loc_us-gaap_PaymentDeferralMember_01a087ea-1b01-7cd8-aa9f-14943b99209f" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableExcludingAccruedInterestModifiedPeriod_01a087ea-1b01-732e-b8b8-573099325d35" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableExcludingAccruedInterestModifiedPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableModificationsLineItems_01a087ea-1b01-734d-bed6-c67b4782757a" xlink:to="loc_us-gaap_FinancingReceivableExcludingAccruedInterestModifiedPeriod_01a087ea-1b01-732e-b8b8-573099325d35" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_boh_FinanceReceivableExcludingAccruedInterestPercentageOfClassOfLoansAndLeases_01a087ea-1b01-7cb5-ad40-11ae5f36b71d" xlink:href="boh-20260930.xsd#boh_FinanceReceivableExcludingAccruedInterestPercentageOfClassOfLoansAndLeases"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableModificationsLineItems_01a087ea-1b01-734d-bed6-c67b4782757a" xlink:to="loc_boh_FinanceReceivableExcludingAccruedInterestPercentageOfClassOfLoansAndLeases_01a087ea-1b01-7cb5-ad40-11ae5f36b71d" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.boh.com/role/LoansandLeasesandtheAllowanceforCreditLossesScheduleofFinancialEffectofLoanModificationstoBorrowersExperiencingFinancialDifficultyDetails" xlink:type="simple" xlink:href="boh-20260930.xsd#LoansandLeasesandtheAllowanceforCreditLossesScheduleofFinancialEffectofLoanModificationstoBorrowersExperiencingFinancialDifficultyDetails"/>
  <link:definitionLink xlink:role="http://www.boh.com/role/LoansandLeasesandtheAllowanceforCreditLossesScheduleofFinancialEffectofLoanModificationstoBorrowersExperiencingFinancialDifficultyDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableModificationsLineItems_01a087ea-1b01-7827-afb2-cf81ab5c5197" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableModificationsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfFinancingReceivableTroubledDebtRestructuringsTable_01a087ea-1b01-7dba-be0c-230f59a1277d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfFinancingReceivableTroubledDebtRestructuringsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FinancingReceivableModificationsLineItems_01a087ea-1b01-7827-afb2-cf81ab5c5197" xlink:to="loc_us-gaap_ScheduleOfFinancingReceivableTroubledDebtRestructuringsTable_01a087ea-1b01-7dba-be0c-230f59a1277d" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivablePortfolioSegmentAxis_01a087ea-1b01-7f9d-ba30-9e1e07b8d541" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivablePortfolioSegmentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfFinancingReceivableTroubledDebtRestructuringsTable_01a087ea-1b01-7dba-be0c-230f59a1277d" xlink:to="loc_us-gaap_FinancingReceivablePortfolioSegmentAxis_01a087ea-1b01-7f9d-ba30-9e1e07b8d541" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_01a087ea-1b01-7f9d-ba30-9e1e07b8d541_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivablePortfolioSegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FinancingReceivablePortfolioSegmentAxis_01a087ea-1b01-7f9d-ba30-9e1e07b8d541" xlink:to="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_01a087ea-1b01-7f9d-ba30-9e1e07b8d541_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_01a087ea-1b01-754c-b25b-95eb3a9b54bc" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivablePortfolioSegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FinancingReceivablePortfolioSegmentAxis_01a087ea-1b01-7f9d-ba30-9e1e07b8d541" xlink:to="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_01a087ea-1b01-754c-b25b-95eb3a9b54bc" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommercialPortfolioSegmentMember_01a087ea-1b01-7258-8ab9-6f342bc45fbf" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommercialPortfolioSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_01a087ea-1b01-754c-b25b-95eb3a9b54bc" xlink:to="loc_us-gaap_CommercialPortfolioSegmentMember_01a087ea-1b01-7258-8ab9-6f342bc45fbf" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConsumerPortfolioSegmentMember_01a087ea-1b01-734e-8b78-cde2ce5529ca" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ConsumerPortfolioSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_01a087ea-1b01-754c-b25b-95eb3a9b54bc" xlink:to="loc_us-gaap_ConsumerPortfolioSegmentMember_01a087ea-1b01-734e-8b78-cde2ce5529ca" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis_01a087ea-1b01-7376-a3ce-62f1e62f0700" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfFinancingReceivableTroubledDebtRestructuringsTable_01a087ea-1b01-7dba-be0c-230f59a1277d" xlink:to="loc_us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis_01a087ea-1b01-7376-a3ce-62f1e62f0700" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_01a087ea-1b01-7376-a3ce-62f1e62f0700_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis_01a087ea-1b01-7376-a3ce-62f1e62f0700" xlink:to="loc_us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_01a087ea-1b01-7376-a3ce-62f1e62f0700_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_01a087ea-1b01-747c-a04c-674289868af3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis_01a087ea-1b01-7376-a3ce-62f1e62f0700" xlink:to="loc_us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_01a087ea-1b01-747c-a04c-674289868af3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_boh_CommercialAndIndustrialMember_01a087ea-1b01-76ed-9c1e-e1875aced019" xlink:href="boh-20260930.xsd#boh_CommercialAndIndustrialMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_01a087ea-1b01-747c-a04c-674289868af3" xlink:to="loc_boh_CommercialAndIndustrialMember_01a087ea-1b01-76ed-9c1e-e1875aced019" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_boh_CommercialMortgageMember_01a087ea-1b01-70f1-8a0d-9f4395c09d0a" xlink:href="boh-20260930.xsd#boh_CommercialMortgageMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_01a087ea-1b01-747c-a04c-674289868af3" xlink:to="loc_boh_CommercialMortgageMember_01a087ea-1b01-70f1-8a0d-9f4395c09d0a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ResidentialMortgageMember_01a087ea-1b01-7df2-b336-d80514aebc71" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ResidentialMortgageMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_01a087ea-1b01-747c-a04c-674289868af3" xlink:to="loc_us-gaap_ResidentialMortgageMember_01a087ea-1b01-7df2-b336-d80514aebc71" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HomeEquityMember_01a087ea-1b01-7fc3-9e18-3c7f096e6faf" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_HomeEquityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_01a087ea-1b01-747c-a04c-674289868af3" xlink:to="loc_us-gaap_HomeEquityMember_01a087ea-1b01-7fc3-9e18-3c7f096e6faf" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AutomobileLoanMember_01a087ea-1b01-7ee6-a429-642e8c5a7bf8" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AutomobileLoanMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_01a087ea-1b01-747c-a04c-674289868af3" xlink:to="loc_us-gaap_AutomobileLoanMember_01a087ea-1b01-7ee6-a429-642e8c5a7bf8" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConsumerOtherMember_01a087ea-1b01-7651-a396-f2bf8a5b759c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ConsumerOtherMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_01a087ea-1b01-747c-a04c-674289868af3" xlink:to="loc_us-gaap_ConsumerOtherMember_01a087ea-1b01-7651-a396-f2bf8a5b759c" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LoanRestructuringModificationAxis_01a087ea-1b01-7df0-9064-c493a38235a8" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LoanRestructuringModificationAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfFinancingReceivableTroubledDebtRestructuringsTable_01a087ea-1b01-7dba-be0c-230f59a1277d" xlink:to="loc_us-gaap_LoanRestructuringModificationAxis_01a087ea-1b01-7df0-9064-c493a38235a8" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LoanRestructuringModificationDomain_01a087ea-1b01-7df0-9064-c493a38235a8_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LoanRestructuringModificationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LoanRestructuringModificationAxis_01a087ea-1b01-7df0-9064-c493a38235a8" xlink:to="loc_us-gaap_LoanRestructuringModificationDomain_01a087ea-1b01-7df0-9064-c493a38235a8_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LoanRestructuringModificationDomain_01a087ea-1b01-7c5d-a3d5-7c5cba56af9d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LoanRestructuringModificationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LoanRestructuringModificationAxis_01a087ea-1b01-7df0-9064-c493a38235a8" xlink:to="loc_us-gaap_LoanRestructuringModificationDomain_01a087ea-1b01-7c5d-a3d5-7c5cba56af9d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ExtendedMaturityMember_01a087ea-1b01-74df-ba62-772f580b153d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ExtendedMaturityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LoanRestructuringModificationDomain_01a087ea-1b01-7c5d-a3d5-7c5cba56af9d" xlink:to="loc_us-gaap_ExtendedMaturityMember_01a087ea-1b01-74df-ba62-772f580b153d" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentDeferralMember_01a087ea-1b01-7343-99f4-40facb1309d3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PaymentDeferralMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LoanRestructuringModificationDomain_01a087ea-1b01-7c5d-a3d5-7c5cba56af9d" xlink:to="loc_us-gaap_PaymentDeferralMember_01a087ea-1b01-7343-99f4-40facb1309d3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractualInterestRateReductionMember_01a087ea-1b01-710f-8cff-52263d169834" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ContractualInterestRateReductionMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LoanRestructuringModificationDomain_01a087ea-1b01-7c5d-a3d5-7c5cba56af9d" xlink:to="loc_us-gaap_ContractualInterestRateReductionMember_01a087ea-1b01-710f-8cff-52263d169834" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableModifiedWeightedAverageTermIncreaseFromModification_01a087ea-1b01-73ae-a554-caf56254ce66" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableModifiedWeightedAverageTermIncreaseFromModification"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableModificationsLineItems_01a087ea-1b01-7827-afb2-cf81ab5c5197" xlink:to="loc_us-gaap_FinancingReceivableModifiedWeightedAverageTermIncreaseFromModification_01a087ea-1b01-73ae-a554-caf56254ce66" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_boh_FinancingReceivableModifiedWeightedAveragePaymentDeferral_01a087ea-1b01-77fd-909f-c4f946753740" xlink:href="boh-20260930.xsd#boh_FinancingReceivableModifiedWeightedAveragePaymentDeferral"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableModificationsLineItems_01a087ea-1b01-7827-afb2-cf81ab5c5197" xlink:to="loc_boh_FinancingReceivableModifiedWeightedAveragePaymentDeferral_01a087ea-1b01-77fd-909f-c4f946753740" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableModifiedWeightedAverageInterestRateDecreaseFromModification_01a087ea-1b01-7f50-9189-e609fa94f8f8" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableModifiedWeightedAverageInterestRateDecreaseFromModification"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableModificationsLineItems_01a087ea-1b01-7827-afb2-cf81ab5c5197" xlink:to="loc_us-gaap_FinancingReceivableModifiedWeightedAverageInterestRateDecreaseFromModification_01a087ea-1b01-7f50-9189-e609fa94f8f8" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.boh.com/role/LoansandLeasesandtheAllowanceforCreditLossesScheduleofFinancialEffectofLoanModificationstoBorrowersExperiencingFinancialDifficultythatSubsequentlyDefaultedDetails" xlink:type="simple" xlink:href="boh-20260930.xsd#LoansandLeasesandtheAllowanceforCreditLossesScheduleofFinancialEffectofLoanModificationstoBorrowersExperiencingFinancialDifficultythatSubsequentlyDefaultedDetails"/>
  <link:definitionLink xlink:role="http://www.boh.com/role/LoansandLeasesandtheAllowanceforCreditLossesScheduleofFinancialEffectofLoanModificationstoBorrowersExperiencingFinancialDifficultythatSubsequentlyDefaultedDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableModificationsLineItems_01a087ea-1b01-74e5-8e05-9698f499fb1a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableModificationsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfFinancingReceivableTroubledDebtRestructuringsTable_01a087ea-1b01-76d7-9938-2ae2beb9ce19" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfFinancingReceivableTroubledDebtRestructuringsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FinancingReceivableModificationsLineItems_01a087ea-1b01-74e5-8e05-9698f499fb1a" xlink:to="loc_us-gaap_ScheduleOfFinancingReceivableTroubledDebtRestructuringsTable_01a087ea-1b01-76d7-9938-2ae2beb9ce19" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivablePortfolioSegmentAxis_01a087ea-1b01-7bf3-b267-a45a528c9a89" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivablePortfolioSegmentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfFinancingReceivableTroubledDebtRestructuringsTable_01a087ea-1b01-76d7-9938-2ae2beb9ce19" xlink:to="loc_us-gaap_FinancingReceivablePortfolioSegmentAxis_01a087ea-1b01-7bf3-b267-a45a528c9a89" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_01a087ea-1b01-7bf3-b267-a45a528c9a89_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivablePortfolioSegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FinancingReceivablePortfolioSegmentAxis_01a087ea-1b01-7bf3-b267-a45a528c9a89" xlink:to="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_01a087ea-1b01-7bf3-b267-a45a528c9a89_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_01a087ea-1b01-7110-abf5-1bbfe15ebe04" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivablePortfolioSegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FinancingReceivablePortfolioSegmentAxis_01a087ea-1b01-7bf3-b267-a45a528c9a89" xlink:to="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_01a087ea-1b01-7110-abf5-1bbfe15ebe04" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommercialPortfolioSegmentMember_01a087ea-1b01-7abc-b125-e7490ab3eb78" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommercialPortfolioSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_01a087ea-1b01-7110-abf5-1bbfe15ebe04" xlink:to="loc_us-gaap_CommercialPortfolioSegmentMember_01a087ea-1b01-7abc-b125-e7490ab3eb78" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConsumerPortfolioSegmentMember_01a087ea-1b01-7cc4-ac37-1dcb020dcd34" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ConsumerPortfolioSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_01a087ea-1b01-7110-abf5-1bbfe15ebe04" xlink:to="loc_us-gaap_ConsumerPortfolioSegmentMember_01a087ea-1b01-7cc4-ac37-1dcb020dcd34" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis_01a087ea-1b01-7454-849e-422033d266b3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfFinancingReceivableTroubledDebtRestructuringsTable_01a087ea-1b01-76d7-9938-2ae2beb9ce19" xlink:to="loc_us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis_01a087ea-1b01-7454-849e-422033d266b3" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_01a087ea-1b01-7454-849e-422033d266b3_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis_01a087ea-1b01-7454-849e-422033d266b3" xlink:to="loc_us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_01a087ea-1b01-7454-849e-422033d266b3_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_01a087ea-1b01-7fb7-ab46-84e4ce992ff7" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis_01a087ea-1b01-7454-849e-422033d266b3" xlink:to="loc_us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_01a087ea-1b01-7fb7-ab46-84e4ce992ff7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_boh_CommercialAndIndustrialMember_01a087ea-1b01-7b13-bd28-144528a5c55e" xlink:href="boh-20260930.xsd#boh_CommercialAndIndustrialMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_01a087ea-1b01-7fb7-ab46-84e4ce992ff7" xlink:to="loc_boh_CommercialAndIndustrialMember_01a087ea-1b01-7b13-bd28-144528a5c55e" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ResidentialMortgageMember_01a087ea-1b01-76b6-864a-e19bc9c3aa86" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ResidentialMortgageMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_01a087ea-1b01-7fb7-ab46-84e4ce992ff7" xlink:to="loc_us-gaap_ResidentialMortgageMember_01a087ea-1b01-76b6-864a-e19bc9c3aa86" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AutomobileLoanMember_01a087ea-1b01-7728-8eb5-bf31fab6c59f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AutomobileLoanMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_01a087ea-1b01-7fb7-ab46-84e4ce992ff7" xlink:to="loc_us-gaap_AutomobileLoanMember_01a087ea-1b01-7728-8eb5-bf31fab6c59f" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConsumerOtherMember_01a087ea-1b01-7baf-85d1-b2b71b44c0e1" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ConsumerOtherMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_01a087ea-1b01-7fb7-ab46-84e4ce992ff7" xlink:to="loc_us-gaap_ConsumerOtherMember_01a087ea-1b01-7baf-85d1-b2b71b44c0e1" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LoanRestructuringModificationAxis_01a087ea-1b01-7a2d-993b-44aebf8c807f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LoanRestructuringModificationAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfFinancingReceivableTroubledDebtRestructuringsTable_01a087ea-1b01-76d7-9938-2ae2beb9ce19" xlink:to="loc_us-gaap_LoanRestructuringModificationAxis_01a087ea-1b01-7a2d-993b-44aebf8c807f" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LoanRestructuringModificationDomain_01a087ea-1b01-7a2d-993b-44aebf8c807f_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LoanRestructuringModificationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LoanRestructuringModificationAxis_01a087ea-1b01-7a2d-993b-44aebf8c807f" xlink:to="loc_us-gaap_LoanRestructuringModificationDomain_01a087ea-1b01-7a2d-993b-44aebf8c807f_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LoanRestructuringModificationDomain_01a087ea-1b01-76d2-bc30-c17a7ff63f33" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LoanRestructuringModificationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LoanRestructuringModificationAxis_01a087ea-1b01-7a2d-993b-44aebf8c807f" xlink:to="loc_us-gaap_LoanRestructuringModificationDomain_01a087ea-1b01-76d2-bc30-c17a7ff63f33" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ExtendedMaturityMember_01a087ea-1b01-716d-8e03-ce6c4187a14c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ExtendedMaturityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LoanRestructuringModificationDomain_01a087ea-1b01-76d2-bc30-c17a7ff63f33" xlink:to="loc_us-gaap_ExtendedMaturityMember_01a087ea-1b01-716d-8e03-ce6c4187a14c" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_boh_PaymentDelayAndTermExtensionMember_01a087ea-1b01-7133-b108-7c9c0746871a" xlink:href="boh-20260930.xsd#boh_PaymentDelayAndTermExtensionMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LoanRestructuringModificationDomain_01a087ea-1b01-76d2-bc30-c17a7ff63f33" xlink:to="loc_boh_PaymentDelayAndTermExtensionMember_01a087ea-1b01-7133-b108-7c9c0746871a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ExtendedMaturityAndInterestRateReductionMember_01a087ea-1b01-789a-9919-31b80bcee05f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ExtendedMaturityAndInterestRateReductionMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LoanRestructuringModificationDomain_01a087ea-1b01-76d2-bc30-c17a7ff63f33" xlink:to="loc_us-gaap_ExtendedMaturityAndInterestRateReductionMember_01a087ea-1b01-789a-9919-31b80bcee05f" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_boh_RateReductionPaymentDelayAndTermExtensionMember_01a0d0d4-5238-7353-8ce2-1bdb8d514c22" xlink:href="boh-20260930.xsd#boh_RateReductionPaymentDelayAndTermExtensionMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LoanRestructuringModificationDomain_01a087ea-1b01-76d2-bc30-c17a7ff63f33" xlink:to="loc_boh_RateReductionPaymentDelayAndTermExtensionMember_01a0d0d4-5238-7353-8ce2-1bdb8d514c22" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableExcludingAccruedInterestModifiedSubsequentDefault_01a087ea-1b01-7c08-8bb5-abb20b2faca4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableExcludingAccruedInterestModifiedSubsequentDefault"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableModificationsLineItems_01a087ea-1b01-74e5-8e05-9698f499fb1a" xlink:to="loc_us-gaap_FinancingReceivableExcludingAccruedInterestModifiedSubsequentDefault_01a087ea-1b01-7c08-8bb5-abb20b2faca4" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.boh.com/role/LoansandLeasesandtheAllowanceforCreditLossesScheduleofAgingAnalysisofLoanModificationsMadetoBorrowersExperiencingFinancialDifficultyDetails" xlink:type="simple" xlink:href="boh-20260930.xsd#LoansandLeasesandtheAllowanceforCreditLossesScheduleofAgingAnalysisofLoanModificationsMadetoBorrowersExperiencingFinancialDifficultyDetails"/>
  <link:definitionLink xlink:role="http://www.boh.com/role/LoansandLeasesandtheAllowanceforCreditLossesScheduleofAgingAnalysisofLoanModificationsMadetoBorrowersExperiencingFinancialDifficultyDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableModificationsLineItems_01a087ea-1b01-7216-8235-3ee50820ac68" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableModificationsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfFinancingReceivableTroubledDebtRestructuringsTable_01a087ea-1b01-744a-923b-fa7199312b0e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfFinancingReceivableTroubledDebtRestructuringsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FinancingReceivableModificationsLineItems_01a087ea-1b01-7216-8235-3ee50820ac68" xlink:to="loc_us-gaap_ScheduleOfFinancingReceivableTroubledDebtRestructuringsTable_01a087ea-1b01-744a-923b-fa7199312b0e" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivablePortfolioSegmentAxis_01a087ea-1b01-798a-b2c3-bd1da4f2acd3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivablePortfolioSegmentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfFinancingReceivableTroubledDebtRestructuringsTable_01a087ea-1b01-744a-923b-fa7199312b0e" xlink:to="loc_us-gaap_FinancingReceivablePortfolioSegmentAxis_01a087ea-1b01-798a-b2c3-bd1da4f2acd3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_01a087ea-1b01-798a-b2c3-bd1da4f2acd3_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivablePortfolioSegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FinancingReceivablePortfolioSegmentAxis_01a087ea-1b01-798a-b2c3-bd1da4f2acd3" xlink:to="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_01a087ea-1b01-798a-b2c3-bd1da4f2acd3_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_01a087ea-1b01-788f-8abb-4cc1e60c7ca4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivablePortfolioSegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FinancingReceivablePortfolioSegmentAxis_01a087ea-1b01-798a-b2c3-bd1da4f2acd3" xlink:to="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_01a087ea-1b01-788f-8abb-4cc1e60c7ca4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommercialPortfolioSegmentMember_01a087ea-1b01-78ce-a6f8-5bbbbf41868c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommercialPortfolioSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_01a087ea-1b01-788f-8abb-4cc1e60c7ca4" xlink:to="loc_us-gaap_CommercialPortfolioSegmentMember_01a087ea-1b01-78ce-a6f8-5bbbbf41868c" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConsumerPortfolioSegmentMember_01a087ea-1b01-7ee8-bf92-8fb197fc3e5f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ConsumerPortfolioSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_01a087ea-1b01-788f-8abb-4cc1e60c7ca4" xlink:to="loc_us-gaap_ConsumerPortfolioSegmentMember_01a087ea-1b01-7ee8-bf92-8fb197fc3e5f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis_01a087ea-1b01-7795-8c86-da70ca199ab3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfFinancingReceivableTroubledDebtRestructuringsTable_01a087ea-1b01-744a-923b-fa7199312b0e" xlink:to="loc_us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis_01a087ea-1b01-7795-8c86-da70ca199ab3" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_01a087ea-1b01-7795-8c86-da70ca199ab3_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis_01a087ea-1b01-7795-8c86-da70ca199ab3" xlink:to="loc_us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_01a087ea-1b01-7795-8c86-da70ca199ab3_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_01a087ea-1b01-70bd-aff6-dd9541fe5065" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis_01a087ea-1b01-7795-8c86-da70ca199ab3" xlink:to="loc_us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_01a087ea-1b01-70bd-aff6-dd9541fe5065" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommercialRealEstateMember_01a087ea-1b01-79bf-a9fa-23d5cdd47c53" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommercialRealEstateMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_01a087ea-1b01-70bd-aff6-dd9541fe5065" xlink:to="loc_us-gaap_CommercialRealEstateMember_01a087ea-1b01-79bf-a9fa-23d5cdd47c53" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_boh_CommercialAndIndustrialMember_01a087ea-1b01-7fce-ae5c-9cd0092c0427" xlink:href="boh-20260930.xsd#boh_CommercialAndIndustrialMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_01a087ea-1b01-70bd-aff6-dd9541fe5065" xlink:to="loc_boh_CommercialAndIndustrialMember_01a087ea-1b01-7fce-ae5c-9cd0092c0427" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConstructionLoansMember_01a087ea-1b01-7e35-80a2-ffefb3e3919d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ConstructionLoansMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_01a087ea-1b01-70bd-aff6-dd9541fe5065" xlink:to="loc_us-gaap_ConstructionLoansMember_01a087ea-1b01-7e35-80a2-ffefb3e3919d" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ResidentialMortgageMember_01a087ea-1b01-7e9b-837b-7f3a02164a84" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ResidentialMortgageMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_01a087ea-1b01-70bd-aff6-dd9541fe5065" xlink:to="loc_us-gaap_ResidentialMortgageMember_01a087ea-1b01-7e9b-837b-7f3a02164a84" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HomeEquityMember_01a087ea-1b01-78d9-a658-6c818a5ba29b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_HomeEquityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_01a087ea-1b01-70bd-aff6-dd9541fe5065" xlink:to="loc_us-gaap_HomeEquityMember_01a087ea-1b01-78d9-a658-6c818a5ba29b" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AutomobileLoanMember_01a087ea-1b01-7e88-8881-19fef385a8b5" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AutomobileLoanMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_01a087ea-1b01-70bd-aff6-dd9541fe5065" xlink:to="loc_us-gaap_AutomobileLoanMember_01a087ea-1b01-7e88-8881-19fef385a8b5" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConsumerOtherMember_01a087ea-1b01-7bf7-9f2d-1767a5af9759" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ConsumerOtherMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_01a087ea-1b01-70bd-aff6-dd9541fe5065" xlink:to="loc_us-gaap_ConsumerOtherMember_01a087ea-1b01-7bf7-9f2d-1767a5af9759" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivablesPeriodPastDueAxis_01a087ea-1b01-7146-b8d9-9e9524bfc75d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivablesPeriodPastDueAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfFinancingReceivableTroubledDebtRestructuringsTable_01a087ea-1b01-744a-923b-fa7199312b0e" xlink:to="loc_us-gaap_FinancingReceivablesPeriodPastDueAxis_01a087ea-1b01-7146-b8d9-9e9524bfc75d" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivablesPeriodPastDueDomain_01a087ea-1b01-7146-b8d9-9e9524bfc75d_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivablesPeriodPastDueDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FinancingReceivablesPeriodPastDueAxis_01a087ea-1b01-7146-b8d9-9e9524bfc75d" xlink:to="loc_us-gaap_FinancingReceivablesPeriodPastDueDomain_01a087ea-1b01-7146-b8d9-9e9524bfc75d_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivablesPeriodPastDueDomain_01a087ea-1b01-7eb4-bee5-91fb541860da" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivablesPeriodPastDueDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FinancingReceivablesPeriodPastDueAxis_01a087ea-1b01-7146-b8d9-9e9524bfc75d" xlink:to="loc_us-gaap_FinancingReceivablesPeriodPastDueDomain_01a087ea-1b01-7eb4-bee5-91fb541860da" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancialAssetNotPastDueMember_01a087ea-1b01-78b7-9c57-d70714a224fa" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancialAssetNotPastDueMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivablesPeriodPastDueDomain_01a087ea-1b01-7eb4-bee5-91fb541860da" xlink:to="loc_us-gaap_FinancialAssetNotPastDueMember_01a087ea-1b01-78b7-9c57-d70714a224fa" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivables30To59DaysPastDueMember_01a087ea-1b01-7474-b827-f532d247b6d1" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivables30To59DaysPastDueMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivablesPeriodPastDueDomain_01a087ea-1b01-7eb4-bee5-91fb541860da" xlink:to="loc_us-gaap_FinancingReceivables30To59DaysPastDueMember_01a087ea-1b01-7474-b827-f532d247b6d1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivables60To89DaysPastDueMember_01a087ea-1b01-7a29-96e3-23b661b72dc4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivables60To89DaysPastDueMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivablesPeriodPastDueDomain_01a087ea-1b01-7eb4-bee5-91fb541860da" xlink:to="loc_us-gaap_FinancingReceivables60To89DaysPastDueMember_01a087ea-1b01-7a29-96e3-23b661b72dc4" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivablesEqualToGreaterThan90DaysPastDueMember_01a087ea-1b01-7925-9f6e-1f294022b375" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivablesEqualToGreaterThan90DaysPastDueMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivablesPeriodPastDueDomain_01a087ea-1b01-7eb4-bee5-91fb541860da" xlink:to="loc_us-gaap_FinancingReceivablesEqualToGreaterThan90DaysPastDueMember_01a087ea-1b01-7925-9f6e-1f294022b375" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_boh_NonAccuralMember_01a087ea-1b01-7c27-84d7-786edce6b711" xlink:href="boh-20260930.xsd#boh_NonAccuralMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivablesPeriodPastDueDomain_01a087ea-1b01-7eb4-bee5-91fb541860da" xlink:to="loc_boh_NonAccuralMember_01a087ea-1b01-7c27-84d7-786edce6b711" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableExcludingAccruedInterestModifiedAccumulated_01a087ea-1b01-749a-b39c-fbbaf3c5b0dd" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableExcludingAccruedInterestModifiedAccumulated"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableModificationsLineItems_01a087ea-1b01-7216-8235-3ee50820ac68" xlink:to="loc_us-gaap_FinancingReceivableExcludingAccruedInterestModifiedAccumulated_01a087ea-1b01-749a-b39c-fbbaf3c5b0dd" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.boh.com/role/MortgageServicingRightsSummaryofCarryingValueUndertheFairValueMeasurementMethodDetails" xlink:type="simple" xlink:href="boh-20260930.xsd#MortgageServicingRightsSummaryofCarryingValueUndertheFairValueMeasurementMethodDetails"/>
  <link:definitionLink xlink:role="http://www.boh.com/role/MortgageServicingRightsSummaryofCarryingValueUndertheFairValueMeasurementMethodDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ServicingAssetsAtFairValueLineItems_01a087ea-1b01-7c67-a250-dd7dfe289de6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ServicingAssetsAtFairValueLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ServicingAssetsAtFairValueTable_01a087ea-1b01-737d-ac87-b739cd4cd57e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ServicingAssetsAtFairValueTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ServicingAssetsAtFairValueLineItems_01a087ea-1b01-7c67-a250-dd7dfe289de6" xlink:to="loc_us-gaap_ServicingAssetsAtFairValueTable_01a087ea-1b01-737d-ac87-b739cd4cd57e" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancialInstrumentAxis_01a087ea-1b01-7eca-853c-8c8b970e0349" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancialInstrumentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ServicingAssetsAtFairValueTable_01a087ea-1b01-737d-ac87-b739cd4cd57e" xlink:to="loc_us-gaap_FinancialInstrumentAxis_01a087ea-1b01-7eca-853c-8c8b970e0349" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_01a087ea-1b01-7eca-853c-8c8b970e0349_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FinancialInstrumentAxis_01a087ea-1b01-7eca-853c-8c8b970e0349" xlink:to="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_01a087ea-1b01-7eca-853c-8c8b970e0349_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_01a087ea-1b01-7177-acaa-7103bb69dbc0" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FinancialInstrumentAxis_01a087ea-1b01-7eca-853c-8c8b970e0349" xlink:to="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_01a087ea-1b01-7177-acaa-7103bb69dbc0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_boh_MortgageServicingRightsMember_01a087ea-1b01-7315-afb6-49f3e75ee0c9" xlink:href="boh-20260930.xsd#boh_MortgageServicingRightsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_01a087ea-1b01-7177-acaa-7103bb69dbc0" xlink:to="loc_boh_MortgageServicingRightsMember_01a087ea-1b01-7315-afb6-49f3e75ee0c9" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_boh_ServicingOfFinancialAssetsFairValueMeasurementRollForward_01a087ea-1b01-7b13-a996-7ccbc6d4c465" xlink:href="boh-20260930.xsd#boh_ServicingOfFinancialAssetsFairValueMeasurementRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ServicingAssetsAtFairValueLineItems_01a087ea-1b01-7c67-a250-dd7dfe289de6" xlink:to="loc_boh_ServicingOfFinancialAssetsFairValueMeasurementRollForward_01a087ea-1b01-7b13-a996-7ccbc6d4c465" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ServicingAssetAtFairValueAmount_01a087ea-1b01-76a8-acbf-00784d3f66a5" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ServicingAssetAtFairValueAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_boh_ServicingOfFinancialAssetsFairValueMeasurementRollForward_01a087ea-1b01-7b13-a996-7ccbc6d4c465" xlink:to="loc_us-gaap_ServicingAssetAtFairValueAmount_01a087ea-1b01-76a8-acbf-00784d3f66a5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_boh_ServicingAssetAtFairValuePayoffs_01a087ea-1b01-708a-bfc2-a4951f7c06d3" xlink:href="boh-20260930.xsd#boh_ServicingAssetAtFairValuePayoffs"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_boh_ServicingOfFinancialAssetsFairValueMeasurementRollForward_01a087ea-1b01-7b13-a996-7ccbc6d4c465" xlink:to="loc_boh_ServicingAssetAtFairValuePayoffs_01a087ea-1b01-708a-bfc2-a4951f7c06d3" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ServicingAssetAtFairValueAmount_01a087ea-1b01-7b10-93a8-beacb17de977" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ServicingAssetAtFairValueAmount"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.boh.com/role/MortgageServicingRightsSummaryofCarryingValueUndertheAmortizationMethodDetails" xlink:type="simple" xlink:href="boh-20260930.xsd#MortgageServicingRightsSummaryofCarryingValueUndertheAmortizationMethodDetails"/>
  <link:definitionLink xlink:role="http://www.boh.com/role/MortgageServicingRightsSummaryofCarryingValueUndertheAmortizationMethodDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ServicingAssetsAtAmortizedValueLineItems_01a087ea-1b01-73cc-a598-552a90982fc4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ServicingAssetsAtAmortizedValueLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ServicingAssetsAtAmortizedValueTable_01a087ea-1b01-7046-96c9-34b1b17b4157" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ServicingAssetsAtAmortizedValueTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ServicingAssetsAtAmortizedValueLineItems_01a087ea-1b01-73cc-a598-552a90982fc4" xlink:to="loc_us-gaap_ServicingAssetsAtAmortizedValueTable_01a087ea-1b01-7046-96c9-34b1b17b4157" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancialInstrumentAxis_01a087ea-1b01-7720-80e7-eca604b9c425" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancialInstrumentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ServicingAssetsAtAmortizedValueTable_01a087ea-1b01-7046-96c9-34b1b17b4157" xlink:to="loc_us-gaap_FinancialInstrumentAxis_01a087ea-1b01-7720-80e7-eca604b9c425" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_01a087ea-1b01-7720-80e7-eca604b9c425_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FinancialInstrumentAxis_01a087ea-1b01-7720-80e7-eca604b9c425" xlink:to="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_01a087ea-1b01-7720-80e7-eca604b9c425_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_01a087ea-1b01-7b6f-94e6-6fe28fcbb9c0" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FinancialInstrumentAxis_01a087ea-1b01-7720-80e7-eca604b9c425" xlink:to="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_01a087ea-1b01-7b6f-94e6-6fe28fcbb9c0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_boh_MortgageServicingRightsMember_01a087ea-1b01-74bf-9f56-8a76a0238075" xlink:href="boh-20260930.xsd#boh_MortgageServicingRightsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_01a087ea-1b01-7b6f-94e6-6fe28fcbb9c0" xlink:to="loc_boh_MortgageServicingRightsMember_01a087ea-1b01-74bf-9f56-8a76a0238075" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ServicingAssetAtAmortizedValueBalanceRollForward_01a087ea-1b01-754b-baa0-619814e47093" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ServicingAssetAtAmortizedValueBalanceRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ServicingAssetsAtAmortizedValueLineItems_01a087ea-1b01-73cc-a598-552a90982fc4" xlink:to="loc_us-gaap_ServicingAssetAtAmortizedValueBalanceRollForward_01a087ea-1b01-754b-baa0-619814e47093" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ServicingAssetAtAmortizedValue_01a087ea-1b01-7645-95d8-0e39dd13b6b5" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ServicingAssetAtAmortizedValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ServicingAssetAtAmortizedValueBalanceRollForward_01a087ea-1b01-754b-baa0-619814e47093" xlink:to="loc_us-gaap_ServicingAssetAtAmortizedValue_01a087ea-1b01-7645-95d8-0e39dd13b6b5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ServicingAssetAtAmortizedValueAdditions_01a087ea-1b01-7352-ba84-38fdaf262f42" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ServicingAssetAtAmortizedValueAdditions"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ServicingAssetAtAmortizedValueBalanceRollForward_01a087ea-1b01-754b-baa0-619814e47093" xlink:to="loc_us-gaap_ServicingAssetAtAmortizedValueAdditions_01a087ea-1b01-7352-ba84-38fdaf262f42" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ServicingAssetAtAmortizedValueAmortization1_01a087ea-1b01-76d8-8f19-f8a95bde973d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ServicingAssetAtAmortizedValueAmortization1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ServicingAssetAtAmortizedValueBalanceRollForward_01a087ea-1b01-754b-baa0-619814e47093" xlink:to="loc_us-gaap_ServicingAssetAtAmortizedValueAmortization1_01a087ea-1b01-76d8-8f19-f8a95bde973d" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ServicingAssetAtAmortizedValue_01a087ea-1b01-7205-8c1b-11bbcc80c672" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ServicingAssetAtAmortizedValue"/>
    <link:loc xlink:type="locator" xlink:label="loc_boh_FairValueOfMortgageServicingRightsAccountedForUnderAmortizationMethodAbstract_01a087ea-1b01-7f80-86ba-e5b0781bd2cf" xlink:href="boh-20260930.xsd#boh_FairValueOfMortgageServicingRightsAccountedForUnderAmortizationMethodAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ServicingAssetAtAmortizedValueBalanceRollForward_01a087ea-1b01-754b-baa0-619814e47093" xlink:to="loc_boh_FairValueOfMortgageServicingRightsAccountedForUnderAmortizationMethodAbstract_01a087ea-1b01-7f80-86ba-e5b0781bd2cf" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ServicingAssetAtAmortizedValueFairValue_01a087ea-1b01-74e6-83b5-ec4798b65f1f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ServicingAssetAtAmortizedValueFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_boh_FairValueOfMortgageServicingRightsAccountedForUnderAmortizationMethodAbstract_01a087ea-1b01-7f80-86ba-e5b0781bd2cf" xlink:to="loc_us-gaap_ServicingAssetAtAmortizedValueFairValue_01a087ea-1b01-74e6-83b5-ec4798b65f1f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ServicingAssetAtAmortizedValueFairValue_01a087ea-1b01-70bb-9ef1-58019489df90" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ServicingAssetAtAmortizedValueFairValue"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.boh.com/role/MortgageServicingRightsScheduleofKeyDataandAssumptionsUsedinEstimatingtheFairValueDetails" xlink:type="simple" xlink:href="boh-20260930.xsd#MortgageServicingRightsScheduleofKeyDataandAssumptionsUsedinEstimatingtheFairValueDetails"/>
  <link:definitionLink xlink:role="http://www.boh.com/role/MortgageServicingRightsScheduleofKeyDataandAssumptionsUsedinEstimatingtheFairValueDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssumptionForFairValueAsOfBalanceSheetDateOfInterestsContinuedToBeHeldByTransferorServicingAssetsOrLiabilitiesLineItems_01a087ea-1b01-78a8-b08e-fe44b1a2d8ea" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AssumptionForFairValueAsOfBalanceSheetDateOfInterestsContinuedToBeHeldByTransferorServicingAssetsOrLiabilitiesLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssumptionForFairValueAsOfBalanceSheetDateOfInterestsContinuedToBeHeldByTransferorServicingAssetsOrLiabilitiesTable_01a087ea-1b01-7996-bcd0-2cb8ae177ffb" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AssumptionForFairValueAsOfBalanceSheetDateOfInterestsContinuedToBeHeldByTransferorServicingAssetsOrLiabilitiesTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_AssumptionForFairValueAsOfBalanceSheetDateOfInterestsContinuedToBeHeldByTransferorServicingAssetsOrLiabilitiesLineItems_01a087ea-1b01-78a8-b08e-fe44b1a2d8ea" xlink:to="loc_us-gaap_AssumptionForFairValueAsOfBalanceSheetDateOfInterestsContinuedToBeHeldByTransferorServicingAssetsOrLiabilitiesTable_01a087ea-1b01-7996-bcd0-2cb8ae177ffb" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancialInstrumentAxis_01a087ea-1b01-735a-8d9f-5d040d30416c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancialInstrumentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_AssumptionForFairValueAsOfBalanceSheetDateOfInterestsContinuedToBeHeldByTransferorServicingAssetsOrLiabilitiesTable_01a087ea-1b01-7996-bcd0-2cb8ae177ffb" xlink:to="loc_us-gaap_FinancialInstrumentAxis_01a087ea-1b01-735a-8d9f-5d040d30416c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_01a087ea-1b01-735a-8d9f-5d040d30416c_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FinancialInstrumentAxis_01a087ea-1b01-735a-8d9f-5d040d30416c" xlink:to="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_01a087ea-1b01-735a-8d9f-5d040d30416c_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_01a087ea-1b01-70b5-ac31-870bcf5f1dd4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FinancialInstrumentAxis_01a087ea-1b01-735a-8d9f-5d040d30416c" xlink:to="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_01a087ea-1b01-70b5-ac31-870bcf5f1dd4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_boh_MortgageServicingRightsMember_01a087ea-1b01-762d-a96c-7c452856af1f" xlink:href="boh-20260930.xsd#boh_MortgageServicingRightsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_01a087ea-1b01-70b5-ac31-870bcf5f1dd4" xlink:to="loc_boh_MortgageServicingRightsMember_01a087ea-1b01-762d-a96c-7c452856af1f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssumptionForFairValueOfInterestsContinuedToBeHeldByTransferorServicingAssetsOrLiabilitiesPrepaymentSpeed_01a087ea-1b01-73ad-b107-79b6b80eef8c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AssumptionForFairValueOfInterestsContinuedToBeHeldByTransferorServicingAssetsOrLiabilitiesPrepaymentSpeed"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssumptionForFairValueAsOfBalanceSheetDateOfInterestsContinuedToBeHeldByTransferorServicingAssetsOrLiabilitiesLineItems_01a087ea-1b01-78a8-b08e-fe44b1a2d8ea" xlink:to="loc_us-gaap_AssumptionForFairValueOfInterestsContinuedToBeHeldByTransferorServicingAssetsOrLiabilitiesPrepaymentSpeed_01a087ea-1b01-73ad-b107-79b6b80eef8c" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssumptionForFairValueOfAssetsOrLiabilitiesThatRelateToTransferorsContinuingInvolvementWeightedAverageLife1_01a087ea-1b01-707c-b7ea-93ba838df6a4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AssumptionForFairValueOfAssetsOrLiabilitiesThatRelateToTransferorsContinuingInvolvementWeightedAverageLife1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssumptionForFairValueAsOfBalanceSheetDateOfInterestsContinuedToBeHeldByTransferorServicingAssetsOrLiabilitiesLineItems_01a087ea-1b01-78a8-b08e-fe44b1a2d8ea" xlink:to="loc_us-gaap_AssumptionForFairValueOfAssetsOrLiabilitiesThatRelateToTransferorsContinuingInvolvementWeightedAverageLife1_01a087ea-1b01-707c-b7ea-93ba838df6a4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_boh_AssumptionForFairValueOfInterestsContinuedToBeHeldByTransferorServicingAssetsOrLiabilitiesNoteRate_01a087ea-1b01-7a81-8ccf-4f03595be54a" xlink:href="boh-20260930.xsd#boh_AssumptionForFairValueOfInterestsContinuedToBeHeldByTransferorServicingAssetsOrLiabilitiesNoteRate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssumptionForFairValueAsOfBalanceSheetDateOfInterestsContinuedToBeHeldByTransferorServicingAssetsOrLiabilitiesLineItems_01a087ea-1b01-78a8-b08e-fe44b1a2d8ea" xlink:to="loc_boh_AssumptionForFairValueOfInterestsContinuedToBeHeldByTransferorServicingAssetsOrLiabilitiesNoteRate_01a087ea-1b01-7a81-8ccf-4f03595be54a" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssumptionForFairValueOfInterestsContinuedToBeHeldByTransferorServicingAssetsOrLiabilitiesDiscountRate_01a087ea-1b01-72a0-81e8-0e3ff6209224" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AssumptionForFairValueOfInterestsContinuedToBeHeldByTransferorServicingAssetsOrLiabilitiesDiscountRate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssumptionForFairValueAsOfBalanceSheetDateOfInterestsContinuedToBeHeldByTransferorServicingAssetsOrLiabilitiesLineItems_01a087ea-1b01-78a8-b08e-fe44b1a2d8ea" xlink:to="loc_us-gaap_AssumptionForFairValueOfInterestsContinuedToBeHeldByTransferorServicingAssetsOrLiabilitiesDiscountRate_01a087ea-1b01-72a0-81e8-0e3ff6209224" xlink:type="arc" order="3"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.boh.com/role/MortgageServicingRightsScheduleofSensitivityAnalysisoftheFairValueDetails" xlink:type="simple" xlink:href="boh-20260930.xsd#MortgageServicingRightsScheduleofSensitivityAnalysisoftheFairValueDetails"/>
  <link:definitionLink xlink:role="http://www.boh.com/role/MortgageServicingRightsScheduleofSensitivityAnalysisoftheFairValueDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SensitivityAnalysisOfFairValueOfInterestsContinuedToBeHeldByTransferorServicingAssetsOrLiabilitiesImpactOfAdverseChangeInAssumptionLineItems_01a087ea-1b01-79c2-91e6-a1eed4bf994d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SensitivityAnalysisOfFairValueOfInterestsContinuedToBeHeldByTransferorServicingAssetsOrLiabilitiesImpactOfAdverseChangeInAssumptionLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SensitivityAnalysisOfFairValueOfInterestsContinuedToBeHeldByTransferorServicingAssetsOrLiabilitiesTable_01a087ea-1b01-71b9-95aa-398029c8566e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SensitivityAnalysisOfFairValueOfInterestsContinuedToBeHeldByTransferorServicingAssetsOrLiabilitiesTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_SensitivityAnalysisOfFairValueOfInterestsContinuedToBeHeldByTransferorServicingAssetsOrLiabilitiesImpactOfAdverseChangeInAssumptionLineItems_01a087ea-1b01-79c2-91e6-a1eed4bf994d" xlink:to="loc_us-gaap_SensitivityAnalysisOfFairValueOfInterestsContinuedToBeHeldByTransferorServicingAssetsOrLiabilitiesTable_01a087ea-1b01-71b9-95aa-398029c8566e" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancialInstrumentAxis_01a087ea-1b01-7d5d-83d1-a018442d342f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancialInstrumentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_SensitivityAnalysisOfFairValueOfInterestsContinuedToBeHeldByTransferorServicingAssetsOrLiabilitiesTable_01a087ea-1b01-71b9-95aa-398029c8566e" xlink:to="loc_us-gaap_FinancialInstrumentAxis_01a087ea-1b01-7d5d-83d1-a018442d342f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_01a087ea-1b01-7d5d-83d1-a018442d342f_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FinancialInstrumentAxis_01a087ea-1b01-7d5d-83d1-a018442d342f" xlink:to="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_01a087ea-1b01-7d5d-83d1-a018442d342f_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_01a087ea-1b01-78b0-af56-32ab565202f3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FinancialInstrumentAxis_01a087ea-1b01-7d5d-83d1-a018442d342f" xlink:to="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_01a087ea-1b01-78b0-af56-32ab565202f3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_boh_MortgageServicingRightsMember_01a087ea-1b01-7dce-aa8a-687a3fcc9c46" xlink:href="boh-20260930.xsd#boh_MortgageServicingRightsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_01a087ea-1b01-78b0-af56-32ab565202f3" xlink:to="loc_boh_MortgageServicingRightsMember_01a087ea-1b01-7dce-aa8a-687a3fcc9c46" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_boh_SensitivityAnalysisOfFairValueOfInterestsContinuedToBeHeldByTransferorServicingAssetsOrLiabilitiesImpactInPrepaymentSpeedAbstract_01a087ea-1b01-7cdb-af59-e365ff2feac6" xlink:href="boh-20260930.xsd#boh_SensitivityAnalysisOfFairValueOfInterestsContinuedToBeHeldByTransferorServicingAssetsOrLiabilitiesImpactInPrepaymentSpeedAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SensitivityAnalysisOfFairValueOfInterestsContinuedToBeHeldByTransferorServicingAssetsOrLiabilitiesImpactOfAdverseChangeInAssumptionLineItems_01a087ea-1b01-79c2-91e6-a1eed4bf994d" xlink:to="loc_boh_SensitivityAnalysisOfFairValueOfInterestsContinuedToBeHeldByTransferorServicingAssetsOrLiabilitiesImpactInPrepaymentSpeedAbstract_01a087ea-1b01-7cdb-af59-e365ff2feac6" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_boh_SensitivityAnalysisOfFairValueOfInterestsContinuedToBeHeldByTransferorServicingAssetsOrLiabilitiesImpactFrom25BasisPointsAdverseChangeInPrepaymentSpeed_01a087ea-1b01-753b-822b-a4f4ea775a7e" xlink:href="boh-20260930.xsd#boh_SensitivityAnalysisOfFairValueOfInterestsContinuedToBeHeldByTransferorServicingAssetsOrLiabilitiesImpactFrom25BasisPointsAdverseChangeInPrepaymentSpeed"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_boh_SensitivityAnalysisOfFairValueOfInterestsContinuedToBeHeldByTransferorServicingAssetsOrLiabilitiesImpactInPrepaymentSpeedAbstract_01a087ea-1b01-7cdb-af59-e365ff2feac6" xlink:to="loc_boh_SensitivityAnalysisOfFairValueOfInterestsContinuedToBeHeldByTransferorServicingAssetsOrLiabilitiesImpactFrom25BasisPointsAdverseChangeInPrepaymentSpeed_01a087ea-1b01-753b-822b-a4f4ea775a7e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_boh_SensitivityAnalysisOfFairValueOfInterestsContinuedToBeHeldByTransferorServicingAssetsOrLiabilitiesImpactFrom50BasisPointsAdverseChangeInPrepaymentSpeed_01a087ea-1b01-78bf-860e-218276611f95" xlink:href="boh-20260930.xsd#boh_SensitivityAnalysisOfFairValueOfInterestsContinuedToBeHeldByTransferorServicingAssetsOrLiabilitiesImpactFrom50BasisPointsAdverseChangeInPrepaymentSpeed"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_boh_SensitivityAnalysisOfFairValueOfInterestsContinuedToBeHeldByTransferorServicingAssetsOrLiabilitiesImpactInPrepaymentSpeedAbstract_01a087ea-1b01-7cdb-af59-e365ff2feac6" xlink:to="loc_boh_SensitivityAnalysisOfFairValueOfInterestsContinuedToBeHeldByTransferorServicingAssetsOrLiabilitiesImpactFrom50BasisPointsAdverseChangeInPrepaymentSpeed_01a087ea-1b01-78bf-860e-218276611f95" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_boh_SensitivityAnalysisOfFairValueOfInterestsContinuedToBeHeldByTransferorServicingAssetsOrLiabilitiesImpactInDiscountRateAbstract_01a087ea-1b01-77f0-a392-2ff48b95489b" xlink:href="boh-20260930.xsd#boh_SensitivityAnalysisOfFairValueOfInterestsContinuedToBeHeldByTransferorServicingAssetsOrLiabilitiesImpactInDiscountRateAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SensitivityAnalysisOfFairValueOfInterestsContinuedToBeHeldByTransferorServicingAssetsOrLiabilitiesImpactOfAdverseChangeInAssumptionLineItems_01a087ea-1b01-79c2-91e6-a1eed4bf994d" xlink:to="loc_boh_SensitivityAnalysisOfFairValueOfInterestsContinuedToBeHeldByTransferorServicingAssetsOrLiabilitiesImpactInDiscountRateAbstract_01a087ea-1b01-77f0-a392-2ff48b95489b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_boh_SensitivityAnalysisOfFairValueOfInterestsContinuedToBeHeldByTransferorServicingAssetsOrLiabilitiesImpactFrom25BasisPointsAdverseChangeInDiscountRate_01a087ea-1b01-7a6b-8a37-d45e2afac92e" xlink:href="boh-20260930.xsd#boh_SensitivityAnalysisOfFairValueOfInterestsContinuedToBeHeldByTransferorServicingAssetsOrLiabilitiesImpactFrom25BasisPointsAdverseChangeInDiscountRate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_boh_SensitivityAnalysisOfFairValueOfInterestsContinuedToBeHeldByTransferorServicingAssetsOrLiabilitiesImpactInDiscountRateAbstract_01a087ea-1b01-77f0-a392-2ff48b95489b" xlink:to="loc_boh_SensitivityAnalysisOfFairValueOfInterestsContinuedToBeHeldByTransferorServicingAssetsOrLiabilitiesImpactFrom25BasisPointsAdverseChangeInDiscountRate_01a087ea-1b01-7a6b-8a37-d45e2afac92e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_boh_SensitivityAnalysisOfFairValueOfInterestsContinuedToBeHeldByTransferorServicingAssetsOrLiabilitiesImpactFrom50BasisPointsAdverseChangeInDiscountRate_01a087ea-1b01-7246-99c1-53d930d12356" xlink:href="boh-20260930.xsd#boh_SensitivityAnalysisOfFairValueOfInterestsContinuedToBeHeldByTransferorServicingAssetsOrLiabilitiesImpactFrom50BasisPointsAdverseChangeInDiscountRate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_boh_SensitivityAnalysisOfFairValueOfInterestsContinuedToBeHeldByTransferorServicingAssetsOrLiabilitiesImpactInDiscountRateAbstract_01a087ea-1b01-77f0-a392-2ff48b95489b" xlink:to="loc_boh_SensitivityAnalysisOfFairValueOfInterestsContinuedToBeHeldByTransferorServicingAssetsOrLiabilitiesImpactFrom50BasisPointsAdverseChangeInDiscountRate_01a087ea-1b01-7246-99c1-53d930d12356" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.boh.com/role/SecuritiesSoldUnderAgreementstoRepurchaseRemainingContractualMaturitiesofRepurchaseAgreementsbyClassofCollateralPledgedDetails" xlink:type="simple" xlink:href="boh-20260930.xsd#SecuritiesSoldUnderAgreementstoRepurchaseRemainingContractualMaturitiesofRepurchaseAgreementsbyClassofCollateralPledgedDetails"/>
  <link:definitionLink xlink:role="http://www.boh.com/role/SecuritiesSoldUnderAgreementstoRepurchaseRemainingContractualMaturitiesofRepurchaseAgreementsbyClassofCollateralPledgedDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsSoldUnderAgreementsToRepurchaseLineItems_01a087ea-1b01-7961-a5c9-aca3476b3478" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AssetsSoldUnderAgreementsToRepurchaseLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfAssetsSoldUnderAgreementsToRepurchaseTable_01a087ea-1b01-7a84-b091-070dbe5ff35e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfAssetsSoldUnderAgreementsToRepurchaseTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_AssetsSoldUnderAgreementsToRepurchaseLineItems_01a087ea-1b01-7961-a5c9-aca3476b3478" xlink:to="loc_us-gaap_ScheduleOfAssetsSoldUnderAgreementsToRepurchaseTable_01a087ea-1b01-7a84-b091-070dbe5ff35e" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsSoldUnderAgreementsToRepurchaseMaturityPeriodsAxis_01a087ea-1b01-7118-bb69-ab3817427221" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AssetsSoldUnderAgreementsToRepurchaseMaturityPeriodsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfAssetsSoldUnderAgreementsToRepurchaseTable_01a087ea-1b01-7a84-b091-070dbe5ff35e" xlink:to="loc_us-gaap_AssetsSoldUnderAgreementsToRepurchaseMaturityPeriodsAxis_01a087ea-1b01-7118-bb69-ab3817427221" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsSoldUnderAgreementsToRepurchaseMaturityPeriodDomain_01a087ea-1b01-7118-bb69-ab3817427221_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AssetsSoldUnderAgreementsToRepurchaseMaturityPeriodDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AssetsSoldUnderAgreementsToRepurchaseMaturityPeriodsAxis_01a087ea-1b01-7118-bb69-ab3817427221" xlink:to="loc_us-gaap_AssetsSoldUnderAgreementsToRepurchaseMaturityPeriodDomain_01a087ea-1b01-7118-bb69-ab3817427221_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsSoldUnderAgreementsToRepurchaseMaturityPeriodDomain_01a087ea-1b01-719e-88b6-2131ec63160a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AssetsSoldUnderAgreementsToRepurchaseMaturityPeriodDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AssetsSoldUnderAgreementsToRepurchaseMaturityPeriodsAxis_01a087ea-1b01-7118-bb69-ab3817427221" xlink:to="loc_us-gaap_AssetsSoldUnderAgreementsToRepurchaseMaturityPeriodDomain_01a087ea-1b01-719e-88b6-2131ec63160a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_boh_MaturityUpTo90DaysMember_01a087ea-1b01-7c20-a816-df72f0a6554c" xlink:href="boh-20260930.xsd#boh_MaturityUpTo90DaysMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsSoldUnderAgreementsToRepurchaseMaturityPeriodDomain_01a087ea-1b01-719e-88b6-2131ec63160a" xlink:to="loc_boh_MaturityUpTo90DaysMember_01a087ea-1b01-7c20-a816-df72f0a6554c" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_boh_MaturityFrom91DaysTo365DaysMember_01a087ea-1b01-7fd7-b0c0-e477d28aba03" xlink:href="boh-20260930.xsd#boh_MaturityFrom91DaysTo365DaysMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsSoldUnderAgreementsToRepurchaseMaturityPeriodDomain_01a087ea-1b01-719e-88b6-2131ec63160a" xlink:to="loc_boh_MaturityFrom91DaysTo365DaysMember_01a087ea-1b01-7fd7-b0c0-e477d28aba03" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_boh_Maturity1To3YearsMember_01a087ea-1b01-71be-9061-c02bde00b7f8" xlink:href="boh-20260930.xsd#boh_Maturity1To3YearsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsSoldUnderAgreementsToRepurchaseMaturityPeriodDomain_01a087ea-1b01-719e-88b6-2131ec63160a" xlink:to="loc_boh_Maturity1To3YearsMember_01a087ea-1b01-71be-9061-c02bde00b7f8" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_boh_MaturityAfter3YearsMember_01a087ea-1b01-7393-a121-824dcac541b9" xlink:href="boh-20260930.xsd#boh_MaturityAfter3YearsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsSoldUnderAgreementsToRepurchaseMaturityPeriodDomain_01a087ea-1b01-719e-88b6-2131ec63160a" xlink:to="loc_boh_MaturityAfter3YearsMember_01a087ea-1b01-7393-a121-824dcac541b9" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancialInstrumentAxis_01a087ea-1b01-7d52-b2ae-a6d822771318" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancialInstrumentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfAssetsSoldUnderAgreementsToRepurchaseTable_01a087ea-1b01-7a84-b091-070dbe5ff35e" xlink:to="loc_us-gaap_FinancialInstrumentAxis_01a087ea-1b01-7d52-b2ae-a6d822771318" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_01a087ea-1b01-7d52-b2ae-a6d822771318_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FinancialInstrumentAxis_01a087ea-1b01-7d52-b2ae-a6d822771318" xlink:to="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_01a087ea-1b01-7d52-b2ae-a6d822771318_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_01a087ea-1b01-7281-a752-055b03741735" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FinancialInstrumentAxis_01a087ea-1b01-7d52-b2ae-a6d822771318" xlink:to="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_01a087ea-1b01-7281-a752-055b03741735" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_boh_ResidentialMortgageBackedSecuritiesIssuedByUSGovernmentSponsoredEnterprisesMember_01a087ea-1b01-76bc-9932-99a1b580b6f0" xlink:href="boh-20260930.xsd#boh_ResidentialMortgageBackedSecuritiesIssuedByUSGovernmentSponsoredEnterprisesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_01a087ea-1b01-7281-a752-055b03741735" xlink:to="loc_boh_ResidentialMortgageBackedSecuritiesIssuedByUSGovernmentSponsoredEnterprisesMember_01a087ea-1b01-76bc-9932-99a1b580b6f0" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SecuritiesSoldUnderAgreementsToRepurchaseGross_01a087ea-1b01-7eeb-8432-d020c6e53cb7" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SecuritiesSoldUnderAgreementsToRepurchaseGross"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsSoldUnderAgreementsToRepurchaseLineItems_01a087ea-1b01-7961-a5c9-aca3476b3478" xlink:to="loc_us-gaap_SecuritiesSoldUnderAgreementsToRepurchaseGross_01a087ea-1b01-7eeb-8432-d020c6e53cb7" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.boh.com/role/AccumulatedOtherComprehensiveIncomeLossAOCIComponentsPrePostTaxEffectDetails" xlink:type="simple" xlink:href="boh-20260930.xsd#AccumulatedOtherComprehensiveIncomeLossAOCIComponentsPrePostTaxEffectDetails"/>
  <link:definitionLink xlink:role="http://www.boh.com/role/AccumulatedOtherComprehensiveIncomeLossAOCIComponentsPrePostTaxEffectDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems_01a087ea-1b01-7f31-b767-4b7315552733" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossTable_01a087ea-1b01-74b0-a9c2-af8030e49f30" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems_01a087ea-1b01-7f31-b767-4b7315552733" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossTable_01a087ea-1b01-74b0-a9c2-af8030e49f30" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementEquityComponentsAxis_01a087ea-1b01-7675-9e31-99fd2b779d0f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementEquityComponentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossTable_01a087ea-1b01-74b0-a9c2-af8030e49f30" xlink:to="loc_us-gaap_StatementEquityComponentsAxis_01a087ea-1b01-7675-9e31-99fd2b779d0f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_01a087ea-1b01-7675-9e31-99fd2b779d0f_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EquityComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_01a087ea-1b01-7675-9e31-99fd2b779d0f" xlink:to="loc_us-gaap_EquityComponentDomain_01a087ea-1b01-7675-9e31-99fd2b779d0f_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_01a087ea-1b01-77c8-a455-5eacdc351afa" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EquityComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_01a087ea-1b01-7675-9e31-99fd2b779d0f" xlink:to="loc_us-gaap_EquityComponentDomain_01a087ea-1b01-77c8-a455-5eacdc351afa" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_boh_AOCIAccumulatedGainLossDebtSecuritiesParentMember_01a087ea-1b01-7d9b-be86-8c8e4a3596f8" xlink:href="boh-20260930.xsd#boh_AOCIAccumulatedGainLossDebtSecuritiesParentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_01a087ea-1b01-77c8-a455-5eacdc351afa" xlink:to="loc_boh_AOCIAccumulatedGainLossDebtSecuritiesParentMember_01a087ea-1b01-7d9b-be86-8c8e4a3596f8" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedNetUnrealizedInvestmentGainLossMember_01a087ea-1b01-75e0-886f-96b6e9b68968" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccumulatedNetUnrealizedInvestmentGainLossMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_boh_AOCIAccumulatedGainLossDebtSecuritiesParentMember_01a087ea-1b01-7d9b-be86-8c8e4a3596f8" xlink:to="loc_us-gaap_AccumulatedNetUnrealizedInvestmentGainLossMember_01a087ea-1b01-75e0-886f-96b6e9b68968" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_boh_AOCIAccumulatedGainLossDebtSecuritiesHeldToMaturityParentMember_01a087ea-1b01-7c96-8108-b3ef10ad9483" xlink:href="boh-20260930.xsd#boh_AOCIAccumulatedGainLossDebtSecuritiesHeldToMaturityParentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_boh_AOCIAccumulatedGainLossDebtSecuritiesParentMember_01a087ea-1b01-7d9b-be86-8c8e4a3596f8" xlink:to="loc_boh_AOCIAccumulatedGainLossDebtSecuritiesHeldToMaturityParentMember_01a087ea-1b01-7c96-8108-b3ef10ad9483" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember_01a087ea-1b01-7f9b-b728-c12a9ed8e27c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_01a087ea-1b01-77c8-a455-5eacdc351afa" xlink:to="loc_us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember_01a087ea-1b01-7f9b-b728-c12a9ed8e27c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedDefinedBenefitPlansAdjustmentNetUnamortizedGainLossMember_01a087ea-1b01-7263-a5ef-abee7257bfd9" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccumulatedDefinedBenefitPlansAdjustmentNetUnamortizedGainLossMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember_01a087ea-1b01-7f9b-b728-c12a9ed8e27c" xlink:to="loc_us-gaap_AccumulatedDefinedBenefitPlansAdjustmentNetUnamortizedGainLossMember_01a087ea-1b01-7263-a5ef-abee7257bfd9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedDefinedBenefitPlansAdjustmentNetPriorServiceCostCreditMember_01a087ea-1b01-7800-9b74-542399547172" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccumulatedDefinedBenefitPlansAdjustmentNetPriorServiceCostCreditMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember_01a087ea-1b01-7f9b-b728-c12a9ed8e27c" xlink:to="loc_us-gaap_AccumulatedDefinedBenefitPlansAdjustmentNetPriorServiceCostCreditMember_01a087ea-1b01-7800-9b74-542399547172" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OciBeforeReclassificationsBeforeTaxAttributableToParent_01a087ea-1b01-7da1-be62-8ff8ef07c860" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OciBeforeReclassificationsBeforeTaxAttributableToParent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems_01a087ea-1b01-7f31-b767-4b7315552733" xlink:to="loc_us-gaap_OciBeforeReclassificationsBeforeTaxAttributableToParent_01a087ea-1b01-7da1-be62-8ff8ef07c860" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsTax_01a087ea-1b01-733b-bc90-3608ccfe79e4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems_01a087ea-1b01-7f31-b767-4b7315552733" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsTax_01a087ea-1b01-733b-bc90-3608ccfe79e4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OciBeforeReclassificationsNetOfTaxAttributableToParent_01a087ea-1b01-7a21-9f1d-6bfca0a2f69d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OciBeforeReclassificationsNetOfTaxAttributableToParent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems_01a087ea-1b01-7f31-b767-4b7315552733" xlink:to="loc_us-gaap_OciBeforeReclassificationsNetOfTaxAttributableToParent_01a087ea-1b01-7a21-9f1d-6bfca0a2f69d" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReclassificationFromAociCurrentPeriodBeforeTaxAttributableToParent_01a087ea-1b01-7a54-a9d9-5fd8e81359aa" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ReclassificationFromAociCurrentPeriodBeforeTaxAttributableToParent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems_01a087ea-1b01-7f31-b767-4b7315552733" xlink:to="loc_us-gaap_ReclassificationFromAociCurrentPeriodBeforeTaxAttributableToParent_01a087ea-1b01-7a54-a9d9-5fd8e81359aa" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReclassificationFromAociCurrentPeriodTax_01a087ea-1b01-7d49-97ae-7ae0433d22d5" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ReclassificationFromAociCurrentPeriodTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems_01a087ea-1b01-7f31-b767-4b7315552733" xlink:to="loc_us-gaap_ReclassificationFromAociCurrentPeriodTax_01a087ea-1b01-7d49-97ae-7ae0433d22d5" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent_01a087ea-1b01-76af-b05f-c72ba8bf89f5" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems_01a087ea-1b01-7f31-b767-4b7315552733" xlink:to="loc_us-gaap_ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent_01a087ea-1b01-76af-b05f-c72ba8bf89f5" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent_01a087ea-1b01-7279-a0fa-9b585c2e141d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems_01a087ea-1b01-7f31-b767-4b7315552733" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent_01a087ea-1b01-7279-a0fa-9b585c2e141d" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossTaxPortionAttributableToParent1_01a087ea-1b01-74a5-85b7-78f630709e8c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherComprehensiveIncomeLossTaxPortionAttributableToParent1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems_01a087ea-1b01-7f31-b767-4b7315552733" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossTaxPortionAttributableToParent1_01a087ea-1b01-74a5-85b7-78f630709e8c" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent_01a087ea-1b01-714d-bac5-4cb0e646bd90" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems_01a087ea-1b01-7f31-b767-4b7315552733" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent_01a087ea-1b01-714d-bac5-4cb0e646bd90" xlink:type="arc" order="8"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.boh.com/role/AccumulatedOtherComprehensiveIncomeLossChangeinAOCIComponentsNetofTaxDetails" xlink:type="simple" xlink:href="boh-20260930.xsd#AccumulatedOtherComprehensiveIncomeLossChangeinAOCIComponentsNetofTaxDetails"/>
  <link:definitionLink xlink:role="http://www.boh.com/role/AccumulatedOtherComprehensiveIncomeLossChangeinAOCIComponentsNetofTaxDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems_01a087ea-1b01-7a2c-86d3-5210cd424aa6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossTable_01a087ea-1b01-7c70-ab81-9ff8ba5f369e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems_01a087ea-1b01-7a2c-86d3-5210cd424aa6" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossTable_01a087ea-1b01-7c70-ab81-9ff8ba5f369e" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementEquityComponentsAxis_01a087ea-1b01-78b9-9640-5c005ce1fe4b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementEquityComponentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossTable_01a087ea-1b01-7c70-ab81-9ff8ba5f369e" xlink:to="loc_us-gaap_StatementEquityComponentsAxis_01a087ea-1b01-78b9-9640-5c005ce1fe4b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_01a087ea-1b01-78b9-9640-5c005ce1fe4b_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EquityComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_01a087ea-1b01-78b9-9640-5c005ce1fe4b" xlink:to="loc_us-gaap_EquityComponentDomain_01a087ea-1b01-78b9-9640-5c005ce1fe4b_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_01a087ea-1b01-71e2-a2c9-eee86f7fc1b6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EquityComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_01a087ea-1b01-78b9-9640-5c005ce1fe4b" xlink:to="loc_us-gaap_EquityComponentDomain_01a087ea-1b01-71e2-a2c9-eee86f7fc1b6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_01a087ea-1b01-7fe3-85ed-a7238fe32d83" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_01a087ea-1b01-71e2-a2c9-eee86f7fc1b6" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_01a087ea-1b01-7fe3-85ed-a7238fe32d83" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedNetUnrealizedInvestmentGainLossMember_01a087ea-1b01-7e4c-b8b4-e8b916556904" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccumulatedNetUnrealizedInvestmentGainLossMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_01a087ea-1b01-7fe3-85ed-a7238fe32d83" xlink:to="loc_us-gaap_AccumulatedNetUnrealizedInvestmentGainLossMember_01a087ea-1b01-7e4c-b8b4-e8b916556904" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_boh_AOCIAccumulatedGainLossDebtSecuritiesHeldToMaturityParentMember_01a087ea-1b01-7483-bd5f-26d7729ecf52" xlink:href="boh-20260930.xsd#boh_AOCIAccumulatedGainLossDebtSecuritiesHeldToMaturityParentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_01a087ea-1b01-7fe3-85ed-a7238fe32d83" xlink:to="loc_boh_AOCIAccumulatedGainLossDebtSecuritiesHeldToMaturityParentMember_01a087ea-1b01-7483-bd5f-26d7729ecf52" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember_01a087ea-1b01-7ec0-8269-c0edb63189b6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_01a087ea-1b01-7fe3-85ed-a7238fe32d83" xlink:to="loc_us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember_01a087ea-1b01-7ec0-8269-c0edb63189b6" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AOCIAttributableToParentNetOfTaxRollForward_01a087ea-1b01-7652-9458-4fb954bd91db" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AOCIAttributableToParentNetOfTaxRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems_01a087ea-1b01-7a2c-86d3-5210cd424aa6" xlink:to="loc_us-gaap_AOCIAttributableToParentNetOfTaxRollForward_01a087ea-1b01-7652-9458-4fb954bd91db" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquity_01a087ea-1b01-7e7b-bee6-992a428c118b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockholdersEquity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AOCIAttributableToParentNetOfTaxRollForward_01a087ea-1b01-7652-9458-4fb954bd91db" xlink:to="loc_us-gaap_StockholdersEquity_01a087ea-1b01-7e7b-bee6-992a428c118b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OciBeforeReclassificationsNetOfTaxAttributableToParent_01a087ea-1b01-723e-964b-66c8d9662a73" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OciBeforeReclassificationsNetOfTaxAttributableToParent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AOCIAttributableToParentNetOfTaxRollForward_01a087ea-1b01-7652-9458-4fb954bd91db" xlink:to="loc_us-gaap_OciBeforeReclassificationsNetOfTaxAttributableToParent_01a087ea-1b01-723e-964b-66c8d9662a73" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent_01a087ea-1b01-77e0-9638-82be776feaf4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AOCIAttributableToParentNetOfTaxRollForward_01a087ea-1b01-7652-9458-4fb954bd91db" xlink:to="loc_us-gaap_ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent_01a087ea-1b01-77e0-9638-82be776feaf4" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent_01a087ea-1b01-74a5-bad5-5d448158122d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AOCIAttributableToParentNetOfTaxRollForward_01a087ea-1b01-7652-9458-4fb954bd91db" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent_01a087ea-1b01-74a5-bad5-5d448158122d" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquity_01a087ea-1b01-7da0-ae3f-ee659d312742" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockholdersEquity"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.boh.com/role/AccumulatedOtherComprehensiveIncomeLossAOCIReclasstoISDetails" xlink:type="simple" xlink:href="boh-20260930.xsd#AccumulatedOtherComprehensiveIncomeLossAOCIReclasstoISDetails"/>
  <link:definitionLink xlink:role="http://www.boh.com/role/AccumulatedOtherComprehensiveIncomeLossAOCIReclasstoISDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReclassificationAdjustmentOutOfAccumulatedOtherComprehensiveIncomeLineItems_01a087ea-1b01-72de-b20e-e54dbc20b79b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ReclassificationAdjustmentOutOfAccumulatedOtherComprehensiveIncomeLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeTable_01a087ea-1b01-7b06-a3a7-40193a56a250" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ReclassificationAdjustmentOutOfAccumulatedOtherComprehensiveIncomeLineItems_01a087ea-1b01-72de-b20e-e54dbc20b79b" xlink:to="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeTable_01a087ea-1b01-7b06-a3a7-40193a56a250" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis_01a087ea-1b01-7d6e-8a5c-98bc6258635f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeTable_01a087ea-1b01-7b06-a3a7-40193a56a250" xlink:to="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis_01a087ea-1b01-7d6e-8a5c-98bc6258635f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeDomain_01a087ea-1b01-7d6e-8a5c-98bc6258635f_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis_01a087ea-1b01-7d6e-8a5c-98bc6258635f" xlink:to="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeDomain_01a087ea-1b01-7d6e-8a5c-98bc6258635f_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeDomain_01a087ea-1b01-7d0e-8a24-d23a115b4901" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis_01a087ea-1b01-7d6e-8a5c-98bc6258635f" xlink:to="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeDomain_01a087ea-1b01-7d0e-8a24-d23a115b4901" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember_01a087ea-1b01-748d-bc6b-1e607dbd9989" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeDomain_01a087ea-1b01-7d0e-8a24-d23a115b4901" xlink:to="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember_01a087ea-1b01-748d-bc6b-1e607dbd9989" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementEquityComponentsAxis_01a087ea-1b01-7ad1-9d26-7dfddfe1b8e5" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementEquityComponentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeTable_01a087ea-1b01-7b06-a3a7-40193a56a250" xlink:to="loc_us-gaap_StatementEquityComponentsAxis_01a087ea-1b01-7ad1-9d26-7dfddfe1b8e5" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_01a087ea-1b01-7ad1-9d26-7dfddfe1b8e5_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EquityComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_01a087ea-1b01-7ad1-9d26-7dfddfe1b8e5" xlink:to="loc_us-gaap_EquityComponentDomain_01a087ea-1b01-7ad1-9d26-7dfddfe1b8e5_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_01a087ea-1b01-77f3-94ee-3e6892408c29" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EquityComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_01a087ea-1b01-7ad1-9d26-7dfddfe1b8e5" xlink:to="loc_us-gaap_EquityComponentDomain_01a087ea-1b01-77f3-94ee-3e6892408c29" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_boh_AmortizationOfUnrealizedHoldingLossesOnInvestmentSecuritiesHeldToMaturityMember_01a087ea-1b01-7ecd-9417-9e1797372cb5" xlink:href="boh-20260930.xsd#boh_AmortizationOfUnrealizedHoldingLossesOnInvestmentSecuritiesHeldToMaturityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_01a087ea-1b01-77f3-94ee-3e6892408c29" xlink:to="loc_boh_AmortizationOfUnrealizedHoldingLossesOnInvestmentSecuritiesHeldToMaturityMember_01a087ea-1b01-7ecd-9417-9e1797372cb5" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember_01a087ea-1b01-761c-bbba-d723db903ad5" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_01a087ea-1b01-77f3-94ee-3e6892408c29" xlink:to="loc_us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember_01a087ea-1b01-761c-bbba-d723db903ad5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedDefinedBenefitPlansAdjustmentNetPriorServiceCostCreditMember_01a087ea-1b01-796f-9d01-22af8f21ce1f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccumulatedDefinedBenefitPlansAdjustmentNetPriorServiceCostCreditMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember_01a087ea-1b01-761c-bbba-d723db903ad5" xlink:to="loc_us-gaap_AccumulatedDefinedBenefitPlansAdjustmentNetPriorServiceCostCreditMember_01a087ea-1b01-796f-9d01-22af8f21ce1f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedDefinedBenefitPlansAdjustmentNetUnamortizedGainLossMember_01a087ea-1b01-7d6e-9c38-2aaf63132f7a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccumulatedDefinedBenefitPlansAdjustmentNetUnamortizedGainLossMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember_01a087ea-1b01-761c-bbba-d723db903ad5" xlink:to="loc_us-gaap_AccumulatedDefinedBenefitPlansAdjustmentNetUnamortizedGainLossMember_01a087ea-1b01-7d6e-9c38-2aaf63132f7a" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentIncomeInterest_01a087ea-1b01-72e3-a2a4-8de3b91618a9" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InvestmentIncomeInterest"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReclassificationAdjustmentOutOfAccumulatedOtherComprehensiveIncomeLineItems_01a087ea-1b01-72de-b20e-e54dbc20b79b" xlink:to="loc_us-gaap_InvestmentIncomeInterest_01a087ea-1b01-72e3-a2a4-8de3b91618a9" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherNoninterestExpense_01a087ea-1b01-7cf1-a7c7-2300e6b1724c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherNoninterestExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReclassificationAdjustmentOutOfAccumulatedOtherComprehensiveIncomeLineItems_01a087ea-1b01-72de-b20e-e54dbc20b79b" xlink:to="loc_us-gaap_OtherNoninterestExpense_01a087ea-1b01-7cf1-a7c7-2300e6b1724c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxExpenseBenefit_01a087ea-1b01-7bd7-983d-a1dd39f5fd12" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncomeTaxExpenseBenefit"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReclassificationAdjustmentOutOfAccumulatedOtherComprehensiveIncomeLineItems_01a087ea-1b01-72de-b20e-e54dbc20b79b" xlink:to="loc_us-gaap_IncomeTaxExpenseBenefit_01a087ea-1b01-7bd7-983d-a1dd39f5fd12" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_01a087ea-1b01-71dd-ad90-a710c4d31f2a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NetIncomeLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReclassificationAdjustmentOutOfAccumulatedOtherComprehensiveIncomeLineItems_01a087ea-1b01-72de-b20e-e54dbc20b79b" xlink:to="loc_us-gaap_NetIncomeLoss_01a087ea-1b01-71dd-ad90-a710c4d31f2a" xlink:type="arc" order="3"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.boh.com/role/BusinessSegmentsAdditionalInformationDetails" xlink:type="simple" xlink:href="boh-20260930.xsd#BusinessSegmentsAdditionalInformationDetails"/>
  <link:definitionLink xlink:role="http://www.boh.com/role/BusinessSegmentsAdditionalInformationDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentReportingInformationLineItems_01a087ea-1b02-7ccd-a1ea-f65ebe651235" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SegmentReportingInformationLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_01a087ea-1b02-7e25-a750-119b2f79b248" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_01a087ea-1b02-7ccd-a1ea-f65ebe651235" xlink:to="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_01a087ea-1b02-7e25-a750-119b2f79b248" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_01a087ea-1b02-7811-91b9-58a62b009641" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementBusinessSegmentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_01a087ea-1b02-7e25-a750-119b2f79b248" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_01a087ea-1b02-7811-91b9-58a62b009641" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_01a087ea-1b02-7811-91b9-58a62b009641_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_01a087ea-1b02-7811-91b9-58a62b009641" xlink:to="loc_us-gaap_SegmentDomain_01a087ea-1b02-7811-91b9-58a62b009641_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_01a087ea-1b02-7b19-b4b1-31bb0173997e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_01a087ea-1b02-7811-91b9-58a62b009641" xlink:to="loc_us-gaap_SegmentDomain_01a087ea-1b02-7b19-b4b1-31bb0173997e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_boh_ConsumerBankingMember_01a087ea-1b02-7ab5-b307-45cf057dc707" xlink:href="boh-20260930.xsd#boh_ConsumerBankingMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_01a087ea-1b02-7b19-b4b1-31bb0173997e" xlink:to="loc_boh_ConsumerBankingMember_01a087ea-1b02-7ab5-b307-45cf057dc707" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_boh_NumberOfReportableSegmentsDisclosedByDefinitionFlag_01a087ea-1b02-7ed8-9d8a-073cba803a2e" xlink:href="boh-20260930.xsd#boh_NumberOfReportableSegmentsDisclosedByDefinitionFlag"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_01a087ea-1b02-7ccd-a1ea-f65ebe651235" xlink:to="loc_boh_NumberOfReportableSegmentsDisclosedByDefinitionFlag_01a087ea-1b02-7ed8-9d8a-073cba803a2e" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_boh_FederalAndStateEffectiveTaxRateUsedForSegmentReporting_01a087ea-1b02-7049-abdb-04fcdc5208ce" xlink:href="boh-20260930.xsd#boh_FederalAndStateEffectiveTaxRateUsedForSegmentReporting"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_01a087ea-1b02-7ccd-a1ea-f65ebe651235" xlink:to="loc_boh_FederalAndStateEffectiveTaxRateUsedForSegmentReporting_01a087ea-1b02-7049-abdb-04fcdc5208ce" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_boh_NumberOfBranchLocationsThroughWhichProductsAndServicesDeliveredToCustomers_01a087ea-1b02-751f-ac80-fa43b71c82cb" xlink:href="boh-20260930.xsd#boh_NumberOfBranchLocationsThroughWhichProductsAndServicesDeliveredToCustomers"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_01a087ea-1b02-7ccd-a1ea-f65ebe651235" xlink:to="loc_boh_NumberOfBranchLocationsThroughWhichProductsAndServicesDeliveredToCustomers_01a087ea-1b02-751f-ac80-fa43b71c82cb" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_boh_NumberOfATMsThroughWhichProductsAndServicesDeliveredToCustomers_01a087ea-1b02-7205-b597-2827d682ec77" xlink:href="boh-20260930.xsd#boh_NumberOfATMsThroughWhichProductsAndServicesDeliveredToCustomers"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_01a087ea-1b02-7ccd-a1ea-f65ebe651235" xlink:to="loc_boh_NumberOfATMsThroughWhichProductsAndServicesDeliveredToCustomers_01a087ea-1b02-7205-b597-2827d682ec77" xlink:type="arc" order="3"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.boh.com/role/BusinessSegmentsSelectedBusinessSegmentFinancialInformationDetails" xlink:type="simple" xlink:href="boh-20260930.xsd#BusinessSegmentsSelectedBusinessSegmentFinancialInformationDetails"/>
  <link:definitionLink xlink:role="http://www.boh.com/role/BusinessSegmentsSelectedBusinessSegmentFinancialInformationDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentReportingInformationLineItems_01a087ea-1b02-7311-b0d3-f64f80a38240" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SegmentReportingInformationLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_01a087ea-1b02-7e0f-9c33-f7f434918f88" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_01a087ea-1b02-7311-b0d3-f64f80a38240" xlink:to="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_01a087ea-1b02-7e0f-9c33-f7f434918f88" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_01a087ea-1b02-7713-baad-9ba45ab1000b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementBusinessSegmentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_01a087ea-1b02-7e0f-9c33-f7f434918f88" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_01a087ea-1b02-7713-baad-9ba45ab1000b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_01a087ea-1b02-7713-baad-9ba45ab1000b_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_01a087ea-1b02-7713-baad-9ba45ab1000b" xlink:to="loc_us-gaap_SegmentDomain_01a087ea-1b02-7713-baad-9ba45ab1000b_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_01a087ea-1b02-76f5-af00-f831f194c961" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_01a087ea-1b02-7713-baad-9ba45ab1000b" xlink:to="loc_us-gaap_SegmentDomain_01a087ea-1b02-76f5-af00-f831f194c961" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_boh_ConsumerBankingMember_01a087ea-1b02-769d-9a1b-d696206a7482" xlink:href="boh-20260930.xsd#boh_ConsumerBankingMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_01a087ea-1b02-76f5-af00-f831f194c961" xlink:to="loc_boh_ConsumerBankingMember_01a087ea-1b02-769d-9a1b-d696206a7482" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_boh_CommercialBankingMember_01a087ea-1b02-7fd5-b1e5-d92e1cd761d0" xlink:href="boh-20260930.xsd#boh_CommercialBankingMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_01a087ea-1b02-76f5-af00-f831f194c961" xlink:to="loc_boh_CommercialBankingMember_01a087ea-1b02-7fd5-b1e5-d92e1cd761d0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_boh_TreasuryAndOtherMember_01a087ea-1b02-71cc-9c9c-4afb3e999ad7" xlink:href="boh-20260930.xsd#boh_TreasuryAndOtherMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_01a087ea-1b02-76f5-af00-f831f194c961" xlink:to="loc_boh_TreasuryAndOtherMember_01a087ea-1b02-71cc-9c9c-4afb3e999ad7" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidationItemsAxis_01a087ea-1b02-76e2-9e80-17ecf5cd0863" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ConsolidationItemsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_01a087ea-1b02-7e0f-9c33-f7f434918f88" xlink:to="loc_srt_ConsolidationItemsAxis_01a087ea-1b02-76e2-9e80-17ecf5cd0863" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidationItemsDomain_01a087ea-1b02-76e2-9e80-17ecf5cd0863_default" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ConsolidationItemsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ConsolidationItemsAxis_01a087ea-1b02-76e2-9e80-17ecf5cd0863" xlink:to="loc_srt_ConsolidationItemsDomain_01a087ea-1b02-76e2-9e80-17ecf5cd0863_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidationItemsDomain_01a087ea-1b02-7256-b676-659b880db4d6" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ConsolidationItemsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ConsolidationItemsAxis_01a087ea-1b02-76e2-9e80-17ecf5cd0863" xlink:to="loc_srt_ConsolidationItemsDomain_01a087ea-1b02-7256-b676-659b880db4d6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingSegmentsMember_01a087ea-1b02-70ce-84f3-b70d15c41e89" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OperatingSegmentsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ConsolidationItemsDomain_01a087ea-1b02-7256-b676-659b880db4d6" xlink:to="loc_us-gaap_OperatingSegmentsMember_01a087ea-1b02-70ce-84f3-b70d15c41e89" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestIncomeExpenseNet_01a087ea-1b02-77e4-a17c-0912d301086d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InterestIncomeExpenseNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_01a087ea-1b02-7311-b0d3-f64f80a38240" xlink:to="loc_us-gaap_InterestIncomeExpenseNet_01a087ea-1b02-77e4-a17c-0912d301086d" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProvisionForLoanLeaseAndOtherLosses_01a087ea-1b02-78c7-aac1-5972550046fd" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ProvisionForLoanLeaseAndOtherLosses"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_01a087ea-1b02-7311-b0d3-f64f80a38240" xlink:to="loc_us-gaap_ProvisionForLoanLeaseAndOtherLosses_01a087ea-1b02-78c7-aac1-5972550046fd" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestIncomeExpenseAfterProvisionForLoanLoss_01a087ea-1b02-7aaa-82b2-5a2d01060564" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InterestIncomeExpenseAfterProvisionForLoanLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_01a087ea-1b02-7311-b0d3-f64f80a38240" xlink:to="loc_us-gaap_InterestIncomeExpenseAfterProvisionForLoanLoss_01a087ea-1b02-7aaa-82b2-5a2d01060564" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NoninterestIncome_01a087ea-1b02-709c-b035-6c854a667b35" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NoninterestIncome"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_01a087ea-1b02-7311-b0d3-f64f80a38240" xlink:to="loc_us-gaap_NoninterestIncome_01a087ea-1b02-709c-b035-6c854a667b35" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LaborAndRelatedExpense_01a087ea-1b02-791f-ba4d-7079d959fcea" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LaborAndRelatedExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_01a087ea-1b02-7311-b0d3-f64f80a38240" xlink:to="loc_us-gaap_LaborAndRelatedExpense_01a087ea-1b02-791f-ba4d-7079d959fcea" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OccupancyNet_01a087ea-1b02-7d5f-a89e-51cf3e449c53" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OccupancyNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_01a087ea-1b02-7311-b0d3-f64f80a38240" xlink:to="loc_us-gaap_OccupancyNet_01a087ea-1b02-7d5f-a89e-51cf3e449c53" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_boh_OtherNoninterestExpenseAdjusted_01a087ea-1b02-7937-a56d-c2360784bd74" xlink:href="boh-20260930.xsd#boh_OtherNoninterestExpenseAdjusted"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_01a087ea-1b02-7311-b0d3-f64f80a38240" xlink:to="loc_boh_OtherNoninterestExpenseAdjusted_01a087ea-1b02-7937-a56d-c2360784bd74" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NoninterestExpense_01a087ea-1b02-738e-bb6c-68dbb4619f0d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NoninterestExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_01a087ea-1b02-7311-b0d3-f64f80a38240" xlink:to="loc_us-gaap_NoninterestExpense_01a087ea-1b02-738e-bb6c-68dbb4619f0d" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_01a087ea-1b02-7353-8c84-2e9d3f24f6e6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_01a087ea-1b02-7311-b0d3-f64f80a38240" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_01a087ea-1b02-7353-8c84-2e9d3f24f6e6" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxExpenseBenefit_01a087ea-1b02-70d2-8380-04084b40c5f8" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncomeTaxExpenseBenefit"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_01a087ea-1b02-7311-b0d3-f64f80a38240" xlink:to="loc_us-gaap_IncomeTaxExpenseBenefit_01a087ea-1b02-70d2-8380-04084b40c5f8" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_01a087ea-1b02-7a9a-9bc4-693932019b4b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NetIncomeLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_01a087ea-1b02-7311-b0d3-f64f80a38240" xlink:to="loc_us-gaap_NetIncomeLoss_01a087ea-1b02-7a9a-9bc4-693932019b4b" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Assets_01a087ea-1b02-72a1-b21c-03b323bb8260" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_Assets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_01a087ea-1b02-7311-b0d3-f64f80a38240" xlink:to="loc_us-gaap_Assets_01a087ea-1b02-72a1-b21c-03b323bb8260" xlink:type="arc" order="11"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.boh.com/role/DerivativeFinancialInstrumentsScheduleoftheNotionalAmountandFairValueoftheDerivativeFinancialInstrumentsDetails" xlink:type="simple" xlink:href="boh-20260930.xsd#DerivativeFinancialInstrumentsScheduleoftheNotionalAmountandFairValueoftheDerivativeFinancialInstrumentsDetails"/>
  <link:definitionLink xlink:role="http://www.boh.com/role/DerivativeFinancialInstrumentsScheduleoftheNotionalAmountandFairValueoftheDerivativeFinancialInstrumentsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeLineItems_01a087ea-1b02-7f08-b29b-79950f1cb22e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeTable_01a087ea-1b02-785e-a2c5-b80e512b4b62" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DerivativeLineItems_01a087ea-1b02-7f08-b29b-79950f1cb22e" xlink:to="loc_us-gaap_DerivativeTable_01a087ea-1b02-785e-a2c5-b80e512b4b62" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentRiskAxis_01a087ea-1b02-7aae-9f78-1612a02404b5" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeInstrumentRiskAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DerivativeTable_01a087ea-1b02-785e-a2c5-b80e512b4b62" xlink:to="loc_us-gaap_DerivativeInstrumentRiskAxis_01a087ea-1b02-7aae-9f78-1612a02404b5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_01a087ea-1b02-7aae-9f78-1612a02404b5_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_01a087ea-1b02-7aae-9f78-1612a02404b5" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_01a087ea-1b02-7aae-9f78-1612a02404b5_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_01a087ea-1b02-7437-89b5-44d89d31b87e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_01a087ea-1b02-7aae-9f78-1612a02404b5" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_01a087ea-1b02-7437-89b5-44d89d31b87e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestRateSwapMember_01a087ea-1b02-713f-938a-7d7a3196823f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InterestRateSwapMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_01a087ea-1b02-7437-89b5-44d89d31b87e" xlink:to="loc_us-gaap_InterestRateSwapMember_01a087ea-1b02-713f-938a-7d7a3196823f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestRateLockCommitmentsMember_01a087ea-1b02-75b1-a742-69654439e7cf" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InterestRateLockCommitmentsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_01a087ea-1b02-7437-89b5-44d89d31b87e" xlink:to="loc_us-gaap_InterestRateLockCommitmentsMember_01a087ea-1b02-75b1-a742-69654439e7cf" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ForwardContractsMember_01a087ea-1b02-795f-b9cb-8b1feba24f4f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ForwardContractsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_01a087ea-1b02-7437-89b5-44d89d31b87e" xlink:to="loc_us-gaap_ForwardContractsMember_01a087ea-1b02-795f-b9cb-8b1feba24f4f" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_boh_ReceiveFixedOrPayVariableSwapMember_01a087ea-1b02-74c0-9e65-ce2139c5af6c" xlink:href="boh-20260930.xsd#boh_ReceiveFixedOrPayVariableSwapMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_01a087ea-1b02-7437-89b5-44d89d31b87e" xlink:to="loc_boh_ReceiveFixedOrPayVariableSwapMember_01a087ea-1b02-74c0-9e65-ce2139c5af6c" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_boh_PayFixedOrReceiveVariableSwapMember_01a087ea-1b02-72eb-a716-1c0afecd59d3" xlink:href="boh-20260930.xsd#boh_PayFixedOrReceiveVariableSwapMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_01a087ea-1b02-7437-89b5-44d89d31b87e" xlink:to="loc_boh_PayFixedOrReceiveVariableSwapMember_01a087ea-1b02-72eb-a716-1c0afecd59d3" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_boh_ForeignExchangeSwapsMember_01a087ea-1b02-71d1-a119-90ceb76d32ec" xlink:href="boh-20260930.xsd#boh_ForeignExchangeSwapsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_01a087ea-1b02-7437-89b5-44d89d31b87e" xlink:to="loc_boh_ForeignExchangeSwapsMember_01a087ea-1b02-71d1-a119-90ceb76d32ec" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_boh_VisaConversionRateSwapAgreementMember_01a087ea-1b02-7192-bada-ebe04819a943" xlink:href="boh-20260930.xsd#boh_VisaConversionRateSwapAgreementMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_01a087ea-1b02-7437-89b5-44d89d31b87e" xlink:to="loc_boh_VisaConversionRateSwapAgreementMember_01a087ea-1b02-7192-bada-ebe04819a943" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_boh_MakewholeAgreementsMember_01a087ea-1b02-7911-852a-3de9f124d166" xlink:href="boh-20260930.xsd#boh_MakewholeAgreementsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_01a087ea-1b02-7437-89b5-44d89d31b87e" xlink:to="loc_boh_MakewholeAgreementsMember_01a087ea-1b02-7911-852a-3de9f124d166" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_boh_ForwardSwapMember_01a087ea-1b02-7b0c-80b7-bee6d714d520" xlink:href="boh-20260930.xsd#boh_ForwardSwapMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_01a087ea-1b02-7437-89b5-44d89d31b87e" xlink:to="loc_boh_ForwardSwapMember_01a087ea-1b02-7b0c-80b7-bee6d714d520" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingDesignationAxis_01a087ea-1b02-76e1-8b2b-0259b85aa78a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_HedgingDesignationAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DerivativeTable_01a087ea-1b02-785e-a2c5-b80e512b4b62" xlink:to="loc_us-gaap_HedgingDesignationAxis_01a087ea-1b02-76e1-8b2b-0259b85aa78a" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingDesignationDomain_01a087ea-1b02-76e1-8b2b-0259b85aa78a_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_HedgingDesignationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_HedgingDesignationAxis_01a087ea-1b02-76e1-8b2b-0259b85aa78a" xlink:to="loc_us-gaap_HedgingDesignationDomain_01a087ea-1b02-76e1-8b2b-0259b85aa78a_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingDesignationDomain_01a087ea-1b02-7b8a-875f-83549138179e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_HedgingDesignationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_HedgingDesignationAxis_01a087ea-1b02-76e1-8b2b-0259b85aa78a" xlink:to="loc_us-gaap_HedgingDesignationDomain_01a087ea-1b02-7b8a-875f-83549138179e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DesignatedAsHedgingInstrumentMember_01a087ea-1b02-78a3-9581-0025890d7b74" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DesignatedAsHedgingInstrumentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_HedgingDesignationDomain_01a087ea-1b02-7b8a-875f-83549138179e" xlink:to="loc_us-gaap_DesignatedAsHedgingInstrumentMember_01a087ea-1b02-78a3-9581-0025890d7b74" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NondesignatedMember_01a087ea-1b02-7ae1-8373-a747a216ba57" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NondesignatedMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_HedgingDesignationDomain_01a087ea-1b02-7b8a-875f-83549138179e" xlink:to="loc_us-gaap_NondesignatedMember_01a087ea-1b02-7ae1-8373-a747a216ba57" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeNotionalAmount_01a087ea-1b02-738f-ba83-9bd43e5f68dd" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeNotionalAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeLineItems_01a087ea-1b02-7f08-b29b-79950f1cb22e" xlink:to="loc_us-gaap_DerivativeNotionalAmount_01a087ea-1b02-738f-ba83-9bd43e5f68dd" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeFairValueOfDerivativeNet_01a087ea-1b02-7a71-b578-66105abdca9c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeFairValueOfDerivativeNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeLineItems_01a087ea-1b02-7f08-b29b-79950f1cb22e" xlink:to="loc_us-gaap_DerivativeFairValueOfDerivativeNet_01a087ea-1b02-7a71-b578-66105abdca9c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsLiabilityAtFairValue_01a087ea-1b02-750e-84c1-21b91e3db948" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsLiabilityAtFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeLineItems_01a087ea-1b02-7f08-b29b-79950f1cb22e" xlink:to="loc_us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsLiabilityAtFairValue_01a087ea-1b02-750e-84c1-21b91e3db948" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.boh.com/role/DerivativeFinancialInstrumentsDerivativeFinancialInstrumentstheirFairValuesandBalanceSheetLocationDetails" xlink:type="simple" xlink:href="boh-20260930.xsd#DerivativeFinancialInstrumentsDerivativeFinancialInstrumentstheirFairValuesandBalanceSheetLocationDetails"/>
  <link:definitionLink xlink:role="http://www.boh.com/role/DerivativeFinancialInstrumentsDerivativeFinancialInstrumentstheirFairValuesandBalanceSheetLocationDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativesFairValueLineItems_01a087ea-1b02-7155-bbd3-9ae7771a3882" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativesFairValueLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable_01a087ea-1b02-77ae-bd41-556c0105384a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DerivativesFairValueLineItems_01a087ea-1b02-7155-bbd3-9ae7771a3882" xlink:to="loc_us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable_01a087ea-1b02-77ae-bd41-556c0105384a" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentRiskAxis_01a087ea-1b02-713a-bbb4-609ec091c4ee" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeInstrumentRiskAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable_01a087ea-1b02-77ae-bd41-556c0105384a" xlink:to="loc_us-gaap_DerivativeInstrumentRiskAxis_01a087ea-1b02-713a-bbb4-609ec091c4ee" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_01a087ea-1b02-713a-bbb4-609ec091c4ee_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_01a087ea-1b02-713a-bbb4-609ec091c4ee" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_01a087ea-1b02-713a-bbb4-609ec091c4ee_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_01a087ea-1b02-73e6-9852-e4ffe5be8ab1" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_01a087ea-1b02-713a-bbb4-609ec091c4ee" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_01a087ea-1b02-73e6-9852-e4ffe5be8ab1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestRateSwapMember_01a087ea-1b02-7b1c-8cbc-3b1b5afd9260" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InterestRateSwapMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_01a087ea-1b02-73e6-9852-e4ffe5be8ab1" xlink:to="loc_us-gaap_InterestRateSwapMember_01a087ea-1b02-7b1c-8cbc-3b1b5afd9260" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestRateLockCommitmentsMember_01a087ea-1b02-7e37-9e7a-a235d390c508" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InterestRateLockCommitmentsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_01a087ea-1b02-73e6-9852-e4ffe5be8ab1" xlink:to="loc_us-gaap_InterestRateLockCommitmentsMember_01a087ea-1b02-7e37-9e7a-a235d390c508" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ForwardContractsMember_01a087ea-1b02-72e4-8d5b-24e8304419c6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ForwardContractsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_01a087ea-1b02-73e6-9852-e4ffe5be8ab1" xlink:to="loc_us-gaap_ForwardContractsMember_01a087ea-1b02-72e4-8d5b-24e8304419c6" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_boh_ForeignExchangeSwapsMember_01a087ea-1b02-7ce1-b3cc-d28a601495f4" xlink:href="boh-20260930.xsd#boh_ForeignExchangeSwapsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_01a087ea-1b02-73e6-9852-e4ffe5be8ab1" xlink:to="loc_boh_ForeignExchangeSwapsMember_01a087ea-1b02-7ce1-b3cc-d28a601495f4" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingDesignationAxis_01a087ea-1b02-76dc-8ab1-548a2eeaffa7" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_HedgingDesignationAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable_01a087ea-1b02-77ae-bd41-556c0105384a" xlink:to="loc_us-gaap_HedgingDesignationAxis_01a087ea-1b02-76dc-8ab1-548a2eeaffa7" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingDesignationDomain_01a087ea-1b02-76dc-8ab1-548a2eeaffa7_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_HedgingDesignationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_HedgingDesignationAxis_01a087ea-1b02-76dc-8ab1-548a2eeaffa7" xlink:to="loc_us-gaap_HedgingDesignationDomain_01a087ea-1b02-76dc-8ab1-548a2eeaffa7_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingDesignationDomain_01a087ea-1b02-77a1-92f7-a269c344403c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_HedgingDesignationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_HedgingDesignationAxis_01a087ea-1b02-76dc-8ab1-548a2eeaffa7" xlink:to="loc_us-gaap_HedgingDesignationDomain_01a087ea-1b02-77a1-92f7-a269c344403c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DesignatedAsHedgingInstrumentMember_01a087ea-1b02-7135-8450-147318fd0730" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DesignatedAsHedgingInstrumentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_HedgingDesignationDomain_01a087ea-1b02-77a1-92f7-a269c344403c" xlink:to="loc_us-gaap_DesignatedAsHedgingInstrumentMember_01a087ea-1b02-7135-8450-147318fd0730" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NondesignatedMember_01a087ea-1b02-786e-ae09-14d752ae2c37" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NondesignatedMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_HedgingDesignationDomain_01a087ea-1b02-77a1-92f7-a269c344403c" xlink:to="loc_us-gaap_NondesignatedMember_01a087ea-1b02-786e-ae09-14d752ae2c37" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeAssets_01a087ea-1b02-7cc9-85d6-3b85e9545e81" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativesFairValueLineItems_01a087ea-1b02-7155-bbd3-9ae7771a3882" xlink:to="loc_us-gaap_DerivativeAssets_01a087ea-1b02-7cc9-85d6-3b85e9545e81" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeLiabilities_01a087ea-1b02-7ce0-a598-54a2498b4d2f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativesFairValueLineItems_01a087ea-1b02-7155-bbd3-9ae7771a3882" xlink:to="loc_us-gaap_DerivativeLiabilities_01a087ea-1b02-7ce0-a598-54a2498b4d2f" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.boh.com/role/DerivativeFinancialInstrumentsAdditionalInformationDetails" xlink:type="simple" xlink:href="boh-20260930.xsd#DerivativeFinancialInstrumentsAdditionalInformationDetails"/>
  <link:definitionLink xlink:role="http://www.boh.com/role/DerivativeFinancialInstrumentsAdditionalInformationDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeLineItems_01a087ea-1b02-7054-9f6c-4ea445b071a6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeTable_01a087ea-1b02-7fbc-8bfb-75432236c711" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DerivativeLineItems_01a087ea-1b02-7054-9f6c-4ea445b071a6" xlink:to="loc_us-gaap_DerivativeTable_01a087ea-1b02-7fbc-8bfb-75432236c711" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentRiskAxis_01a087ea-1b02-738d-94b9-bc89825ca14c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeInstrumentRiskAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DerivativeTable_01a087ea-1b02-7fbc-8bfb-75432236c711" xlink:to="loc_us-gaap_DerivativeInstrumentRiskAxis_01a087ea-1b02-738d-94b9-bc89825ca14c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_01a087ea-1b02-738d-94b9-bc89825ca14c_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_01a087ea-1b02-738d-94b9-bc89825ca14c" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_01a087ea-1b02-738d-94b9-bc89825ca14c_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_01a087ea-1b02-7b01-9af0-7c8a7798f739" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_01a087ea-1b02-738d-94b9-bc89825ca14c" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_01a087ea-1b02-7b01-9af0-7c8a7798f739" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestRateSwapMember_01a087ea-1b02-7323-8352-dfa410885553" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InterestRateSwapMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_01a087ea-1b02-7b01-9af0-7c8a7798f739" xlink:to="loc_us-gaap_InterestRateSwapMember_01a087ea-1b02-7323-8352-dfa410885553" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_boh_VisaClassBRestrictedSecuritiesMember_01a087ea-1b02-7723-bfa3-f4d1f51d0790" xlink:href="boh-20260930.xsd#boh_VisaClassBRestrictedSecuritiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_01a087ea-1b02-7b01-9af0-7c8a7798f739" xlink:to="loc_boh_VisaClassBRestrictedSecuritiesMember_01a087ea-1b02-7723-bfa3-f4d1f51d0790" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_boh_MakewholeAgreementsMember_01a087ea-1b02-726e-82cf-74bbcb0f0596" xlink:href="boh-20260930.xsd#boh_MakewholeAgreementsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_01a087ea-1b02-7b01-9af0-7c8a7798f739" xlink:to="loc_boh_MakewholeAgreementsMember_01a087ea-1b02-726e-82cf-74bbcb0f0596" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_boh_NumberOfDerivativesTerminated_01a087ea-1b02-7226-a55c-8b68a3479dd4" xlink:href="boh-20260930.xsd#boh_NumberOfDerivativesTerminated"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeLineItems_01a087ea-1b02-7054-9f6c-4ea445b071a6" xlink:to="loc_boh_NumberOfDerivativesTerminated_01a087ea-1b02-7226-a55c-8b68a3479dd4" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeNotionalAmount_01a087ea-1b02-7b7b-ac5f-f90742911eb9" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeNotionalAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeLineItems_01a087ea-1b02-7054-9f6c-4ea445b071a6" xlink:to="loc_us-gaap_DerivativeNotionalAmount_01a087ea-1b02-7b7b-ac5f-f90742911eb9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeLossOnDerivative_01a087ea-1b02-7dee-baee-5a09fdb27516" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeLossOnDerivative"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeLineItems_01a087ea-1b02-7054-9f6c-4ea445b071a6" xlink:to="loc_us-gaap_DerivativeLossOnDerivative_01a087ea-1b02-7dee-baee-5a09fdb27516" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_boh_DeferredDerivativeLoss_01a087ea-1b02-7826-ab04-07bde7e5c39b" xlink:href="boh-20260930.xsd#boh_DeferredDerivativeLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeLineItems_01a087ea-1b02-7054-9f6c-4ea445b071a6" xlink:to="loc_boh_DeferredDerivativeLoss_01a087ea-1b02-7826-ab04-07bde7e5c39b" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AmortizationOfDeferredCharges_01a087ea-1b02-7df1-8b49-e30a72369f9e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AmortizationOfDeferredCharges"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeLineItems_01a087ea-1b02-7054-9f6c-4ea445b071a6" xlink:to="loc_us-gaap_AmortizationOfDeferredCharges_01a087ea-1b02-7df1-8b49-e30a72369f9e" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_boh_DerivativeNetAssetPositionAggregateFairValue_01a087ea-1b02-7863-a75e-fccd3779a4d5" xlink:href="boh-20260930.xsd#boh_DerivativeNetAssetPositionAggregateFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeLineItems_01a087ea-1b02-7054-9f6c-4ea445b071a6" xlink:to="loc_boh_DerivativeNetAssetPositionAggregateFairValue_01a087ea-1b02-7863-a75e-fccd3779a4d5" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsLiabilityAtFairValue_01a087ea-1b02-721b-ae96-e2b220b5cf85" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsLiabilityAtFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeLineItems_01a087ea-1b02-7054-9f6c-4ea445b071a6" xlink:to="loc_us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsLiabilityAtFairValue_01a087ea-1b02-721b-ae96-e2b220b5cf85" xlink:type="arc" order="6"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.boh.com/role/DerivativeFinancialInstrumentsDerivativeFinancialInstrumentsandtheAmountandLocationoftheNetGainsorLossesRecognizedintheStatementsofIncomeDetails" xlink:type="simple" xlink:href="boh-20260930.xsd#DerivativeFinancialInstrumentsDerivativeFinancialInstrumentsandtheAmountandLocationoftheNetGainsorLossesRecognizedintheStatementsofIncomeDetails"/>
  <link:definitionLink xlink:role="http://www.boh.com/role/DerivativeFinancialInstrumentsDerivativeFinancialInstrumentsandtheAmountandLocationoftheNetGainsorLossesRecognizedintheStatementsofIncomeDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentsGainLossLineItems_01a087ea-1b02-7a2d-a8f3-a268285c81ef" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeInstrumentsGainLossLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable_01a087ea-1b02-7fd1-8ff6-3712914db75c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossLineItems_01a087ea-1b02-7a2d-a8f3-a268285c81ef" xlink:to="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable_01a087ea-1b02-7fd1-8ff6-3712914db75c" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingDesignationAxis_01a087ea-1b02-741b-9de9-0f6a5d5f499d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_HedgingDesignationAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable_01a087ea-1b02-7fd1-8ff6-3712914db75c" xlink:to="loc_us-gaap_HedgingDesignationAxis_01a087ea-1b02-741b-9de9-0f6a5d5f499d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingDesignationDomain_01a087ea-1b02-741b-9de9-0f6a5d5f499d_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_HedgingDesignationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_HedgingDesignationAxis_01a087ea-1b02-741b-9de9-0f6a5d5f499d" xlink:to="loc_us-gaap_HedgingDesignationDomain_01a087ea-1b02-741b-9de9-0f6a5d5f499d_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingDesignationDomain_01a087ea-1b02-7dd1-a36b-352f8065250f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_HedgingDesignationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_HedgingDesignationAxis_01a087ea-1b02-741b-9de9-0f6a5d5f499d" xlink:to="loc_us-gaap_HedgingDesignationDomain_01a087ea-1b02-7dd1-a36b-352f8065250f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DesignatedAsHedgingInstrumentMember_01a087ea-1b02-7f63-976d-c1b77500066a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DesignatedAsHedgingInstrumentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_HedgingDesignationDomain_01a087ea-1b02-7dd1-a36b-352f8065250f" xlink:to="loc_us-gaap_DesignatedAsHedgingInstrumentMember_01a087ea-1b02-7f63-976d-c1b77500066a" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NondesignatedMember_01a087ea-1b02-7a2f-af8d-21e690b4d8de" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NondesignatedMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_HedgingDesignationDomain_01a087ea-1b02-7dd1-a36b-352f8065250f" xlink:to="loc_us-gaap_NondesignatedMember_01a087ea-1b02-7a2f-af8d-21e690b4d8de" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementOfIncomeLocationBalanceAxis_01a087ea-1b02-71dc-a6a8-f87bdeaa861e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementOfIncomeLocationBalanceAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable_01a087ea-1b02-7fd1-8ff6-3712914db75c" xlink:to="loc_us-gaap_StatementOfIncomeLocationBalanceAxis_01a087ea-1b02-71dc-a6a8-f87bdeaa861e" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentRiskAxis_01a087ea-1b02-7675-95c8-6f0711256482" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeInstrumentRiskAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable_01a087ea-1b02-7fd1-8ff6-3712914db75c" xlink:to="loc_us-gaap_DerivativeInstrumentRiskAxis_01a087ea-1b02-7675-95c8-6f0711256482" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_01a087ea-1b02-7675-95c8-6f0711256482_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_01a087ea-1b02-7675-95c8-6f0711256482" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_01a087ea-1b02-7675-95c8-6f0711256482_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_01a087ea-1b02-719d-a7c4-6e0de6775b69" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_01a087ea-1b02-7675-95c8-6f0711256482" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_01a087ea-1b02-719d-a7c4-6e0de6775b69" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestRateLockCommitmentsMember_01a087ea-1b02-7280-a21a-511912900c9d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InterestRateLockCommitmentsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_01a087ea-1b02-719d-a7c4-6e0de6775b69" xlink:to="loc_us-gaap_InterestRateLockCommitmentsMember_01a087ea-1b02-7280-a21a-511912900c9d" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ForwardContractsMember_01a087ea-1b02-78a0-8116-5527aa0d410c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ForwardContractsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_01a087ea-1b02-719d-a7c4-6e0de6775b69" xlink:to="loc_us-gaap_ForwardContractsMember_01a087ea-1b02-78a0-8116-5527aa0d410c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestRateSwapMember_01a087ea-1b02-79d6-86f8-aa4afbd08340" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InterestRateSwapMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_01a087ea-1b02-719d-a7c4-6e0de6775b69" xlink:to="loc_us-gaap_InterestRateSwapMember_01a087ea-1b02-79d6-86f8-aa4afbd08340" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_boh_VisaConversionRateSwapAgreementMember_01a087ea-1b02-7d90-bc8e-a39e0cd28f1b" xlink:href="boh-20260930.xsd#boh_VisaConversionRateSwapAgreementMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_01a087ea-1b02-719d-a7c4-6e0de6775b69" xlink:to="loc_boh_VisaConversionRateSwapAgreementMember_01a087ea-1b02-7d90-bc8e-a39e0cd28f1b" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_boh_NetCashSettlementsMember_01a087ea-1b02-77cd-b254-ab19c351c525" xlink:href="boh-20260930.xsd#boh_NetCashSettlementsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_01a087ea-1b02-719d-a7c4-6e0de6775b69" xlink:to="loc_boh_NetCashSettlementsMember_01a087ea-1b02-77cd-b254-ab19c351c525" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_boh_ForeignExchangeSwapsMember_01a087ea-1b02-70e8-b673-9893e8083671" xlink:href="boh-20260930.xsd#boh_ForeignExchangeSwapsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_01a087ea-1b02-719d-a7c4-6e0de6775b69" xlink:to="loc_boh_ForeignExchangeSwapsMember_01a087ea-1b02-70e8-b673-9893e8083671" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeGainLossOnDerivativeNet_01a087ea-1b02-7ed3-afca-1c32e8c8bf3e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeGainLossOnDerivativeNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossLineItems_01a087ea-1b02-7a2d-a8f3-a268285c81ef" xlink:to="loc_us-gaap_DerivativeGainLossOnDerivativeNet_01a087ea-1b02-7ed3-afca-1c32e8c8bf3e" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeGainLossStatementOfIncomeOrComprehensiveIncomeExtensibleEnumeration_01a087ea-1b02-7e68-a067-6cc71a411bcb" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeGainLossStatementOfIncomeOrComprehensiveIncomeExtensibleEnumeration"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeGainLossOnDerivativeNet_01a087ea-1b02-7ed3-afca-1c32e8c8bf3e" xlink:to="loc_us-gaap_DerivativeGainLossStatementOfIncomeOrComprehensiveIncomeExtensibleEnumeration_01a087ea-1b02-7e68-a067-6cc71a411bcb" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.boh.com/role/DerivativeFinancialInstrumentsDerivativeFinancialInstrumentsandtheAmountandLocationoftheNetGainsorLossesRecognizedintheStatementsofIncomeDetails_1" xlink:type="simple" xlink:href="boh-20260930.xsd#DerivativeFinancialInstrumentsDerivativeFinancialInstrumentsandtheAmountandLocationoftheNetGainsorLossesRecognizedintheStatementsofIncomeDetails_1"/>
  <link:definitionLink xlink:role="http://www.boh.com/role/DerivativeFinancialInstrumentsDerivativeFinancialInstrumentsandtheAmountandLocationoftheNetGainsorLossesRecognizedintheStatementsofIncomeDetails_1" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentsGainLossLineItems_01a087ea-1b02-7a2d-a8f3-a268285c81ef" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeInstrumentsGainLossLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable_01a087ea-1b02-7fd1-8ff6-3712914db75c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossLineItems_01a087ea-1b02-7a2d-a8f3-a268285c81ef" xlink:to="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable_01a087ea-1b02-7fd1-8ff6-3712914db75c" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingDesignationAxis_01a087ea-1b02-741b-9de9-0f6a5d5f499d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_HedgingDesignationAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable_01a087ea-1b02-7fd1-8ff6-3712914db75c" xlink:to="loc_us-gaap_HedgingDesignationAxis_01a087ea-1b02-741b-9de9-0f6a5d5f499d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingDesignationDomain_01a087ea-1b02-741b-9de9-0f6a5d5f499d_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_HedgingDesignationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_HedgingDesignationAxis_01a087ea-1b02-741b-9de9-0f6a5d5f499d" xlink:to="loc_us-gaap_HedgingDesignationDomain_01a087ea-1b02-741b-9de9-0f6a5d5f499d_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingDesignationDomain_01a087ea-1b02-7dd1-a36b-352f8065250f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_HedgingDesignationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_HedgingDesignationAxis_01a087ea-1b02-741b-9de9-0f6a5d5f499d" xlink:to="loc_us-gaap_HedgingDesignationDomain_01a087ea-1b02-7dd1-a36b-352f8065250f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DesignatedAsHedgingInstrumentMember_01a087ea-1b02-7f63-976d-c1b77500066a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DesignatedAsHedgingInstrumentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_HedgingDesignationDomain_01a087ea-1b02-7dd1-a36b-352f8065250f" xlink:to="loc_us-gaap_DesignatedAsHedgingInstrumentMember_01a087ea-1b02-7f63-976d-c1b77500066a" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NondesignatedMember_01a087ea-1b02-7a2f-af8d-21e690b4d8de" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NondesignatedMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_HedgingDesignationDomain_01a087ea-1b02-7dd1-a36b-352f8065250f" xlink:to="loc_us-gaap_NondesignatedMember_01a087ea-1b02-7a2f-af8d-21e690b4d8de" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentRiskAxis_01a087ea-1b02-7675-95c8-6f0711256482" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeInstrumentRiskAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable_01a087ea-1b02-7fd1-8ff6-3712914db75c" xlink:to="loc_us-gaap_DerivativeInstrumentRiskAxis_01a087ea-1b02-7675-95c8-6f0711256482" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_01a087ea-1b02-7675-95c8-6f0711256482_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_01a087ea-1b02-7675-95c8-6f0711256482" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_01a087ea-1b02-7675-95c8-6f0711256482_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_01a087ea-1b02-719d-a7c4-6e0de6775b69" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_01a087ea-1b02-7675-95c8-6f0711256482" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_01a087ea-1b02-719d-a7c4-6e0de6775b69" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestRateLockCommitmentsMember_01a087ea-1b02-7280-a21a-511912900c9d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InterestRateLockCommitmentsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_01a087ea-1b02-719d-a7c4-6e0de6775b69" xlink:to="loc_us-gaap_InterestRateLockCommitmentsMember_01a087ea-1b02-7280-a21a-511912900c9d" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ForwardContractsMember_01a087ea-1b02-78a0-8116-5527aa0d410c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ForwardContractsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_01a087ea-1b02-719d-a7c4-6e0de6775b69" xlink:to="loc_us-gaap_ForwardContractsMember_01a087ea-1b02-78a0-8116-5527aa0d410c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestRateSwapMember_01a087ea-1b02-79d6-86f8-aa4afbd08340" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InterestRateSwapMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_01a087ea-1b02-719d-a7c4-6e0de6775b69" xlink:to="loc_us-gaap_InterestRateSwapMember_01a087ea-1b02-79d6-86f8-aa4afbd08340" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_boh_VisaConversionRateSwapAgreementMember_01a087ea-1b02-7d90-bc8e-a39e0cd28f1b" xlink:href="boh-20260930.xsd#boh_VisaConversionRateSwapAgreementMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_01a087ea-1b02-719d-a7c4-6e0de6775b69" xlink:to="loc_boh_VisaConversionRateSwapAgreementMember_01a087ea-1b02-7d90-bc8e-a39e0cd28f1b" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_boh_NetCashSettlementsMember_01a087ea-1b02-77cd-b254-ab19c351c525" xlink:href="boh-20260930.xsd#boh_NetCashSettlementsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_01a087ea-1b02-719d-a7c4-6e0de6775b69" xlink:to="loc_boh_NetCashSettlementsMember_01a087ea-1b02-77cd-b254-ab19c351c525" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_boh_ForeignExchangeSwapsMember_01a087ea-1b02-70e8-b673-9893e8083671" xlink:href="boh-20260930.xsd#boh_ForeignExchangeSwapsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_01a087ea-1b02-719d-a7c4-6e0de6775b69" xlink:to="loc_boh_ForeignExchangeSwapsMember_01a087ea-1b02-70e8-b673-9893e8083671" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeGainLossOnDerivativeNet_01a087ea-1b02-7ed3-afca-1c32e8c8bf3e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeGainLossOnDerivativeNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossLineItems_01a087ea-1b02-7a2d-a8f3-a268285c81ef" xlink:to="loc_us-gaap_DerivativeGainLossOnDerivativeNet_01a087ea-1b02-7ed3-afca-1c32e8c8bf3e" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeGainLossStatementOfIncomeOrComprehensiveIncomeExtensibleEnumeration_01a087ea-1b02-7e68-a067-6cc71a411bcb" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeGainLossStatementOfIncomeOrComprehensiveIncomeExtensibleEnumeration"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeGainLossOnDerivativeNet_01a087ea-1b02-7ed3-afca-1c32e8c8bf3e" xlink:to="loc_us-gaap_DerivativeGainLossStatementOfIncomeOrComprehensiveIncomeExtensibleEnumeration_01a087ea-1b02-7e68-a067-6cc71a411bcb" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.boh.com/role/DerivativeFinancialInstrumentsScheduleofDerivativeInstrumentsinStatementofFinancialPositionRelatedtoCumulativeBasisAdjustmentforFairValueHedgesDetails" xlink:type="simple" xlink:href="boh-20260930.xsd#DerivativeFinancialInstrumentsScheduleofDerivativeInstrumentsinStatementofFinancialPositionRelatedtoCumulativeBasisAdjustmentforFairValueHedgesDetails"/>
  <link:definitionLink xlink:role="http://www.boh.com/role/DerivativeFinancialInstrumentsScheduleofDerivativeInstrumentsinStatementofFinancialPositionRelatedtoCumulativeBasisAdjustmentforFairValueHedgesDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_boh_DerivativeInstrumentsFairValueHedgesLineItems_01a087ea-1b02-7996-b96a-8e524f310e89" xlink:href="boh-20260930.xsd#boh_DerivativeInstrumentsFairValueHedgesLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_boh_DerivativeInstrumentsByHedgeDesignationTable_01a087ea-1b02-7456-9c1f-6d87b5cedd49" xlink:href="boh-20260930.xsd#boh_DerivativeInstrumentsByHedgeDesignationTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_boh_DerivativeInstrumentsFairValueHedgesLineItems_01a087ea-1b02-7996-b96a-8e524f310e89" xlink:to="loc_boh_DerivativeInstrumentsByHedgeDesignationTable_01a087ea-1b02-7456-9c1f-6d87b5cedd49" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByAssetClassAxis_01a087ea-1b02-71d0-855a-34e141654cc8" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueByAssetClassAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_boh_DerivativeInstrumentsByHedgeDesignationTable_01a087ea-1b02-7456-9c1f-6d87b5cedd49" xlink:to="loc_us-gaap_FairValueByAssetClassAxis_01a087ea-1b02-71d0-855a-34e141654cc8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain_01a087ea-1b02-71d0-855a-34e141654cc8_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByAssetClassAxis_01a087ea-1b02-71d0-855a-34e141654cc8" xlink:to="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain_01a087ea-1b02-71d0-855a-34e141654cc8_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain_01a087ea-1b02-7e63-9fef-a78c69f535b7" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByAssetClassAxis_01a087ea-1b02-71d0-855a-34e141654cc8" xlink:to="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain_01a087ea-1b02-7e63-9fef-a78c69f535b7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesMember_01a087ea-1b02-76f1-b9f9-876e43dd6805" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtSecuritiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain_01a087ea-1b02-7e63-9fef-a78c69f535b7" xlink:to="loc_us-gaap_DebtSecuritiesMember_01a087ea-1b02-76f1-b9f9-876e43dd6805" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_boh_LoansAndLeasesReceivableMember_01a087ea-1b02-7f69-af14-1ce63cb47127" xlink:href="boh-20260930.xsd#boh_LoansAndLeasesReceivableMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain_01a087ea-1b02-7e63-9fef-a78c69f535b7" xlink:to="loc_boh_LoansAndLeasesReceivableMember_01a087ea-1b02-7f69-af14-1ce63cb47127" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgedAssetFairValueHedge_01a087ea-1b02-70db-a5de-e4fdffe2422a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_HedgedAssetFairValueHedge"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_boh_DerivativeInstrumentsFairValueHedgesLineItems_01a087ea-1b02-7996-b96a-8e524f310e89" xlink:to="loc_us-gaap_HedgedAssetFairValueHedge_01a087ea-1b02-70db-a5de-e4fdffe2422a" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgedAssetFairValueHedgeCumulativeIncreaseDecrease_01a087ea-1b02-7948-84de-31260500aa93" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_HedgedAssetFairValueHedgeCumulativeIncreaseDecrease"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_boh_DerivativeInstrumentsFairValueHedgesLineItems_01a087ea-1b02-7996-b96a-8e524f310e89" xlink:to="loc_us-gaap_HedgedAssetFairValueHedgeCumulativeIncreaseDecrease_01a087ea-1b02-7948-84de-31260500aa93" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgedAssetFairValueHedgeLastOfLayerAmount_01a087ea-1b02-76e8-8f86-bbc2b43f528b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_HedgedAssetFairValueHedgeLastOfLayerAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_boh_DerivativeInstrumentsFairValueHedgesLineItems_01a087ea-1b02-7996-b96a-8e524f310e89" xlink:to="loc_us-gaap_HedgedAssetFairValueHedgeLastOfLayerAmount_01a087ea-1b02-76e8-8f86-bbc2b43f528b" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PrepayableFinancialAssetClosedPortfolioLastOfLayerAmortizedCost_01a087ea-1b02-77cc-b74d-1abc553c548e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PrepayableFinancialAssetClosedPortfolioLastOfLayerAmortizedCost"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_boh_DerivativeInstrumentsFairValueHedgesLineItems_01a087ea-1b02-7996-b96a-8e524f310e89" xlink:to="loc_us-gaap_PrepayableFinancialAssetClosedPortfolioLastOfLayerAmortizedCost_01a087ea-1b02-77cc-b74d-1abc553c548e" xlink:type="arc" order="3"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.boh.com/role/CommitmentsandContingenciesCreditCommitmentsDetails" xlink:type="simple" xlink:href="boh-20260930.xsd#CommitmentsandContingenciesCreditCommitmentsDetails"/>
  <link:definitionLink xlink:role="http://www.boh.com/role/CommitmentsandContingenciesCreditCommitmentsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_boh_CreditCommitmentsLineItems_01a087ea-1b02-7807-a409-92638ca678d7" xlink:href="boh-20260930.xsd#boh_CreditCommitmentsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_boh_CreditCommitmentsTable_01a087ea-1b02-76af-a2e4-399f7809bbe9" xlink:href="boh-20260930.xsd#boh_CreditCommitmentsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_boh_CreditCommitmentsLineItems_01a087ea-1b02-7807-a409-92638ca678d7" xlink:to="loc_boh_CreditCommitmentsTable_01a087ea-1b02-76af-a2e4-399f7809bbe9" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancialInstrumentAxis_01a087ea-1b02-79b2-bb64-618bc6fdcc32" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancialInstrumentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_boh_CreditCommitmentsTable_01a087ea-1b02-76af-a2e4-399f7809bbe9" xlink:to="loc_us-gaap_FinancialInstrumentAxis_01a087ea-1b02-79b2-bb64-618bc6fdcc32" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_01a087ea-1b02-79b2-bb64-618bc6fdcc32_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FinancialInstrumentAxis_01a087ea-1b02-79b2-bb64-618bc6fdcc32" xlink:to="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_01a087ea-1b02-79b2-bb64-618bc6fdcc32_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_01a087ea-1b02-75d7-bfbb-576cac3c983e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FinancialInstrumentAxis_01a087ea-1b02-79b2-bb64-618bc6fdcc32" xlink:to="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_01a087ea-1b02-75d7-bfbb-576cac3c983e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommitmentsToExtendCreditMember_01a087ea-1b02-7ed1-b837-6d8bb580f682" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommitmentsToExtendCreditMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_01a087ea-1b02-75d7-bfbb-576cac3c983e" xlink:to="loc_us-gaap_CommitmentsToExtendCreditMember_01a087ea-1b02-7ed1-b837-6d8bb580f682" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityAxis_01a087ea-1b02-7c20-96eb-065e5cef5e6a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CreditFacilityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_boh_CreditCommitmentsTable_01a087ea-1b02-76af-a2e4-399f7809bbe9" xlink:to="loc_us-gaap_CreditFacilityAxis_01a087ea-1b02-7c20-96eb-065e5cef5e6a" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityDomain_01a087ea-1b02-7c20-96eb-065e5cef5e6a_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CreditFacilityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_CreditFacilityAxis_01a087ea-1b02-7c20-96eb-065e5cef5e6a" xlink:to="loc_us-gaap_CreditFacilityDomain_01a087ea-1b02-7c20-96eb-065e5cef5e6a_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityDomain_01a087ea-1b02-7d64-aff3-822eefb9b555" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CreditFacilityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_CreditFacilityAxis_01a087ea-1b02-7c20-96eb-065e5cef5e6a" xlink:to="loc_us-gaap_CreditFacilityDomain_01a087ea-1b02-7d64-aff3-822eefb9b555" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StandbyLettersOfCreditMember_01a087ea-1b02-718b-8ac8-2cfb704e09d4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StandbyLettersOfCreditMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CreditFacilityDomain_01a087ea-1b02-7d64-aff3-822eefb9b555" xlink:to="loc_us-gaap_StandbyLettersOfCreditMember_01a087ea-1b02-718b-8ac8-2cfb704e09d4" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LetterOfCreditMember_01a087ea-1b02-70c1-b95f-2d0d3bb64aef" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LetterOfCreditMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CreditFacilityDomain_01a087ea-1b02-7d64-aff3-822eefb9b555" xlink:to="loc_us-gaap_LetterOfCreditMember_01a087ea-1b02-70c1-b95f-2d0d3bb64aef" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueDisclosureOffbalanceSheetRisksFaceAmountLiability_01a087ea-1bab-78d6-8d0d-6e1d5b90dcb1" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueDisclosureOffbalanceSheetRisksFaceAmountLiability"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_boh_CreditCommitmentsLineItems_01a087ea-1b02-7807-a409-92638ca678d7" xlink:to="loc_us-gaap_FairValueDisclosureOffbalanceSheetRisksFaceAmountLiability_01a087ea-1bab-78d6-8d0d-6e1d5b90dcb1" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.boh.com/role/CommitmentsandContingenciesAdditionalInformationDetails" xlink:type="simple" xlink:href="boh-20260930.xsd#CommitmentsandContingenciesAdditionalInformationDetails"/>
  <link:definitionLink xlink:role="http://www.boh.com/role/CommitmentsandContingenciesAdditionalInformationDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_boh_CommitmentsAndContingenciesLineItems_01a087ea-1bab-7b51-ba06-6eb68de3a1f9" xlink:href="boh-20260930.xsd#boh_CommitmentsAndContingenciesLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_boh_CommitmentsAndContingenciesTable_01a087ea-1bab-7cc7-9f5a-83efe643fe9c" xlink:href="boh-20260930.xsd#boh_CommitmentsAndContingenciesTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_boh_CommitmentsAndContingenciesLineItems_01a087ea-1bab-7b51-ba06-6eb68de3a1f9" xlink:to="loc_boh_CommitmentsAndContingenciesTable_01a087ea-1bab-7cc7-9f5a-83efe643fe9c" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityAxis_01a087ea-1bab-7493-9fe7-d4b10b4e62d5" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CreditFacilityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_boh_CommitmentsAndContingenciesTable_01a087ea-1bab-7cc7-9f5a-83efe643fe9c" xlink:to="loc_us-gaap_CreditFacilityAxis_01a087ea-1bab-7493-9fe7-d4b10b4e62d5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityDomain_01a087ea-1bab-7493-9fe7-d4b10b4e62d5_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CreditFacilityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_CreditFacilityAxis_01a087ea-1bab-7493-9fe7-d4b10b4e62d5" xlink:to="loc_us-gaap_CreditFacilityDomain_01a087ea-1bab-7493-9fe7-d4b10b4e62d5_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityDomain_01a087ea-1bab-713f-8ede-245b73d68725" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CreditFacilityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_CreditFacilityAxis_01a087ea-1bab-7493-9fe7-d4b10b4e62d5" xlink:to="loc_us-gaap_CreditFacilityDomain_01a087ea-1bab-713f-8ede-245b73d68725" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StandbyLettersOfCreditMember_01a087ea-1bab-7131-a548-88fe46abb871" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StandbyLettersOfCreditMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CreditFacilityDomain_01a087ea-1bab-713f-8ede-245b73d68725" xlink:to="loc_us-gaap_StandbyLettersOfCreditMember_01a087ea-1bab-7131-a548-88fe46abb871" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_boh_StandbyAndCommercialLetteresOfCreditMember_01a087ea-1bab-7766-bad3-c180d34324e7" xlink:href="boh-20260930.xsd#boh_StandbyAndCommercialLetteresOfCreditMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CreditFacilityDomain_01a087ea-1bab-713f-8ede-245b73d68725" xlink:to="loc_boh_StandbyAndCommercialLetteresOfCreditMember_01a087ea-1bab-7766-bad3-c180d34324e7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_01a087ea-1bab-7577-9b11-d9f381631814" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_RangeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_boh_CommitmentsAndContingenciesTable_01a087ea-1bab-7cc7-9f5a-83efe643fe9c" xlink:to="loc_srt_RangeAxis_01a087ea-1bab-7577-9b11-d9f381631814" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_01a087ea-1bab-7577-9b11-d9f381631814_default" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_01a087ea-1bab-7577-9b11-d9f381631814" xlink:to="loc_srt_RangeMember_01a087ea-1bab-7577-9b11-d9f381631814_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_01a087ea-1bab-7bf0-828e-af2cd258671f" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_01a087ea-1bab-7577-9b11-d9f381631814" xlink:to="loc_srt_RangeMember_01a087ea-1bab-7bf0-828e-af2cd258671f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember_01a087ea-1bab-7d52-8d32-c1ceb08c3c2f" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_MinimumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_01a087ea-1bab-7bf0-828e-af2cd258671f" xlink:to="loc_srt_MinimumMember_01a087ea-1bab-7d52-8d32-c1ceb08c3c2f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_01a087ea-1bab-7b94-b3bf-1d0c96c0e902" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_MaximumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_01a087ea-1bab-7bf0-828e-af2cd258671f" xlink:to="loc_srt_MaximumMember_01a087ea-1bab-7b94-b3bf-1d0c96c0e902" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_boh_AssetsSecuredForStandbyLettersOfCredit_01a087ea-1bab-7144-97a0-08513da530ab" xlink:href="boh-20260930.xsd#boh_AssetsSecuredForStandbyLettersOfCredit"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_boh_CommitmentsAndContingenciesLineItems_01a087ea-1bab-7b51-ba06-6eb68de3a1f9" xlink:to="loc_boh_AssetsSecuredForStandbyLettersOfCredit_01a087ea-1bab-7144-97a0-08513da530ab" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_boh_StandbyAndCommercialLettersOfCreditRemainingTerm_01a087ea-1bab-7d3d-a08e-a99622f8cff0" xlink:href="boh-20260930.xsd#boh_StandbyAndCommercialLettersOfCreditRemainingTerm"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_boh_CommitmentsAndContingenciesLineItems_01a087ea-1bab-7b51-ba06-6eb68de3a1f9" xlink:to="loc_boh_StandbyAndCommercialLettersOfCreditRemainingTerm_01a087ea-1bab-7d3d-a08e-a99622f8cff0" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.boh.com/role/FairValueofAssetsandLiabilitiesAdditionalInformationDetails" xlink:type="simple" xlink:href="boh-20260930.xsd#FairValueofAssetsandLiabilitiesAdditionalInformationDetails"/>
  <link:definitionLink xlink:role="http://www.boh.com/role/FairValueofAssetsandLiabilitiesAdditionalInformationDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_01a087ea-1bab-7ce4-8716-762097031929" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_01a087ea-1bab-73f2-a974-d253ee18e618" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_01a087ea-1bab-7ce4-8716-762097031929" xlink:to="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_01a087ea-1bab-73f2-a974-d253ee18e618" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentRiskAxis_01a087ea-1bab-74bd-8105-29cb04a07e31" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeInstrumentRiskAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_01a087ea-1bab-73f2-a974-d253ee18e618" xlink:to="loc_us-gaap_DerivativeInstrumentRiskAxis_01a087ea-1bab-74bd-8105-29cb04a07e31" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_01a087ea-1bab-74bd-8105-29cb04a07e31_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_01a087ea-1bab-74bd-8105-29cb04a07e31" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_01a087ea-1bab-74bd-8105-29cb04a07e31_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_01a087ea-1bab-75f1-b006-63afccebd6cd" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_01a087ea-1bab-74bd-8105-29cb04a07e31" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_01a087ea-1bab-75f1-b006-63afccebd6cd" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_boh_VisaClassBRestrictedSecuritiesMember_01a087ea-1bab-70cc-bcec-a3cfe9b7c621" xlink:href="boh-20260930.xsd#boh_VisaClassBRestrictedSecuritiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_01a087ea-1bab-75f1-b006-63afccebd6cd" xlink:to="loc_boh_VisaClassBRestrictedSecuritiesMember_01a087ea-1bab-70cc-bcec-a3cfe9b7c621" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_boh_MakewholeAgreementsMember_01a087ea-1bab-7b16-9692-371ce81ebbee" xlink:href="boh-20260930.xsd#boh_MakewholeAgreementsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_01a087ea-1bab-75f1-b006-63afccebd6cd" xlink:to="loc_boh_MakewholeAgreementsMember_01a087ea-1bab-7b16-9692-371ce81ebbee" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsLiabilityAtFairValue_01a087ea-1bab-78a3-90be-8e28bf876bdd" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsLiabilityAtFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_01a087ea-1bab-7ce4-8716-762097031929" xlink:to="loc_us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsLiabilityAtFairValue_01a087ea-1bab-78a3-90be-8e28bf876bdd" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.boh.com/role/FairValueofAssetsandLiabilitiesBalancesofAssetsandLiabilitiesMeasuredatFairValueonRecurringBasisDetails" xlink:type="simple" xlink:href="boh-20260930.xsd#FairValueofAssetsandLiabilitiesBalancesofAssetsandLiabilitiesMeasuredatFairValueonRecurringBasisDetails"/>
  <link:definitionLink xlink:role="http://www.boh.com/role/FairValueofAssetsandLiabilitiesBalancesofAssetsandLiabilitiesMeasuredatFairValueonRecurringBasisDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_01a087ea-1bab-7d90-abc3-72c53586f8df" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_01a087ea-1bab-73c3-a21f-7caca6ec2157" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_01a087ea-1bab-7d90-abc3-72c53586f8df" xlink:to="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_01a087ea-1bab-73c3-a21f-7caca6ec2157" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_01a087ea-1bab-72ce-bd64-980512e9708b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueByFairValueHierarchyLevelAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_01a087ea-1bab-73c3-a21f-7caca6ec2157" xlink:to="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_01a087ea-1bab-72ce-bd64-980512e9708b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_01a087ea-1bab-72ce-bd64-980512e9708b_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_01a087ea-1bab-72ce-bd64-980512e9708b" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_01a087ea-1bab-72ce-bd64-980512e9708b_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_01a087ea-1bab-7338-b5d3-22e07b742803" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_01a087ea-1bab-72ce-bd64-980512e9708b" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_01a087ea-1bab-7338-b5d3-22e07b742803" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel1Member_01a087ea-1bab-7fe9-ae7f-e042135d6dc5" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueInputsLevel1Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_01a087ea-1bab-7338-b5d3-22e07b742803" xlink:to="loc_us-gaap_FairValueInputsLevel1Member_01a087ea-1bab-7fe9-ae7f-e042135d6dc5" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel2Member_01a087ea-1bab-7472-89b3-9fe00d4ef541" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueInputsLevel2Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_01a087ea-1bab-7338-b5d3-22e07b742803" xlink:to="loc_us-gaap_FairValueInputsLevel2Member_01a087ea-1bab-7472-89b3-9fe00d4ef541" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel3Member_01a087ea-1bab-7a0c-a19b-640b3927f0ed" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueInputsLevel3Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_01a087ea-1bab-7338-b5d3-22e07b742803" xlink:to="loc_us-gaap_FairValueInputsLevel3Member_01a087ea-1bab-7a0c-a19b-640b3927f0ed" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancialInstrumentAxis_01a087ea-1bab-7f5f-9d3a-cbae576f897c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancialInstrumentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_01a087ea-1bab-73c3-a21f-7caca6ec2157" xlink:to="loc_us-gaap_FinancialInstrumentAxis_01a087ea-1bab-7f5f-9d3a-cbae576f897c" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_01a087ea-1bab-7f5f-9d3a-cbae576f897c_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FinancialInstrumentAxis_01a087ea-1bab-7f5f-9d3a-cbae576f897c" xlink:to="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_01a087ea-1bab-7f5f-9d3a-cbae576f897c_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_01a087ea-1bab-7b02-9b90-c3af46b9ba96" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FinancialInstrumentAxis_01a087ea-1bab-7f5f-9d3a-cbae576f897c" xlink:to="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_01a087ea-1bab-7b02-9b90-c3af46b9ba96" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_boh_UsTreasuryAndGovernmentAgenciesMember_01a087ea-1bab-7c52-a9a6-8067a1fea6c6" xlink:href="boh-20260930.xsd#boh_UsTreasuryAndGovernmentAgenciesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_01a087ea-1bab-7b02-9b90-c3af46b9ba96" xlink:to="loc_boh_UsTreasuryAndGovernmentAgenciesMember_01a087ea-1bab-7c52-a9a6-8067a1fea6c6" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_USStatesAndPoliticalSubdivisionsMember_01a087ea-1bab-78a1-abd4-5a4213952f6c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_USStatesAndPoliticalSubdivisionsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_01a087ea-1bab-7b02-9b90-c3af46b9ba96" xlink:to="loc_us-gaap_USStatesAndPoliticalSubdivisionsMember_01a087ea-1bab-78a1-abd4-5a4213952f6c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_USGovernmentSponsoredEnterprisesDebtSecuritiesMember_01a087ea-1bab-74d8-a5c3-1d977039b41c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_USGovernmentSponsoredEnterprisesDebtSecuritiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_01a087ea-1bab-7b02-9b90-c3af46b9ba96" xlink:to="loc_us-gaap_USGovernmentSponsoredEnterprisesDebtSecuritiesMember_01a087ea-1bab-74d8-a5c3-1d977039b41c" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CorporateDebtSecuritiesMember_01a087ea-1bab-76cc-84f8-279bb588db25" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CorporateDebtSecuritiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_01a087ea-1bab-7b02-9b90-c3af46b9ba96" xlink:to="loc_us-gaap_CorporateDebtSecuritiesMember_01a087ea-1bab-76cc-84f8-279bb588db25" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CollateralizedMortgageObligationsMember_01a087ea-1bab-7f67-a18b-48268697b205" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CollateralizedMortgageObligationsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_01a087ea-1bab-7b02-9b90-c3af46b9ba96" xlink:to="loc_us-gaap_CollateralizedMortgageObligationsMember_01a087ea-1bab-7f67-a18b-48268697b205" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_boh_ResidentialGovernmentAgenciesOrSponsoredEnterprisesMember_01a087ea-1bab-70eb-bf34-fd3b7ced30ec" xlink:href="boh-20260930.xsd#boh_ResidentialGovernmentAgenciesOrSponsoredEnterprisesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CollateralizedMortgageObligationsMember_01a087ea-1bab-7f67-a18b-48268697b205" xlink:to="loc_boh_ResidentialGovernmentAgenciesOrSponsoredEnterprisesMember_01a087ea-1bab-70eb-bf34-fd3b7ced30ec" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_boh_CommercialGovernmentAgenciesOrSponsoredEnterprisesMember_01a087ea-1bab-754b-b086-883a614abfc0" xlink:href="boh-20260930.xsd#boh_CommercialGovernmentAgenciesOrSponsoredEnterprisesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CollateralizedMortgageObligationsMember_01a087ea-1bab-7f67-a18b-48268697b205" xlink:to="loc_boh_CommercialGovernmentAgenciesOrSponsoredEnterprisesMember_01a087ea-1bab-754b-b086-883a614abfc0" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_boh_CommercialNonAgencyMember_01a087ea-1bab-76ee-86a9-bd96f527ab45" xlink:href="boh-20260930.xsd#boh_CommercialNonAgencyMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CollateralizedMortgageObligationsMember_01a087ea-1bab-7f67-a18b-48268697b205" xlink:to="loc_boh_CommercialNonAgencyMember_01a087ea-1bab-76ee-86a9-bd96f527ab45" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_boh_ResidentialMortgageBackedSecuritiesIssuedByUSGovernmentSponsoredEnterprisesMember_01a087ea-1bab-7ac2-973e-73463cd39e40" xlink:href="boh-20260930.xsd#boh_ResidentialMortgageBackedSecuritiesIssuedByUSGovernmentSponsoredEnterprisesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_01a087ea-1bab-7b02-9b90-c3af46b9ba96" xlink:to="loc_boh_ResidentialMortgageBackedSecuritiesIssuedByUSGovernmentSponsoredEnterprisesMember_01a087ea-1bab-7ac2-973e-73463cd39e40" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsFairValueDisclosureAbstract_01a087ea-1bab-74dc-9ccb-4cca27c0122e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AssetsFairValueDisclosureAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_01a087ea-1bab-7d90-abc3-72c53586f8df" xlink:to="loc_us-gaap_AssetsFairValueDisclosureAbstract_01a087ea-1bab-74dc-9ccb-4cca27c0122e" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSaleExcludingAccruedInterest_01a087ea-1bab-7525-a5a0-cccf15e8f7e5" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtSecuritiesAvailableForSaleExcludingAccruedInterest"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsFairValueDisclosureAbstract_01a087ea-1bab-74dc-9ccb-4cca27c0122e" xlink:to="loc_us-gaap_DebtSecuritiesAvailableForSaleExcludingAccruedInterest_01a087ea-1bab-7525-a5a0-cccf15e8f7e5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LoansReceivableHeldForSaleNetNotPartOfDisposalGroup_01a087ea-1bab-75cc-be0e-3a178edd4d49" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LoansReceivableHeldForSaleNetNotPartOfDisposalGroup"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsFairValueDisclosureAbstract_01a087ea-1bab-74dc-9ccb-4cca27c0122e" xlink:to="loc_us-gaap_LoansReceivableHeldForSaleNetNotPartOfDisposalGroup_01a087ea-1bab-75cc-be0e-3a178edd4d49" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ServicingAssetAtFairValueAmount_01a087ea-1bab-7e8c-a02d-8d1c5e73992e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ServicingAssetAtFairValueAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsFairValueDisclosureAbstract_01a087ea-1bab-74dc-9ccb-4cca27c0122e" xlink:to="loc_us-gaap_ServicingAssetAtFairValueAmount_01a087ea-1bab-7e8c-a02d-8d1c5e73992e" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_boh_DeferredCompensationPlanAssetsFairValueDisclosure_01a087ea-1bab-7c65-a6c4-6f7999bda328" xlink:href="boh-20260930.xsd#boh_DeferredCompensationPlanAssetsFairValueDisclosure"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsFairValueDisclosureAbstract_01a087ea-1bab-74dc-9ccb-4cca27c0122e" xlink:to="loc_boh_DeferredCompensationPlanAssetsFairValueDisclosure_01a087ea-1bab-7c65-a6c4-6f7999bda328" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeAssets_01a087ea-1bab-7f43-9962-848a6732944d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsFairValueDisclosureAbstract_01a087ea-1bab-74dc-9ccb-4cca27c0122e" xlink:to="loc_us-gaap_DerivativeAssets_01a087ea-1bab-7f43-9962-848a6732944d" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsFairValueDisclosure_01a087ea-1bab-761a-89e8-8e64b75b4a21" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AssetsFairValueDisclosure"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsFairValueDisclosureAbstract_01a087ea-1bab-74dc-9ccb-4cca27c0122e" xlink:to="loc_us-gaap_AssetsFairValueDisclosure_01a087ea-1bab-761a-89e8-8e64b75b4a21" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesFairValueDisclosureAbstract_01a087ea-1bab-7283-8df2-55301f505db7" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LiabilitiesFairValueDisclosureAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_01a087ea-1bab-7d90-abc3-72c53586f8df" xlink:to="loc_us-gaap_LiabilitiesFairValueDisclosureAbstract_01a087ea-1bab-7283-8df2-55301f505db7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeLiabilities_01a087ea-1bab-72de-9882-73c774a8f239" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesFairValueDisclosureAbstract_01a087ea-1bab-7283-8df2-55301f505db7" xlink:to="loc_us-gaap_DerivativeLiabilities_01a087ea-1bab-72de-9882-73c774a8f239" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesFairValueDisclosure_01a087ea-1bab-77a8-af23-7fb4aa609497" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LiabilitiesFairValueDisclosure"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesFairValueDisclosureAbstract_01a087ea-1bab-7283-8df2-55301f505db7" xlink:to="loc_us-gaap_LiabilitiesFairValueDisclosure_01a087ea-1bab-77a8-af23-7fb4aa609497" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.boh.com/role/FairValueofAssetsandLiabilitiesScheduleofDifferencebetweenAggregateFairValueandAggregateUnpaidPrincipalBalanceDetails" xlink:type="simple" xlink:href="boh-20260930.xsd#FairValueofAssetsandLiabilitiesScheduleofDifferencebetweenAggregateFairValueandAggregateUnpaidPrincipalBalanceDetails"/>
  <link:definitionLink xlink:role="http://www.boh.com/role/FairValueofAssetsandLiabilitiesScheduleofDifferencebetweenAggregateFairValueandAggregateUnpaidPrincipalBalanceDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueOptionQuantitativeDisclosuresLineItems_01a087ea-1bab-708e-a25d-9cf970ec658b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueOptionQuantitativeDisclosuresLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueOptionQuantitativeDisclosuresTable_01a087ea-1bab-76cf-90e9-e457e60cfaf1" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueOptionQuantitativeDisclosuresTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FairValueOptionQuantitativeDisclosuresLineItems_01a087ea-1bab-708e-a25d-9cf970ec658b" xlink:to="loc_us-gaap_FairValueOptionQuantitativeDisclosuresTable_01a087ea-1bab-76cf-90e9-e457e60cfaf1" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancialInstrumentAxis_01a087ea-1bab-761f-8711-dc6f17ef1bd5" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancialInstrumentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueOptionQuantitativeDisclosuresTable_01a087ea-1bab-76cf-90e9-e457e60cfaf1" xlink:to="loc_us-gaap_FinancialInstrumentAxis_01a087ea-1bab-761f-8711-dc6f17ef1bd5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_01a087ea-1bab-761f-8711-dc6f17ef1bd5_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FinancialInstrumentAxis_01a087ea-1bab-761f-8711-dc6f17ef1bd5" xlink:to="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_01a087ea-1bab-761f-8711-dc6f17ef1bd5_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_01a087ea-1bab-7255-8dc4-9585f9bec507" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FinancialInstrumentAxis_01a087ea-1bab-761f-8711-dc6f17ef1bd5" xlink:to="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_01a087ea-1bab-7255-8dc4-9585f9bec507" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_boh_ResidentialMortgageHeldForSaleMember_01a087ea-1bab-7246-89fa-67dce786fbc5" xlink:href="boh-20260930.xsd#boh_ResidentialMortgageHeldForSaleMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_01a087ea-1bab-7255-8dc4-9585f9bec507" xlink:to="loc_boh_ResidentialMortgageHeldForSaleMember_01a087ea-1bab-7246-89fa-67dce786fbc5" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LoansHeldForSaleFairValueDisclosure_01a087ea-1bab-7809-a6df-ec0cba40d0e7" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LoansHeldForSaleFairValueDisclosure"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueOptionQuantitativeDisclosuresLineItems_01a087ea-1bab-708e-a25d-9cf970ec658b" xlink:to="loc_us-gaap_LoansHeldForSaleFairValueDisclosure_01a087ea-1bab-7809-a6df-ec0cba40d0e7" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_boh_FairValueOptionLoansHeldforSaleAggregateUnpaidPrincipal_01a087ea-1bab-7f16-a9e3-6ac08c2e3214" xlink:href="boh-20260930.xsd#boh_FairValueOptionLoansHeldforSaleAggregateUnpaidPrincipal"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueOptionQuantitativeDisclosuresLineItems_01a087ea-1bab-708e-a25d-9cf970ec658b" xlink:to="loc_boh_FairValueOptionLoansHeldforSaleAggregateUnpaidPrincipal_01a087ea-1bab-7f16-a9e3-6ac08c2e3214" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueOptionAggregateDifferencesLoansAndLongTermReceivables_01a087ea-1bab-78c1-85bb-04e15f6154ca" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueOptionAggregateDifferencesLoansAndLongTermReceivables"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueOptionQuantitativeDisclosuresLineItems_01a087ea-1bab-708e-a25d-9cf970ec658b" xlink:to="loc_us-gaap_FairValueOptionAggregateDifferencesLoansAndLongTermReceivables_01a087ea-1bab-78c1-85bb-04e15f6154ca" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.boh.com/role/FairValueofAssetsandLiabilitiesScheduleofCarryingAmountFairValueandFairValueHierarchyofFinancialInstrumentsDetails" xlink:type="simple" xlink:href="boh-20260930.xsd#FairValueofAssetsandLiabilitiesScheduleofCarryingAmountFairValueandFairValueHierarchyofFinancialInstrumentsDetails"/>
  <link:definitionLink xlink:role="http://www.boh.com/role/FairValueofAssetsandLiabilitiesScheduleofCarryingAmountFairValueandFairValueHierarchyofFinancialInstrumentsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems_01a087ea-1bab-7264-a84b-81503d2f305d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByBalanceSheetGroupingTable_01a087ea-1bab-76e7-b700-85aa4393f2f4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueByBalanceSheetGroupingTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems_01a087ea-1bab-7264-a84b-81503d2f305d" xlink:to="loc_us-gaap_FairValueByBalanceSheetGroupingTable_01a087ea-1bab-76e7-b700-85aa4393f2f4" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_01a087ea-1bab-797b-bc83-5588d6af8e76" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueByFairValueHierarchyLevelAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueByBalanceSheetGroupingTable_01a087ea-1bab-76e7-b700-85aa4393f2f4" xlink:to="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_01a087ea-1bab-797b-bc83-5588d6af8e76" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_01a087ea-1bab-797b-bc83-5588d6af8e76_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_01a087ea-1bab-797b-bc83-5588d6af8e76" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_01a087ea-1bab-797b-bc83-5588d6af8e76_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_01a087ea-1bab-797a-a462-d63ae59715a1" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_01a087ea-1bab-797b-bc83-5588d6af8e76" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_01a087ea-1bab-797a-a462-d63ae59715a1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel1Member_01a087ea-1bab-7a28-86ab-fd209808e800" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueInputsLevel1Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_01a087ea-1bab-797a-a462-d63ae59715a1" xlink:to="loc_us-gaap_FairValueInputsLevel1Member_01a087ea-1bab-7a28-86ab-fd209808e800" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel2Member_01a087ea-1bab-78c8-a31b-1c3d9d854833" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueInputsLevel2Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_01a087ea-1bab-797a-a462-d63ae59715a1" xlink:to="loc_us-gaap_FairValueInputsLevel2Member_01a087ea-1bab-78c8-a31b-1c3d9d854833" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel3Member_01a087ea-1bab-7b81-8658-bc479a1f720a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueInputsLevel3Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_01a087ea-1bab-797a-a462-d63ae59715a1" xlink:to="loc_us-gaap_FairValueInputsLevel3Member_01a087ea-1bab-7b81-8658-bc479a1f720a" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByMeasurementBasisAxis_01a087ea-1bab-7ae3-9114-401cd9b042cd" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueByMeasurementBasisAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueByBalanceSheetGroupingTable_01a087ea-1bab-76e7-b700-85aa4393f2f4" xlink:to="loc_us-gaap_FairValueByMeasurementBasisAxis_01a087ea-1bab-7ae3-9114-401cd9b042cd" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_01a087ea-1bab-7ae3-9114-401cd9b042cd_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PortionAtFairValueFairValueDisclosureMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByMeasurementBasisAxis_01a087ea-1bab-7ae3-9114-401cd9b042cd" xlink:to="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_01a087ea-1bab-7ae3-9114-401cd9b042cd_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueDisclosureItemAmountsDomain_01a087ea-1bab-7a9f-b939-d0bebd5f39fc" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueDisclosureItemAmountsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByMeasurementBasisAxis_01a087ea-1bab-7ae3-9114-401cd9b042cd" xlink:to="loc_us-gaap_FairValueDisclosureItemAmountsDomain_01a087ea-1bab-7a9f-b939-d0bebd5f39fc" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_01a087ea-1bab-73b8-bb40-d3f3ae090681" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PortionAtFairValueFairValueDisclosureMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueDisclosureItemAmountsDomain_01a087ea-1bab-7a9f-b939-d0bebd5f39fc" xlink:to="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_01a087ea-1bab-73b8-bb40-d3f3ae090681" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CarryingReportedAmountFairValueDisclosureMember_01a087ea-1bab-718e-af2a-643e85518063" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CarryingReportedAmountFairValueDisclosureMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_01a087ea-1bab-73b8-bb40-d3f3ae090681" xlink:to="loc_us-gaap_CarryingReportedAmountFairValueDisclosureMember_01a087ea-1bab-718e-af2a-643e85518063" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EstimateOfFairValueFairValueDisclosureMember_01a087ea-1bab-7c3c-8208-12ef65e8fbe8" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EstimateOfFairValueFairValueDisclosureMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_01a087ea-1bab-73b8-bb40-d3f3ae090681" xlink:to="loc_us-gaap_EstimateOfFairValueFairValueDisclosureMember_01a087ea-1bab-7c3c-8208-12ef65e8fbe8" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancialInstrumentsFinancialAssetsBalanceSheetGroupingsAbstract_01a087ea-1bab-71cb-90fe-10b55369f790" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancialInstrumentsFinancialAssetsBalanceSheetGroupingsAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems_01a087ea-1bab-7264-a84b-81503d2f305d" xlink:to="loc_us-gaap_FinancialInstrumentsFinancialAssetsBalanceSheetGroupingsAbstract_01a087ea-1bab-71cb-90fe-10b55369f790" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HeldToMaturitySecuritiesFairValue_01a087ea-1bab-7bae-a2fe-7b487e1bf7ee" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_HeldToMaturitySecuritiesFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancialInstrumentsFinancialAssetsBalanceSheetGroupingsAbstract_01a087ea-1bab-71cb-90fe-10b55369f790" xlink:to="loc_us-gaap_HeldToMaturitySecuritiesFairValue_01a087ea-1bab-7bae-a2fe-7b487e1bf7ee" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LoansReceivableFairValueDisclosure_01a087ea-1bab-7f79-ad48-ba09b404d807" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LoansReceivableFairValueDisclosure"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancialInstrumentsFinancialAssetsBalanceSheetGroupingsAbstract_01a087ea-1bab-71cb-90fe-10b55369f790" xlink:to="loc_us-gaap_LoansReceivableFairValueDisclosure_01a087ea-1bab-7f79-ad48-ba09b404d807" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancialInstrumentsFinancialLiabilitiesBalanceSheetGroupingsAbstract_01a087ea-1bab-7a86-84ec-d98ab35a397f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancialInstrumentsFinancialLiabilitiesBalanceSheetGroupingsAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems_01a087ea-1bab-7264-a84b-81503d2f305d" xlink:to="loc_us-gaap_FinancialInstrumentsFinancialLiabilitiesBalanceSheetGroupingsAbstract_01a087ea-1bab-7a86-84ec-d98ab35a397f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_boh_FairValueTimeDeposits_01a087ea-1bab-78f0-b32f-1589bab82cb5" xlink:href="boh-20260930.xsd#boh_FairValueTimeDeposits"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancialInstrumentsFinancialLiabilitiesBalanceSheetGroupingsAbstract_01a087ea-1bab-7a86-84ec-d98ab35a397f" xlink:to="loc_boh_FairValueTimeDeposits_01a087ea-1bab-78f0-b32f-1589bab82cb5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SecuritiesLoanedOrSoldUnderAgreementsToRepurchaseFairValueDisclosure_01a087ea-1bab-770d-bde8-9a17d2e65e83" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SecuritiesLoanedOrSoldUnderAgreementsToRepurchaseFairValueDisclosure"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancialInstrumentsFinancialLiabilitiesBalanceSheetGroupingsAbstract_01a087ea-1bab-7a86-84ec-d98ab35a397f" xlink:to="loc_us-gaap_SecuritiesLoanedOrSoldUnderAgreementsToRepurchaseFairValueDisclosure_01a087ea-1bab-770d-bde8-9a17d2e65e83" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_boh_LongTermDebtExcludingCapitalLeaseObligationsFairValue_01a087ea-1bab-74df-b7fa-8ee3a5ab967e" xlink:href="boh-20260930.xsd#boh_LongTermDebtExcludingCapitalLeaseObligationsFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancialInstrumentsFinancialLiabilitiesBalanceSheetGroupingsAbstract_01a087ea-1bab-7a86-84ec-d98ab35a397f" xlink:to="loc_boh_LongTermDebtExcludingCapitalLeaseObligationsFairValue_01a087ea-1bab-74df-b7fa-8ee3a5ab967e" xlink:type="arc" order="3"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://fasb.org/srt/role/srt-eedm/ExtensibleEnumerationLists" xlink:type="simple" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-roles-2026.xsd#eedm1"/>
  <link:definitionLink xlink:role="http://fasb.org/srt/role/srt-eedm/ExtensibleEnumerationLists" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeStatementAbstract" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncomeStatementAbstract"/>
    <link:loc xlink:type="locator" xlink:label="loc_boh_MortgageBankingIncome_01a087ea-15ce-7fb1-991b-9878e947bf96" xlink:href="boh-20260930.xsd#boh_MortgageBankingIncome"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementAbstract" xlink:to="loc_boh_MortgageBankingIncome_01a087ea-15ce-7fb1-991b-9878e947bf96" xlink:type="arc" order="691"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NoninterestIncomeOtherOperatingIncome" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NoninterestIncomeOtherOperatingIncome"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementAbstract" xlink:to="loc_us-gaap_NoninterestIncomeOtherOperatingIncome" xlink:type="arc" order="692"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestIncomeDebtSecuritiesAvailableForSaleOperating" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InterestIncomeDebtSecuritiesAvailableForSaleOperating"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementAbstract" xlink:to="loc_us-gaap_InterestIncomeDebtSecuritiesAvailableForSaleOperating" xlink:type="arc" order="693"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GainLossOnSaleOfInvestments" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_GainLossOnSaleOfInvestments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementAbstract" xlink:to="loc_us-gaap_GainLossOnSaleOfInvestments" xlink:type="arc" order="694"/>
  </link:definitionLink>
</link:linkbase>
