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

<!--XBRL Document Created with the Workiva Platform-->
<!--Copyright 2026 Workiva-->
<!--r:019e26a3-c224-706f-9c95-bf5210a3f291,g:0dab53f3-7ef2-4963-96f8-54ee3c418833-->
<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.hertzequip.com/role/CONDENSEDCONSOLIDATEDSTATEMENTSOFOPERATIONS" xlink:type="simple" xlink:href="hri-20260630.xsd#CONDENSEDCONSOLIDATEDSTATEMENTSOFOPERATIONS"/>
  <link:definitionLink xlink:role="http://www.hertzequip.com/role/CONDENSEDCONSOLIDATEDSTATEMENTSOFOPERATIONS" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementLineItems_019e26a3-c2f7-7c91-824e-f1fd69780b69" 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_019e26a3-c2f7-715c-973e-fede7f1cc1f5" 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_019e26a3-c2f7-7c91-824e-f1fd69780b69" xlink:to="loc_us-gaap_StatementTable_019e26a3-c2f7-715c-973e-fede7f1cc1f5" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductOrServiceAxis_019e26a3-c2f7-78ef-8b99-61792e2bd10c" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ProductOrServiceAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_019e26a3-c2f7-715c-973e-fede7f1cc1f5" xlink:to="loc_srt_ProductOrServiceAxis_019e26a3-c2f7-78ef-8b99-61792e2bd10c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_019e26a3-c2f7-78ef-8b99-61792e2bd10c_default" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ProductsAndServicesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ProductOrServiceAxis_019e26a3-c2f7-78ef-8b99-61792e2bd10c" xlink:to="loc_srt_ProductsAndServicesDomain_019e26a3-c2f7-78ef-8b99-61792e2bd10c_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_019e26a3-c2f7-70ac-99f6-1ca03a39daa2" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ProductsAndServicesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ProductOrServiceAxis_019e26a3-c2f7-78ef-8b99-61792e2bd10c" xlink:to="loc_srt_ProductsAndServicesDomain_019e26a3-c2f7-70ac-99f6-1ca03a39daa2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_hri_EquipmentRentalMember_019e26a3-c2f7-787e-a563-571b12048639" xlink:href="hri-20260630.xsd#hri_EquipmentRentalMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_019e26a3-c2f7-70ac-99f6-1ca03a39daa2" xlink:to="loc_hri_EquipmentRentalMember_019e26a3-c2f7-787e-a563-571b12048639" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_hri_SalesofRevenueEarningEquipmentMember_019e26a3-c2f7-7b56-90ec-697e61b65235" xlink:href="hri-20260630.xsd#hri_SalesofRevenueEarningEquipmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_019e26a3-c2f7-70ac-99f6-1ca03a39daa2" xlink:to="loc_hri_SalesofRevenueEarningEquipmentMember_019e26a3-c2f7-7b56-90ec-697e61b65235" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_hri_NewEquipmentPartsandSuppliesMember_019e26a3-c2f7-7f28-8a2a-7469cb7d223b" xlink:href="hri-20260630.xsd#hri_NewEquipmentPartsandSuppliesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_019e26a3-c2f7-70ac-99f6-1ca03a39daa2" xlink:to="loc_hri_NewEquipmentPartsandSuppliesMember_019e26a3-c2f7-7f28-8a2a-7469cb7d223b" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_hri_ServiceandOtherRevenueMember_019e26a3-c2f7-7b23-8571-b89799f385ef" xlink:href="hri-20260630.xsd#hri_ServiceandOtherRevenueMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_019e26a3-c2f7-70ac-99f6-1ca03a39daa2" xlink:to="loc_hri_ServiceandOtherRevenueMember_019e26a3-c2f7-7b23-8571-b89799f385ef" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenuesAbstract_019e26a3-c2f7-7f10-930b-ef514ca17f1e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RevenuesAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_019e26a3-c2f7-7c91-824e-f1fd69780b69" xlink:to="loc_us-gaap_RevenuesAbstract_019e26a3-c2f7-7f10-930b-ef514ca17f1e" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Revenues_019e26a3-c2f7-7ff6-8720-d79c6633c029" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_Revenues"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RevenuesAbstract_019e26a3-c2f7-7f10-930b-ef514ca17f1e" xlink:to="loc_us-gaap_Revenues_019e26a3-c2f7-7ff6-8720-d79c6633c029" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CostsAndExpensesAbstract_019e26a3-c2f7-780e-9d6d-03631a3decbe" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CostsAndExpensesAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_019e26a3-c2f7-7c91-824e-f1fd69780b69" xlink:to="loc_us-gaap_CostsAndExpensesAbstract_019e26a3-c2f7-780e-9d6d-03631a3decbe" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DirectOperatingCosts_019e26a3-c2f7-7354-930e-e233ab659811" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DirectOperatingCosts"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CostsAndExpensesAbstract_019e26a3-c2f7-780e-9d6d-03631a3decbe" xlink:to="loc_us-gaap_DirectOperatingCosts_019e26a3-c2f7-7354-930e-e233ab659811" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquipmentExpense_019e26a3-c2f7-7526-93d3-91be1d10eb66" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EquipmentExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CostsAndExpensesAbstract_019e26a3-c2f7-780e-9d6d-03631a3decbe" xlink:to="loc_us-gaap_EquipmentExpense_019e26a3-c2f7-7526-93d3-91be1d10eb66" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_hri_CostOfRevenueEarningEquipmentSold_019e26a3-c2f7-7aff-be50-d7deac515d23" xlink:href="hri-20260630.xsd#hri_CostOfRevenueEarningEquipmentSold"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CostsAndExpensesAbstract_019e26a3-c2f7-780e-9d6d-03631a3decbe" xlink:to="loc_hri_CostOfRevenueEarningEquipmentSold_019e26a3-c2f7-7aff-be50-d7deac515d23" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_hri_CostOfSalesOfNewEquipmentPartsAndSupplies_019e26a3-c2f7-70a5-8962-294abee21c3c" xlink:href="hri-20260630.xsd#hri_CostOfSalesOfNewEquipmentPartsAndSupplies"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CostsAndExpensesAbstract_019e26a3-c2f7-780e-9d6d-03631a3decbe" xlink:to="loc_hri_CostOfSalesOfNewEquipmentPartsAndSupplies_019e26a3-c2f7-70a5-8962-294abee21c3c" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SellingGeneralAndAdministrativeExpense_019e26a3-c2f7-7827-a6ab-094bcaad3d9d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SellingGeneralAndAdministrativeExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CostsAndExpensesAbstract_019e26a3-c2f7-780e-9d6d-03631a3decbe" xlink:to="loc_us-gaap_SellingGeneralAndAdministrativeExpense_019e26a3-c2f7-7827-a6ab-094bcaad3d9d" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationAcquisitionRelatedCosts_019e26a3-c2f7-793e-ad02-b9e3527716e3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessCombinationAcquisitionRelatedCosts"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CostsAndExpensesAbstract_019e26a3-c2f7-780e-9d6d-03631a3decbe" xlink:to="loc_us-gaap_BusinessCombinationAcquisitionRelatedCosts_019e26a3-c2f7-793e-ad02-b9e3527716e3" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CostOfGoodsAndServicesSoldDepreciationAndAmortization_019e26a3-c2f7-79d8-8d67-343275e9c947" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CostOfGoodsAndServicesSoldDepreciationAndAmortization"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CostsAndExpensesAbstract_019e26a3-c2f7-780e-9d6d-03631a3decbe" xlink:to="loc_us-gaap_CostOfGoodsAndServicesSoldDepreciationAndAmortization_019e26a3-c2f7-79d8-8d67-343275e9c947" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestIncomeExpenseNonoperatingNet_019e26a3-c2f7-7beb-b756-346fd3570a77" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InterestIncomeExpenseNonoperatingNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CostsAndExpensesAbstract_019e26a3-c2f7-780e-9d6d-03631a3decbe" xlink:to="loc_us-gaap_InterestIncomeExpenseNonoperatingNet_019e26a3-c2f7-7beb-b756-346fd3570a77" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GainLossOnSaleOfBusiness_019e3be1-ec6e-7079-9c39-12a1e3857786" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_GainLossOnSaleOfBusiness"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CostsAndExpensesAbstract_019e26a3-c2f7-780e-9d6d-03631a3decbe" xlink:to="loc_us-gaap_GainLossOnSaleOfBusiness_019e3be1-ec6e-7079-9c39-12a1e3857786" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherNonoperatingIncomeExpense_019e26a3-c2f7-7901-b3c1-c7023145b2d0" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherNonoperatingIncomeExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CostsAndExpensesAbstract_019e26a3-c2f7-780e-9d6d-03631a3decbe" xlink:to="loc_us-gaap_OtherNonoperatingIncomeExpense_019e26a3-c2f7-7901-b3c1-c7023145b2d0" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_hri_CostsAndExpensesNonOperatingIncomeAndInterestExpense_019e26a3-c2f7-78b9-8e29-23ae7498457c" xlink:href="hri-20260630.xsd#hri_CostsAndExpensesNonOperatingIncomeAndInterestExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CostsAndExpensesAbstract_019e26a3-c2f7-780e-9d6d-03631a3decbe" xlink:to="loc_hri_CostsAndExpensesNonOperatingIncomeAndInterestExpense_019e26a3-c2f7-78b9-8e29-23ae7498457c" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_019e26a3-c2f7-7a34-ada5-3ffddb89f63f" 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_StatementLineItems_019e26a3-c2f7-7c91-824e-f1fd69780b69" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_019e26a3-c2f7-7a34-ada5-3ffddb89f63f" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxExpenseBenefit_019e26a3-c2f7-7068-b063-466ae56bfb55" 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_StatementLineItems_019e26a3-c2f7-7c91-824e-f1fd69780b69" xlink:to="loc_us-gaap_IncomeTaxExpenseBenefit_019e26a3-c2f7-7068-b063-466ae56bfb55" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_019e26a3-c2f7-7ca8-8bcb-012870e95796" 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_StatementLineItems_019e26a3-c2f7-7c91-824e-f1fd69780b69" xlink:to="loc_us-gaap_NetIncomeLoss_019e26a3-c2f7-7ca8-8bcb-012870e95796" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingAbstract_019e26a3-c2f7-779c-80aa-ef7184374270" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_WeightedAverageNumberOfSharesOutstandingAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_019e26a3-c2f7-7c91-824e-f1fd69780b69" xlink:to="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingAbstract_019e26a3-c2f7-779c-80aa-ef7184374270" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_019e26a3-c2f7-71a0-8e7e-c1a6b5babf6c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_WeightedAverageNumberOfSharesOutstandingBasic"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingAbstract_019e26a3-c2f7-779c-80aa-ef7184374270" xlink:to="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_019e26a3-c2f7-71a0-8e7e-c1a6b5babf6c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_019e26a3-c2f7-78ac-9894-aa79ffae4517" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingAbstract_019e26a3-c2f7-779c-80aa-ef7184374270" xlink:to="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_019e26a3-c2f7-78ac-9894-aa79ffae4517" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EarningsPerShareAbstract_019e26a3-c2f7-759d-a930-692b7f95d4d2" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EarningsPerShareAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_019e26a3-c2f7-7c91-824e-f1fd69780b69" xlink:to="loc_us-gaap_EarningsPerShareAbstract_019e26a3-c2f7-759d-a930-692b7f95d4d2" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EarningsPerShareBasic_019e26a3-c2f7-772d-8fa0-8d5fab001a72" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EarningsPerShareBasic"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EarningsPerShareAbstract_019e26a3-c2f7-759d-a930-692b7f95d4d2" xlink:to="loc_us-gaap_EarningsPerShareBasic_019e26a3-c2f7-772d-8fa0-8d5fab001a72" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EarningsPerShareDiluted_019e26a3-c2f7-7a28-a4c5-a062c5bc6333" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EarningsPerShareDiluted"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EarningsPerShareAbstract_019e26a3-c2f7-759d-a930-692b7f95d4d2" xlink:to="loc_us-gaap_EarningsPerShareDiluted_019e26a3-c2f7-7a28-a4c5-a062c5bc6333" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.hertzequip.com/role/CONDENSEDCONSOLIDATEDSTATEMENTSOFCHANGESINEQUITY" xlink:type="simple" xlink:href="hri-20260630.xsd#CONDENSEDCONSOLIDATEDSTATEMENTSOFCHANGESINEQUITY"/>
  <link:definitionLink xlink:role="http://www.hertzequip.com/role/CONDENSEDCONSOLIDATEDSTATEMENTSOFCHANGESINEQUITY" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementLineItems_019e26a3-c2f7-70b1-abd9-f0ee53a830eb" 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_019e26a3-c2f7-7ddb-ac1e-24cab3e8ed34" 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_019e26a3-c2f7-70b1-abd9-f0ee53a830eb" xlink:to="loc_us-gaap_StatementTable_019e26a3-c2f7-7ddb-ac1e-24cab3e8ed34" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementEquityComponentsAxis_019e26a3-c2f7-7355-bf7f-904e64d599de" 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_019e26a3-c2f7-7ddb-ac1e-24cab3e8ed34" xlink:to="loc_us-gaap_StatementEquityComponentsAxis_019e26a3-c2f7-7355-bf7f-904e64d599de" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_019e26a3-c2f7-7355-bf7f-904e64d599de_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_019e26a3-c2f7-7355-bf7f-904e64d599de" xlink:to="loc_us-gaap_EquityComponentDomain_019e26a3-c2f7-7355-bf7f-904e64d599de_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_019e26a3-c2f7-7219-803f-9441e1c96c6d" 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_019e26a3-c2f7-7355-bf7f-904e64d599de" xlink:to="loc_us-gaap_EquityComponentDomain_019e26a3-c2f7-7219-803f-9441e1c96c6d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockMember_019e26a3-c2f7-7c80-98ee-cf827eb7724b" 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_019e26a3-c2f7-7219-803f-9441e1c96c6d" xlink:to="loc_us-gaap_CommonStockMember_019e26a3-c2f7-7c80-98ee-cf827eb7724b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdditionalPaidInCapitalMember_019e26a3-c2f7-7521-8539-9346132a6d26" 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_019e26a3-c2f7-7219-803f-9441e1c96c6d" xlink:to="loc_us-gaap_AdditionalPaidInCapitalMember_019e26a3-c2f7-7521-8539-9346132a6d26" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetainedEarningsMember_019e26a3-c2f7-7078-a56b-501fa083c8e5" 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_019e26a3-c2f7-7219-803f-9441e1c96c6d" xlink:to="loc_us-gaap_RetainedEarningsMember_019e26a3-c2f7-7078-a56b-501fa083c8e5" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_019e26a3-c2f7-73cb-a37d-07c39afebb05" 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_019e26a3-c2f7-7219-803f-9441e1c96c6d" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_019e26a3-c2f7-73cb-a37d-07c39afebb05" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TreasuryStockCommonMember_019e26a3-c2f7-7596-865e-73e69fcb9080" 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_019e26a3-c2f7-7219-803f-9441e1c96c6d" xlink:to="loc_us-gaap_TreasuryStockCommonMember_019e26a3-c2f7-7596-865e-73e69fcb9080" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_019e26a3-c2f7-781a-8561-fcf643acb03b" 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_019e26a3-c2f7-70b1-abd9-f0ee53a830eb" xlink:to="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_019e26a3-c2f7-781a-8561-fcf643acb03b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockSharesOutstanding_019e26a3-c2f7-774b-adee-48dc4d961ecd" 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_IncreaseDecreaseInStockholdersEquityRollForward_019e26a3-c2f7-781a-8561-fcf643acb03b" xlink:to="loc_us-gaap_CommonStockSharesOutstanding_019e26a3-c2f7-774b-adee-48dc4d961ecd" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquity_019e26a3-c2f7-7bf5-94ff-c8043e40d361" 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_019e26a3-c2f7-781a-8561-fcf643acb03b" xlink:to="loc_us-gaap_StockholdersEquity_019e26a3-c2f7-7bf5-94ff-c8043e40d361" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_019e26a3-c2f7-7b32-815b-a70087141b25" 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_019e26a3-c2f7-781a-8561-fcf643acb03b" xlink:to="loc_us-gaap_NetIncomeLoss_019e26a3-c2f7-7b32-815b-a70087141b25" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_019e26a3-c2f7-754d-a94a-5f594c915c1a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_019e26a3-c2f7-781a-8561-fcf643acb03b" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_019e26a3-c2f7-754d-a94a-5f594c915c1a" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue_019e26a3-c2f7-7c86-9ee4-1aa7663926d3" 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_019e26a3-c2f7-781a-8561-fcf643acb03b" xlink:to="loc_us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue_019e26a3-c2f7-7c86-9ee4-1aa7663926d3" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DividendsCommonStockCash_019e26a3-c2f7-730b-9e71-ffd06cefb9a7" 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_019e26a3-c2f7-781a-8561-fcf643acb03b" xlink:to="loc_us-gaap_DividendsCommonStockCash_019e26a3-c2f7-730b-9e71-ffd06cefb9a7" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensation_019e26a3-c2f7-7198-bd82-407f7b35410f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensation"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_019e26a3-c2f7-781a-8561-fcf643acb03b" xlink:to="loc_us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensation_019e26a3-c2f7-7198-bd82-407f7b35410f" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation_019e26a3-c2f7-7e0b-8d30-86090640dcca" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_019e26a3-c2f7-781a-8561-fcf643acb03b" xlink:to="loc_us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation_019e26a3-c2f7-7e0b-8d30-86090640dcca" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationEmployeeStockPurchaseProgramRequisiteServicePeriodRecognition_019e26a3-c2f7-7ac3-995b-111bd4be65ce" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationEmployeeStockPurchaseProgramRequisiteServicePeriodRecognition"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_019e26a3-c2f7-781a-8561-fcf643acb03b" xlink:to="loc_us-gaap_AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationEmployeeStockPurchaseProgramRequisiteServicePeriodRecognition_019e26a3-c2f7-7ac3-995b-111bd4be65ce" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodSharesAcquisitions_019e3bfd-ffe3-7c05-bcea-46d0b5cbd8fe" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockIssuedDuringPeriodSharesAcquisitions"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_019e26a3-c2f7-781a-8561-fcf643acb03b" xlink:to="loc_us-gaap_StockIssuedDuringPeriodSharesAcquisitions_019e3bfd-ffe3-7c05-bcea-46d0b5cbd8fe" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodValueAcquisitions_019e3bfd-ffe3-7885-853c-2f58d16c980b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockIssuedDuringPeriodValueAcquisitions"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_019e26a3-c2f7-781a-8561-fcf643acb03b" xlink:to="loc_us-gaap_StockIssuedDuringPeriodValueAcquisitions_019e3bfd-ffe3-7885-853c-2f58d16c980b" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockSharesOutstanding_019e26a3-c2f7-7b5d-b61e-e36f2538f7c3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommonStockSharesOutstanding"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquity_019e26a3-c2f7-7545-a58a-3f7d3553fcc2" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockholdersEquity"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.hertzequip.com/role/RevenueRecognitionNarrativeDetails" xlink:type="simple" xlink:href="hri-20260630.xsd#RevenueRecognitionNarrativeDetails"/>
  <link:definitionLink xlink:role="http://www.hertzequip.com/role/RevenueRecognitionNarrativeDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisaggregationOfRevenueLineItems_019e26a3-c2f7-78f3-8c79-d32a3df679c8" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DisaggregationOfRevenueLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisaggregationOfRevenueTable_019e26a3-c2f7-7535-9207-f18df2a823bd" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DisaggregationOfRevenueTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_019e26a3-c2f7-78f3-8c79-d32a3df679c8" xlink:to="loc_us-gaap_DisaggregationOfRevenueTable_019e26a3-c2f7-7535-9207-f18df2a823bd" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_StatementGeographicalAxis_019e26a3-c2f7-76f2-b9f9-3ceda18fc4ef" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_StatementGeographicalAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DisaggregationOfRevenueTable_019e26a3-c2f7-7535-9207-f18df2a823bd" xlink:to="loc_srt_StatementGeographicalAxis_019e26a3-c2f7-76f2-b9f9-3ceda18fc4ef" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_SegmentGeographicalDomain_019e26a3-c2f7-76f2-b9f9-3ceda18fc4ef_default" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_SegmentGeographicalDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_StatementGeographicalAxis_019e26a3-c2f7-76f2-b9f9-3ceda18fc4ef" xlink:to="loc_srt_SegmentGeographicalDomain_019e26a3-c2f7-76f2-b9f9-3ceda18fc4ef_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_SegmentGeographicalDomain_019e26a3-c2f7-77da-bc8d-b40affef2f54" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_SegmentGeographicalDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_StatementGeographicalAxis_019e26a3-c2f7-76f2-b9f9-3ceda18fc4ef" xlink:to="loc_srt_SegmentGeographicalDomain_019e26a3-c2f7-77da-bc8d-b40affef2f54" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_country_US_019e26a3-c2f7-7d99-8a0f-612a30d19fe8" xlink:href="https://xbrl.sec.gov/country/2026/country-2026.xsd#country_US"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_019e26a3-c2f7-77da-bc8d-b40affef2f54" xlink:to="loc_country_US_019e26a3-c2f7-7d99-8a0f-612a30d19fe8" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskByBenchmarkAxis_019e26a3-c2f7-70ad-9a9e-303bc7752729" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ConcentrationRiskByBenchmarkAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DisaggregationOfRevenueTable_019e26a3-c2f7-7535-9207-f18df2a823bd" xlink:to="loc_us-gaap_ConcentrationRiskByBenchmarkAxis_019e26a3-c2f7-70ad-9a9e-303bc7752729" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskBenchmarkDomain_019e26a3-c2f7-70ad-9a9e-303bc7752729_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ConcentrationRiskBenchmarkDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_ConcentrationRiskByBenchmarkAxis_019e26a3-c2f7-70ad-9a9e-303bc7752729" xlink:to="loc_us-gaap_ConcentrationRiskBenchmarkDomain_019e26a3-c2f7-70ad-9a9e-303bc7752729_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskBenchmarkDomain_019e26a3-c2f7-71a5-97e1-f96a588dad5b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ConcentrationRiskBenchmarkDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_ConcentrationRiskByBenchmarkAxis_019e26a3-c2f7-70ad-9a9e-303bc7752729" xlink:to="loc_us-gaap_ConcentrationRiskBenchmarkDomain_019e26a3-c2f7-71a5-97e1-f96a588dad5b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SalesRevenueNetMember_019e26a3-c2f7-7378-af35-8fc7ee9c4e15" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SalesRevenueNetMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ConcentrationRiskBenchmarkDomain_019e26a3-c2f7-71a5-97e1-f96a588dad5b" xlink:to="loc_us-gaap_SalesRevenueNetMember_019e26a3-c2f7-7378-af35-8fc7ee9c4e15" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskByTypeAxis_019e26a3-c2f7-7104-9f96-6afb081bc3d2" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ConcentrationRiskByTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DisaggregationOfRevenueTable_019e26a3-c2f7-7535-9207-f18df2a823bd" xlink:to="loc_us-gaap_ConcentrationRiskByTypeAxis_019e26a3-c2f7-7104-9f96-6afb081bc3d2" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskTypeDomain_019e26a3-c2f7-7104-9f96-6afb081bc3d2_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ConcentrationRiskTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_ConcentrationRiskByTypeAxis_019e26a3-c2f7-7104-9f96-6afb081bc3d2" xlink:to="loc_us-gaap_ConcentrationRiskTypeDomain_019e26a3-c2f7-7104-9f96-6afb081bc3d2_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskTypeDomain_019e26a3-c2f7-76a4-a626-5e1f361e1faf" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ConcentrationRiskTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_ConcentrationRiskByTypeAxis_019e26a3-c2f7-7104-9f96-6afb081bc3d2" xlink:to="loc_us-gaap_ConcentrationRiskTypeDomain_019e26a3-c2f7-76a4-a626-5e1f361e1faf" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GeographicConcentrationRiskMember_019e26a3-c2f7-7331-8e08-2e3f4a60b0ba" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_GeographicConcentrationRiskMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ConcentrationRiskTypeDomain_019e26a3-c2f7-76a4-a626-5e1f361e1faf" xlink:to="loc_us-gaap_GeographicConcentrationRiskMember_019e26a3-c2f7-7331-8e08-2e3f4a60b0ba" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskPercentage1_019e26a3-c2f7-7db6-ab78-7a14c681aaf9" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ConcentrationRiskPercentage1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_019e26a3-c2f7-78f3-8c79-d32a3df679c8" xlink:to="loc_us-gaap_ConcentrationRiskPercentage1_019e26a3-c2f7-7db6-ab78-7a14c681aaf9" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_hri_EquipmentRentalCanceledWithoutPenaltyPeriod_019e26a3-c2f7-7607-b3e4-6039388340a4" xlink:href="hri-20260630.xsd#hri_EquipmentRentalCanceledWithoutPenaltyPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_019e26a3-c2f7-78f3-8c79-d32a3df679c8" xlink:to="loc_hri_EquipmentRentalCanceledWithoutPenaltyPeriod_019e26a3-c2f7-7607-b3e4-6039388340a4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractWithCustomerAssetGrossCurrent_019e26a3-c2f7-7c26-87b1-19bc89e497cc" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ContractWithCustomerAssetGrossCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_019e26a3-c2f7-78f3-8c79-d32a3df679c8" xlink:to="loc_us-gaap_ContractWithCustomerAssetGrossCurrent_019e26a3-c2f7-7c26-87b1-19bc89e497cc" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.hertzequip.com/role/RevenueRecognitionScheduleofAccountingGuidancefortheCompanysRevenuesDetails" xlink:type="simple" xlink:href="hri-20260630.xsd#RevenueRecognitionScheduleofAccountingGuidancefortheCompanysRevenuesDetails"/>
  <link:definitionLink xlink:role="http://www.hertzequip.com/role/RevenueRecognitionScheduleofAccountingGuidancefortheCompanysRevenuesDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisaggregationOfRevenueLineItems_019e26a3-c2f7-7286-99d7-b0f3bc12ae1c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DisaggregationOfRevenueLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisaggregationOfRevenueTable_019e26a3-c2f7-7f39-9591-d566767461e6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DisaggregationOfRevenueTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_019e26a3-c2f7-7286-99d7-b0f3bc12ae1c" xlink:to="loc_us-gaap_DisaggregationOfRevenueTable_019e26a3-c2f7-7f39-9591-d566767461e6" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductOrServiceAxis_019e26a3-c2f7-707b-873c-c7e38a76c1e3" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ProductOrServiceAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DisaggregationOfRevenueTable_019e26a3-c2f7-7f39-9591-d566767461e6" xlink:to="loc_srt_ProductOrServiceAxis_019e26a3-c2f7-707b-873c-c7e38a76c1e3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_019e26a3-c2f7-707b-873c-c7e38a76c1e3_default" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ProductsAndServicesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ProductOrServiceAxis_019e26a3-c2f7-707b-873c-c7e38a76c1e3" xlink:to="loc_srt_ProductsAndServicesDomain_019e26a3-c2f7-707b-873c-c7e38a76c1e3_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_019e26a3-c2f7-7359-8bc6-757d18e9d3d2" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ProductsAndServicesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ProductOrServiceAxis_019e26a3-c2f7-707b-873c-c7e38a76c1e3" xlink:to="loc_srt_ProductsAndServicesDomain_019e26a3-c2f7-7359-8bc6-757d18e9d3d2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_hri_EquipmentRentalExcludingOtherRentalMember_019e26a3-c2f7-7862-9d12-69b0345d562d" xlink:href="hri-20260630.xsd#hri_EquipmentRentalExcludingOtherRentalMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_019e26a3-c2f7-7359-8bc6-757d18e9d3d2" xlink:to="loc_hri_EquipmentRentalExcludingOtherRentalMember_019e26a3-c2f7-7862-9d12-69b0345d562d" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_hri_OtherRentalDeliveryAndPickUpMember_019e26a3-c2f7-76e4-b2af-2692f0597788" xlink:href="hri-20260630.xsd#hri_OtherRentalDeliveryAndPickUpMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_019e26a3-c2f7-7359-8bc6-757d18e9d3d2" xlink:to="loc_hri_OtherRentalDeliveryAndPickUpMember_019e26a3-c2f7-76e4-b2af-2692f0597788" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_hri_OtherRentalMiscellaneousMember_019e26a3-c2f7-7ad8-9483-a387e2efb12b" xlink:href="hri-20260630.xsd#hri_OtherRentalMiscellaneousMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_019e26a3-c2f7-7359-8bc6-757d18e9d3d2" xlink:to="loc_hri_OtherRentalMiscellaneousMember_019e26a3-c2f7-7ad8-9483-a387e2efb12b" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_hri_OtherRentalRevenueMember_019e26a3-c2f7-7e2e-b2d7-155920df943a" xlink:href="hri-20260630.xsd#hri_OtherRentalRevenueMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_019e26a3-c2f7-7359-8bc6-757d18e9d3d2" xlink:to="loc_hri_OtherRentalRevenueMember_019e26a3-c2f7-7e2e-b2d7-155920df943a" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_hri_EquipmentRentalMember_019e26a3-c2f7-7af4-9049-0c262e824115" xlink:href="hri-20260630.xsd#hri_EquipmentRentalMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_019e26a3-c2f7-7359-8bc6-757d18e9d3d2" xlink:to="loc_hri_EquipmentRentalMember_019e26a3-c2f7-7af4-9049-0c262e824115" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_hri_SalesofRevenueEarningEquipmentMember_019e26a3-c2f7-7a0d-ae94-f94bba339ca1" xlink:href="hri-20260630.xsd#hri_SalesofRevenueEarningEquipmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_019e26a3-c2f7-7359-8bc6-757d18e9d3d2" xlink:to="loc_hri_SalesofRevenueEarningEquipmentMember_019e26a3-c2f7-7a0d-ae94-f94bba339ca1" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_hri_NewEquipmentPartsandSuppliesMember_019e26a3-c2f7-77e3-88c8-5af8d1c766f3" xlink:href="hri-20260630.xsd#hri_NewEquipmentPartsandSuppliesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_019e26a3-c2f7-7359-8bc6-757d18e9d3d2" xlink:to="loc_hri_NewEquipmentPartsandSuppliesMember_019e26a3-c2f7-77e3-88c8-5af8d1c766f3" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_hri_ServiceandOtherRevenueMember_019e26a3-c2f7-77bc-89a3-b32fb9473422" xlink:href="hri-20260630.xsd#hri_ServiceandOtherRevenueMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_019e26a3-c2f7-7359-8bc6-757d18e9d3d2" xlink:to="loc_hri_ServiceandOtherRevenueMember_019e26a3-c2f7-77bc-89a3-b32fb9473422" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseLeaseIncome_019e26a3-c2f7-7a4e-a2e8-d5fcccbb79dd" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OperatingLeaseLeaseIncome"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_019e26a3-c2f7-7286-99d7-b0f3bc12ae1c" xlink:to="loc_us-gaap_OperatingLeaseLeaseIncome_019e26a3-c2f7-7a4e-a2e8-d5fcccbb79dd" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_019e26a3-c2f7-7787-93a5-b8c8e3bdfb3c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_019e26a3-c2f7-7286-99d7-b0f3bc12ae1c" xlink:to="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_019e26a3-c2f7-7787-93a5-b8c8e3bdfb3c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Revenues_019e26a3-c2f7-75c9-92c1-47dca7176f79" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_Revenues"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_019e26a3-c2f7-7286-99d7-b0f3bc12ae1c" xlink:to="loc_us-gaap_Revenues_019e26a3-c2f7-75c9-92c1-47dca7176f79" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.hertzequip.com/role/RevenueRecognitionScheduleofDisaggregationofRevenueDetails" xlink:type="simple" xlink:href="hri-20260630.xsd#RevenueRecognitionScheduleofDisaggregationofRevenueDetails"/>
  <link:definitionLink xlink:role="http://www.hertzequip.com/role/RevenueRecognitionScheduleofDisaggregationofRevenueDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisaggregationOfRevenueLineItems_019e26a3-c2f7-7994-a519-730a43294dad" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DisaggregationOfRevenueLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisaggregationOfRevenueTable_019e26a3-c2f7-726d-93ec-c82e02cfc0b3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DisaggregationOfRevenueTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_019e26a3-c2f7-7994-a519-730a43294dad" xlink:to="loc_us-gaap_DisaggregationOfRevenueTable_019e26a3-c2f7-726d-93ec-c82e02cfc0b3" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductOrServiceAxis_019e26a3-c2f7-734b-8963-de9158e2f639" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ProductOrServiceAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DisaggregationOfRevenueTable_019e26a3-c2f7-726d-93ec-c82e02cfc0b3" xlink:to="loc_srt_ProductOrServiceAxis_019e26a3-c2f7-734b-8963-de9158e2f639" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_019e26a3-c2f7-734b-8963-de9158e2f639_default" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ProductsAndServicesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ProductOrServiceAxis_019e26a3-c2f7-734b-8963-de9158e2f639" xlink:to="loc_srt_ProductsAndServicesDomain_019e26a3-c2f7-734b-8963-de9158e2f639_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_019e26a3-c2f7-78a5-9933-a513700903e8" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ProductsAndServicesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ProductOrServiceAxis_019e26a3-c2f7-734b-8963-de9158e2f639" xlink:to="loc_srt_ProductsAndServicesDomain_019e26a3-c2f7-78a5-9933-a513700903e8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_hri_SalesofRevenueEarningEquipmentMember_019e26a3-c2f7-74bf-980f-a0e6364f134f" xlink:href="hri-20260630.xsd#hri_SalesofRevenueEarningEquipmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_019e26a3-c2f7-78a5-9933-a513700903e8" xlink:to="loc_hri_SalesofRevenueEarningEquipmentMember_019e26a3-c2f7-74bf-980f-a0e6364f134f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_hri_SalesOfNewEquipmentMember_019e26a3-c2f7-702c-b35a-192fb691df1d" xlink:href="hri-20260630.xsd#hri_SalesOfNewEquipmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_019e26a3-c2f7-78a5-9933-a513700903e8" xlink:to="loc_hri_SalesOfNewEquipmentMember_019e26a3-c2f7-702c-b35a-192fb691df1d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_hri_SalesOfPartsAndSuppliesMember_019e26a3-c2f7-7d56-a7ef-562edda2b2dc" xlink:href="hri-20260630.xsd#hri_SalesOfPartsAndSuppliesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_019e26a3-c2f7-78a5-9933-a513700903e8" xlink:to="loc_hri_SalesOfPartsAndSuppliesMember_019e26a3-c2f7-7d56-a7ef-562edda2b2dc" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_hri_SalesOfRentalEquipmentNewEquipmentPartsAndSuppliesMember_019e26a3-c2f7-74fe-aa4c-7f2c87641fbf" xlink:href="hri-20260630.xsd#hri_SalesOfRentalEquipmentNewEquipmentPartsAndSuppliesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_019e26a3-c2f7-78a5-9933-a513700903e8" xlink:to="loc_hri_SalesOfRentalEquipmentNewEquipmentPartsAndSuppliesMember_019e26a3-c2f7-74fe-aa4c-7f2c87641fbf" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_019e26a3-c2f7-7341-a146-08a2b420e770" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_019e26a3-c2f7-7994-a519-730a43294dad" xlink:to="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_019e26a3-c2f7-7341-a146-08a2b420e770" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.hertzequip.com/role/BusinessCombinationsNarrativeDetails" xlink:type="simple" xlink:href="hri-20260630.xsd#BusinessCombinationsNarrativeDetails"/>
  <link:definitionLink xlink:role="http://www.hertzequip.com/role/BusinessCombinationsNarrativeDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionLineItems_019e26a3-c2f7-7465-b08f-eb1fa04ba8a5" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessAcquisitionLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_019e26a3-c2f7-7e69-866f-79473edf31bb" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_019e26a3-c2f7-7465-b08f-eb1fa04ba8a5" xlink:to="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_019e26a3-c2f7-7e69-866f-79473edf31bb" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAxis_019e26a3-c2f7-7e4d-ae5b-5445e35a7062" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessAcquisitionAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_019e26a3-c2f7-7e69-866f-79473edf31bb" xlink:to="loc_us-gaap_BusinessAcquisitionAxis_019e26a3-c2f7-7e4d-ae5b-5445e35a7062" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_019e26a3-c2f7-7e4d-ae5b-5445e35a7062_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessAcquisitionAcquireeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_019e26a3-c2f7-7e4d-ae5b-5445e35a7062" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_019e26a3-c2f7-7e4d-ae5b-5445e35a7062_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_019e26a3-c2f7-74ae-a621-f5ec7475564a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessAcquisitionAcquireeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_019e26a3-c2f7-7e4d-ae5b-5445e35a7062" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_019e26a3-c2f7-74ae-a621-f5ec7475564a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_hri_HEEquipmentServicesIncMember_019e26a3-c2f7-7407-b2c5-44203b563e49" xlink:href="hri-20260630.xsd#hri_HEEquipmentServicesIncMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_019e26a3-c2f7-74ae-a621-f5ec7475564a" xlink:to="loc_hri_HEEquipmentServicesIncMember_019e26a3-c2f7-7407-b2c5-44203b563e49" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityInterestIssuedOrIssuableByTypeAxis_019e26a3-c2f7-70be-a31e-18f49f7b9c5b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EquityInterestIssuedOrIssuableByTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_019e26a3-c2f7-7e69-866f-79473edf31bb" xlink:to="loc_us-gaap_EquityInterestIssuedOrIssuableByTypeAxis_019e26a3-c2f7-70be-a31e-18f49f7b9c5b" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityInterestIssuedOrIssuableTypeDomain_019e26a3-c2f7-70be-a31e-18f49f7b9c5b_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EquityInterestIssuedOrIssuableTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_EquityInterestIssuedOrIssuableByTypeAxis_019e26a3-c2f7-70be-a31e-18f49f7b9c5b" xlink:to="loc_us-gaap_EquityInterestIssuedOrIssuableTypeDomain_019e26a3-c2f7-70be-a31e-18f49f7b9c5b_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityInterestIssuedOrIssuableTypeDomain_019e26a3-c2f7-703f-b2f2-87f5de61ad5b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EquityInterestIssuedOrIssuableTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_EquityInterestIssuedOrIssuableByTypeAxis_019e26a3-c2f7-70be-a31e-18f49f7b9c5b" xlink:to="loc_us-gaap_EquityInterestIssuedOrIssuableTypeDomain_019e26a3-c2f7-703f-b2f2-87f5de61ad5b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockMember_019e26a3-c2f7-70bf-acbf-90a49ded7742" 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_EquityInterestIssuedOrIssuableTypeDomain_019e26a3-c2f7-703f-b2f2-87f5de61ad5b" xlink:to="loc_us-gaap_CommonStockMember_019e26a3-c2f7-70bf-acbf-90a49ded7742" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentAxis_019e26a3-c2f7-7f70-a6e2-dbd6b4466402" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_019e26a3-c2f7-7e69-866f-79473edf31bb" xlink:to="loc_us-gaap_DebtInstrumentAxis_019e26a3-c2f7-7f70-a6e2-dbd6b4466402" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_019e26a3-c2f7-7f70-a6e2-dbd6b4466402_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DebtInstrumentAxis_019e26a3-c2f7-7f70-a6e2-dbd6b4466402" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_019e26a3-c2f7-7f70-a6e2-dbd6b4466402_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_019e26a3-c2f7-7232-82ee-13a9a3013856" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DebtInstrumentAxis_019e26a3-c2f7-7f70-a6e2-dbd6b4466402" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_019e26a3-c2f7-7232-82ee-13a9a3013856" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_hri_SeniorUnsecuredNotesMember_019e26a3-c2f7-75d0-8f2e-85f4d6af7887" xlink:href="hri-20260630.xsd#hri_SeniorUnsecuredNotesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_019e26a3-c2f7-7232-82ee-13a9a3013856" xlink:to="loc_hri_SeniorUnsecuredNotesMember_019e26a3-c2f7-75d0-8f2e-85f4d6af7887" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_hri_SeniorSecuredTermLoanFacilityMember_019e26a3-c2f7-727e-9aaf-b51c9f97a537" xlink:href="hri-20260630.xsd#hri_SeniorSecuredTermLoanFacilityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_019e26a3-c2f7-7232-82ee-13a9a3013856" xlink:to="loc_hri_SeniorSecuredTermLoanFacilityMember_019e26a3-c2f7-727e-9aaf-b51c9f97a537" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_hri_NewABLCreditFacilityMember_019e26a3-c2f7-75eb-8f15-ebf20b95f0b7" xlink:href="hri-20260630.xsd#hri_NewABLCreditFacilityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_019e26a3-c2f7-7232-82ee-13a9a3013856" xlink:to="loc_hri_NewABLCreditFacilityMember_019e26a3-c2f7-75eb-8f15-ebf20b95f0b7" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_hri_ABLCreditFacilityMember_019e26a3-c2f7-78a1-a789-56efade19237" xlink:href="hri-20260630.xsd#hri_ABLCreditFacilityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_019e26a3-c2f7-7232-82ee-13a9a3013856" xlink:to="loc_hri_ABLCreditFacilityMember_019e26a3-c2f7-78a1-a789-56efade19237" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_019e26a3-c2f7-704a-982a-dc1ce92562c9" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongtermDebtTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_019e26a3-c2f7-7e69-866f-79473edf31bb" xlink:to="loc_us-gaap_LongtermDebtTypeAxis_019e26a3-c2f7-704a-982a-dc1ce92562c9" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_019e26a3-c2f7-704a-982a-dc1ce92562c9_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_019e26a3-c2f7-704a-982a-dc1ce92562c9" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_019e26a3-c2f7-704a-982a-dc1ce92562c9_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_019e26a3-c2f7-7706-9368-2a55a24b8cd3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_019e26a3-c2f7-704a-982a-dc1ce92562c9" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_019e26a3-c2f7-7706-9368-2a55a24b8cd3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SecuredDebtMember_019e26a3-c2f7-731d-8ef5-f2963fddbf20" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SecuredDebtMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_019e26a3-c2f7-7706-9368-2a55a24b8cd3" xlink:to="loc_us-gaap_SecuredDebtMember_019e26a3-c2f7-731d-8ef5-f2963fddbf20" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditMember_019e26a3-c2f7-765c-93af-9e1686d13be1" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LineOfCreditMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_019e26a3-c2f7-7706-9368-2a55a24b8cd3" xlink:to="loc_us-gaap_LineOfCreditMember_019e26a3-c2f7-765c-93af-9e1686d13be1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityAxis_019e26a3-c2f7-7276-acfc-21a0e7bfa391" 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_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_019e26a3-c2f7-7e69-866f-79473edf31bb" xlink:to="loc_us-gaap_CreditFacilityAxis_019e26a3-c2f7-7276-acfc-21a0e7bfa391" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityDomain_019e26a3-c2f7-7276-acfc-21a0e7bfa391_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_019e26a3-c2f7-7276-acfc-21a0e7bfa391" xlink:to="loc_us-gaap_CreditFacilityDomain_019e26a3-c2f7-7276-acfc-21a0e7bfa391_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityDomain_019e26a3-c2f7-73d6-84dd-ca9a4ea2fd8d" 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_019e26a3-c2f7-7276-acfc-21a0e7bfa391" xlink:to="loc_us-gaap_CreditFacilityDomain_019e26a3-c2f7-73d6-84dd-ca9a4ea2fd8d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevolvingCreditFacilityMember_019e26a3-c2f7-71e7-9f97-912b8b3d1359" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RevolvingCreditFacilityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CreditFacilityDomain_019e26a3-c2f7-73d6-84dd-ca9a4ea2fd8d" xlink:to="loc_us-gaap_RevolvingCreditFacilityMember_019e26a3-c2f7-71e7-9f97-912b8b3d1359" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_019e26a3-c2f7-7dc9-86a0-9c6341b91631" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_019e26a3-c2f7-7e69-866f-79473edf31bb" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_019e26a3-c2f7-7dc9-86a0-9c6341b91631" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_019e26a3-c2f7-7dc9-86a0-9c6341b91631_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_019e26a3-c2f7-7dc9-86a0-9c6341b91631" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_019e26a3-c2f7-7dc9-86a0-9c6341b91631_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_019e26a3-c2f7-7608-a2d0-34f421251ee6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_019e26a3-c2f7-7dc9-86a0-9c6341b91631" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_019e26a3-c2f7-7608-a2d0-34f421251ee6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CustomerRelationshipsMember_019e26a3-c2f7-7038-9be9-84d8b7b37afc" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CustomerRelationshipsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_019e26a3-c2f7-7608-a2d0-34f421251ee6" xlink:to="loc_us-gaap_CustomerRelationshipsMember_019e26a3-c2f7-7038-9be9-84d8b7b37afc" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_hri_BusinessAcquisitionNumberOfBranches_019e26a3-c2f7-78fe-bb18-da340984633e" xlink:href="hri-20260630.xsd#hri_BusinessAcquisitionNumberOfBranches"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_019e26a3-c2f7-7465-b08f-eb1fa04ba8a5" xlink:to="loc_hri_BusinessAcquisitionNumberOfBranches_019e26a3-c2f7-78fe-bb18-da340984633e" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NumberOfStatesInWhichEntityOperates_019e26a3-c2f7-7d2f-91cc-7358b12be26d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NumberOfStatesInWhichEntityOperates"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_019e26a3-c2f7-7465-b08f-eb1fa04ba8a5" xlink:to="loc_us-gaap_NumberOfStatesInWhichEntityOperates_019e26a3-c2f7-7d2f-91cc-7358b12be26d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionSharePrice_019e26a3-c2f7-709e-b89c-425cb6180488" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessAcquisitionSharePrice"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_019e26a3-c2f7-7465-b08f-eb1fa04ba8a5" xlink:to="loc_us-gaap_BusinessAcquisitionSharePrice_019e26a3-c2f7-709e-b89c-425cb6180488" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_hri_BusinessCombinationConsiderationTransferredStockConversionRatio_019e26a3-c2f7-72b9-bb4c-22fd68dda0a2" xlink:href="hri-20260630.xsd#hri_BusinessCombinationConsiderationTransferredStockConversionRatio"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_019e26a3-c2f7-7465-b08f-eb1fa04ba8a5" xlink:to="loc_hri_BusinessCombinationConsiderationTransferredStockConversionRatio_019e26a3-c2f7-72b9-bb4c-22fd68dda0a2" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationConsiderationTransferred1_019e26a3-c2f7-7153-bbe1-85da94ffa81d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessCombinationConsiderationTransferred1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_019e26a3-c2f7-7465-b08f-eb1fa04ba8a5" xlink:to="loc_us-gaap_BusinessCombinationConsiderationTransferred1_019e26a3-c2f7-7153-bbe1-85da94ffa81d" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsToAcquireBusinessesGross_019e26a3-c2f7-7db1-8af8-94f470f54ecd" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PaymentsToAcquireBusinessesGross"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_019e26a3-c2f7-7465-b08f-eb1fa04ba8a5" xlink:to="loc_us-gaap_PaymentsToAcquireBusinessesGross_019e26a3-c2f7-7db1-8af8-94f470f54ecd" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssued_019e26a3-c2f7-7c64-a954-70fa5c16f3dc" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssued"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_019e26a3-c2f7-7465-b08f-eb1fa04ba8a5" xlink:to="loc_us-gaap_BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssued_019e26a3-c2f7-7c64-a954-70fa5c16f3dc" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionEquityInterestIssuedOrIssuableValueAssigned_019e26a3-c2f7-72c1-bc11-a2d9d803e27f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessAcquisitionEquityInterestIssuedOrIssuableValueAssigned"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_019e26a3-c2f7-7465-b08f-eb1fa04ba8a5" xlink:to="loc_us-gaap_BusinessAcquisitionEquityInterestIssuedOrIssuableValueAssigned_019e26a3-c2f7-72c1-bc11-a2d9d803e27f" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationConsiderationTransferredLiabilitiesIncurred_019e26a3-c2f7-7306-b8b2-de42db4bc642" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessCombinationConsiderationTransferredLiabilitiesIncurred"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_019e26a3-c2f7-7465-b08f-eb1fa04ba8a5" xlink:to="loc_us-gaap_BusinessCombinationConsiderationTransferredLiabilitiesIncurred_019e26a3-c2f7-7306-b8b2-de42db4bc642" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentFaceAmount_019e26a3-c2f7-7409-868b-1237a0dbe009" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentFaceAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_019e26a3-c2f7-7465-b08f-eb1fa04ba8a5" xlink:to="loc_us-gaap_DebtInstrumentFaceAmount_019e26a3-c2f7-7409-868b-1237a0dbe009" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentCarryingAmount_019e26a3-c2f7-7d89-8f12-cbaa7d64c5f9" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentCarryingAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_019e26a3-c2f7-7465-b08f-eb1fa04ba8a5" xlink:to="loc_us-gaap_DebtInstrumentCarryingAmount_019e26a3-c2f7-7d89-8f12-cbaa7d64c5f9" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RepaymentsOfSecuredDebt_019e26a3-c2f7-7d98-b110-040d69d92f61" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RepaymentsOfSecuredDebt"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_019e26a3-c2f7-7465-b08f-eb1fa04ba8a5" xlink:to="loc_us-gaap_RepaymentsOfSecuredDebt_019e26a3-c2f7-7d98-b110-040d69d92f61" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AcquiredFiniteLivedIntangibleAssetsWeightedAverageUsefulLife_019e26a3-c2f7-7256-97a5-2db181e0b9c7" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AcquiredFiniteLivedIntangibleAssetsWeightedAverageUsefulLife"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_019e26a3-c2f7-7465-b08f-eb1fa04ba8a5" xlink:to="loc_us-gaap_AcquiredFiniteLivedIntangibleAssetsWeightedAverageUsefulLife_019e26a3-c2f7-7256-97a5-2db181e0b9c7" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GoodwillPurchaseAccountingAdjustments_019e26a3-c2f7-7f4f-909c-bac872415c44" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_GoodwillPurchaseAccountingAdjustments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_019e26a3-c2f7-7465-b08f-eb1fa04ba8a5" xlink:to="loc_us-gaap_GoodwillPurchaseAccountingAdjustments_019e26a3-c2f7-7f4f-909c-bac872415c44" xlink:type="arc" order="13"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.hertzequip.com/role/BusinessCombinationsScheduleofPurchasePriceAllocationDetails" xlink:type="simple" xlink:href="hri-20260630.xsd#BusinessCombinationsScheduleofPurchasePriceAllocationDetails"/>
  <link:definitionLink xlink:role="http://www.hertzequip.com/role/BusinessCombinationsScheduleofPurchasePriceAllocationDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionLineItems_019e26a3-c2f7-7f94-9a74-0eac3fa53633" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessAcquisitionLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_019e26a3-c2f7-76d7-9cce-c3ae79ed3494" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_019e26a3-c2f7-7f94-9a74-0eac3fa53633" xlink:to="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_019e26a3-c2f7-76d7-9cce-c3ae79ed3494" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAxis_019e26a3-c2f7-7127-8bdc-16cf090e8d63" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessAcquisitionAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_019e26a3-c2f7-76d7-9cce-c3ae79ed3494" xlink:to="loc_us-gaap_BusinessAcquisitionAxis_019e26a3-c2f7-7127-8bdc-16cf090e8d63" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_019e26a3-c2f7-7127-8bdc-16cf090e8d63_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessAcquisitionAcquireeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_019e26a3-c2f7-7127-8bdc-16cf090e8d63" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_019e26a3-c2f7-7127-8bdc-16cf090e8d63_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_019e26a3-c2f7-7f00-b553-195bc8030ce8" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessAcquisitionAcquireeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_019e26a3-c2f7-7127-8bdc-16cf090e8d63" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_019e26a3-c2f7-7f00-b553-195bc8030ce8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_hri_HEEquipmentServicesIncMember_019e26a3-c2f7-7b8a-80de-2d2c9b2a4e9c" xlink:href="hri-20260630.xsd#hri_HEEquipmentServicesIncMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_019e26a3-c2f7-7f00-b553-195bc8030ce8" xlink:to="loc_hri_HEEquipmentServicesIncMember_019e26a3-c2f7-7b8a-80de-2d2c9b2a4e9c" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCashAndEquivalents_019e26a3-c2f7-78a9-94f0-826af7b0e8de" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCashAndEquivalents"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_019e26a3-c2f7-7f94-9a74-0eac3fa53633" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCashAndEquivalents_019e26a3-c2f7-78a9-94f0-826af7b0e8de" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsReceivables_019e26a3-c2f7-707d-91e9-f07361021c89" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsReceivables"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_019e26a3-c2f7-7f94-9a74-0eac3fa53633" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsReceivables_019e26a3-c2f7-707d-91e9-f07361021c89" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsOther_019e26a3-c2f7-7fa8-9577-3dc3523022f1" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsOther"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_019e26a3-c2f7-7f94-9a74-0eac3fa53633" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsOther_019e26a3-c2f7-7fa8-9577-3dc3523022f1" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedEquipment_019e26a3-c2f7-74db-a2e6-4914e2a8b188" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedEquipment"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_019e26a3-c2f7-7f94-9a74-0eac3fa53633" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedEquipment_019e26a3-c2f7-74db-a2e6-4914e2a8b188" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment_019e26a3-c2f7-7acb-aafb-09482fafdc20" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_019e26a3-c2f7-7f94-9a74-0eac3fa53633" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment_019e26a3-c2f7-7acb-aafb-09482fafdc20" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_hri_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOperatingLeaseRightOfUseAsset_019e26a3-c2f7-77d7-8c24-cbc89510fe16" xlink:href="hri-20260630.xsd#hri_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOperatingLeaseRightOfUseAsset"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_019e26a3-c2f7-7f94-9a74-0eac3fa53633" xlink:to="loc_hri_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOperatingLeaseRightOfUseAsset_019e26a3-c2f7-77d7-8c24-cbc89510fe16" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles_019e26a3-c2f7-71d0-a13f-3008e8ef92a9" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_019e26a3-c2f7-7f94-9a74-0eac3fa53633" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles_019e26a3-c2f7-71d0-a13f-3008e8ef92a9" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets_019e26a3-c2f7-7922-8e18-a8d2ba90eb0c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_019e26a3-c2f7-7f94-9a74-0eac3fa53633" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets_019e26a3-c2f7-7922-8e18-a8d2ba90eb0c" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilities_019e26a3-c2f7-70db-bd34-dade19a336b2" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_019e26a3-c2f7-7f94-9a74-0eac3fa53633" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilities_019e26a3-c2f7-70db-bd34-dade19a336b2" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_hri_BusinessCombinationRecognizedLiabilityAssumedOperatingLeaseLiabilities_019e26a3-c2f7-7970-9ecb-0349f35d4c1f" xlink:href="hri-20260630.xsd#hri_BusinessCombinationRecognizedLiabilityAssumedOperatingLeaseLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_019e26a3-c2f7-7f94-9a74-0eac3fa53633" xlink:to="loc_hri_BusinessCombinationRecognizedLiabilityAssumedOperatingLeaseLiabilities_019e26a3-c2f7-7970-9ecb-0349f35d4c1f" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_hri_BusinessCombinationRecognizedLiabilityAssumedFinanceLeaseLiabilities_019e26a3-c2f7-76b0-8a00-b63a1992c06b" xlink:href="hri-20260630.xsd#hri_BusinessCombinationRecognizedLiabilityAssumedFinanceLeaseLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_019e26a3-c2f7-7f94-9a74-0eac3fa53633" xlink:to="loc_hri_BusinessCombinationRecognizedLiabilityAssumedFinanceLeaseLiabilities_019e26a3-c2f7-76b0-8a00-b63a1992c06b" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedDeferredTaxLiabilities_019e26a3-c2f7-79ce-b226-b783912792e9" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedDeferredTaxLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_019e26a3-c2f7-7f94-9a74-0eac3fa53633" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedDeferredTaxLiabilities_019e26a3-c2f7-79ce-b226-b783912792e9" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet_019e26a3-c2f7-7479-8336-14aa77e63c46" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_019e26a3-c2f7-7f94-9a74-0eac3fa53633" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet_019e26a3-c2f7-7479-8336-14aa77e63c46" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Goodwill_019e26a3-c2f7-73b9-8229-6b34b088f547" 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_BusinessAcquisitionLineItems_019e26a3-c2f7-7f94-9a74-0eac3fa53633" xlink:to="loc_us-gaap_Goodwill_019e26a3-c2f7-73b9-8229-6b34b088f547" xlink:type="arc" order="13"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet_019e26a3-c2f7-7932-a9af-56890ad6098f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_019e26a3-c2f7-7f94-9a74-0eac3fa53633" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet_019e26a3-c2f7-7932-a9af-56890ad6098f" xlink:type="arc" order="14"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.hertzequip.com/role/GoodwillandIntangibleAssetsScheduleofIntangibleAssetsDetails" xlink:type="simple" xlink:href="hri-20260630.xsd#GoodwillandIntangibleAssetsScheduleofIntangibleAssetsDetails"/>
  <link:definitionLink xlink:role="http://www.hertzequip.com/role/GoodwillandIntangibleAssetsScheduleofIntangibleAssetsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_019e26a3-c3e6-7079-9396-0e2305e143db" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FiniteLivedIntangibleAssetsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_019e26a3-c3e6-795d-bc0f-29f22e10ebdb" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_019e26a3-c3e6-7079-9396-0e2305e143db" xlink:to="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_019e26a3-c3e6-795d-bc0f-29f22e10ebdb" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_019e26a3-c3e6-7799-928c-0c4d64b35a49" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_019e26a3-c3e6-795d-bc0f-29f22e10ebdb" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_019e26a3-c3e6-7799-928c-0c4d64b35a49" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_019e26a3-c3e6-7799-928c-0c4d64b35a49_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_019e26a3-c3e6-7799-928c-0c4d64b35a49" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_019e26a3-c3e6-7799-928c-0c4d64b35a49_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_019e26a3-c3e6-7748-84c1-daf6bd1df44e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_019e26a3-c3e6-7799-928c-0c4d64b35a49" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_019e26a3-c3e6-7748-84c1-daf6bd1df44e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CustomerRelationshipsMember_019e26a3-c3e6-721a-af40-baa52c3406fd" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CustomerRelationshipsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_019e26a3-c3e6-7748-84c1-daf6bd1df44e" xlink:to="loc_us-gaap_CustomerRelationshipsMember_019e26a3-c3e6-721a-af40-baa52c3406fd" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NoncompeteAgreementsMember_019e26a3-c3e6-79ec-b931-e8ebf3aa0d02" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NoncompeteAgreementsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_019e26a3-c3e6-7748-84c1-daf6bd1df44e" xlink:to="loc_us-gaap_NoncompeteAgreementsMember_019e26a3-c3e6-79ec-b931-e8ebf3aa0d02" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SoftwareDevelopmentMember_019e26a3-c3e6-78b1-83d2-1a4edcece2aa" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SoftwareDevelopmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_019e26a3-c3e6-7748-84c1-daf6bd1df44e" xlink:to="loc_us-gaap_SoftwareDevelopmentMember_019e26a3-c3e6-78b1-83d2-1a4edcece2aa" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_hri_SoftwareInternallyDevelopedCapitalizedMember_019f7ffb-c4b0-7d87-8046-52f8585ff03d" xlink:href="hri-20260630.xsd#hri_SoftwareInternallyDevelopedCapitalizedMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_019e26a3-c3e6-7748-84c1-daf6bd1df44e" xlink:to="loc_hri_SoftwareInternallyDevelopedCapitalizedMember_019f7ffb-c4b0-7d87-8046-52f8585ff03d" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsGross_019e26a3-c3e6-7882-952f-35a17be59aad" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FiniteLivedIntangibleAssetsGross"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_019e26a3-c3e6-7079-9396-0e2305e143db" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsGross_019e26a3-c3e6-7882-952f-35a17be59aad" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_019e26a3-c3e6-7b1f-9ecd-0194b201052e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_019e26a3-c3e6-7079-9396-0e2305e143db" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_019e26a3-c3e6-7b1f-9ecd-0194b201052e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsNet_019e26a3-c3e6-7b48-9eee-89a915746da6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FiniteLivedIntangibleAssetsNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_019e26a3-c3e6-7079-9396-0e2305e143db" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsNet_019e26a3-c3e6-7b48-9eee-89a915746da6" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassLineItems_019e26a3-c3e6-742e-9f26-0bed4718219c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfIndefiniteLivedIntangibleAssetsTable_019e26a3-c3e6-7960-b7ad-0e4cae48ee23" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfIndefiniteLivedIntangibleAssetsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassLineItems_019e26a3-c3e6-742e-9f26-0bed4718219c" xlink:to="loc_us-gaap_ScheduleOfIndefiniteLivedIntangibleAssetsTable_019e26a3-c3e6-7960-b7ad-0e4cae48ee23" xlink:type="arc" order="2" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis_019e26a3-c3e6-71b1-b5b0-3214033d75f1" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfIndefiniteLivedIntangibleAssetsTable_019e26a3-c3e6-7960-b7ad-0e4cae48ee23" xlink:to="loc_us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis_019e26a3-c3e6-71b1-b5b0-3214033d75f1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain_019e26a3-c3e6-71b1-b5b0-3214033d75f1_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis_019e26a3-c3e6-71b1-b5b0-3214033d75f1" xlink:to="loc_us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain_019e26a3-c3e6-71b1-b5b0-3214033d75f1_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain_019e26a3-c3e6-7325-b43b-5f11c5bfb719" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis_019e26a3-c3e6-71b1-b5b0-3214033d75f1" xlink:to="loc_us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain_019e26a3-c3e6-7325-b43b-5f11c5bfb719" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TradeNamesMember_019e26a3-c3e6-7594-b859-e24197bfe349" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_TradeNamesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain_019e26a3-c3e6-7325-b43b-5f11c5bfb719" xlink:to="loc_us-gaap_TradeNamesMember_019e26a3-c3e6-7594-b859-e24197bfe349" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill_019e26a3-c3e6-7411-b8c7-e67a79b8ef2e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassLineItems_019e26a3-c3e6-742e-9f26-0bed4718219c" xlink:to="loc_us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill_019e26a3-c3e6-7411-b8c7-e67a79b8ef2e" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.hertzequip.com/role/LeasesNarrativeDetails" xlink:type="simple" xlink:href="hri-20260630.xsd#LeasesNarrativeDetails"/>
  <link:definitionLink xlink:role="http://www.hertzequip.com/role/LeasesNarrativeDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeLeaseDescriptionLineItems_019e26a3-c3e6-795d-a953-40815ad9bd71" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LesseeLeaseDescriptionLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeLeaseDescriptionTable_019e26a3-c3e6-7066-becd-59151c6f9162" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LesseeLeaseDescriptionTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_LesseeLeaseDescriptionLineItems_019e26a3-c3e6-795d-a953-40815ad9bd71" xlink:to="loc_us-gaap_LesseeLeaseDescriptionTable_019e26a3-c3e6-7066-becd-59151c6f9162" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_019e26a3-c3e6-7198-91ea-76327c6da038" 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_LesseeLeaseDescriptionTable_019e26a3-c3e6-7066-becd-59151c6f9162" xlink:to="loc_srt_RangeAxis_019e26a3-c3e6-7198-91ea-76327c6da038" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_019e26a3-c3e6-7198-91ea-76327c6da038_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_019e26a3-c3e6-7198-91ea-76327c6da038" xlink:to="loc_srt_RangeMember_019e26a3-c3e6-7198-91ea-76327c6da038_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_019e26a3-c3e6-7706-abea-9b5e5042e916" 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_019e26a3-c3e6-7198-91ea-76327c6da038" xlink:to="loc_srt_RangeMember_019e26a3-c3e6-7706-abea-9b5e5042e916" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_019e26a3-c3e6-764a-bea0-2d131e0eb042" 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_019e26a3-c3e6-7706-abea-9b5e5042e916" xlink:to="loc_srt_MaximumMember_019e26a3-c3e6-764a-bea0-2d131e0eb042" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_hri_LesseeRemainingLeaseTerm_019e26a3-c3e6-7e94-b2c5-2dc48f5ec814" xlink:href="hri-20260630.xsd#hri_LesseeRemainingLeaseTerm"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LesseeLeaseDescriptionLineItems_019e26a3-c3e6-795d-a953-40815ad9bd71" xlink:to="loc_hri_LesseeRemainingLeaseTerm_019e26a3-c3e6-7e94-b2c5-2dc48f5ec814" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_hri_LesseeRenewalTerm_019e26a3-c3e6-7a7d-a937-683d87f8eaf9" xlink:href="hri-20260630.xsd#hri_LesseeRenewalTerm"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LesseeLeaseDescriptionLineItems_019e26a3-c3e6-795d-a953-40815ad9bd71" xlink:to="loc_hri_LesseeRenewalTerm_019e26a3-c3e6-7a7d-a937-683d87f8eaf9" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.hertzequip.com/role/DebtScheduleofDebtDetails" xlink:type="simple" xlink:href="hri-20260630.xsd#DebtScheduleofDebtDetails"/>
  <link:definitionLink xlink:role="http://www.hertzequip.com/role/DebtScheduleofDebtDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentLineItems_019e26a3-c3e6-7e41-a1d3-660a7487d260" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentTable_019e26a3-c3e6-7cd4-8abb-f49df41fbe9c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019e26a3-c3e6-7e41-a1d3-660a7487d260" xlink:to="loc_us-gaap_DebtInstrumentTable_019e26a3-c3e6-7cd4-8abb-f49df41fbe9c" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_019e26a3-c3e6-7e1e-9de9-15cbee06b4b6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongtermDebtTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_019e26a3-c3e6-7cd4-8abb-f49df41fbe9c" xlink:to="loc_us-gaap_LongtermDebtTypeAxis_019e26a3-c3e6-7e1e-9de9-15cbee06b4b6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_019e26a3-c3e6-7e1e-9de9-15cbee06b4b6_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_019e26a3-c3e6-7e1e-9de9-15cbee06b4b6" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_019e26a3-c3e6-7e1e-9de9-15cbee06b4b6_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_019e26a3-c3e6-7eb3-a15d-004b869caaa0" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_019e26a3-c3e6-7e1e-9de9-15cbee06b4b6" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_019e26a3-c3e6-7eb3-a15d-004b869caaa0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SeniorNotesMember_019e26a3-c3e6-7190-8795-fc213507ffc3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SeniorNotesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_019e26a3-c3e6-7eb3-a15d-004b869caaa0" xlink:to="loc_us-gaap_SeniorNotesMember_019e26a3-c3e6-7190-8795-fc213507ffc3" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditMember_019e26a3-c3e6-7d1e-86b4-e12a0c92bf33" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LineOfCreditMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_019e26a3-c3e6-7eb3-a15d-004b869caaa0" xlink:to="loc_us-gaap_LineOfCreditMember_019e26a3-c3e6-7d1e-86b4-e12a0c92bf33" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SecuredDebtMember_019e26a3-c3e6-7a6b-adb6-b3202075ef17" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SecuredDebtMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_019e26a3-c3e6-7eb3-a15d-004b869caaa0" xlink:to="loc_us-gaap_SecuredDebtMember_019e26a3-c3e6-7a6b-adb6-b3202075ef17" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentAxis_019e26a3-c3e6-7cf1-b219-5ceaf36ef909" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_019e26a3-c3e6-7cd4-8abb-f49df41fbe9c" xlink:to="loc_us-gaap_DebtInstrumentAxis_019e26a3-c3e6-7cf1-b219-5ceaf36ef909" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_019e26a3-c3e6-7cf1-b219-5ceaf36ef909_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DebtInstrumentAxis_019e26a3-c3e6-7cf1-b219-5ceaf36ef909" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_019e26a3-c3e6-7cf1-b219-5ceaf36ef909_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_019e26a3-c3e6-7be1-9baa-cbf39a474b47" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DebtInstrumentAxis_019e26a3-c3e6-7cf1-b219-5ceaf36ef909" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_019e26a3-c3e6-7be1-9baa-cbf39a474b47" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_hri_A2029NotesMember_019e26a3-c3e6-7019-adab-c8f3db848517" xlink:href="hri-20260630.xsd#hri_A2029NotesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_019e26a3-c3e6-7be1-9baa-cbf39a474b47" xlink:to="loc_hri_A2029NotesMember_019e26a3-c3e6-7019-adab-c8f3db848517" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_hri_A2030NotesMember_019e26a3-c3e6-7b4a-bd31-4af45daaab62" xlink:href="hri-20260630.xsd#hri_A2030NotesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_019e26a3-c3e6-7be1-9baa-cbf39a474b47" xlink:to="loc_hri_A2030NotesMember_019e26a3-c3e6-7b4a-bd31-4af45daaab62" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_hri_A2031NotesMember_019e26a3-c3e6-7a3f-b999-ed5967ad2346" xlink:href="hri-20260630.xsd#hri_A2031NotesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_019e26a3-c3e6-7be1-9baa-cbf39a474b47" xlink:to="loc_hri_A2031NotesMember_019e26a3-c3e6-7a3f-b999-ed5967ad2346" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_hri_A2033NotesMember_019e26a3-c3e6-76fb-9ea5-68ee8f34905e" xlink:href="hri-20260630.xsd#hri_A2033NotesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_019e26a3-c3e6-7be1-9baa-cbf39a474b47" xlink:to="loc_hri_A2033NotesMember_019e26a3-c3e6-76fb-9ea5-68ee8f34905e" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_hri_A2034NotesMember_019e26a3-c3e6-7cca-93ea-91c9c78f64ec" xlink:href="hri-20260630.xsd#hri_A2034NotesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_019e26a3-c3e6-7be1-9baa-cbf39a474b47" xlink:to="loc_hri_A2034NotesMember_019e26a3-c3e6-7cca-93ea-91c9c78f64ec" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_hri_ABLCreditFacilityMember_019e26a3-c3e6-7e45-bab7-4922eab4e165" xlink:href="hri-20260630.xsd#hri_ABLCreditFacilityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_019e26a3-c3e6-7be1-9baa-cbf39a474b47" xlink:to="loc_hri_ABLCreditFacilityMember_019e26a3-c3e6-7e45-bab7-4922eab4e165" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_hri_SeniorSecuredTermLoanMember_019e26a3-c3e6-7f38-afc8-b72fe3517d0b" xlink:href="hri-20260630.xsd#hri_SeniorSecuredTermLoanMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_019e26a3-c3e6-7be1-9baa-cbf39a474b47" xlink:to="loc_hri_SeniorSecuredTermLoanMember_019e26a3-c3e6-7f38-afc8-b72fe3517d0b" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetBackedSecuritiesSecuritizedLoansAndReceivablesMember_019e26a3-c3e6-7a6b-b7bb-43ed20f0af16" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AssetBackedSecuritiesSecuritizedLoansAndReceivablesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_019e26a3-c3e6-7be1-9baa-cbf39a474b47" xlink:to="loc_us-gaap_AssetBackedSecuritiesSecuritizedLoansAndReceivablesMember_019e26a3-c3e6-7a6b-b7bb-43ed20f0af16" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityAxis_019e26a3-c3e6-73c8-961a-6cf7faff389f" 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_us-gaap_DebtInstrumentTable_019e26a3-c3e6-7cd4-8abb-f49df41fbe9c" xlink:to="loc_us-gaap_CreditFacilityAxis_019e26a3-c3e6-73c8-961a-6cf7faff389f" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityDomain_019e26a3-c3e6-73c8-961a-6cf7faff389f_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_019e26a3-c3e6-73c8-961a-6cf7faff389f" xlink:to="loc_us-gaap_CreditFacilityDomain_019e26a3-c3e6-73c8-961a-6cf7faff389f_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityDomain_019e26a3-c3e6-771e-9917-aa68dda572a0" 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_019e26a3-c3e6-73c8-961a-6cf7faff389f" xlink:to="loc_us-gaap_CreditFacilityDomain_019e26a3-c3e6-771e-9917-aa68dda572a0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevolvingCreditFacilityMember_019e26a3-c3e6-79be-9011-b737a57dc423" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RevolvingCreditFacilityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CreditFacilityDomain_019e26a3-c3e6-771e-9917-aa68dda572a0" xlink:to="loc_us-gaap_RevolvingCreditFacilityMember_019e26a3-c3e6-79be-9011-b737a57dc423" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditMember_019e26a3-c3e6-7a28-b929-a70ada18eff5" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LineOfCreditMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CreditFacilityDomain_019e26a3-c3e6-771e-9917-aa68dda572a0" xlink:to="loc_us-gaap_LineOfCreditMember_019e26a3-c3e6-7a28-b929-a70ada18eff5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentInterestRateEffectivePercentage_019e26a3-c3e6-71c0-a2ea-24e77e5cf288" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentInterestRateEffectivePercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019e26a3-c3e6-7e41-a1d3-660a7487d260" xlink:to="loc_us-gaap_DebtInstrumentInterestRateEffectivePercentage_019e26a3-c3e6-71c0-a2ea-24e77e5cf288" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinanceLeaseWeightedAverageDiscountRatePercent_019e26a3-c3e6-794b-aabf-752af8056f79" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinanceLeaseWeightedAverageDiscountRatePercent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019e26a3-c3e6-7e41-a1d3-660a7487d260" xlink:to="loc_us-gaap_FinanceLeaseWeightedAverageDiscountRatePercent_019e26a3-c3e6-794b-aabf-752af8056f79" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_019e26a3-c3e6-7e86-94bf-bc306a353cf9" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentInterestRateStatedPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019e26a3-c3e6-7e41-a1d3-660a7487d260" xlink:to="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_019e26a3-c3e6-7e86-94bf-bc306a353cf9" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentCarryingAmount_019e26a3-c3e6-7784-89fe-1eeaacd6d377" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentCarryingAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019e26a3-c3e6-7e41-a1d3-660a7487d260" xlink:to="loc_us-gaap_DebtInstrumentCarryingAmount_019e26a3-c3e6-7784-89fe-1eeaacd6d377" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinanceLeaseLiability_019e26a3-c3e6-7eed-b8ef-c2642a46f3f6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinanceLeaseLiability"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019e26a3-c3e6-7e41-a1d3-660a7487d260" xlink:to="loc_us-gaap_FinanceLeaseLiability_019e26a3-c3e6-7eed-b8ef-c2642a46f3f6" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet_019e26a3-c3e6-79c1-8e06-36301ee2702c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019e26a3-c3e6-7e41-a1d3-660a7487d260" xlink:to="loc_us-gaap_DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet_019e26a3-c3e6-79c1-8e06-36301ee2702c" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtAndCapitalLeaseObligationsIncludingCurrentMaturities_019e26a3-c3e6-7a70-8ade-3927bbe9f577" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongTermDebtAndCapitalLeaseObligationsIncludingCurrentMaturities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019e26a3-c3e6-7e41-a1d3-660a7487d260" xlink:to="loc_us-gaap_LongTermDebtAndCapitalLeaseObligationsIncludingCurrentMaturities_019e26a3-c3e6-7a70-8ade-3927bbe9f577" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtAndCapitalLeaseObligationsCurrent_019e26a3-c3e6-7be1-a25e-ecd8f7f7bf96" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongTermDebtAndCapitalLeaseObligationsCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019e26a3-c3e6-7e41-a1d3-660a7487d260" xlink:to="loc_us-gaap_LongTermDebtAndCapitalLeaseObligationsCurrent_019e26a3-c3e6-7be1-a25e-ecd8f7f7bf96" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtAndCapitalLeaseObligations_019e26a3-c3e6-74c1-afb2-c27c6af13bed" 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_DebtInstrumentLineItems_019e26a3-c3e6-7e41-a1d3-660a7487d260" xlink:to="loc_us-gaap_LongTermDebtAndCapitalLeaseObligations_019e26a3-c3e6-74c1-afb2-c27c6af13bed" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtIssuanceCostsLineOfCreditArrangementsNet_019e26a3-c3e6-7b34-a5ca-f7c018b25648" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtIssuanceCostsLineOfCreditArrangementsNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019e26a3-c3e6-7e41-a1d3-660a7487d260" xlink:to="loc_us-gaap_DebtIssuanceCostsLineOfCreditArrangementsNet_019e26a3-c3e6-7b34-a5ca-f7c018b25648" xlink:type="arc" order="9"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.hertzequip.com/role/DebtNarrativeDetails" xlink:type="simple" xlink:href="hri-20260630.xsd#DebtNarrativeDetails"/>
  <link:definitionLink xlink:role="http://www.hertzequip.com/role/DebtNarrativeDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentLineItems_019e26a3-c3e6-7d22-91ed-fcab2ed1cc1e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentTable_019e26a3-c3e6-753d-a168-9bb06576b779" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019e26a3-c3e6-7d22-91ed-fcab2ed1cc1e" xlink:to="loc_us-gaap_DebtInstrumentTable_019e26a3-c3e6-753d-a168-9bb06576b779" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_019e26a3-c3e6-74db-a703-c696f6f0d7a4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongtermDebtTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_019e26a3-c3e6-753d-a168-9bb06576b779" xlink:to="loc_us-gaap_LongtermDebtTypeAxis_019e26a3-c3e6-74db-a703-c696f6f0d7a4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_019e26a3-c3e6-74db-a703-c696f6f0d7a4_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_019e26a3-c3e6-74db-a703-c696f6f0d7a4" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_019e26a3-c3e6-74db-a703-c696f6f0d7a4_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_019e26a3-c3e6-74c7-8e0e-c9c3116b0d33" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_019e26a3-c3e6-74db-a703-c696f6f0d7a4" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_019e26a3-c3e6-74c7-8e0e-c9c3116b0d33" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetBackedSecuritiesSecuritizedLoansAndReceivablesMember_019e26a3-c3e6-7786-8f6b-57d906bc4676" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AssetBackedSecuritiesSecuritizedLoansAndReceivablesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_019e26a3-c3e6-74c7-8e0e-c9c3116b0d33" xlink:to="loc_us-gaap_AssetBackedSecuritiesSecuritizedLoansAndReceivablesMember_019e26a3-c3e6-7786-8f6b-57d906bc4676" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditMember_019e26a3-c3e6-7bfe-9ae9-a3a0bcc45008" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LineOfCreditMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_019e26a3-c3e6-74c7-8e0e-c9c3116b0d33" xlink:to="loc_us-gaap_LineOfCreditMember_019e26a3-c3e6-7bfe-9ae9-a3a0bcc45008" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SecuredDebtMember_019f660e-6cfc-70f2-a1c8-d9569ca1034a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SecuredDebtMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_019e26a3-c3e6-74c7-8e0e-c9c3116b0d33" xlink:to="loc_us-gaap_SecuredDebtMember_019f660e-6cfc-70f2-a1c8-d9569ca1034a" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityAxis_019e26a3-c3e6-78dd-99c3-fc67477d29de" 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_us-gaap_DebtInstrumentTable_019e26a3-c3e6-753d-a168-9bb06576b779" xlink:to="loc_us-gaap_CreditFacilityAxis_019e26a3-c3e6-78dd-99c3-fc67477d29de" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityDomain_019e26a3-c3e6-78dd-99c3-fc67477d29de_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_019e26a3-c3e6-78dd-99c3-fc67477d29de" xlink:to="loc_us-gaap_CreditFacilityDomain_019e26a3-c3e6-78dd-99c3-fc67477d29de_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityDomain_019e26a3-c3e6-74e0-9561-a78d252f4079" 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_019e26a3-c3e6-78dd-99c3-fc67477d29de" xlink:to="loc_us-gaap_CreditFacilityDomain_019e26a3-c3e6-74e0-9561-a78d252f4079" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LetterOfCreditMember_019e26a3-c3e6-741b-9306-386e905418dc" 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_019e26a3-c3e6-74e0-9561-a78d252f4079" xlink:to="loc_us-gaap_LetterOfCreditMember_019e26a3-c3e6-741b-9306-386e905418dc" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentAxis_019f4b3e-3058-7a1b-b81e-1071c0660f5d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_019e26a3-c3e6-753d-a168-9bb06576b779" xlink:to="loc_us-gaap_DebtInstrumentAxis_019f4b3e-3058-7a1b-b81e-1071c0660f5d" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_019f4b3e-3058-7a1b-b81e-1071c0660f5d_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DebtInstrumentAxis_019f4b3e-3058-7a1b-b81e-1071c0660f5d" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_019f4b3e-3058-7a1b-b81e-1071c0660f5d_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_019f4b3e-3058-7c24-a3fa-4194275c8e5a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DebtInstrumentAxis_019f4b3e-3058-7a1b-b81e-1071c0660f5d" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_019f4b3e-3058-7c24-a3fa-4194275c8e5a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_hri_ABLCreditFacilityMember_019f4b3e-3058-7a50-9792-edb9e5358c7f" xlink:href="hri-20260630.xsd#hri_ABLCreditFacilityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_019f4b3e-3058-7c24-a3fa-4194275c8e5a" xlink:to="loc_hri_ABLCreditFacilityMember_019f4b3e-3058-7a50-9792-edb9e5358c7f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_hri_SuretyBackedLettersOfCreditMember_019f7f87-35da-7965-aa96-8ce267142fad" xlink:href="hri-20260630.xsd#hri_SuretyBackedLettersOfCreditMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_019f4b3e-3058-7c24-a3fa-4194275c8e5a" xlink:to="loc_hri_SuretyBackedLettersOfCreditMember_019f7f87-35da-7965-aa96-8ce267142fad" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_019e26a3-c3e6-77df-acf1-26a6b94a33c5" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019e26a3-c3e6-7d22-91ed-fcab2ed1cc1e" xlink:to="loc_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_019e26a3-c3e6-77df-acf1-26a6b94a33c5" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LettersOfCreditOutstandingAmount_019e26a3-c3e6-7385-ae42-26381ed8c612" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LettersOfCreditOutstandingAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019e26a3-c3e6-7d22-91ed-fcab2ed1cc1e" xlink:to="loc_us-gaap_LettersOfCreditOutstandingAmount_019e26a3-c3e6-7385-ae42-26381ed8c612" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCredit_019e26a3-c3e6-71ce-889c-4bb431d534be" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LineOfCredit"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019e26a3-c3e6-7d22-91ed-fcab2ed1cc1e" xlink:to="loc_us-gaap_LineOfCredit_019e26a3-c3e6-71ce-889c-4bb431d534be" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity_019e26a3-c3e6-739e-96ad-d8ed2f2e4ea3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019e26a3-c3e6-7d22-91ed-fcab2ed1cc1e" xlink:to="loc_us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity_019e26a3-c3e6-739e-96ad-d8ed2f2e4ea3" xlink:type="arc" order="3"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.hertzequip.com/role/DebtScheduleofOutstandingBorrowingsDetails" xlink:type="simple" xlink:href="hri-20260630.xsd#DebtScheduleofOutstandingBorrowingsDetails"/>
  <link:definitionLink xlink:role="http://www.hertzequip.com/role/DebtScheduleofOutstandingBorrowingsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditFacilityLineItems_019e26a3-c3e6-7f6b-b116-39e0e556c994" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LineOfCreditFacilityLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditFacilityTable_019e26a3-c3e6-74d8-8378-f9f794477626" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LineOfCreditFacilityTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_LineOfCreditFacilityLineItems_019e26a3-c3e6-7f6b-b116-39e0e556c994" xlink:to="loc_us-gaap_LineOfCreditFacilityTable_019e26a3-c3e6-74d8-8378-f9f794477626" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_019e26a3-c3e6-7c54-a779-fa3400ba3177" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongtermDebtTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LineOfCreditFacilityTable_019e26a3-c3e6-74d8-8378-f9f794477626" xlink:to="loc_us-gaap_LongtermDebtTypeAxis_019e26a3-c3e6-7c54-a779-fa3400ba3177" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_019e26a3-c3e6-7c54-a779-fa3400ba3177_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_019e26a3-c3e6-7c54-a779-fa3400ba3177" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_019e26a3-c3e6-7c54-a779-fa3400ba3177_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_019e26a3-c3e6-71f8-a508-d587285c1796" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_019e26a3-c3e6-7c54-a779-fa3400ba3177" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_019e26a3-c3e6-71f8-a508-d587285c1796" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditMember_019e26a3-c3e6-71d8-bc39-317136fb734b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LineOfCreditMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_019e26a3-c3e6-71f8-a508-d587285c1796" xlink:to="loc_us-gaap_LineOfCreditMember_019e26a3-c3e6-71d8-bc39-317136fb734b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentAxis_019e26a3-c3e6-7fd9-8f5e-6483ccf05450" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LineOfCreditFacilityTable_019e26a3-c3e6-74d8-8378-f9f794477626" xlink:to="loc_us-gaap_DebtInstrumentAxis_019e26a3-c3e6-7fd9-8f5e-6483ccf05450" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_019e26a3-c3e6-7fd9-8f5e-6483ccf05450_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DebtInstrumentAxis_019e26a3-c3e6-7fd9-8f5e-6483ccf05450" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_019e26a3-c3e6-7fd9-8f5e-6483ccf05450_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_019e26a3-c3e6-7a00-917c-3dbd48bca019" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DebtInstrumentAxis_019e26a3-c3e6-7fd9-8f5e-6483ccf05450" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_019e26a3-c3e6-7a00-917c-3dbd48bca019" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_hri_ABLCreditFacilityMember_019e26a3-c3e6-7aa9-bbfb-6dccbd393766" xlink:href="hri-20260630.xsd#hri_ABLCreditFacilityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_019e26a3-c3e6-7a00-917c-3dbd48bca019" xlink:to="loc_hri_ABLCreditFacilityMember_019e26a3-c3e6-7aa9-bbfb-6dccbd393766" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetBackedSecuritiesSecuritizedLoansAndReceivablesMember_019e26a3-c3e6-79d5-87c9-9995466d5da1" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AssetBackedSecuritiesSecuritizedLoansAndReceivablesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_019e26a3-c3e6-7a00-917c-3dbd48bca019" xlink:to="loc_us-gaap_AssetBackedSecuritiesSecuritizedLoansAndReceivablesMember_019e26a3-c3e6-79d5-87c9-9995466d5da1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityAxis_019e26a3-c3e6-7431-912b-118f89b84225" 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_us-gaap_LineOfCreditFacilityTable_019e26a3-c3e6-74d8-8378-f9f794477626" xlink:to="loc_us-gaap_CreditFacilityAxis_019e26a3-c3e6-7431-912b-118f89b84225" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityDomain_019e26a3-c3e6-7431-912b-118f89b84225_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_019e26a3-c3e6-7431-912b-118f89b84225" xlink:to="loc_us-gaap_CreditFacilityDomain_019e26a3-c3e6-7431-912b-118f89b84225_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityDomain_019e26a3-c3e6-743d-a920-4eeb4322103d" 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_019e26a3-c3e6-7431-912b-118f89b84225" xlink:to="loc_us-gaap_CreditFacilityDomain_019e26a3-c3e6-743d-a920-4eeb4322103d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevolvingCreditFacilityMember_019e26a3-c3e6-7b61-bb5e-f8e041bc7366" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RevolvingCreditFacilityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CreditFacilityDomain_019e26a3-c3e6-743d-a920-4eeb4322103d" xlink:to="loc_us-gaap_RevolvingCreditFacilityMember_019e26a3-c3e6-7b61-bb5e-f8e041bc7366" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity_019e26a3-c3e6-7c94-93e0-f407a5899579" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LineOfCreditFacilityLineItems_019e26a3-c3e6-7f6b-b116-39e0e556c994" xlink:to="loc_us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity_019e26a3-c3e6-7c94-93e0-f407a5899579" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_hri_LineOfCreditFacilityRemainingBorrowingCapacityUnderBorrowingBaseLimitation_019e26a3-c3e6-7d4d-bfc5-4647f4edaa8c" xlink:href="hri-20260630.xsd#hri_LineOfCreditFacilityRemainingBorrowingCapacityUnderBorrowingBaseLimitation"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LineOfCreditFacilityLineItems_019e26a3-c3e6-7f6b-b116-39e0e556c994" xlink:to="loc_hri_LineOfCreditFacilityRemainingBorrowingCapacityUnderBorrowingBaseLimitation_019e26a3-c3e6-7d4d-bfc5-4647f4edaa8c" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.hertzequip.com/role/FinancingObligationsNarrativeDetails" xlink:type="simple" xlink:href="hri-20260630.xsd#FinancingObligationsNarrativeDetails"/>
  <link:definitionLink xlink:role="http://www.hertzequip.com/role/FinancingObligationsNarrativeDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentLineItems_019e26a3-c3e6-701d-b585-2662eeb60aae" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentTable_019e26a3-c3e6-7f57-887b-ba565354f64f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019e26a3-c3e6-701d-b585-2662eeb60aae" xlink:to="loc_us-gaap_DebtInstrumentTable_019e26a3-c3e6-7f57-887b-ba565354f64f" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SaleLeasebackTransactionDescriptionAxis_019e26a3-c3e6-7c53-943e-3852dd1a307c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SaleLeasebackTransactionDescriptionAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_019e26a3-c3e6-7f57-887b-ba565354f64f" xlink:to="loc_us-gaap_SaleLeasebackTransactionDescriptionAxis_019e26a3-c3e6-7c53-943e-3852dd1a307c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SaleLeasebackTransactionNameDomain_019e26a3-c3e6-7c53-943e-3852dd1a307c_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SaleLeasebackTransactionNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_SaleLeasebackTransactionDescriptionAxis_019e26a3-c3e6-7c53-943e-3852dd1a307c" xlink:to="loc_us-gaap_SaleLeasebackTransactionNameDomain_019e26a3-c3e6-7c53-943e-3852dd1a307c_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SaleLeasebackTransactionNameDomain_019e26a3-c3e6-7a20-b1be-47964d49ebd3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SaleLeasebackTransactionNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_SaleLeasebackTransactionDescriptionAxis_019e26a3-c3e6-7c53-943e-3852dd1a307c" xlink:to="loc_us-gaap_SaleLeasebackTransactionNameDomain_019e26a3-c3e6-7a20-b1be-47964d49ebd3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_hri_FinancingObligationMember_019e26a3-c3e6-76da-866a-ec5961d33aca" xlink:href="hri-20260630.xsd#hri_FinancingObligationMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SaleLeasebackTransactionNameDomain_019e26a3-c3e6-7a20-b1be-47964d49ebd3" xlink:to="loc_hri_FinancingObligationMember_019e26a3-c3e6-76da-866a-ec5961d33aca" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_hri_FinanceLeaseLiabilityNumberOfPropertiesPreviouslySold_019e26a3-c3e6-7b14-8151-ae0916e82ee2" xlink:href="hri-20260630.xsd#hri_FinanceLeaseLiabilityNumberOfPropertiesPreviouslySold"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019e26a3-c3e6-701d-b585-2662eeb60aae" xlink:to="loc_hri_FinanceLeaseLiabilityNumberOfPropertiesPreviouslySold_019e26a3-c3e6-7b14-8151-ae0916e82ee2" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.hertzequip.com/role/FinancingObligationsScheduleofFinancingObligationsNetDetails" xlink:type="simple" xlink:href="hri-20260630.xsd#FinancingObligationsScheduleofFinancingObligationsNetDetails"/>
  <link:definitionLink xlink:role="http://www.hertzequip.com/role/FinancingObligationsScheduleofFinancingObligationsNetDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentLineItems_019e26a3-c3e6-70eb-a7b3-3fb7c3ce8a2b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentTable_019e26a3-c3e6-7234-8303-47297c81b534" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019e26a3-c3e6-70eb-a7b3-3fb7c3ce8a2b" xlink:to="loc_us-gaap_DebtInstrumentTable_019e26a3-c3e6-7234-8303-47297c81b534" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SaleLeasebackTransactionDescriptionAxis_019e26a3-c3e6-7a1a-bb19-29788dda006f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SaleLeasebackTransactionDescriptionAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_019e26a3-c3e6-7234-8303-47297c81b534" xlink:to="loc_us-gaap_SaleLeasebackTransactionDescriptionAxis_019e26a3-c3e6-7a1a-bb19-29788dda006f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SaleLeasebackTransactionNameDomain_019e26a3-c3e6-7a1a-bb19-29788dda006f_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SaleLeasebackTransactionNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_SaleLeasebackTransactionDescriptionAxis_019e26a3-c3e6-7a1a-bb19-29788dda006f" xlink:to="loc_us-gaap_SaleLeasebackTransactionNameDomain_019e26a3-c3e6-7a1a-bb19-29788dda006f_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SaleLeasebackTransactionNameDomain_019e26a3-c3e6-77e9-b05d-9dd6e9405617" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SaleLeasebackTransactionNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_SaleLeasebackTransactionDescriptionAxis_019e26a3-c3e6-7a1a-bb19-29788dda006f" xlink:to="loc_us-gaap_SaleLeasebackTransactionNameDomain_019e26a3-c3e6-77e9-b05d-9dd6e9405617" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_hri_FinancingObligationMember_019e26a3-c3e6-7459-9bcb-bae18b3c523f" xlink:href="hri-20260630.xsd#hri_FinancingObligationMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SaleLeasebackTransactionNameDomain_019e26a3-c3e6-77e9-b05d-9dd6e9405617" xlink:to="loc_hri_FinancingObligationMember_019e26a3-c3e6-7459-9bcb-bae18b3c523f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentInterestRateEffectivePercentage_019e26a3-c3e6-7163-a47b-f3920597c66e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentInterestRateEffectivePercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019e26a3-c3e6-70eb-a7b3-3fb7c3ce8a2b" xlink:to="loc_us-gaap_DebtInstrumentInterestRateEffectivePercentage_019e26a3-c3e6-7163-a47b-f3920597c66e" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentCarryingAmount_019e26a3-c3e6-7ca9-8609-480a6e0c40fb" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentCarryingAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019e26a3-c3e6-70eb-a7b3-3fb7c3ce8a2b" xlink:to="loc_us-gaap_DebtInstrumentCarryingAmount_019e26a3-c3e6-7ca9-8609-480a6e0c40fb" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UnamortizedDebtIssuanceExpense_019e26a3-c3e6-74a9-92a0-09b43a7c6e75" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_UnamortizedDebtIssuanceExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019e26a3-c3e6-70eb-a7b3-3fb7c3ce8a2b" xlink:to="loc_us-gaap_UnamortizedDebtIssuanceExpense_019e26a3-c3e6-74a9-92a0-09b43a7c6e75" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_hri_LongTermDebtLessIssuanceCosts_019e26a3-c3e6-74cf-a722-62682724255f" xlink:href="hri-20260630.xsd#hri_LongTermDebtLessIssuanceCosts"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019e26a3-c3e6-70eb-a7b3-3fb7c3ce8a2b" xlink:to="loc_hri_LongTermDebtLessIssuanceCosts_019e26a3-c3e6-74cf-a722-62682724255f" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtCurrent_019e26a3-c3e6-73c8-a57a-a7ed440e1496" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongTermDebtCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019e26a3-c3e6-70eb-a7b3-3fb7c3ce8a2b" xlink:to="loc_us-gaap_LongTermDebtCurrent_019e26a3-c3e6-73c8-a57a-a7ed440e1496" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebt_019e26a3-c3e6-7cb0-83b6-aa8c3d5c00c3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongTermDebt"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019e26a3-c3e6-70eb-a7b3-3fb7c3ce8a2b" xlink:to="loc_us-gaap_LongTermDebt_019e26a3-c3e6-7cb0-83b6-aa8c3d5c00c3" xlink:type="arc" order="5"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.hertzequip.com/role/AccumulatedOtherComprehensiveIncomeLossDetails" xlink:type="simple" xlink:href="hri-20260630.xsd#AccumulatedOtherComprehensiveIncomeLossDetails"/>
  <link:definitionLink xlink:role="http://www.hertzequip.com/role/AccumulatedOtherComprehensiveIncomeLossDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems_019e26a3-c3e6-767f-a67e-ce52279b862d" 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_019e26a3-c3e6-7038-b572-6418a7893e50" 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_019e26a3-c3e6-767f-a67e-ce52279b862d" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossTable_019e26a3-c3e6-7038-b572-6418a7893e50" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementEquityComponentsAxis_019e26a3-c3e6-78a6-ac5d-87401ba9bbce" 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_019e26a3-c3e6-7038-b572-6418a7893e50" xlink:to="loc_us-gaap_StatementEquityComponentsAxis_019e26a3-c3e6-78a6-ac5d-87401ba9bbce" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_019e26a3-c3e6-78a6-ac5d-87401ba9bbce_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_019e26a3-c3e6-78a6-ac5d-87401ba9bbce" xlink:to="loc_us-gaap_EquityComponentDomain_019e26a3-c3e6-78a6-ac5d-87401ba9bbce_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_019e26a3-c3e6-75ba-b0dd-01c9f63c0938" 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_019e26a3-c3e6-78a6-ac5d-87401ba9bbce" xlink:to="loc_us-gaap_EquityComponentDomain_019e26a3-c3e6-75ba-b0dd-01c9f63c0938" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember_019e26a3-c3e6-71a9-bfe7-519b6c9d926f" 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_019e26a3-c3e6-75ba-b0dd-01c9f63c0938" xlink:to="loc_us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember_019e26a3-c3e6-71a9-bfe7-519b6c9d926f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedTranslationAdjustmentMember_019e26a3-c3e6-7f69-b686-7b2e9c4d2a39" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccumulatedTranslationAdjustmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_019e26a3-c3e6-75ba-b0dd-01c9f63c0938" xlink:to="loc_us-gaap_AccumulatedTranslationAdjustmentMember_019e26a3-c3e6-7f69-b686-7b2e9c4d2a39" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_019e26a3-c3e6-7f92-9f49-9da012958b6a" 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_019e26a3-c3e6-75ba-b0dd-01c9f63c0938" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_019e26a3-c3e6-7f92-9f49-9da012958b6a" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AOCIAttributableToParentNetOfTaxRollForward_019e26a3-c3e6-7c06-a080-9dca351ef428" 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_019e26a3-c3e6-767f-a67e-ce52279b862d" xlink:to="loc_us-gaap_AOCIAttributableToParentNetOfTaxRollForward_019e26a3-c3e6-7c06-a080-9dca351ef428" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquity_019e26a3-c3e6-733f-aec4-cbd30290a5fb" 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_019e26a3-c3e6-7c06-a080-9dca351ef428" xlink:to="loc_us-gaap_StockholdersEquity_019e26a3-c3e6-733f-aec4-cbd30290a5fb" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OciBeforeReclassificationsBeforeTaxAttributableToParent_019e26a3-c3e6-7e05-9bae-3c78dc91e97d" 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_AOCIAttributableToParentNetOfTaxRollForward_019e26a3-c3e6-7c06-a080-9dca351ef428" xlink:to="loc_us-gaap_OciBeforeReclassificationsBeforeTaxAttributableToParent_019e26a3-c3e6-7e05-9bae-3c78dc91e97d" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquity_019e26a3-c3e6-7a2b-883e-bd88b0355ab6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockholdersEquity"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.hertzequip.com/role/CommitmentsandContingenciesDetails" xlink:type="simple" xlink:href="hri-20260630.xsd#CommitmentsandContingenciesDetails"/>
  <link:definitionLink xlink:role="http://www.hertzequip.com/role/CommitmentsandContingenciesDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LossContingenciesLineItems_019e26a3-c3e6-7b7b-9a3d-df6bbc9645f0" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LossContingenciesLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LossContingenciesTable_019e26a3-c3e6-7af2-a109-360a4bdf9151" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LossContingenciesTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_LossContingenciesLineItems_019e26a3-c3e6-7b7b-9a3d-df6bbc9645f0" xlink:to="loc_us-gaap_LossContingenciesTable_019e26a3-c3e6-7af2-a109-360a4bdf9151" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_019e26a3-c3e6-786f-871f-5afad9867448" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RelatedPartyTransactionsByRelatedPartyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LossContingenciesTable_019e26a3-c3e6-7af2-a109-360a4bdf9151" xlink:to="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_019e26a3-c3e6-786f-871f-5afad9867448" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyDomain_019e26a3-c3e6-786f-871f-5afad9867448_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RelatedPartyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_019e26a3-c3e6-786f-871f-5afad9867448" xlink:to="loc_us-gaap_RelatedPartyDomain_019e26a3-c3e6-786f-871f-5afad9867448_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyDomain_019e26a3-c3e6-7537-ac63-c8544092e66f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RelatedPartyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_019e26a3-c3e6-786f-871f-5afad9867448" xlink:to="loc_us-gaap_RelatedPartyDomain_019e26a3-c3e6-7537-ac63-c8544092e66f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_AffiliatedEntityMember_019e26a3-c3e6-7837-88a1-5ee97ae4f3ac" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_AffiliatedEntityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyDomain_019e26a3-c3e6-7537-ac63-c8544092e66f" xlink:to="loc_srt_AffiliatedEntityMember_019e26a3-c3e6-7837-88a1-5ee97ae4f3ac" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_hri_RelatedPartyTransactionIndemnificationPercentage_019e26a3-c3e6-76e3-88ce-ec273ad37871" xlink:href="hri-20260630.xsd#hri_RelatedPartyTransactionIndemnificationPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingenciesLineItems_019e26a3-c3e6-7b7b-9a3d-df6bbc9645f0" xlink:to="loc_hri_RelatedPartyTransactionIndemnificationPercentage_019e26a3-c3e6-76e3-88ce-ec273ad37871" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.hertzequip.com/role/FairValueMeasurementsNarrativeDetails" xlink:type="simple" xlink:href="hri-20260630.xsd#FairValueMeasurementsNarrativeDetails"/>
  <link:definitionLink xlink:role="http://www.hertzequip.com/role/FairValueMeasurementsNarrativeDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_019e26a3-c3e6-70da-9a09-eaa4ed64c7ad" 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_019e26a3-c3e6-7d2a-aa26-a06e010fea01" 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_019e26a3-c3e6-70da-9a09-eaa4ed64c7ad" xlink:to="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_019e26a3-c3e6-7d2a-aa26-a06e010fea01" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_019e26a3-c3e6-7ab5-89ed-edcaed90426b" 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_019e26a3-c3e6-7d2a-aa26-a06e010fea01" xlink:to="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_019e26a3-c3e6-7ab5-89ed-edcaed90426b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_019e26a3-c3e6-7ab5-89ed-edcaed90426b_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_019e26a3-c3e6-7ab5-89ed-edcaed90426b" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_019e26a3-c3e6-7ab5-89ed-edcaed90426b_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_019e26a3-c3e6-73da-a99d-5b823903b8cb" 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_019e26a3-c3e6-7ab5-89ed-edcaed90426b" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_019e26a3-c3e6-73da-a99d-5b823903b8cb" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel1Member_019e26a3-c3e6-78b3-b654-db9fc9b99a3b" 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_019e26a3-c3e6-73da-a99d-5b823903b8cb" xlink:to="loc_us-gaap_FairValueInputsLevel1Member_019e26a3-c3e6-78b3-b654-db9fc9b99a3b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel3Member_019e26a3-c3e6-74d8-aa46-cacc6f6a474d" 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_019e26a3-c3e6-73da-a99d-5b823903b8cb" xlink:to="loc_us-gaap_FairValueInputsLevel3Member_019e26a3-c3e6-74d8-aa46-cacc6f6a474d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByMeasurementFrequencyAxis_019e26a3-c3e6-7b69-9023-c9b9a02495c2" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueByMeasurementFrequencyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_019e26a3-c3e6-7d2a-aa26-a06e010fea01" xlink:to="loc_us-gaap_FairValueByMeasurementFrequencyAxis_019e26a3-c3e6-7b69-9023-c9b9a02495c2" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementFrequencyDomain_019e26a3-c3e6-7b69-9023-c9b9a02495c2_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueMeasurementFrequencyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByMeasurementFrequencyAxis_019e26a3-c3e6-7b69-9023-c9b9a02495c2" xlink:to="loc_us-gaap_FairValueMeasurementFrequencyDomain_019e26a3-c3e6-7b69-9023-c9b9a02495c2_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementFrequencyDomain_019e26a3-c3e6-7c8f-87a5-732dee266498" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueMeasurementFrequencyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByMeasurementFrequencyAxis_019e26a3-c3e6-7b69-9023-c9b9a02495c2" xlink:to="loc_us-gaap_FairValueMeasurementFrequencyDomain_019e26a3-c3e6-7c8f-87a5-732dee266498" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsRecurringMember_019e26a3-c3e6-7818-8579-359539bfe19a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueMeasurementsRecurringMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementFrequencyDomain_019e26a3-c3e6-7c8f-87a5-732dee266498" xlink:to="loc_us-gaap_FairValueMeasurementsRecurringMember_019e26a3-c3e6-7818-8579-359539bfe19a" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupClassificationAxis_019e26a3-c3e6-74c7-b94e-102f3c12caf3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DisposalGroupClassificationAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_019e26a3-c3e6-7d2a-aa26-a06e010fea01" xlink:to="loc_us-gaap_DisposalGroupClassificationAxis_019e26a3-c3e6-74c7-b94e-102f3c12caf3" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupClassificationDomain_019e26a3-c3e6-74c7-b94e-102f3c12caf3_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DisposalGroupClassificationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DisposalGroupClassificationAxis_019e26a3-c3e6-74c7-b94e-102f3c12caf3" xlink:to="loc_us-gaap_DisposalGroupClassificationDomain_019e26a3-c3e6-74c7-b94e-102f3c12caf3_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupClassificationDomain_019e26a3-c3e6-7c4a-bfbc-66f43f717118" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DisposalGroupClassificationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DisposalGroupClassificationAxis_019e26a3-c3e6-74c7-b94e-102f3c12caf3" xlink:to="loc_us-gaap_DisposalGroupClassificationDomain_019e26a3-c3e6-7c4a-bfbc-66f43f717118" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupHeldforsaleNotDiscontinuedOperationsMember_019e26a3-c3e6-78dc-b497-ac6f3b15e3f3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DisposalGroupHeldforsaleNotDiscontinuedOperationsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupClassificationDomain_019e26a3-c3e6-7c4a-bfbc-66f43f717118" xlink:to="loc_us-gaap_DisposalGroupHeldforsaleNotDiscontinuedOperationsMember_019e26a3-c3e6-78dc-b497-ac6f3b15e3f3" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_019e26a3-c3e6-7271-b34d-3cb039586156" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_019e26a3-c3e6-7d2a-aa26-a06e010fea01" xlink:to="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_019e26a3-c3e6-7271-b34d-3cb039586156" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_019e26a3-c3e6-7271-b34d-3cb039586156_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_019e26a3-c3e6-7271-b34d-3cb039586156" xlink:to="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_019e26a3-c3e6-7271-b34d-3cb039586156_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_019e26a3-c3e6-7890-bcb1-b60fcb899748" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_019e26a3-c3e6-7271-b34d-3cb039586156" xlink:to="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_019e26a3-c3e6-7890-bcb1-b60fcb899748" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_hri_CineleaseBusinessMember_019e26a3-c3e6-74e9-8541-7a263d74b286" xlink:href="hri-20260630.xsd#hri_CineleaseBusinessMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_019e26a3-c3e6-7890-bcb1-b60fcb899748" xlink:to="loc_hri_CineleaseBusinessMember_019e26a3-c3e6-74e9-8541-7a263d74b286" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashAndCashEquivalentsFairValueDisclosure_019e26a3-c3e6-7202-ad3f-efa128aa651f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CashAndCashEquivalentsFairValueDisclosure"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_019e26a3-c3e6-70da-9a09-eaa4ed64c7ad" xlink:to="loc_us-gaap_CashAndCashEquivalentsFairValueDisclosure_019e26a3-c3e6-7202-ad3f-efa128aa651f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_hri_DisposalGroupIncludingDiscontinuedOperationEarnoutReceivableFairValue_019e26a3-c3e6-7277-9289-fdbbca82ad6e" xlink:href="hri-20260630.xsd#hri_DisposalGroupIncludingDiscontinuedOperationEarnoutReceivableFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_019e26a3-c3e6-70da-9a09-eaa4ed64c7ad" xlink:to="loc_hri_DisposalGroupIncludingDiscontinuedOperationEarnoutReceivableFairValue_019e26a3-c3e6-7277-9289-fdbbca82ad6e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_hri_DisposalGroupIncludingDiscontinuedOperationEarnoutReceivableFairValueAdjustment_019e26a3-c3e6-7bfa-a305-5e7f7ac92aa6" xlink:href="hri-20260630.xsd#hri_DisposalGroupIncludingDiscontinuedOperationEarnoutReceivableFairValueAdjustment"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_019e26a3-c3e6-70da-9a09-eaa4ed64c7ad" xlink:to="loc_hri_DisposalGroupIncludingDiscontinuedOperationEarnoutReceivableFairValueAdjustment_019e26a3-c3e6-7bfa-a305-5e7f7ac92aa6" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.hertzequip.com/role/FairValueMeasurementsScheduleofFairValueofDebtDetails" xlink:type="simple" xlink:href="hri-20260630.xsd#FairValueMeasurementsScheduleofFairValueofDebtDetails"/>
  <link:definitionLink xlink:role="http://www.hertzequip.com/role/FairValueMeasurementsScheduleofFairValueofDebtDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_019e26a3-c3e6-7c7b-80ae-c28123266337" 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_019e26a3-c3e6-7e5d-b63f-cfaa52717dc1" 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_019e26a3-c3e6-7c7b-80ae-c28123266337" xlink:to="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_019e26a3-c3e6-7e5d-b63f-cfaa52717dc1" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentAxis_019e26a3-c3e6-7a02-9c31-bec65f3e88eb" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_019e26a3-c3e6-7e5d-b63f-cfaa52717dc1" xlink:to="loc_us-gaap_DebtInstrumentAxis_019e26a3-c3e6-7a02-9c31-bec65f3e88eb" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_019e26a3-c3e6-7a02-9c31-bec65f3e88eb_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DebtInstrumentAxis_019e26a3-c3e6-7a02-9c31-bec65f3e88eb" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_019e26a3-c3e6-7a02-9c31-bec65f3e88eb_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_019e26a3-c3e6-7741-ad25-42c8a537e1af" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DebtInstrumentAxis_019e26a3-c3e6-7a02-9c31-bec65f3e88eb" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_019e26a3-c3e6-7741-ad25-42c8a537e1af" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_hri_A2029NotesMember_019e26a3-c3e6-7601-8be5-c9f8f44632a2" xlink:href="hri-20260630.xsd#hri_A2029NotesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_019e26a3-c3e6-7741-ad25-42c8a537e1af" xlink:to="loc_hri_A2029NotesMember_019e26a3-c3e6-7601-8be5-c9f8f44632a2" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_hri_A2030NotesMember_019e26a3-c3e6-7f8e-acf6-f46bc770ff21" xlink:href="hri-20260630.xsd#hri_A2030NotesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_019e26a3-c3e6-7741-ad25-42c8a537e1af" xlink:to="loc_hri_A2030NotesMember_019e26a3-c3e6-7f8e-acf6-f46bc770ff21" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_hri_A2031NotesMember_019e26a3-c3e6-708d-a6e1-b21048e03380" xlink:href="hri-20260630.xsd#hri_A2031NotesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_019e26a3-c3e6-7741-ad25-42c8a537e1af" xlink:to="loc_hri_A2031NotesMember_019e26a3-c3e6-708d-a6e1-b21048e03380" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_hri_A2033NotesMember_019e26a3-c3e6-770f-a621-5e89cc1d4de3" xlink:href="hri-20260630.xsd#hri_A2033NotesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_019e26a3-c3e6-7741-ad25-42c8a537e1af" xlink:to="loc_hri_A2033NotesMember_019e26a3-c3e6-770f-a621-5e89cc1d4de3" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_hri_A2034NotesMember_019e26a3-c3e6-723b-968d-a183646c1055" xlink:href="hri-20260630.xsd#hri_A2034NotesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_019e26a3-c3e6-7741-ad25-42c8a537e1af" xlink:to="loc_hri_A2034NotesMember_019e26a3-c3e6-723b-968d-a183646c1055" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_hri_TermLoanFacilityMember_019e26a3-c3e6-7eba-949c-1ac22ce5ee04" xlink:href="hri-20260630.xsd#hri_TermLoanFacilityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_019e26a3-c3e6-7741-ad25-42c8a537e1af" xlink:to="loc_hri_TermLoanFacilityMember_019e26a3-c3e6-7eba-949c-1ac22ce5ee04" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_019e26a3-c3e6-7cc3-b151-64cda324a1a0" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongtermDebtTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_019e26a3-c3e6-7e5d-b63f-cfaa52717dc1" xlink:to="loc_us-gaap_LongtermDebtTypeAxis_019e26a3-c3e6-7cc3-b151-64cda324a1a0" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_019e26a3-c3e6-7cc3-b151-64cda324a1a0_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_019e26a3-c3e6-7cc3-b151-64cda324a1a0" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_019e26a3-c3e6-7cc3-b151-64cda324a1a0_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_019e26a3-c3e6-72a7-9d69-29aad2c05433" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_019e26a3-c3e6-7cc3-b151-64cda324a1a0" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_019e26a3-c3e6-72a7-9d69-29aad2c05433" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SeniorNotesMember_019e26a3-c3e6-7016-a09d-ab9a4d2e3d68" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SeniorNotesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_019e26a3-c3e6-72a7-9d69-29aad2c05433" xlink:to="loc_us-gaap_SeniorNotesMember_019e26a3-c3e6-7016-a09d-ab9a4d2e3d68" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByMeasurementBasisAxis_019e26a3-c3e6-7388-94ae-b10c49362203" 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_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_019e26a3-c3e6-7e5d-b63f-cfaa52717dc1" xlink:to="loc_us-gaap_FairValueByMeasurementBasisAxis_019e26a3-c3e6-7388-94ae-b10c49362203" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_019e26a3-c3e6-7388-94ae-b10c49362203_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_019e26a3-c3e6-7388-94ae-b10c49362203" xlink:to="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_019e26a3-c3e6-7388-94ae-b10c49362203_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueDisclosureItemAmountsDomain_019e26a3-c3e6-78dd-9802-106694c1564a" 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_019e26a3-c3e6-7388-94ae-b10c49362203" xlink:to="loc_us-gaap_FairValueDisclosureItemAmountsDomain_019e26a3-c3e6-78dd-9802-106694c1564a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_019e26a3-c3e6-7d2f-b280-cf1eaaa5a167" 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_019e26a3-c3e6-78dd-9802-106694c1564a" xlink:to="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_019e26a3-c3e6-7d2f-b280-cf1eaaa5a167" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EstimateOfFairValueFairValueDisclosureMember_019e26a3-c3e6-70e9-837d-f346673d9d73" 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_019e26a3-c3e6-7d2f-b280-cf1eaaa5a167" xlink:to="loc_us-gaap_EstimateOfFairValueFairValueDisclosureMember_019e26a3-c3e6-70e9-837d-f346673d9d73" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentCarryingAmount_019e26a3-c3e6-7f46-91e4-227a4e3e3a38" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentCarryingAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_019e26a3-c3e6-7c7b-80ae-c28123266337" xlink:to="loc_us-gaap_DebtInstrumentCarryingAmount_019e26a3-c3e6-7f46-91e4-227a4e3e3a38" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentFairValue_019e26a3-c3e6-7312-903d-4b46b67c91bc" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_019e26a3-c3e6-7c7b-80ae-c28123266337" xlink:to="loc_us-gaap_DebtInstrumentFairValue_019e26a3-c3e6-7312-903d-4b46b67c91bc" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.hertzequip.com/role/EarningsLossPerShareScheduleofBasicandDilutedEarningsPerShareDetails" xlink:type="simple" xlink:href="hri-20260630.xsd#EarningsLossPerShareScheduleofBasicandDilutedEarningsPerShareDetails"/>
  <link:definitionLink xlink:role="http://www.hertzequip.com/role/EarningsLossPerShareScheduleofBasicandDilutedEarningsPerShareDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems_019e26a3-c3e6-7ba0-aecc-91d9ef502cc0" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable_019e26a3-c3e6-7eca-90d0-0db093470af0" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems_019e26a3-c3e6-7ba0-aecc-91d9ef502cc0" xlink:to="loc_us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable_019e26a3-c3e6-7eca-90d0-0db093470af0" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis_019e26a3-c3e6-73b0-b3cd-645b22f466c8" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable_019e26a3-c3e6-7eca-90d0-0db093470af0" xlink:to="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis_019e26a3-c3e6-73b0-b3cd-645b22f466c8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AntidilutiveSecuritiesNameDomain_019e26a3-c3e6-73b0-b3cd-645b22f466c8_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AntidilutiveSecuritiesNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis_019e26a3-c3e6-73b0-b3cd-645b22f466c8" xlink:to="loc_us-gaap_AntidilutiveSecuritiesNameDomain_019e26a3-c3e6-73b0-b3cd-645b22f466c8_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AntidilutiveSecuritiesNameDomain_019e26a3-c3e6-717c-b5e4-2b726f757489" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AntidilutiveSecuritiesNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis_019e26a3-c3e6-73b0-b3cd-645b22f466c8" xlink:to="loc_us-gaap_AntidilutiveSecuritiesNameDomain_019e26a3-c3e6-717c-b5e4-2b726f757489" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockCompensationPlanMember_019e26a3-c3e6-74e8-9fb5-acabd6f42643" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockCompensationPlanMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AntidilutiveSecuritiesNameDomain_019e26a3-c3e6-717c-b5e4-2b726f757489" xlink:to="loc_us-gaap_StockCompensationPlanMember_019e26a3-c3e6-74e8-9fb5-acabd6f42643" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersDilutedAbstract_019e26a3-c3e6-7aba-ba66-93e9c36fcf8d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NetIncomeLossAvailableToCommonStockholdersDilutedAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems_019e26a3-c3e6-7ba0-aecc-91d9ef502cc0" xlink:to="loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersDilutedAbstract_019e26a3-c3e6-7aba-ba66-93e9c36fcf8d" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_019e26a3-c3e6-7df6-b1b3-396fed8ea9f6" 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_NetIncomeLossAvailableToCommonStockholdersDilutedAbstract_019e26a3-c3e6-7aba-ba66-93e9c36fcf8d" xlink:to="loc_us-gaap_NetIncomeLoss_019e26a3-c3e6-7df6-b1b3-396fed8ea9f6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingDilutedDisclosureItemsAbstract_019e26a3-c3e6-7929-ad6e-a6946ed828bc" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_WeightedAverageNumberOfSharesOutstandingDilutedDisclosureItemsAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems_019e26a3-c3e6-7ba0-aecc-91d9ef502cc0" xlink:to="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingDilutedDisclosureItemsAbstract_019e26a3-c3e6-7929-ad6e-a6946ed828bc" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_019e26a3-c3e6-79ca-b580-42b0a5522236" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_WeightedAverageNumberOfSharesOutstandingBasic"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingDilutedDisclosureItemsAbstract_019e26a3-c3e6-7929-ad6e-a6946ed828bc" xlink:to="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_019e26a3-c3e6-79ca-b580-42b0a5522236" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements_019e26a3-c3e6-7d86-a644-b87e3eddae12" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingDilutedDisclosureItemsAbstract_019e26a3-c3e6-7929-ad6e-a6946ed828bc" xlink:to="loc_us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements_019e26a3-c3e6-7d86-a644-b87e3eddae12" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_019e26a3-c3e6-7115-afaf-c34799994877" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingDilutedDisclosureItemsAbstract_019e26a3-c3e6-7929-ad6e-a6946ed828bc" xlink:to="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_019e26a3-c3e6-7115-afaf-c34799994877" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_hri_EarningsPerShareBasicAndDilutedEPSAbstract_019e26a3-c3e6-7842-9dbe-02ce8ff8635e" xlink:href="hri-20260630.xsd#hri_EarningsPerShareBasicAndDilutedEPSAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems_019e26a3-c3e6-7ba0-aecc-91d9ef502cc0" xlink:to="loc_hri_EarningsPerShareBasicAndDilutedEPSAbstract_019e26a3-c3e6-7842-9dbe-02ce8ff8635e" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EarningsPerShareBasic_019e26a3-c3e6-7190-89b4-0eefa4c2bd2e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EarningsPerShareBasic"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_hri_EarningsPerShareBasicAndDilutedEPSAbstract_019e26a3-c3e6-7842-9dbe-02ce8ff8635e" xlink:to="loc_us-gaap_EarningsPerShareBasic_019e26a3-c3e6-7190-89b4-0eefa4c2bd2e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EarningsPerShareDiluted_019e26a3-c3e6-7953-ab7c-43d4973c68bb" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EarningsPerShareDiluted"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_hri_EarningsPerShareBasicAndDilutedEPSAbstract_019e26a3-c3e6-7842-9dbe-02ce8ff8635e" xlink:to="loc_us-gaap_EarningsPerShareDiluted_019e26a3-c3e6-7953-ab7c-43d4973c68bb" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount_019e26a3-c3e6-7733-9b67-31fdbbb83480" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems_019e26a3-c3e6-7ba0-aecc-91d9ef502cc0" xlink:to="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount_019e26a3-c3e6-7733-9b67-31fdbbb83480" xlink:type="arc" order="3"/>
  </link:definitionLink>
</link:linkbase>
