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

<!--XBRL Document Created with the Workiva Platform-->
<!--Copyright 2026 Workiva-->
<!--r:019f14d5-21d7-7dff-9afd-e9c17a1a98d4,g:3124bc9c-eaae-47ed-b3a5-3a532858e32c-->
<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.royalcaribbean.com/role/CONSOLIDATEDSTATEMENTSOFCOMPREHENSIVEINCOMELOSS" xlink:type="simple" xlink:href="rcl-20260630.xsd#CONSOLIDATEDSTATEMENTSOFCOMPREHENSIVEINCOMELOSS"/>
  <link:definitionLink xlink:role="http://www.royalcaribbean.com/role/CONSOLIDATEDSTATEMENTSOFCOMPREHENSIVEINCOMELOSS" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementLineItems_019f14d5-238d-7373-bf52-8a000341612a" 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_019f14d5-238d-7662-9ba6-942602bd2f19" 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_019f14d5-238d-7373-bf52-8a000341612a" xlink:to="loc_us-gaap_StatementTable_019f14d5-238d-7662-9ba6-942602bd2f19" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductOrServiceAxis_019f14d5-238d-7d80-990f-72d1d0f574dc" 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_019f14d5-238d-7662-9ba6-942602bd2f19" xlink:to="loc_srt_ProductOrServiceAxis_019f14d5-238d-7d80-990f-72d1d0f574dc" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_019f14d5-238d-7d80-990f-72d1d0f574dc_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_019f14d5-238d-7d80-990f-72d1d0f574dc" xlink:to="loc_srt_ProductsAndServicesDomain_019f14d5-238d-7d80-990f-72d1d0f574dc_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_019f14d5-238d-7b56-b7e7-25f14b7de1cb" 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_019f14d5-238d-7d80-990f-72d1d0f574dc" xlink:to="loc_srt_ProductsAndServicesDomain_019f14d5-238d-7b56-b7e7-25f14b7de1cb" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PassengerMember_019f14d5-238d-7735-8524-143f9a6c808a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PassengerMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_019f14d5-238d-7b56-b7e7-25f14b7de1cb" xlink:to="loc_us-gaap_PassengerMember_019f14d5-238d-7735-8524-143f9a6c808a" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProductAndServiceOtherMember_019f14d5-238d-7f6f-a336-cc6161b3f01b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ProductAndServiceOtherMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_019f14d5-238d-7b56-b7e7-25f14b7de1cb" xlink:to="loc_us-gaap_ProductAndServiceOtherMember_019f14d5-238d-7f6f-a336-cc6161b3f01b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_rcl_SalesCommissionsTransportationAndOtherMember_019f14d5-238d-7475-a07c-efc0e8922d1c" xlink:href="rcl-20260630.xsd#rcl_SalesCommissionsTransportationAndOtherMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_019f14d5-238d-7b56-b7e7-25f14b7de1cb" xlink:to="loc_rcl_SalesCommissionsTransportationAndOtherMember_019f14d5-238d-7475-a07c-efc0e8922d1c" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_rcl_PayrollMember_019f14d5-238d-75dc-8513-2cbc12ea3bb1" xlink:href="rcl-20260630.xsd#rcl_PayrollMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_019f14d5-238d-7b56-b7e7-25f14b7de1cb" xlink:to="loc_rcl_PayrollMember_019f14d5-238d-75dc-8513-2cbc12ea3bb1" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FoodAndBeverageMember_019f14d5-238d-7650-a392-dcf9e0a1b0cd" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FoodAndBeverageMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_019f14d5-238d-7b56-b7e7-25f14b7de1cb" xlink:to="loc_us-gaap_FoodAndBeverageMember_019f14d5-238d-7650-a392-dcf9e0a1b0cd" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_rcl_FuelCostsMember_019f14d5-238d-7fb6-b0ee-b83495942bb7" xlink:href="rcl-20260630.xsd#rcl_FuelCostsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_019f14d5-238d-7b56-b7e7-25f14b7de1cb" xlink:to="loc_rcl_FuelCostsMember_019f14d5-238d-7fb6-b0ee-b83495942bb7" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_rcl_OtherOperatingExpensesMember_019f14d5-238d-7551-b7a7-f38f92cce3e9" xlink:href="rcl-20260630.xsd#rcl_OtherOperatingExpensesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_019f14d5-238d-7b56-b7e7-25f14b7de1cb" xlink:to="loc_rcl_OtherOperatingExpensesMember_019f14d5-238d-7551-b7a7-f38f92cce3e9" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_019f14d5-238d-7104-80ff-a5baa2f5f769" 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_StatementLineItems_019f14d5-238d-7373-bf52-8a000341612a" xlink:to="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_019f14d5-238d-7104-80ff-a5baa2f5f769" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CostOfRevenueAbstract_019f14d5-238d-7dcd-8d84-846e14de9f7f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CostOfRevenueAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_019f14d5-238d-7373-bf52-8a000341612a" xlink:to="loc_us-gaap_CostOfRevenueAbstract_019f14d5-238d-7dcd-8d84-846e14de9f7f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CostOfGoodsAndServicesSold_019f14d5-238d-7955-9cff-5f832c389263" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CostOfGoodsAndServicesSold"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CostOfRevenueAbstract_019f14d5-238d-7dcd-8d84-846e14de9f7f" xlink:to="loc_us-gaap_CostOfGoodsAndServicesSold_019f14d5-238d-7955-9cff-5f832c389263" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SellingGeneralAndAdministrativeExpense_019f14d5-238d-7aa8-91bc-e31cd91f1a18" 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_StatementLineItems_019f14d5-238d-7373-bf52-8a000341612a" xlink:to="loc_us-gaap_SellingGeneralAndAdministrativeExpense_019f14d5-238d-7aa8-91bc-e31cd91f1a18" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DepreciationAndAmortization_019f14d5-238d-7fa7-b277-f8de3f5c9d88" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DepreciationAndAmortization"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_019f14d5-238d-7373-bf52-8a000341612a" xlink:to="loc_us-gaap_DepreciationAndAmortization_019f14d5-238d-7fa7-b277-f8de3f5c9d88" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingIncomeLoss_019f14d5-238d-7d2c-871c-3c4be27d755c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OperatingIncomeLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_019f14d5-238d-7373-bf52-8a000341612a" xlink:to="loc_us-gaap_OperatingIncomeLoss_019f14d5-238d-7d2c-871c-3c4be27d755c" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NonoperatingIncomeExpenseAbstract_019f14d5-238d-76d1-a1e0-207ebb5625ad" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NonoperatingIncomeExpenseAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_019f14d5-238d-7373-bf52-8a000341612a" xlink:to="loc_us-gaap_NonoperatingIncomeExpenseAbstract_019f14d5-238d-76d1-a1e0-207ebb5625ad" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestAndOtherIncome_019f14d5-238d-7317-8702-f038151df785" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InterestAndOtherIncome"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NonoperatingIncomeExpenseAbstract_019f14d5-238d-76d1-a1e0-207ebb5625ad" xlink:to="loc_us-gaap_InterestAndOtherIncome_019f14d5-238d-7317-8702-f038151df785" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestExpenseNonoperating_019f14d5-238d-71a3-ba13-5c585b4d290d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InterestExpenseNonoperating"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NonoperatingIncomeExpenseAbstract_019f14d5-238d-76d1-a1e0-207ebb5625ad" xlink:to="loc_us-gaap_InterestExpenseNonoperating_019f14d5-238d-71a3-ba13-5c585b4d290d" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromEquityMethodInvestments_019f14d5-238d-71f5-9a65-1eb9fd81da20" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncomeLossFromEquityMethodInvestments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NonoperatingIncomeExpenseAbstract_019f14d5-238d-76d1-a1e0-207ebb5625ad" xlink:to="loc_us-gaap_IncomeLossFromEquityMethodInvestments_019f14d5-238d-71f5-9a65-1eb9fd81da20" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherNonoperatingIncomeExpense_019f14d5-238d-7243-b62e-bcf74e071408" 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_NonoperatingIncomeExpenseAbstract_019f14d5-238d-76d1-a1e0-207ebb5625ad" xlink:to="loc_us-gaap_OtherNonoperatingIncomeExpense_019f14d5-238d-7243-b62e-bcf74e071408" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_019f14d5-238d-788e-909f-bd6a1b6e2025" 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_019f14d5-238d-7373-bf52-8a000341612a" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_019f14d5-238d-788e-909f-bd6a1b6e2025" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxExpenseBenefit_019f14d5-238d-758a-b92b-5461740f36b5" 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_019f14d5-238d-7373-bf52-8a000341612a" xlink:to="loc_us-gaap_IncomeTaxExpenseBenefit_019f14d5-238d-758a-b92b-5461740f36b5" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProfitLoss_019f14d5-238d-7db6-a6b8-1f2a9cedef53" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ProfitLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_019f14d5-238d-7373-bf52-8a000341612a" xlink:to="loc_us-gaap_ProfitLoss_019f14d5-238d-7db6-a6b8-1f2a9cedef53" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLossAttributableToNoncontrollingInterest_019f14d5-238d-7ebe-8c9e-0eee78f6ace4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NetIncomeLossAttributableToNoncontrollingInterest"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_019f14d5-238d-7373-bf52-8a000341612a" xlink:to="loc_us-gaap_NetIncomeLossAttributableToNoncontrollingInterest_019f14d5-238d-7ebe-8c9e-0eee78f6ace4" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_019f14d5-238d-7895-8a11-55b90f039091" 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_019f14d5-238d-7373-bf52-8a000341612a" xlink:to="loc_us-gaap_NetIncomeLoss_019f14d5-238d-7895-8a11-55b90f039091" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EarningsPerShareAbstract_019f14d5-238d-7d4a-858f-4172257248e9" 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_019f14d5-238d-7373-bf52-8a000341612a" xlink:to="loc_us-gaap_EarningsPerShareAbstract_019f14d5-238d-7d4a-858f-4172257248e9" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EarningsPerShareBasic_019f14d5-238d-7927-9af1-4e59db153481" 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_019f14d5-238d-7d4a-858f-4172257248e9" xlink:to="loc_us-gaap_EarningsPerShareBasic_019f14d5-238d-7927-9af1-4e59db153481" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EarningsPerShareDiluted_019f14d5-238d-7735-a66a-e7aa08aa70ff" 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_019f14d5-238d-7d4a-858f-4172257248e9" xlink:to="loc_us-gaap_EarningsPerShareDiluted_019f14d5-238d-7735-a66a-e7aa08aa70ff" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingAbstract_019f14d5-238d-7d94-a654-0849526be902" 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_019f14d5-238d-7373-bf52-8a000341612a" xlink:to="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingAbstract_019f14d5-238d-7d94-a654-0849526be902" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_019f14d5-238d-71cc-b35e-e15b66c31a42" 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_019f14d5-238d-7d94-a654-0849526be902" xlink:to="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_019f14d5-238d-71cc-b35e-e15b66c31a42" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_019f14d5-238d-7dd5-aae8-6da32d85a69f" 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_019f14d5-238d-7d94-a654-0849526be902" xlink:to="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_019f14d5-238d-7dd5-aae8-6da32d85a69f" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ComprehensiveIncomeNetOfTaxAbstract_019f14d5-238d-7d64-8ea3-c25ff1b7c20f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ComprehensiveIncomeNetOfTaxAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_019f14d5-238d-7373-bf52-8a000341612a" xlink:to="loc_us-gaap_ComprehensiveIncomeNetOfTaxAbstract_019f14d5-238d-7d64-8ea3-c25ff1b7c20f" xlink:type="arc" order="13"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProfitLoss_019f14d5-238d-7a88-a026-3e5fd4429279" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ProfitLoss"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecreaseAbstract_019f14d5-238d-74be-9e32-3581448f334c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecreaseAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ComprehensiveIncomeNetOfTaxAbstract_019f14d5-238d-7d64-8ea3-c25ff1b7c20f" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecreaseAbstract_019f14d5-238d-74be-9e32-3581448f334c" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax_019f14d5-238d-7dda-b3df-ceb849e31f70" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecreaseAbstract_019f14d5-238d-74be-9e32-3581448f334c" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax_019f14d5-238d-7dda-b3df-ceb849e31f70" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax_019f14d5-238d-7ab1-a5fe-155ceb1e10bf" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecreaseAbstract_019f14d5-238d-74be-9e32-3581448f334c" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax_019f14d5-238d-7ab1-a5fe-155ceb1e10bf" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax_019f14d5-238d-7998-9f02-5ab348d29a3e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecreaseAbstract_019f14d5-238d-74be-9e32-3581448f334c" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax_019f14d5-238d-7998-9f02-5ab348d29a3e" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_019f14d5-238d-7b01-b55e-b6356009c799" 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_OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecreaseAbstract_019f14d5-238d-74be-9e32-3581448f334c" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_019f14d5-238d-7b01-b55e-b6356009c799" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest_019f14d5-238d-75e4-a169-3ffd570d1049" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ComprehensiveIncomeNetOfTaxAbstract_019f14d5-238d-7d64-8ea3-c25ff1b7c20f" xlink:to="loc_us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest_019f14d5-238d-75e4-a169-3ffd570d1049" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest_019f14d5-238d-73fc-b9e3-d9700f9d527f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ComprehensiveIncomeNetOfTaxAbstract_019f14d5-238d-7d64-8ea3-c25ff1b7c20f" xlink:to="loc_us-gaap_ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest_019f14d5-238d-73fc-b9e3-d9700f9d527f" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ComprehensiveIncomeNetOfTax_019f14d5-238d-7c7a-ae70-87b22a774f14" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ComprehensiveIncomeNetOfTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ComprehensiveIncomeNetOfTaxAbstract_019f14d5-238d-7d64-8ea3-c25ff1b7c20f" xlink:to="loc_us-gaap_ComprehensiveIncomeNetOfTax_019f14d5-238d-7c7a-ae70-87b22a774f14" xlink:type="arc" order="5"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.royalcaribbean.com/role/CONSOLIDATEDSTATEMENTSOFSHAREHOLDERSEQUITY" xlink:type="simple" xlink:href="rcl-20260630.xsd#CONSOLIDATEDSTATEMENTSOFSHAREHOLDERSEQUITY"/>
  <link:definitionLink xlink:role="http://www.royalcaribbean.com/role/CONSOLIDATEDSTATEMENTSOFSHAREHOLDERSEQUITY" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementLineItems_019f14d5-238d-77b4-96cf-c3fdc44b884a" 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_019f14d5-238d-7848-abdf-caae4944bb13" 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_019f14d5-238d-77b4-96cf-c3fdc44b884a" xlink:to="loc_us-gaap_StatementTable_019f14d5-238d-7848-abdf-caae4944bb13" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementEquityComponentsAxis_019f14d5-238d-785e-b3c6-425b40017ece" 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_019f14d5-238d-7848-abdf-caae4944bb13" xlink:to="loc_us-gaap_StatementEquityComponentsAxis_019f14d5-238d-785e-b3c6-425b40017ece" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_019f14d5-238d-785e-b3c6-425b40017ece_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_019f14d5-238d-785e-b3c6-425b40017ece" xlink:to="loc_us-gaap_EquityComponentDomain_019f14d5-238d-785e-b3c6-425b40017ece_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_019f14d5-238d-7b08-b047-cc5b01016941" 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_019f14d5-238d-785e-b3c6-425b40017ece" xlink:to="loc_us-gaap_EquityComponentDomain_019f14d5-238d-7b08-b047-cc5b01016941" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockMember_019f14d5-238d-75b2-ac27-e68d6273b365" 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_019f14d5-238d-7b08-b047-cc5b01016941" xlink:to="loc_us-gaap_CommonStockMember_019f14d5-238d-75b2-ac27-e68d6273b365" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdditionalPaidInCapitalMember_019f14d5-238d-7325-a92e-6c1cb1380aae" 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_019f14d5-238d-7b08-b047-cc5b01016941" xlink:to="loc_us-gaap_AdditionalPaidInCapitalMember_019f14d5-238d-7325-a92e-6c1cb1380aae" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetainedEarningsMember_019f14d5-238d-7cb4-930a-3377a7cdf252" 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_019f14d5-238d-7b08-b047-cc5b01016941" xlink:to="loc_us-gaap_RetainedEarningsMember_019f14d5-238d-7cb4-930a-3377a7cdf252" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_019f14d5-238d-70a3-af98-c86f9c0a40a0" 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_019f14d5-238d-7b08-b047-cc5b01016941" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_019f14d5-238d-70a3-af98-c86f9c0a40a0" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TreasuryStockCommonMember_019f14d5-238d-7c3f-97d7-4dd3c9ecce83" 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_019f14d5-238d-7b08-b047-cc5b01016941" xlink:to="loc_us-gaap_TreasuryStockCommonMember_019f14d5-238d-7c3f-97d7-4dd3c9ecce83" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NoncontrollingInterestMember_019f14d5-238d-7555-85f2-08de0e2569c8" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NoncontrollingInterestMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_019f14d5-238d-7b08-b047-cc5b01016941" xlink:to="loc_us-gaap_NoncontrollingInterestMember_019f14d5-238d-7555-85f2-08de0e2569c8" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_019f14d5-238d-7579-bfec-bbdfd4762187" 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_019f14d5-238d-77b4-96cf-c3fdc44b884a" xlink:to="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_019f14d5-238d-7579-bfec-bbdfd4762187" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_019f14d5-238d-71bb-9a2e-74e4a93a13ef" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_019f14d5-238d-7579-bfec-bbdfd4762187" xlink:to="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_019f14d5-238d-71bb-9a2e-74e4a93a13ef" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_rcl_StockIssuedDuringPeriodValueUnderEmployeeRelatedPlans_019f14d5-238d-7985-a48a-40e6666647da" xlink:href="rcl-20260630.xsd#rcl_StockIssuedDuringPeriodValueUnderEmployeeRelatedPlans"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_019f14d5-238d-7579-bfec-bbdfd4762187" xlink:to="loc_rcl_StockIssuedDuringPeriodValueUnderEmployeeRelatedPlans_019f14d5-238d-7985-a48a-40e6666647da" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DividendsCommonStockCash_019f14d5-238d-7132-944e-1bc158c44f9c" 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_019f14d5-238d-7579-bfec-bbdfd4762187" xlink:to="loc_us-gaap_DividendsCommonStockCash_019f14d5-238d-7132-944e-1bc158c44f9c" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_rcl_AdjustmentToAdditionalPaidInCapitalConvertibleDebtInstrumentSettlement_019f14d5-238d-7620-b893-a20ecaa220a6" xlink:href="rcl-20260630.xsd#rcl_AdjustmentToAdditionalPaidInCapitalConvertibleDebtInstrumentSettlement"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_019f14d5-238d-7579-bfec-bbdfd4762187" xlink:to="loc_rcl_AdjustmentToAdditionalPaidInCapitalConvertibleDebtInstrumentSettlement_019f14d5-238d-7620-b893-a20ecaa220a6" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax_019f14d5-238d-7bd5-b2db-a73e50717b98" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_019f14d5-238d-7579-bfec-bbdfd4762187" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax_019f14d5-238d-7bd5-b2db-a73e50717b98" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax_019f14d5-238d-7453-be96-6f30ef76d2b8" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_019f14d5-238d-7579-bfec-bbdfd4762187" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax_019f14d5-238d-7453-be96-6f30ef76d2b8" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax_019f14d5-238d-7040-85fd-1e38fb13b10a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_019f14d5-238d-7579-bfec-bbdfd4762187" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax_019f14d5-238d-7040-85fd-1e38fb13b10a" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TreasuryStockValueAcquiredCostMethod_019f14d5-238d-79e2-ae39-3271355ad93d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_TreasuryStockValueAcquiredCostMethod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_019f14d5-238d-7579-bfec-bbdfd4762187" xlink:to="loc_us-gaap_TreasuryStockValueAcquiredCostMethod_019f14d5-238d-79e2-ae39-3271355ad93d" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLossAttributableToNoncontrollingInterest_019f14d5-238d-7723-80e3-401fd6016679" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NetIncomeLossAttributableToNoncontrollingInterest"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_019f14d5-238d-7579-bfec-bbdfd4762187" xlink:to="loc_us-gaap_NetIncomeLossAttributableToNoncontrollingInterest_019f14d5-238d-7723-80e3-401fd6016679" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_rcl_NoncontrollingInterestIncreaseDecreaseFromOtherActivity_019f14d5-238d-71f8-8d5a-4b43b535fbf9" xlink:href="rcl-20260630.xsd#rcl_NoncontrollingInterestIncreaseDecreaseFromOtherActivity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_019f14d5-238d-7579-bfec-bbdfd4762187" xlink:to="loc_rcl_NoncontrollingInterestIncreaseDecreaseFromOtherActivity_019f14d5-238d-71f8-8d5a-4b43b535fbf9" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_019f14d5-238d-7159-affe-1c809b76b571" 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_019f14d5-238d-7579-bfec-bbdfd4762187" xlink:to="loc_us-gaap_NetIncomeLoss_019f14d5-238d-7159-affe-1c809b76b571" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_019f14d5-238d-7c23-9863-d123228c0baa" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.royalcaribbean.com/role/FairValueMeasurementsandDerivativeInstrumentsTables" xlink:type="simple" xlink:href="rcl-20260630.xsd#FairValueMeasurementsandDerivativeInstrumentsTables"/>
  <link:definitionLink xlink:role="http://www.royalcaribbean.com/role/FairValueMeasurementsandDerivativeInstrumentsTables" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeLineItems_019f14d5-238e-7ef9-b971-4e3cd039c42a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeTable_019f14d5-238e-7f3f-aaea-10723352b694" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DerivativeLineItems_019f14d5-238e-7ef9-b971-4e3cd039c42a" xlink:to="loc_us-gaap_DerivativeTable_019f14d5-238e-7f3f-aaea-10723352b694" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis_019f14d5-238e-764b-bf0d-79ab9f037ce8" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DerivativeTable_019f14d5-238e-7f3f-aaea-10723352b694" xlink:to="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis_019f14d5-238e-764b-bf0d-79ab9f037ce8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingRelationshipDomain_019f14d5-238e-764b-bf0d-79ab9f037ce8_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_HedgingRelationshipDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis_019f14d5-238e-764b-bf0d-79ab9f037ce8" xlink:to="loc_us-gaap_HedgingRelationshipDomain_019f14d5-238e-764b-bf0d-79ab9f037ce8_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingRelationshipDomain_019f14d5-238e-7a4b-9502-2d719ea3c1b2" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_HedgingRelationshipDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis_019f14d5-238e-764b-bf0d-79ab9f037ce8" xlink:to="loc_us-gaap_HedgingRelationshipDomain_019f14d5-238e-7a4b-9502-2d719ea3c1b2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashFlowHedgingMember_019f14d5-238e-7c2f-bcde-47aac0346eda" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CashFlowHedgingMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_HedgingRelationshipDomain_019f14d5-238e-7a4b-9502-2d719ea3c1b2" xlink:to="loc_us-gaap_CashFlowHedgingMember_019f14d5-238e-7c2f-bcde-47aac0346eda" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingDesignationAxis_019f14d5-238e-750e-89f1-fa125ad5fa18" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_HedgingDesignationAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DerivativeTable_019f14d5-238e-7f3f-aaea-10723352b694" xlink:to="loc_us-gaap_HedgingDesignationAxis_019f14d5-238e-750e-89f1-fa125ad5fa18" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingDesignationDomain_019f14d5-238e-750e-89f1-fa125ad5fa18_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_HedgingDesignationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_HedgingDesignationAxis_019f14d5-238e-750e-89f1-fa125ad5fa18" xlink:to="loc_us-gaap_HedgingDesignationDomain_019f14d5-238e-750e-89f1-fa125ad5fa18_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingDesignationDomain_019f14d5-238e-7d75-900d-d04b490b818f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_HedgingDesignationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_HedgingDesignationAxis_019f14d5-238e-750e-89f1-fa125ad5fa18" xlink:to="loc_us-gaap_HedgingDesignationDomain_019f14d5-238e-7d75-900d-d04b490b818f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NondesignatedMember_019f14d5-238e-7272-b251-7665a0c5bf9d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NondesignatedMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_HedgingDesignationDomain_019f14d5-238e-7d75-900d-d04b490b818f" xlink:to="loc_us-gaap_NondesignatedMember_019f14d5-238e-7272-b251-7665a0c5bf9d" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsMeasuredOnNonrecurringBasisTextBlock_019f14d5-238e-74dc-8e5f-ea6e90e478b1" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueAssetsMeasuredOnNonrecurringBasisTextBlock"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeLineItems_019f14d5-238e-7ef9-b971-4e3cd039c42a" xlink:to="loc_us-gaap_FairValueAssetsMeasuredOnNonrecurringBasisTextBlock_019f14d5-238e-74dc-8e5f-ea6e90e478b1" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfFairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTableTextBlock_019f14d5-238e-7d3a-b96d-185ebe1dbdfe" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfFairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTableTextBlock"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeLineItems_019f14d5-238e-7ef9-b971-4e3cd039c42a" xlink:to="loc_us-gaap_ScheduleOfFairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTableTextBlock_019f14d5-238e-7d3a-b96d-185ebe1dbdfe" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OffsettingAssetsTableTextBlock_019f14d5-238e-7168-936e-2c80b8716560" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OffsettingAssetsTableTextBlock"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeLineItems_019f14d5-238e-7ef9-b971-4e3cd039c42a" xlink:to="loc_us-gaap_OffsettingAssetsTableTextBlock_019f14d5-238e-7168-936e-2c80b8716560" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OffsettingLiabilitiesTableTextBlock_019f14d5-238e-732c-94d3-c659190fa5f5" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OffsettingLiabilitiesTableTextBlock"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeLineItems_019f14d5-238e-7ef9-b971-4e3cd039c42a" xlink:to="loc_us-gaap_OffsettingLiabilitiesTableTextBlock_019f14d5-238e-732c-94d3-c659190fa5f5" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfInterestRateDerivativesTableTextBlock_019f14d5-238e-7129-918c-085f1f51f41a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfInterestRateDerivativesTableTextBlock"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeLineItems_019f14d5-238e-7ef9-b971-4e3cd039c42a" xlink:to="loc_us-gaap_ScheduleOfInterestRateDerivativesTableTextBlock_019f14d5-238e-7129-918c-085f1f51f41a" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfPriceRiskDerivativesTableTextBlock_019f14d5-238e-7b20-a897-1e6a4e5babbb" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfPriceRiskDerivativesTableTextBlock"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeLineItems_019f14d5-238e-7ef9-b971-4e3cd039c42a" xlink:to="loc_us-gaap_ScheduleOfPriceRiskDerivativesTableTextBlock_019f14d5-238e-7b20-a897-1e6a4e5babbb" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfDerivativeInstrumentsInStatementOfFinancialPositionFairValueTextBlock_019f14d5-238e-70a4-a13c-1b503678f2d1" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfDerivativeInstrumentsInStatementOfFinancialPositionFairValueTextBlock"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeLineItems_019f14d5-238e-7ef9-b971-4e3cd039c42a" xlink:to="loc_us-gaap_ScheduleOfDerivativeInstrumentsInStatementOfFinancialPositionFairValueTextBlock_019f14d5-238e-70a4-a13c-1b503678f2d1" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_rcl_NonDerivativeInstrumentsTableTextBlock_019f14d5-238e-755d-b9b6-69a36496f1c3" xlink:href="rcl-20260630.xsd#rcl_NonDerivativeInstrumentsTableTextBlock"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeLineItems_019f14d5-238e-7ef9-b971-4e3cd039c42a" xlink:to="loc_rcl_NonDerivativeInstrumentsTableTextBlock_019f14d5-238e-755d-b9b6-69a36496f1c3" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfDerivativeInstrumentsGainLossInStatementOfFinancialPerformanceTextBlock_019f14d5-238e-7cec-89f8-b064c7a60364" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfDerivativeInstrumentsGainLossInStatementOfFinancialPerformanceTextBlock"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeLineItems_019f14d5-238e-7ef9-b971-4e3cd039c42a" xlink:to="loc_us-gaap_ScheduleOfDerivativeInstrumentsGainLossInStatementOfFinancialPerformanceTextBlock_019f14d5-238e-7cec-89f8-b064c7a60364" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_rcl_NonDerivativeInstrumentsQualifyingAndDesignatedAsHedgingInstrumentsInNetInvestmentHedgesTableTextBlock_019f14d5-238e-70c3-b655-3fd527b943d0" xlink:href="rcl-20260630.xsd#rcl_NonDerivativeInstrumentsQualifyingAndDesignatedAsHedgingInstrumentsInNetInvestmentHedgesTableTextBlock"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeLineItems_019f14d5-238e-7ef9-b971-4e3cd039c42a" xlink:to="loc_rcl_NonDerivativeInstrumentsQualifyingAndDesignatedAsHedgingInstrumentsInNetInvestmentHedgesTableTextBlock_019f14d5-238e-70c3-b655-3fd527b943d0" xlink:type="arc" order="9"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.royalcaribbean.com/role/GeneralDetails" xlink:type="simple" xlink:href="rcl-20260630.xsd#GeneralDetails"/>
  <link:definitionLink xlink:role="http://www.royalcaribbean.com/role/GeneralDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_019f14d5-238d-72e0-be3a-d27d0c8bf9f8" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfEquityMethodInvestmentsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfEquityMethodInvestmentsTable_019f14d5-238d-7d4c-a154-234d44c181b9" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfEquityMethodInvestmentsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_019f14d5-238d-72e0-be3a-d27d0c8bf9f8" xlink:to="loc_us-gaap_ScheduleOfEquityMethodInvestmentsTable_019f14d5-238d-7d4c-a154-234d44c181b9" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_019f14d5-238d-7581-a980-6f025b3cf4ff" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsTable_019f14d5-238d-7d4c-a154-234d44c181b9" xlink:to="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_019f14d5-238d-7581-a980-6f025b3cf4ff" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_EquityMethodInvesteeNameDomain_019f14d5-238d-7581-a980-6f025b3cf4ff_default" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_EquityMethodInvesteeNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_019f14d5-238d-7581-a980-6f025b3cf4ff" xlink:to="loc_srt_EquityMethodInvesteeNameDomain_019f14d5-238d-7581-a980-6f025b3cf4ff_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_EquityMethodInvesteeNameDomain_019f14d5-238d-760a-90f5-36dc6c3be988" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_EquityMethodInvesteeNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_019f14d5-238d-7581-a980-6f025b3cf4ff" xlink:to="loc_srt_EquityMethodInvesteeNameDomain_019f14d5-238d-760a-90f5-36dc6c3be988" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_rcl_TUICruisesMember_019f14d5-238d-7999-bf76-63b5939bcec5" xlink:href="rcl-20260630.xsd#rcl_TUICruisesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_EquityMethodInvesteeNameDomain_019f14d5-238d-760a-90f5-36dc6c3be988" xlink:to="loc_rcl_TUICruisesMember_019f14d5-238d-7999-bf76-63b5939bcec5" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_rcl_NumberOfCruiseBrands_019f14d5-238d-72ac-90cb-5803c50011ec" xlink:href="rcl-20260630.xsd#rcl_NumberOfCruiseBrands"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_019f14d5-238d-72e0-be3a-d27d0c8bf9f8" xlink:to="loc_rcl_NumberOfCruiseBrands_019f14d5-238d-72ac-90cb-5803c50011ec" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityMethodInvestmentOwnershipPercentage_019f14d5-238d-7a03-a9e4-b922fbdd6d8e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EquityMethodInvestmentOwnershipPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_019f14d5-238d-72e0-be3a-d27d0c8bf9f8" xlink:to="loc_us-gaap_EquityMethodInvestmentOwnershipPercentage_019f14d5-238d-7a03-a9e4-b922fbdd6d8e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_rcl_NumberOfCruiseShips_019f14d5-238d-7b05-8181-4a675394634f" xlink:href="rcl-20260630.xsd#rcl_NumberOfCruiseShips"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_019f14d5-238d-72e0-be3a-d27d0c8bf9f8" xlink:to="loc_rcl_NumberOfCruiseShips_019f14d5-238d-7b05-8181-4a675394634f" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_rcl_NumberOfDestinations_019f14d5-238d-7eed-944c-3211ab5a2f65" xlink:href="rcl-20260630.xsd#rcl_NumberOfDestinations"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_019f14d5-238d-72e0-be3a-d27d0c8bf9f8" xlink:to="loc_rcl_NumberOfDestinations_019f14d5-238d-7eed-944c-3211ab5a2f65" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_rcl_NumberOfCountries_019f14d5-238d-7635-830e-c559f02c3a8a" xlink:href="rcl-20260630.xsd#rcl_NumberOfCountries"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_019f14d5-238d-72e0-be3a-d27d0c8bf9f8" xlink:to="loc_rcl_NumberOfCountries_019f14d5-238d-7635-830e-c559f02c3a8a" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_rcl_NumberOfContinents_019f14d5-238d-77f2-9f8b-c969fc8612bf" xlink:href="rcl-20260630.xsd#rcl_NumberOfContinents"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_019f14d5-238d-72e0-be3a-d27d0c8bf9f8" xlink:to="loc_rcl_NumberOfContinents_019f14d5-238d-77f2-9f8b-c969fc8612bf" xlink:type="arc" order="5"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.royalcaribbean.com/role/RevenueNarrativeDetails" xlink:type="simple" xlink:href="rcl-20260630.xsd#RevenueNarrativeDetails"/>
  <link:definitionLink xlink:role="http://www.royalcaribbean.com/role/RevenueNarrativeDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CapitalizedContractCostLineItems_019f14d5-238d-7a32-af09-8c245531c01e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CapitalizedContractCostLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CapitalizedContractCostTable_019f14d5-238d-7937-b0b8-dab779088353" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CapitalizedContractCostTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_CapitalizedContractCostLineItems_019f14d5-238d-7a32-af09-8c245531c01e" xlink:to="loc_us-gaap_CapitalizedContractCostTable_019f14d5-238d-7937-b0b8-dab779088353" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_019f14d5-238d-7a5d-bb9e-d9f31ae3dd03" 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_CapitalizedContractCostTable_019f14d5-238d-7937-b0b8-dab779088353" xlink:to="loc_srt_RangeAxis_019f14d5-238d-7a5d-bb9e-d9f31ae3dd03" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_019f14d5-238d-7a5d-bb9e-d9f31ae3dd03_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_019f14d5-238d-7a5d-bb9e-d9f31ae3dd03" xlink:to="loc_srt_RangeMember_019f14d5-238d-7a5d-bb9e-d9f31ae3dd03_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_019f14d5-238d-7317-b043-01b264db829f" 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_019f14d5-238d-7a5d-bb9e-d9f31ae3dd03" xlink:to="loc_srt_RangeMember_019f14d5-238d-7317-b043-01b264db829f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember_019f14d5-238d-7538-acb2-6cfe9e743d18" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_MinimumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_019f14d5-238d-7317-b043-01b264db829f" xlink:to="loc_srt_MinimumMember_019f14d5-238d-7538-acb2-6cfe9e743d18" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_019f14d5-238d-75f7-9a64-b503a63c0c7b" 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_019f14d5-238d-7317-b043-01b264db829f" xlink:to="loc_srt_MaximumMember_019f14d5-238d-75f7-9a64-b503a63c0c7b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductOrServiceAxis_019f14d5-238d-753c-92e9-c2cb682a456b" 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_CapitalizedContractCostTable_019f14d5-238d-7937-b0b8-dab779088353" xlink:to="loc_srt_ProductOrServiceAxis_019f14d5-238d-753c-92e9-c2cb682a456b" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_019f14d5-238d-753c-92e9-c2cb682a456b_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_019f14d5-238d-753c-92e9-c2cb682a456b" xlink:to="loc_srt_ProductsAndServicesDomain_019f14d5-238d-753c-92e9-c2cb682a456b_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_019f14d5-238d-7f84-9c1b-71fa5c3968f9" 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_019f14d5-238d-753c-92e9-c2cb682a456b" xlink:to="loc_srt_ProductsAndServicesDomain_019f14d5-238d-7f84-9c1b-71fa5c3968f9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_rcl_PortCostsMember_019f14d5-238d-7bd6-b844-189f0b4134fb" xlink:href="rcl-20260630.xsd#rcl_PortCostsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_019f14d5-238d-7f84-9c1b-71fa5c3968f9" xlink:to="loc_rcl_PortCostsMember_019f14d5-238d-7bd6-b844-189f0b4134fb" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CapitalizedContractCostAxis_019f14d5-238d-754c-bc0c-8a9e19532fce" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CapitalizedContractCostAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_CapitalizedContractCostTable_019f14d5-238d-7937-b0b8-dab779088353" xlink:to="loc_us-gaap_CapitalizedContractCostAxis_019f14d5-238d-754c-bc0c-8a9e19532fce" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CapitalizedContractCostDomain_019f14d5-238d-754c-bc0c-8a9e19532fce_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CapitalizedContractCostDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_CapitalizedContractCostAxis_019f14d5-238d-754c-bc0c-8a9e19532fce" xlink:to="loc_us-gaap_CapitalizedContractCostDomain_019f14d5-238d-754c-bc0c-8a9e19532fce_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CapitalizedContractCostDomain_019f14d5-238d-76a3-b7ae-de4489369649" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CapitalizedContractCostDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_CapitalizedContractCostAxis_019f14d5-238d-754c-bc0c-8a9e19532fce" xlink:to="loc_us-gaap_CapitalizedContractCostDomain_019f14d5-238d-76a3-b7ae-de4489369649" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_rcl_SalesCommissionsTransportationAndOtherMember_019f14d5-238d-71b9-97da-598adc711be3" xlink:href="rcl-20260630.xsd#rcl_SalesCommissionsTransportationAndOtherMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CapitalizedContractCostDomain_019f14d5-238d-76a3-b7ae-de4489369649" xlink:to="loc_rcl_SalesCommissionsTransportationAndOtherMember_019f14d5-238d-71b9-97da-598adc711be3" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_rcl_RevenuePerformanceObligationExpectedTimingOfSatisfactionPeriod_019f14d5-238d-71ef-bc74-7c2804ae7027" xlink:href="rcl-20260630.xsd#rcl_RevenuePerformanceObligationExpectedTimingOfSatisfactionPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CapitalizedContractCostLineItems_019f14d5-238d-7a32-af09-8c245531c01e" xlink:to="loc_rcl_RevenuePerformanceObligationExpectedTimingOfSatisfactionPeriod_019f14d5-238d-71ef-bc74-7c2804ae7027" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_019f14d5-238d-7a4d-bbda-f3b882a0ad7d" 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_CapitalizedContractCostLineItems_019f14d5-238d-7a32-af09-8c245531c01e" xlink:to="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_019f14d5-238d-7a4d-bbda-f3b882a0ad7d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractWithCustomerLiability_019f14d5-238d-717e-a962-c72bfabb1a49" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ContractWithCustomerLiability"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CapitalizedContractCostLineItems_019f14d5-238d-7a32-af09-8c245531c01e" xlink:to="loc_us-gaap_ContractWithCustomerLiability_019f14d5-238d-717e-a962-c72bfabb1a49" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractWithCustomerAssetNet_019f14d5-238d-7ff6-b539-4cd30aff4561" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ContractWithCustomerAssetNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CapitalizedContractCostLineItems_019f14d5-238d-7a32-af09-8c245531c01e" xlink:to="loc_us-gaap_ContractWithCustomerAssetNet_019f14d5-238d-7ff6-b539-4cd30aff4561" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CapitalizedContractCostGross_019f14d5-238d-7072-9f6e-0b0208a4cfee" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CapitalizedContractCostGross"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CapitalizedContractCostLineItems_019f14d5-238d-7a32-af09-8c245531c01e" xlink:to="loc_us-gaap_CapitalizedContractCostGross_019f14d5-238d-7072-9f6e-0b0208a4cfee" xlink:type="arc" order="4"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.royalcaribbean.com/role/RevenueScheduleofDisaggregationofRevenueDetails" xlink:type="simple" xlink:href="rcl-20260630.xsd#RevenueScheduleofDisaggregationofRevenueDetails"/>
  <link:definitionLink xlink:role="http://www.royalcaribbean.com/role/RevenueScheduleofDisaggregationofRevenueDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisaggregationOfRevenueLineItems_019f14d5-238d-71cc-8e9e-a91c6fe0aa1e" 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_019f14d5-238d-77dd-be79-55172ada70a8" 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_019f14d5-238d-71cc-8e9e-a91c6fe0aa1e" xlink:to="loc_us-gaap_DisaggregationOfRevenueTable_019f14d5-238d-77dd-be79-55172ada70a8" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductOrServiceAxis_019f14d5-238d-7586-a3d6-bc240a93af0b" 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_019f14d5-238d-77dd-be79-55172ada70a8" xlink:to="loc_srt_ProductOrServiceAxis_019f14d5-238d-7586-a3d6-bc240a93af0b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_019f14d5-238d-7586-a3d6-bc240a93af0b_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_019f14d5-238d-7586-a3d6-bc240a93af0b" xlink:to="loc_srt_ProductsAndServicesDomain_019f14d5-238d-7586-a3d6-bc240a93af0b_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_019f14d5-238d-7188-adec-725365da9549" 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_019f14d5-238d-7586-a3d6-bc240a93af0b" xlink:to="loc_srt_ProductsAndServicesDomain_019f14d5-238d-7188-adec-725365da9549" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_rcl_CruiseItineraryMember_019f14d5-238d-7936-a5d3-b03510d91573" xlink:href="rcl-20260630.xsd#rcl_CruiseItineraryMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_019f14d5-238d-7188-adec-725365da9549" xlink:to="loc_rcl_CruiseItineraryMember_019f14d5-238d-7936-a5d3-b03510d91573" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_rcl_OtherProductsAndServicesMember_019f14d5-238d-7e47-9444-6faf598ff493" xlink:href="rcl-20260630.xsd#rcl_OtherProductsAndServicesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_019f14d5-238d-7188-adec-725365da9549" xlink:to="loc_rcl_OtherProductsAndServicesMember_019f14d5-238d-7e47-9444-6faf598ff493" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_rcl_PassengerTicketMember_019f14d5-238d-74b8-9720-fbe7635b3f1c" xlink:href="rcl-20260630.xsd#rcl_PassengerTicketMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_019f14d5-238d-7188-adec-725365da9549" xlink:to="loc_rcl_PassengerTicketMember_019f14d5-238d-74b8-9720-fbe7635b3f1c" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_StatementGeographicalAxis_019f14d5-238d-7cbb-959f-589b7598423d" 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_019f14d5-238d-77dd-be79-55172ada70a8" xlink:to="loc_srt_StatementGeographicalAxis_019f14d5-238d-7cbb-959f-589b7598423d" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_SegmentGeographicalDomain_019f14d5-238d-7cbb-959f-589b7598423d_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_019f14d5-238d-7cbb-959f-589b7598423d" xlink:to="loc_srt_SegmentGeographicalDomain_019f14d5-238d-7cbb-959f-589b7598423d_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_SegmentGeographicalDomain_019f14d5-238d-7bb2-8b39-82fb2797ee58" 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_019f14d5-238d-7cbb-959f-589b7598423d" xlink:to="loc_srt_SegmentGeographicalDomain_019f14d5-238d-7bb2-8b39-82fb2797ee58" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_NorthAmericaMember_019f14d5-238d-7c2c-b916-c946dc01aa5b" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_NorthAmericaMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_019f14d5-238d-7bb2-8b39-82fb2797ee58" xlink:to="loc_srt_NorthAmericaMember_019f14d5-238d-7c2c-b916-c946dc01aa5b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_country_US_019f14d5-238d-7477-a0c4-d843958815e9" 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_NorthAmericaMember_019f14d5-238d-7c2c-b916-c946dc01aa5b" xlink:to="loc_country_US_019f14d5-238d-7477-a0c4-d843958815e9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_AsiaPacificMember_019f14d5-238d-7f1d-98fd-a15bea67a95a" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_AsiaPacificMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_019f14d5-238d-7bb2-8b39-82fb2797ee58" xlink:to="loc_srt_AsiaPacificMember_019f14d5-238d-7f1d-98fd-a15bea67a95a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_EuropeMember_019f14d5-238d-7ee7-b0a3-0e3b907f16e2" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_EuropeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_019f14d5-238d-7bb2-8b39-82fb2797ee58" xlink:to="loc_srt_EuropeMember_019f14d5-238d-7ee7-b0a3-0e3b907f16e2" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_rcl_OtherRegionMember_019f14d5-238d-71e1-9c72-a248ccd2477d" xlink:href="rcl-20260630.xsd#rcl_OtherRegionMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_019f14d5-238d-7bb2-8b39-82fb2797ee58" xlink:to="loc_rcl_OtherRegionMember_019f14d5-238d-71e1-9c72-a248ccd2477d" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_019f14d5-238d-713c-a79d-d513ea77ef31" 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_019f14d5-238d-71cc-8e9e-a91c6fe0aa1e" xlink:to="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_019f14d5-238d-713c-a79d-d513ea77ef31" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_rcl_PercentageOfTotalRevenuesByCountry_019f14d5-238d-7b23-bce8-1382c565e162" xlink:href="rcl-20260630.xsd#rcl_PercentageOfTotalRevenuesByCountry"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_019f14d5-238d-71cc-8e9e-a91c6fe0aa1e" xlink:to="loc_rcl_PercentageOfTotalRevenuesByCountry_019f14d5-238d-7b23-bce8-1382c565e162" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.royalcaribbean.com/role/InvestmentsandOtherAssetsNarrativeDetails" xlink:type="simple" xlink:href="rcl-20260630.xsd#InvestmentsandOtherAssetsNarrativeDetails"/>
  <link:definitionLink xlink:role="http://www.royalcaribbean.com/role/InvestmentsandOtherAssetsNarrativeDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfInvestmentsLineItems_019f14d5-238d-73ba-9efa-15e725e72b10" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfInvestmentsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentsInAndAdvancesToAffiliatesTable_019f14d5-238d-7870-8846-7759e97e1097" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InvestmentsInAndAdvancesToAffiliatesTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ScheduleOfInvestmentsLineItems_019f14d5-238d-73ba-9efa-15e725e72b10" xlink:to="loc_us-gaap_InvestmentsInAndAdvancesToAffiliatesTable_019f14d5-238d-7870-8846-7759e97e1097" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_019f14d5-238d-70b9-acf7-fabcb1146eb4" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_InvestmentsInAndAdvancesToAffiliatesTable_019f14d5-238d-7870-8846-7759e97e1097" xlink:to="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_019f14d5-238d-70b9-acf7-fabcb1146eb4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_EquityMethodInvesteeNameDomain_019f14d5-238d-70b9-acf7-fabcb1146eb4_default" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_EquityMethodInvesteeNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_019f14d5-238d-70b9-acf7-fabcb1146eb4" xlink:to="loc_srt_EquityMethodInvesteeNameDomain_019f14d5-238d-70b9-acf7-fabcb1146eb4_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_EquityMethodInvesteeNameDomain_019f14d5-238d-74ee-85de-598dbcb25ea9" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_EquityMethodInvesteeNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_019f14d5-238d-70b9-acf7-fabcb1146eb4" xlink:to="loc_srt_EquityMethodInvesteeNameDomain_019f14d5-238d-74ee-85de-598dbcb25ea9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_rcl_ICONInfrastructurePartnersVIL.P.Member_019f14d5-238d-7b54-b3e9-e0ba312055dc" xlink:href="rcl-20260630.xsd#rcl_ICONInfrastructurePartnersVIL.P.Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_EquityMethodInvesteeNameDomain_019f14d5-238d-74ee-85de-598dbcb25ea9" xlink:to="loc_rcl_ICONInfrastructurePartnersVIL.P.Member_019f14d5-238d-7b54-b3e9-e0ba312055dc" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_rcl_TUICruisesMember_019f14d5-238d-70ea-9e33-c9edfc57fb8b" xlink:href="rcl-20260630.xsd#rcl_TUICruisesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_EquityMethodInvesteeNameDomain_019f14d5-238d-74ee-85de-598dbcb25ea9" xlink:to="loc_rcl_TUICruisesMember_019f14d5-238d-70ea-9e33-c9edfc57fb8b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_rcl_GrandBahamaMember_019f14d5-238d-73b5-9131-bfa3892b66ce" xlink:href="rcl-20260630.xsd#rcl_GrandBahamaMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_EquityMethodInvesteeNameDomain_019f14d5-238d-74ee-85de-598dbcb25ea9" xlink:to="loc_rcl_GrandBahamaMember_019f14d5-238d-73b5-9131-bfa3892b66ce" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_rcl_FloatingDocksS.DERLMember_019f14d5-238d-7afe-acb1-54bd9ef97b6c" xlink:href="rcl-20260630.xsd#rcl_FloatingDocksS.DERLMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_EquityMethodInvesteeNameDomain_019f14d5-238d-74ee-85de-598dbcb25ea9" xlink:to="loc_rcl_FloatingDocksS.DERLMember_019f14d5-238d-7afe-acb1-54bd9ef97b6c" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidatedEntitiesAxis_019f14d5-238d-766e-b81a-39e41539826a" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ConsolidatedEntitiesAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_InvestmentsInAndAdvancesToAffiliatesTable_019f14d5-238d-7870-8846-7759e97e1097" xlink:to="loc_srt_ConsolidatedEntitiesAxis_019f14d5-238d-766e-b81a-39e41539826a" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidatedEntitiesDomain_019f14d5-238d-766e-b81a-39e41539826a_default" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ConsolidatedEntitiesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ConsolidatedEntitiesAxis_019f14d5-238d-766e-b81a-39e41539826a" xlink:to="loc_srt_ConsolidatedEntitiesDomain_019f14d5-238d-766e-b81a-39e41539826a_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidatedEntitiesDomain_019f14d5-238d-7b41-9066-5ecafc768552" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ConsolidatedEntitiesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ConsolidatedEntitiesAxis_019f14d5-238d-766e-b81a-39e41539826a" xlink:to="loc_srt_ConsolidatedEntitiesDomain_019f14d5-238d-7b41-9066-5ecafc768552" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_VariableInterestEntityNotPrimaryBeneficiaryMember_019f14d5-238d-7349-8d8d-1363520f40ff" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_VariableInterestEntityNotPrimaryBeneficiaryMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ConsolidatedEntitiesDomain_019f14d5-238d-7b41-9066-5ecafc768552" xlink:to="loc_us-gaap_VariableInterestEntityNotPrimaryBeneficiaryMember_019f14d5-238d-7349-8d8d-1363520f40ff" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_rcl_CruiseShipsOnOrderAxis_019f14d5-238d-7172-9b68-ef589f179e12" xlink:href="rcl-20260630.xsd#rcl_CruiseShipsOnOrderAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_InvestmentsInAndAdvancesToAffiliatesTable_019f14d5-238d-7870-8846-7759e97e1097" xlink:to="loc_rcl_CruiseShipsOnOrderAxis_019f14d5-238d-7172-9b68-ef589f179e12" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_rcl_CruiseShipsOnOrderDomain_019f14d5-238d-7172-9b68-ef589f179e12_default" xlink:href="rcl-20260630.xsd#rcl_CruiseShipsOnOrderDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_rcl_CruiseShipsOnOrderAxis_019f14d5-238d-7172-9b68-ef589f179e12" xlink:to="loc_rcl_CruiseShipsOnOrderDomain_019f14d5-238d-7172-9b68-ef589f179e12_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_rcl_CruiseShipsOnOrderDomain_019f14d5-238d-7fd5-804c-c9f95d5cb860" xlink:href="rcl-20260630.xsd#rcl_CruiseShipsOnOrderDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_rcl_CruiseShipsOnOrderAxis_019f14d5-238d-7172-9b68-ef589f179e12" xlink:to="loc_rcl_CruiseShipsOnOrderDomain_019f14d5-238d-7fd5-804c-c9f95d5cb860" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_rcl_TUICruiseShipsMember_019f14d5-238d-7dbb-8457-b2f17681b76b" xlink:href="rcl-20260630.xsd#rcl_TUICruiseShipsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_rcl_CruiseShipsOnOrderDomain_019f14d5-238d-7fd5-804c-c9f95d5cb860" xlink:to="loc_rcl_TUICruiseShipsMember_019f14d5-238d-7dbb-8457-b2f17681b76b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityMethodInvestmentOwnershipPercentage_019f14d5-238d-79cc-85b5-965b11e752fa" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EquityMethodInvestmentOwnershipPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfInvestmentsLineItems_019f14d5-238d-73ba-9efa-15e725e72b10" xlink:to="loc_us-gaap_EquityMethodInvestmentOwnershipPercentage_019f14d5-238d-79cc-85b5-965b11e752fa" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_rcl_EquityAndLoansDueFromEquityMethodInvestee_019f14d5-238d-71c5-b4e0-720824bed4fa" xlink:href="rcl-20260630.xsd#rcl_EquityAndLoansDueFromEquityMethodInvestee"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfInvestmentsLineItems_019f14d5-238d-73ba-9efa-15e725e72b10" xlink:to="loc_rcl_EquityAndLoansDueFromEquityMethodInvestee_019f14d5-238d-71c5-b4e0-720824bed4fa" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_rcl_RelatedPartyTransactionConstructionAgreementCovenantOwnershipPercentageMinimum_019f14d5-238d-7839-a8e7-af846f9969a0" xlink:href="rcl-20260630.xsd#rcl_RelatedPartyTransactionConstructionAgreementCovenantOwnershipPercentageMinimum"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfInvestmentsLineItems_019f14d5-238d-73ba-9efa-15e725e72b10" xlink:to="loc_rcl_RelatedPartyTransactionConstructionAgreementCovenantOwnershipPercentageMinimum_019f14d5-238d-7839-a8e7-af846f9969a0" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_rcl_NumberOfFloatingDrydocks_019f14d5-238d-7856-9545-9f4aa7e79a60" xlink:href="rcl-20260630.xsd#rcl_NumberOfFloatingDrydocks"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfInvestmentsLineItems_019f14d5-238d-73ba-9efa-15e725e72b10" xlink:to="loc_rcl_NumberOfFloatingDrydocks_019f14d5-238d-7856-9545-9f4aa7e79a60" xlink:type="arc" order="3"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.royalcaribbean.com/role/InvestmentsandOtherAssetsScheduleofNotesReceivableDuefromEquityInvestmentsDetails" xlink:type="simple" xlink:href="rcl-20260630.xsd#InvestmentsandOtherAssetsScheduleofNotesReceivableDuefromEquityInvestmentsDetails"/>
  <link:definitionLink xlink:role="http://www.royalcaribbean.com/role/InvestmentsandOtherAssetsScheduleofNotesReceivableDuefromEquityInvestmentsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_019f14d5-238d-7228-afe5-95f6e1070587" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccountsNotesAndLoansReceivableLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable_019f14d5-238d-7e05-98f2-028771683260" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_019f14d5-238d-7228-afe5-95f6e1070587" xlink:to="loc_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable_019f14d5-238d-7e05-98f2-028771683260" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfFinancingReceivableTypeOfBorrowerAxis_019f14d5-238d-7592-ad1e-2eb3b61f3424" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ClassOfFinancingReceivableTypeOfBorrowerAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable_019f14d5-238d-7e05-98f2-028771683260" xlink:to="loc_us-gaap_ClassOfFinancingReceivableTypeOfBorrowerAxis_019f14d5-238d-7592-ad1e-2eb3b61f3424" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfFinancingReceivableTypeOfBorrowerDomain_019f14d5-238d-7592-ad1e-2eb3b61f3424_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ClassOfFinancingReceivableTypeOfBorrowerDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_ClassOfFinancingReceivableTypeOfBorrowerAxis_019f14d5-238d-7592-ad1e-2eb3b61f3424" xlink:to="loc_us-gaap_ClassOfFinancingReceivableTypeOfBorrowerDomain_019f14d5-238d-7592-ad1e-2eb3b61f3424_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfFinancingReceivableTypeOfBorrowerDomain_019f14d5-238d-70c6-9433-ebedd5133b72" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ClassOfFinancingReceivableTypeOfBorrowerDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_ClassOfFinancingReceivableTypeOfBorrowerAxis_019f14d5-238d-7592-ad1e-2eb3b61f3424" xlink:to="loc_us-gaap_ClassOfFinancingReceivableTypeOfBorrowerDomain_019f14d5-238d-70c6-9433-ebedd5133b72" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_rcl_EquityInvestmentMember_019f14d5-238d-7189-8e0a-75bc0e05dc44" xlink:href="rcl-20260630.xsd#rcl_EquityInvestmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfFinancingReceivableTypeOfBorrowerDomain_019f14d5-238d-70c6-9433-ebedd5133b72" xlink:to="loc_rcl_EquityInvestmentMember_019f14d5-238d-7189-8e0a-75bc0e05dc44" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableExcludingAccruedInterestAfterAllowanceForCreditLoss_019f14d5-238d-7ad8-8f3d-4495f7db3292" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableExcludingAccruedInterestAfterAllowanceForCreditLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_019f14d5-238d-7228-afe5-95f6e1070587" xlink:to="loc_us-gaap_FinancingReceivableExcludingAccruedInterestAfterAllowanceForCreditLoss_019f14d5-238d-7ad8-8f3d-4495f7db3292" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableExcludingAccruedInterestAfterAllowanceForCreditLossCurrent_019f14d5-238d-713e-8093-43403375635b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableExcludingAccruedInterestAfterAllowanceForCreditLossCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_019f14d5-238d-7228-afe5-95f6e1070587" xlink:to="loc_us-gaap_FinancingReceivableExcludingAccruedInterestAfterAllowanceForCreditLossCurrent_019f14d5-238d-713e-8093-43403375635b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableExcludingAccruedInterestAfterAllowanceForCreditLossNoncurrent_019f14d5-238d-76db-87ea-cb845ba2b297" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableExcludingAccruedInterestAfterAllowanceForCreditLossNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_019f14d5-238d-7228-afe5-95f6e1070587" xlink:to="loc_us-gaap_FinancingReceivableExcludingAccruedInterestAfterAllowanceForCreditLossNoncurrent_019f14d5-238d-76db-87ea-cb845ba2b297" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.royalcaribbean.com/role/DebtScheduleofLongTermDebtDetails" xlink:type="simple" xlink:href="rcl-20260630.xsd#DebtScheduleofLongTermDebtDetails"/>
  <link:definitionLink xlink:role="http://www.royalcaribbean.com/role/DebtScheduleofLongTermDebtDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentLineItems_019f14d5-238d-7adc-b6c0-1e5d900e33b0" 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_019f14d5-238d-7874-b349-95d0971ca322" 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_019f14d5-238d-7adc-b6c0-1e5d900e33b0" xlink:to="loc_us-gaap_DebtInstrumentTable_019f14d5-238d-7874-b349-95d0971ca322" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_019f14d5-238d-76a3-b308-ef1cd8f7efdd" 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_DebtInstrumentTable_019f14d5-238d-7874-b349-95d0971ca322" xlink:to="loc_srt_RangeAxis_019f14d5-238d-76a3-b308-ef1cd8f7efdd" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_019f14d5-238d-76a3-b308-ef1cd8f7efdd_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_019f14d5-238d-76a3-b308-ef1cd8f7efdd" xlink:to="loc_srt_RangeMember_019f14d5-238d-76a3-b308-ef1cd8f7efdd_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_019f14d5-238d-7cc2-b551-41aec3f2c110" 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_019f14d5-238d-76a3-b308-ef1cd8f7efdd" xlink:to="loc_srt_RangeMember_019f14d5-238d-7cc2-b551-41aec3f2c110" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_019f14d5-238d-7e95-877a-a026d286684f" 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_019f14d5-238d-7cc2-b551-41aec3f2c110" xlink:to="loc_srt_MaximumMember_019f14d5-238d-7e95-877a-a026d286684f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_019f14d5-238d-7c2e-b34b-911235be2cc2" 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_019f14d5-238d-7874-b349-95d0971ca322" xlink:to="loc_us-gaap_LongtermDebtTypeAxis_019f14d5-238d-7c2e-b34b-911235be2cc2" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_019f14d5-238d-7c2e-b34b-911235be2cc2_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_019f14d5-238d-7c2e-b34b-911235be2cc2" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_019f14d5-238d-7c2e-b34b-911235be2cc2_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_019f14d5-238d-76de-8db4-6db1a558e720" 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_019f14d5-238d-7c2e-b34b-911235be2cc2" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_019f14d5-238d-76de-8db4-6db1a558e720" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_rcl_FixedRateDebtMember_019f14d5-238d-7550-ada1-2ee71c2bbec4" xlink:href="rcl-20260630.xsd#rcl_FixedRateDebtMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_019f14d5-238d-76de-8db4-6db1a558e720" xlink:to="loc_rcl_FixedRateDebtMember_019f14d5-238d-7550-ada1-2ee71c2bbec4" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SeniorNotesMember_019f14d5-238d-77c4-a95c-d3f2e3f9eb6c" 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_rcl_FixedRateDebtMember_019f14d5-238d-7550-ada1-2ee71c2bbec4" xlink:to="loc_us-gaap_SeniorNotesMember_019f14d5-238d-77c4-a95c-d3f2e3f9eb6c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UnsecuredDebtMember_019f14d5-238d-7abc-b046-54de0cd7f85d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_UnsecuredDebtMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_rcl_FixedRateDebtMember_019f14d5-238d-7550-ada1-2ee71c2bbec4" xlink:to="loc_us-gaap_UnsecuredDebtMember_019f14d5-238d-7abc-b046-54de0cd7f85d" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_rcl_VariableRateDebtMember_019f14d5-238d-736c-b906-92e995d7005a" xlink:href="rcl-20260630.xsd#rcl_VariableRateDebtMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_019f14d5-238d-76de-8db4-6db1a558e720" xlink:to="loc_rcl_VariableRateDebtMember_019f14d5-238d-736c-b906-92e995d7005a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevolvingCreditFacilityMember_019f14d5-238d-7c83-9d89-d6e53f8be37e" 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_rcl_VariableRateDebtMember_019f14d5-238d-736c-b906-92e995d7005a" xlink:to="loc_us-gaap_RevolvingCreditFacilityMember_019f14d5-238d-7c83-9d89-d6e53f8be37e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_rcl_USDUnsecuredTermLoansMember_019f14d5-238d-7fc6-b332-2c4f7fd4a3d6" xlink:href="rcl-20260630.xsd#rcl_USDUnsecuredTermLoansMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_rcl_VariableRateDebtMember_019f14d5-238d-736c-b906-92e995d7005a" xlink:to="loc_rcl_USDUnsecuredTermLoansMember_019f14d5-238d-7fc6-b332-2c4f7fd4a3d6" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_rcl_EuroUnsecuredTermLoansMember_019f14d5-238d-7ec5-b650-0b056d01c078" xlink:href="rcl-20260630.xsd#rcl_EuroUnsecuredTermLoansMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_rcl_VariableRateDebtMember_019f14d5-238d-736c-b906-92e995d7005a" xlink:to="loc_rcl_EuroUnsecuredTermLoansMember_019f14d5-238d-7ec5-b650-0b056d01c078" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_rcl_FinanceLeaseObligationsMember_019f14d5-238d-791c-b49c-eda59de2e5e3" xlink:href="rcl-20260630.xsd#rcl_FinanceLeaseObligationsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_019f14d5-238d-76de-8db4-6db1a558e720" xlink:to="loc_rcl_FinanceLeaseObligationsMember_019f14d5-238d-791c-b49c-eda59de2e5e3" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentAxis_019f14d5-238d-74f7-91e4-6a6ed56fb394" 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_019f14d5-238d-7874-b349-95d0971ca322" xlink:to="loc_us-gaap_DebtInstrumentAxis_019f14d5-238d-74f7-91e4-6a6ed56fb394" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_019f14d5-238d-74f7-91e4-6a6ed56fb394_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_019f14d5-238d-74f7-91e4-6a6ed56fb394" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_019f14d5-238d-74f7-91e4-6a6ed56fb394_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_019f14d5-238d-7990-b6db-54b7374f988a" 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_019f14d5-238d-74f7-91e4-6a6ed56fb394" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_019f14d5-238d-7990-b6db-54b7374f988a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_rcl_UnsecuredRevolvingCreditFacilityDue2024Member_019f14d5-238d-7844-a34f-304a90f04088" xlink:href="rcl-20260630.xsd#rcl_UnsecuredRevolvingCreditFacilityDue2024Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_019f14d5-238d-7990-b6db-54b7374f988a" xlink:to="loc_rcl_UnsecuredRevolvingCreditFacilityDue2024Member_019f14d5-238d-7844-a34f-304a90f04088" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtWeightedAverageInterestRate_019f14d5-238d-70ba-8246-b637eca71b71" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtWeightedAverageInterestRate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019f14d5-238d-7adc-b6c0-1e5d900e33b0" xlink:to="loc_us-gaap_DebtWeightedAverageInterestRate_019f14d5-238d-70ba-8246-b637eca71b71" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentCarryingAmount_019f14d5-238d-755d-bffa-c7069bf023e5" 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_019f14d5-238d-7adc-b6c0-1e5d900e33b0" xlink:to="loc_us-gaap_DebtInstrumentCarryingAmount_019f14d5-238d-755d-bffa-c7069bf023e5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_rcl_DebtLongTermAndShortTermIncludingFinancingCosts_019f14d5-238d-7e09-85d9-53d2b277f103" xlink:href="rcl-20260630.xsd#rcl_DebtLongTermAndShortTermIncludingFinancingCosts"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019f14d5-238d-7adc-b6c0-1e5d900e33b0" xlink:to="loc_rcl_DebtLongTermAndShortTermIncludingFinancingCosts_019f14d5-238d-7e09-85d9-53d2b277f103" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UnamortizedDebtIssuanceExpense_019f14d5-238d-776c-ab6f-c1b736a6e5cb" 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_019f14d5-238d-7adc-b6c0-1e5d900e33b0" xlink:to="loc_us-gaap_UnamortizedDebtIssuanceExpense_019f14d5-238d-776c-ab6f-c1b736a6e5cb" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtLongtermAndShorttermCombinedAmount_019f14d5-238d-702e-bcd6-423bcdbd8b69" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtLongtermAndShorttermCombinedAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019f14d5-238d-7adc-b6c0-1e5d900e33b0" xlink:to="loc_us-gaap_DebtLongtermAndShorttermCombinedAmount_019f14d5-238d-702e-bcd6-423bcdbd8b69" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtCurrent_019f14d5-238d-7cbd-8875-bfc7ab1916e3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019f14d5-238d-7adc-b6c0-1e5d900e33b0" xlink:to="loc_us-gaap_DebtCurrent_019f14d5-238d-7cbd-8875-bfc7ab1916e3" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtAndCapitalLeaseObligations_019f14d5-238d-7416-8694-682b33fd15fd" 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_019f14d5-238d-7adc-b6c0-1e5d900e33b0" xlink:to="loc_us-gaap_LongTermDebtAndCapitalLeaseObligations_019f14d5-238d-7416-8694-682b33fd15fd" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_019f14d5-238d-7986-a1f3-7d3aa4b47924" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentBasisSpreadOnVariableRate1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019f14d5-238d-7adc-b6c0-1e5d900e33b0" xlink:to="loc_us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_019f14d5-238d-7986-a1f3-7d3aa4b47924" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_019f14d5-238d-7a29-bba9-de6e004477bc" 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_019f14d5-238d-7adc-b6c0-1e5d900e33b0" xlink:to="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_019f14d5-238d-7a29-bba9-de6e004477bc" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditFacilityCommitmentFeePercentage_019f14d5-238d-7f5e-a527-d77aadfaeddb" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LineOfCreditFacilityCommitmentFeePercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019f14d5-238d-7adc-b6c0-1e5d900e33b0" xlink:to="loc_us-gaap_LineOfCreditFacilityCommitmentFeePercentage_019f14d5-238d-7f5e-a527-d77aadfaeddb" xlink:type="arc" order="9"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.royalcaribbean.com/role/DebtNarrativeDetails" xlink:type="simple" xlink:href="rcl-20260630.xsd#DebtNarrativeDetails"/>
  <link:definitionLink xlink:role="http://www.royalcaribbean.com/role/DebtNarrativeDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentLineItems_019f14d5-238d-783d-9fc2-f12fa225d190" 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_019f14d5-238d-7bd2-b044-ed310b2f2136" 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_019f14d5-238d-783d-9fc2-f12fa225d190" xlink:to="loc_us-gaap_DebtInstrumentTable_019f14d5-238d-7bd2-b044-ed310b2f2136" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityAxis_019f14d5-238d-79b3-8c4a-74caa4d7f236" 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_019f14d5-238d-7bd2-b044-ed310b2f2136" xlink:to="loc_us-gaap_CreditFacilityAxis_019f14d5-238d-79b3-8c4a-74caa4d7f236" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityDomain_019f14d5-238d-79b3-8c4a-74caa4d7f236_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_019f14d5-238d-79b3-8c4a-74caa4d7f236" xlink:to="loc_us-gaap_CreditFacilityDomain_019f14d5-238d-79b3-8c4a-74caa4d7f236_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityDomain_019f14d5-238d-7131-b9f1-9ccf4f5209a7" 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_019f14d5-238d-79b3-8c4a-74caa4d7f236" xlink:to="loc_us-gaap_CreditFacilityDomain_019f14d5-238d-7131-b9f1-9ccf4f5209a7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevolvingCreditFacilityMember_019f14d5-238d-7987-af77-4e89007025f7" 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_019f14d5-238d-7131-b9f1-9ccf4f5209a7" xlink:to="loc_us-gaap_RevolvingCreditFacilityMember_019f14d5-238d-7987-af77-4e89007025f7" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_019f14d5-238d-7e5a-a2b1-185e1c9dada6" 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_019f14d5-238d-7bd2-b044-ed310b2f2136" xlink:to="loc_us-gaap_LongtermDebtTypeAxis_019f14d5-238d-7e5a-a2b1-185e1c9dada6" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_019f14d5-238d-7e5a-a2b1-185e1c9dada6_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_019f14d5-238d-7e5a-a2b1-185e1c9dada6" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_019f14d5-238d-7e5a-a2b1-185e1c9dada6_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_019f14d5-238d-765a-9ec9-a96c1ce1bb27" 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_019f14d5-238d-7e5a-a2b1-185e1c9dada6" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_019f14d5-238d-765a-9ec9-a96c1ce1bb27" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditMember_019f14d5-238d-7404-aae3-089e2d05d2be" 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_019f14d5-238d-765a-9ec9-a96c1ce1bb27" xlink:to="loc_us-gaap_LineOfCreditMember_019f14d5-238d-7404-aae3-089e2d05d2be" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SeniorNotesMember_019f14d5-238d-7515-baf4-80afaae03353" 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_019f14d5-238d-765a-9ec9-a96c1ce1bb27" xlink:to="loc_us-gaap_SeniorNotesMember_019f14d5-238d-7515-baf4-80afaae03353" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UnsecuredDebtMember_019f1f4a-b1f3-7c95-a529-cd59f7e9d59f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_UnsecuredDebtMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_019f14d5-238d-765a-9ec9-a96c1ce1bb27" xlink:to="loc_us-gaap_UnsecuredDebtMember_019f1f4a-b1f3-7c95-a529-cd59f7e9d59f" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentAxis_019f14d5-238d-726e-bef8-98c6597c2443" 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_019f14d5-238d-7bd2-b044-ed310b2f2136" xlink:to="loc_us-gaap_DebtInstrumentAxis_019f14d5-238d-726e-bef8-98c6597c2443" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_019f14d5-238d-726e-bef8-98c6597c2443_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_019f14d5-238d-726e-bef8-98c6597c2443" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_019f14d5-238d-726e-bef8-98c6597c2443_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_019f14d5-238d-788a-b661-54d680002e4f" 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_019f14d5-238d-726e-bef8-98c6597c2443" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_019f14d5-238d-788a-b661-54d680002e4f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_rcl_AggregateRevolvingCapacityMember_019f14d5-238d-7eeb-8f96-13cfec73bc24" xlink:href="rcl-20260630.xsd#rcl_AggregateRevolvingCapacityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_019f14d5-238d-788a-b661-54d680002e4f" xlink:to="loc_rcl_AggregateRevolvingCapacityMember_019f14d5-238d-7eeb-8f96-13cfec73bc24" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_rcl_SeniorUnsecuredNotesDue2036And2038Member_019f14d5-238d-7dba-9bb2-7e841fb8ab29" xlink:href="rcl-20260630.xsd#rcl_SeniorUnsecuredNotesDue2036And2038Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_019f14d5-238d-788a-b661-54d680002e4f" xlink:to="loc_rcl_SeniorUnsecuredNotesDue2036And2038Member_019f14d5-238d-7dba-9bb2-7e841fb8ab29" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_rcl_SeniorUnsecuredNotesDue2036Member_019f14d5-238d-7318-a36d-b733627247ef" xlink:href="rcl-20260630.xsd#rcl_SeniorUnsecuredNotesDue2036Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_rcl_SeniorUnsecuredNotesDue2036And2038Member_019f14d5-238d-7dba-9bb2-7e841fb8ab29" xlink:to="loc_rcl_SeniorUnsecuredNotesDue2036Member_019f14d5-238d-7318-a36d-b733627247ef" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_rcl_SeniorUnsecuredNotesDue2038Member_019f14d5-238d-7f57-8bd0-103709e525ae" xlink:href="rcl-20260630.xsd#rcl_SeniorUnsecuredNotesDue2038Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_rcl_SeniorUnsecuredNotesDue2036And2038Member_019f14d5-238d-7dba-9bb2-7e841fb8ab29" xlink:to="loc_rcl_SeniorUnsecuredNotesDue2038Member_019f14d5-238d-7f57-8bd0-103709e525ae" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_rcl_LegendOfTheSeasUnsecuredTermLoanMember_019f1f4a-48c0-765e-973e-ed8e192a8084" xlink:href="rcl-20260630.xsd#rcl_LegendOfTheSeasUnsecuredTermLoanMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_019f14d5-238d-788a-b661-54d680002e4f" xlink:to="loc_rcl_LegendOfTheSeasUnsecuredTermLoanMember_019f1f4a-48c0-765e-973e-ed8e192a8084" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_019f14d5-238d-7f66-8c4f-c75e0b4228db" 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_DebtInstrumentTable_019f14d5-238d-7bd2-b044-ed310b2f2136" xlink:to="loc_srt_RangeAxis_019f14d5-238d-7f66-8c4f-c75e0b4228db" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_019f14d5-238d-7f66-8c4f-c75e0b4228db_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_019f14d5-238d-7f66-8c4f-c75e0b4228db" xlink:to="loc_srt_RangeMember_019f14d5-238d-7f66-8c4f-c75e0b4228db_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_019f14d5-238d-782d-9c86-d9b15ca0c452" 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_019f14d5-238d-7f66-8c4f-c75e0b4228db" xlink:to="loc_srt_RangeMember_019f14d5-238d-782d-9c86-d9b15ca0c452" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember_019f14d5-238d-72dd-aa8b-d92bf4697dbb" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_MinimumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_019f14d5-238d-782d-9c86-d9b15ca0c452" xlink:to="loc_srt_MinimumMember_019f14d5-238d-72dd-aa8b-d92bf4697dbb" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_019f14d5-238d-7f70-9058-90e5d6611be7" 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_019f14d5-238d-782d-9c86-d9b15ca0c452" xlink:to="loc_srt_MaximumMember_019f14d5-238d-7f70-9058-90e5d6611be7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TypeOfArrangementAxis_019f14d5-238d-7dbf-8cf9-d732285b2d61" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_TypeOfArrangementAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_019f14d5-238d-7bd2-b044-ed310b2f2136" xlink:to="loc_us-gaap_TypeOfArrangementAxis_019f14d5-238d-7dbf-8cf9-d732285b2d61" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ArrangementsAndNonarrangementTransactionsMember_019f14d5-238d-7dbf-8cf9-d732285b2d61_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ArrangementsAndNonarrangementTransactionsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_TypeOfArrangementAxis_019f14d5-238d-7dbf-8cf9-d732285b2d61" xlink:to="loc_us-gaap_ArrangementsAndNonarrangementTransactionsMember_019f14d5-238d-7dbf-8cf9-d732285b2d61_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ArrangementsAndNonarrangementTransactionsMember_019f14d5-238d-7120-8af3-24d4adbd77db" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ArrangementsAndNonarrangementTransactionsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_TypeOfArrangementAxis_019f14d5-238d-7dbf-8cf9-d732285b2d61" xlink:to="loc_us-gaap_ArrangementsAndNonarrangementTransactionsMember_019f14d5-238d-7120-8af3-24d4adbd77db" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_rcl_ContractWithCustomerLiabilityUpFrontPaymentArrangementMember_019f14d5-238d-7d3a-a0f9-4aa3ea5f5338" xlink:href="rcl-20260630.xsd#rcl_ContractWithCustomerLiabilityUpFrontPaymentArrangementMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ArrangementsAndNonarrangementTransactionsMember_019f14d5-238d-7120-8af3-24d4adbd77db" xlink:to="loc_rcl_ContractWithCustomerLiabilityUpFrontPaymentArrangementMember_019f14d5-238d-7d3a-a0f9-4aa3ea5f5338" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeAxis_019f802c-f4eb-7654-8e41-7c83a2535f63" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SubsequentEventTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_019f14d5-238d-7bd2-b044-ed310b2f2136" xlink:to="loc_us-gaap_SubsequentEventTypeAxis_019f802c-f4eb-7654-8e41-7c83a2535f63" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeDomain_019f802c-f4eb-7654-8e41-7c83a2535f63_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SubsequentEventTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_SubsequentEventTypeAxis_019f802c-f4eb-7654-8e41-7c83a2535f63" xlink:to="loc_us-gaap_SubsequentEventTypeDomain_019f802c-f4eb-7654-8e41-7c83a2535f63_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeDomain_019f802c-f4eb-79bf-911f-5daf835aae11" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SubsequentEventTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_SubsequentEventTypeAxis_019f802c-f4eb-7654-8e41-7c83a2535f63" xlink:to="loc_us-gaap_SubsequentEventTypeDomain_019f802c-f4eb-79bf-911f-5daf835aae11" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventMember_019f802d-09da-7043-bb83-d3d4cf5e5bfc" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SubsequentEventMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsequentEventTypeDomain_019f802c-f4eb-79bf-911f-5daf835aae11" xlink:to="loc_us-gaap_SubsequentEventMember_019f802d-09da-7043-bb83-d3d4cf5e5bfc" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_019f14d5-238d-728d-bc21-7e1e555b70c6" 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_019f14d5-238d-783d-9fc2-f12fa225d190" xlink:to="loc_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_019f14d5-238d-728d-bc21-7e1e555b70c6" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_rcl_NumberOfRevolvingCreditFacilityAmendments_019f14d5-238d-7aa9-82bc-0745b2da613d" xlink:href="rcl-20260630.xsd#rcl_NumberOfRevolvingCreditFacilityAmendments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019f14d5-238d-783d-9fc2-f12fa225d190" xlink:to="loc_rcl_NumberOfRevolvingCreditFacilityAmendments_019f14d5-238d-7aa9-82bc-0745b2da613d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity_019f945a-7c0a-7a93-b634-5b23589fc83c" 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_019f14d5-238d-783d-9fc2-f12fa225d190" xlink:to="loc_us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity_019f945a-7c0a-7a93-b634-5b23589fc83c" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_rcl_LineOfCreditFacilityAccordionFeatureHigherBorrowingCapacityOption_019f8676-1570-754e-a3a3-0ea80baa2e9b" xlink:href="rcl-20260630.xsd#rcl_LineOfCreditFacilityAccordionFeatureHigherBorrowingCapacityOption"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019f14d5-238d-783d-9fc2-f12fa225d190" xlink:to="loc_rcl_LineOfCreditFacilityAccordionFeatureHigherBorrowingCapacityOption_019f8676-1570-754e-a3a3-0ea80baa2e9b" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_rcl_LineOfCreditFacilityAccordionFeatureIncreaseLimit_019f8676-1570-78af-bee5-146fe3e28fd4" xlink:href="rcl-20260630.xsd#rcl_LineOfCreditFacilityAccordionFeatureIncreaseLimit"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019f14d5-238d-783d-9fc2-f12fa225d190" xlink:to="loc_rcl_LineOfCreditFacilityAccordionFeatureIncreaseLimit_019f8676-1570-78af-bee5-146fe3e28fd4" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentFaceAmount_019f14d5-238d-7c41-964c-03dce607de36" 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_DebtInstrumentLineItems_019f14d5-238d-783d-9fc2-f12fa225d190" xlink:to="loc_us-gaap_DebtInstrumentFaceAmount_019f14d5-238d-7c41-964c-03dce607de36" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromIssuanceOfUnsecuredDebt_019f14d5-238d-780a-ad0a-1be78d13427f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ProceedsFromIssuanceOfUnsecuredDebt"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019f14d5-238d-783d-9fc2-f12fa225d190" xlink:to="loc_us-gaap_ProceedsFromIssuanceOfUnsecuredDebt_019f14d5-238d-780a-ad0a-1be78d13427f" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_019f14d5-238d-7589-86cf-065b97a01340" 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_019f14d5-238d-783d-9fc2-f12fa225d190" xlink:to="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_019f14d5-238d-7589-86cf-065b97a01340" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_rcl_DebtInstrumentPercentageGuaranteed_019f1f4b-dba2-7cf4-8501-51f0353690bd" xlink:href="rcl-20260630.xsd#rcl_DebtInstrumentPercentageGuaranteed"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019f14d5-238d-783d-9fc2-f12fa225d190" xlink:to="loc_rcl_DebtInstrumentPercentageGuaranteed_019f1f4b-dba2-7cf4-8501-51f0353690bd" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentTerm_019f1f4c-0c30-7679-805e-c75bbd0bb0aa" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentTerm"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019f14d5-238d-783d-9fc2-f12fa225d190" xlink:to="loc_us-gaap_DebtInstrumentTerm_019f1f4c-0c30-7679-805e-c75bbd0bb0aa" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_019f8f31-06fd-72b6-9231-f9a906f5b653" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentBasisSpreadOnVariableRate1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019f14d5-238d-783d-9fc2-f12fa225d190" xlink:to="loc_us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_019f8f31-06fd-72b6-9231-f9a906f5b653" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_rcl_CreditAgencyFeesPercentageOfLoanAmountPayable_019f14d5-238d-709d-8ef9-d970de2896b0" xlink:href="rcl-20260630.xsd#rcl_CreditAgencyFeesPercentageOfLoanAmountPayable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019f14d5-238d-783d-9fc2-f12fa225d190" xlink:to="loc_rcl_CreditAgencyFeesPercentageOfLoanAmountPayable_019f14d5-238d-709d-8ef9-d970de2896b0" xlink:type="arc" order="11"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.royalcaribbean.com/role/LeasesDetails" xlink:type="simple" xlink:href="rcl-20260630.xsd#LeasesDetails"/>
  <link:definitionLink xlink:role="http://www.royalcaribbean.com/role/LeasesDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeLeaseDescriptionLineItems_019f14d5-238d-7452-a348-fe408c8575bd" 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_019f14d5-238d-75ff-8990-aaa3c1b209cd" 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_019f14d5-238d-7452-a348-fe408c8575bd" xlink:to="loc_us-gaap_LesseeLeaseDescriptionTable_019f14d5-238d-75ff-8990-aaa3c1b209cd" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_019f14d5-238d-72f6-bddd-6c620cbea866" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PropertyPlantAndEquipmentByTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LesseeLeaseDescriptionTable_019f14d5-238d-75ff-8990-aaa3c1b209cd" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_019f14d5-238d-72f6-bddd-6c620cbea866" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_019f14d5-238d-72f6-bddd-6c620cbea866_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PropertyPlantAndEquipmentTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_019f14d5-238d-72f6-bddd-6c620cbea866" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_019f14d5-238d-72f6-bddd-6c620cbea866_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_019f14d5-238d-76e8-8408-47b27917425a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PropertyPlantAndEquipmentTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_019f14d5-238d-72f6-bddd-6c620cbea866" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_019f14d5-238d-76e8-8408-47b27917425a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_rcl_BerthingAgreementMember_019f14d5-238d-7ab4-82e5-b58c0cc30220" xlink:href="rcl-20260630.xsd#rcl_BerthingAgreementMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_019f14d5-238d-76e8-8408-47b27917425a" xlink:to="loc_rcl_BerthingAgreementMember_019f14d5-238d-7ab4-82e5-b58c0cc30220" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BuildingMember_019f14d5-238d-7d4a-8328-3ce1943d1c7d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BuildingMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_019f14d5-238d-76e8-8408-47b27917425a" xlink:to="loc_us-gaap_BuildingMember_019f14d5-238d-7d4a-8328-3ce1943d1c7d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LandAndBuildingMember_019f14d5-238d-7fb8-ae0c-4e814a243511" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LandAndBuildingMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_019f14d5-238d-76e8-8408-47b27917425a" xlink:to="loc_us-gaap_LandAndBuildingMember_019f14d5-238d-7fb8-ae0c-4e814a243511" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_019f14d5-238d-7a61-bca5-284bcf1f3ee0" 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_019f14d5-238d-75ff-8990-aaa3c1b209cd" xlink:to="loc_srt_RangeAxis_019f14d5-238d-7a61-bca5-284bcf1f3ee0" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_019f14d5-238d-7a61-bca5-284bcf1f3ee0_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_019f14d5-238d-7a61-bca5-284bcf1f3ee0" xlink:to="loc_srt_RangeMember_019f14d5-238d-7a61-bca5-284bcf1f3ee0_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_019f14d5-238d-70d9-a71d-c239582a6668" 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_019f14d5-238d-7a61-bca5-284bcf1f3ee0" xlink:to="loc_srt_RangeMember_019f14d5-238d-70d9-a71d-c239582a6668" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember_019f14d5-238d-71f8-9ef5-fd09f4686e9b" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_MinimumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_019f14d5-238d-70d9-a71d-c239582a6668" xlink:to="loc_srt_MinimumMember_019f14d5-238d-71f8-9ef5-fd09f4686e9b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_019f14d5-238d-7893-83d1-931838ea4a88" 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_019f14d5-238d-70d9-a71d-c239582a6668" xlink:to="loc_srt_MaximumMember_019f14d5-238d-7893-83d1-931838ea4a88" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseLiability_019f14d5-238d-742d-b41b-8150fe9042e4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OperatingLeaseLiability"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LesseeLeaseDescriptionLineItems_019f14d5-238d-7452-a348-fe408c8575bd" xlink:to="loc_us-gaap_OperatingLeaseLiability_019f14d5-238d-742d-b41b-8150fe9042e4" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_rcl_LesseeOperatingLeaseToBePaidWhenCertainConditionsMet_019f14d5-238d-7d65-841b-3d0c13d92947" xlink:href="rcl-20260630.xsd#rcl_LesseeOperatingLeaseToBePaidWhenCertainConditionsMet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LesseeLeaseDescriptionLineItems_019f14d5-238d-7452-a348-fe408c8575bd" xlink:to="loc_rcl_LesseeOperatingLeaseToBePaidWhenCertainConditionsMet_019f14d5-238d-7d65-841b-3d0c13d92947" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_rcl_LesseeOperatingLeaseLiabilityPercentageIncreaseOfAnnualLeasePayment_019f14d5-238d-7759-8968-822069dc812e" xlink:href="rcl-20260630.xsd#rcl_LesseeOperatingLeaseLiabilityPercentageIncreaseOfAnnualLeasePayment"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LesseeLeaseDescriptionLineItems_019f14d5-238d-7452-a348-fe408c8575bd" xlink:to="loc_rcl_LesseeOperatingLeaseLiabilityPercentageIncreaseOfAnnualLeasePayment_019f14d5-238d-7759-8968-822069dc812e" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseRenewalTerm_019f14d5-238d-7cab-ac61-32872a610b98" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LesseeOperatingLeaseRenewalTerm"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LesseeLeaseDescriptionLineItems_019f14d5-238d-7452-a348-fe408c8575bd" xlink:to="loc_us-gaap_LesseeOperatingLeaseRenewalTerm_019f14d5-238d-7cab-ac61-32872a610b98" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_rcl_LesseeFinanceLeaseNumberOfExtensionOptions_019f14d5-238d-7dda-a51b-92dd072f3710" xlink:href="rcl-20260630.xsd#rcl_LesseeFinanceLeaseNumberOfExtensionOptions"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LesseeLeaseDescriptionLineItems_019f14d5-238d-7452-a348-fe408c8575bd" xlink:to="loc_rcl_LesseeFinanceLeaseNumberOfExtensionOptions_019f14d5-238d-7dda-a51b-92dd072f3710" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeFinanceLeaseRenewalTerm1_019f14d5-238d-72a0-a172-13221e17adf2" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LesseeFinanceLeaseRenewalTerm1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LesseeLeaseDescriptionLineItems_019f14d5-238d-7452-a348-fe408c8575bd" xlink:to="loc_us-gaap_LesseeFinanceLeaseRenewalTerm1_019f14d5-238d-72a0-a172-13221e17adf2" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinanceLeaseLiability_019f14d5-238d-7eb2-953f-93ddf6024d87" 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_LesseeLeaseDescriptionLineItems_019f14d5-238d-7452-a348-fe408c8575bd" xlink:to="loc_us-gaap_FinanceLeaseLiability_019f14d5-238d-7eb2-953f-93ddf6024d87" xlink:type="arc" order="6"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.royalcaribbean.com/role/CommitmentsandContingenciesScheduleofFutureCapitalCommitmentsDetails" xlink:type="simple" xlink:href="rcl-20260630.xsd#CommitmentsandContingenciesScheduleofFutureCapitalCommitmentsDetails"/>
  <link:definitionLink xlink:role="http://www.royalcaribbean.com/role/CommitmentsandContingenciesScheduleofFutureCapitalCommitmentsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermPurchaseCommitmentLineItems_019f14d5-238d-7810-a8ed-1d465ce7e78e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongTermPurchaseCommitmentLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermPurchaseCommitmentTable_019f14d5-238d-7ee3-9547-5c99d711d486" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongTermPurchaseCommitmentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_LongTermPurchaseCommitmentLineItems_019f14d5-238d-7810-a8ed-1d465ce7e78e" xlink:to="loc_us-gaap_LongTermPurchaseCommitmentTable_019f14d5-238d-7ee3-9547-5c99d711d486" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_019f14d5-238d-73fe-bd43-096062efed94" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LongTermPurchaseCommitmentTable_019f14d5-238d-7ee3-9547-5c99d711d486" xlink:to="loc_dei_LegalEntityAxis_019f14d5-238d-73fe-bd43-096062efed94" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_019f14d5-238d-73fe-bd43-096062efed94_default" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_019f14d5-238d-73fe-bd43-096062efed94" xlink:to="loc_dei_EntityDomain_019f14d5-238d-73fe-bd43-096062efed94_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_019f14d5-238d-79ba-80f7-b0be059ccc0f" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_019f14d5-238d-73fe-bd43-096062efed94" xlink:to="loc_dei_EntityDomain_019f14d5-238d-79ba-80f7-b0be059ccc0f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_rcl_RoyalCaribbeanMember_019f14d5-238d-7b00-b05f-5f0ec985a8ef" xlink:href="rcl-20260630.xsd#rcl_RoyalCaribbeanMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_019f14d5-238d-79ba-80f7-b0be059ccc0f" xlink:to="loc_rcl_RoyalCaribbeanMember_019f14d5-238d-7b00-b05f-5f0ec985a8ef" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_rcl_CelebrityCruisesMember_019f14d5-238d-7028-9bcf-2c1ec1fbd0f1" xlink:href="rcl-20260630.xsd#rcl_CelebrityCruisesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_019f14d5-238d-79ba-80f7-b0be059ccc0f" xlink:to="loc_rcl_CelebrityCruisesMember_019f14d5-238d-7028-9bcf-2c1ec1fbd0f1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_rcl_MeinSchiffMember_019f14d5-238d-78cf-bdde-fd113b1fb6c2" xlink:href="rcl-20260630.xsd#rcl_MeinSchiffMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_019f14d5-238d-79ba-80f7-b0be059ccc0f" xlink:to="loc_rcl_MeinSchiffMember_019f14d5-238d-78cf-bdde-fd113b1fb6c2" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_rcl_CruiseShipsOnOrderAxis_019f14d5-238d-76f3-b937-d62c5864dac4" xlink:href="rcl-20260630.xsd#rcl_CruiseShipsOnOrderAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LongTermPurchaseCommitmentTable_019f14d5-238d-7ee3-9547-5c99d711d486" xlink:to="loc_rcl_CruiseShipsOnOrderAxis_019f14d5-238d-76f3-b937-d62c5864dac4" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_rcl_CruiseShipsOnOrderDomain_019f14d5-238d-76f3-b937-d62c5864dac4_default" xlink:href="rcl-20260630.xsd#rcl_CruiseShipsOnOrderDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_rcl_CruiseShipsOnOrderAxis_019f14d5-238d-76f3-b937-d62c5864dac4" xlink:to="loc_rcl_CruiseShipsOnOrderDomain_019f14d5-238d-76f3-b937-d62c5864dac4_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_rcl_CruiseShipsOnOrderDomain_019f14d5-238d-7b0a-a010-cff1c876275e" xlink:href="rcl-20260630.xsd#rcl_CruiseShipsOnOrderDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_rcl_CruiseShipsOnOrderAxis_019f14d5-238d-76f3-b937-d62c5864dac4" xlink:to="loc_rcl_CruiseShipsOnOrderDomain_019f14d5-238d-7b0a-a010-cff1c876275e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_rcl_OasisClassUnnamedShipMember_019f14d5-238d-7af9-84cf-d771c8b99c7c" xlink:href="rcl-20260630.xsd#rcl_OasisClassUnnamedShipMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_rcl_CruiseShipsOnOrderDomain_019f14d5-238d-7b0a-a010-cff1c876275e" xlink:to="loc_rcl_OasisClassUnnamedShipMember_019f14d5-238d-7af9-84cf-d771c8b99c7c" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_rcl_IconClassHeroOfTheSeasMember_019f14d5-238d-7c91-a882-0a9c383f3304" xlink:href="rcl-20260630.xsd#rcl_IconClassHeroOfTheSeasMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_rcl_CruiseShipsOnOrderDomain_019f14d5-238d-7b0a-a010-cff1c876275e" xlink:to="loc_rcl_IconClassHeroOfTheSeasMember_019f14d5-238d-7c91-a882-0a9c383f3304" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_rcl_IconClassUnnamedShipMember_019f14d5-238d-7523-b02d-0b1b8d3713ca" xlink:href="rcl-20260630.xsd#rcl_IconClassUnnamedShipMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_rcl_CruiseShipsOnOrderDomain_019f14d5-238d-7b0a-a010-cff1c876275e" xlink:to="loc_rcl_IconClassUnnamedShipMember_019f14d5-238d-7523-b02d-0b1b8d3713ca" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_rcl_IconClassUnnamedShipTwoMember_019f432c-615f-7ea3-b624-5f861bc5eaca" xlink:href="rcl-20260630.xsd#rcl_IconClassUnnamedShipTwoMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_rcl_CruiseShipsOnOrderDomain_019f14d5-238d-7b0a-a010-cff1c876275e" xlink:to="loc_rcl_IconClassUnnamedShipTwoMember_019f432c-615f-7ea3-b624-5f861bc5eaca" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_rcl_DiscoveryClassUnnamed1Member_019f14d5-238d-7c4c-aa45-194c78f6efdf" xlink:href="rcl-20260630.xsd#rcl_DiscoveryClassUnnamed1Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_rcl_CruiseShipsOnOrderDomain_019f14d5-238d-7b0a-a010-cff1c876275e" xlink:to="loc_rcl_DiscoveryClassUnnamed1Member_019f14d5-238d-7c4c-aa45-194c78f6efdf" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_rcl_DiscoveryClassUnnamed2Member_019f14d5-238d-7f69-aa18-9ca026060ba8" xlink:href="rcl-20260630.xsd#rcl_DiscoveryClassUnnamed2Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_rcl_CruiseShipsOnOrderDomain_019f14d5-238d-7b0a-a010-cff1c876275e" xlink:to="loc_rcl_DiscoveryClassUnnamed2Member_019f14d5-238d-7f69-aa18-9ca026060ba8" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_rcl_EdgeClassCelebrityXciteMember_019f14d5-238d-74aa-9e96-39cc8ee4aadd" xlink:href="rcl-20260630.xsd#rcl_EdgeClassCelebrityXciteMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_rcl_CruiseShipsOnOrderDomain_019f14d5-238d-7b0a-a010-cff1c876275e" xlink:to="loc_rcl_EdgeClassCelebrityXciteMember_019f14d5-238d-74aa-9e96-39cc8ee4aadd" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_rcl_CelebrityCompassMember_019f14d5-238d-740e-aaaf-0f204cbfff35" xlink:href="rcl-20260630.xsd#rcl_CelebrityCompassMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_rcl_CruiseShipsOnOrderDomain_019f14d5-238d-7b0a-a010-cff1c876275e" xlink:to="loc_rcl_CelebrityCompassMember_019f14d5-238d-740e-aaaf-0f204cbfff35" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_rcl_CelebritySeekerMember_019f14d5-238d-739a-b5b1-9905370cce59" xlink:href="rcl-20260630.xsd#rcl_CelebritySeekerMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_rcl_CruiseShipsOnOrderDomain_019f14d5-238d-7b0a-a010-cff1c876275e" xlink:to="loc_rcl_CelebritySeekerMember_019f14d5-238d-739a-b5b1-9905370cce59" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_rcl_CelebrityRiverCruisesUnnamedShip1Member_019f14d5-238d-71aa-8b00-941c4e3a368a" xlink:href="rcl-20260630.xsd#rcl_CelebrityRiverCruisesUnnamedShip1Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_rcl_CruiseShipsOnOrderDomain_019f14d5-238d-7b0a-a010-cff1c876275e" xlink:to="loc_rcl_CelebrityRiverCruisesUnnamedShip1Member_019f14d5-238d-71aa-8b00-941c4e3a368a" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_rcl_CelebrityRiverCruisesUnnamedShip2Member_019f14d5-238d-7c2c-b8d6-5f54172c75e1" xlink:href="rcl-20260630.xsd#rcl_CelebrityRiverCruisesUnnamedShip2Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_rcl_CruiseShipsOnOrderDomain_019f14d5-238d-7b0a-a010-cff1c876275e" xlink:to="loc_rcl_CelebrityRiverCruisesUnnamedShip2Member_019f14d5-238d-7c2c-b8d6-5f54172c75e1" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_rcl_MeinSchiffUnnamedShip1Member_019f14d5-238d-704f-bea1-6f500629529c" xlink:href="rcl-20260630.xsd#rcl_MeinSchiffUnnamedShip1Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_rcl_CruiseShipsOnOrderDomain_019f14d5-238d-7b0a-a010-cff1c876275e" xlink:to="loc_rcl_MeinSchiffUnnamedShip1Member_019f14d5-238d-704f-bea1-6f500629529c" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_rcl_MeinSchiffUnnamedShip2Member_019f14d5-238d-7bf3-b5a9-2f0b9e7c2c08" xlink:href="rcl-20260630.xsd#rcl_MeinSchiffUnnamedShip2Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_rcl_CruiseShipsOnOrderDomain_019f14d5-238d-7b0a-a010-cff1c876275e" xlink:to="loc_rcl_MeinSchiffUnnamedShip2Member_019f14d5-238d-7bf3-b5a9-2f0b9e7c2c08" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_rcl_ShipPassengerCapacityBerths_019f14d5-238d-7963-93d8-c4848177b306" xlink:href="rcl-20260630.xsd#rcl_ShipPassengerCapacityBerths"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongTermPurchaseCommitmentLineItems_019f14d5-238d-7810-a8ed-1d465ce7e78e" xlink:to="loc_rcl_ShipPassengerCapacityBerths_019f14d5-238d-7963-93d8-c4848177b306" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.royalcaribbean.com/role/CommitmentsandContingenciesNarrativeDetails" xlink:type="simple" xlink:href="rcl-20260630.xsd#CommitmentsandContingenciesNarrativeDetails"/>
  <link:definitionLink xlink:role="http://www.royalcaribbean.com/role/CommitmentsandContingenciesNarrativeDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UnrecordedUnconditionalPurchaseObligationLineItems_019f14d5-238e-7120-970d-0347b642f6c1" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_UnrecordedUnconditionalPurchaseObligationLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UnrecordedUnconditionalPurchaseObligationTable_019f14d5-238d-7509-b7a3-a31ee5dc2edc" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_UnrecordedUnconditionalPurchaseObligationTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_UnrecordedUnconditionalPurchaseObligationLineItems_019f14d5-238e-7120-970d-0347b642f6c1" xlink:to="loc_us-gaap_UnrecordedUnconditionalPurchaseObligationTable_019f14d5-238d-7509-b7a3-a31ee5dc2edc" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentAxis_019f14d5-238d-7d34-950c-25f8bab4f4bb" 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_UnrecordedUnconditionalPurchaseObligationTable_019f14d5-238d-7509-b7a3-a31ee5dc2edc" xlink:to="loc_us-gaap_DebtInstrumentAxis_019f14d5-238d-7d34-950c-25f8bab4f4bb" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_019f14d5-238d-7d34-950c-25f8bab4f4bb_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_019f14d5-238d-7d34-950c-25f8bab4f4bb" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_019f14d5-238d-7d34-950c-25f8bab4f4bb_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_019f14d5-238d-7ecf-997a-103514adaeea" 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_019f14d5-238d-7d34-950c-25f8bab4f4bb" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_019f14d5-238d-7ecf-997a-103514adaeea" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_rcl_FifthIconClassShipTermLoanMember_019f14d5-238d-7061-b8cb-c8cfcba59fec" xlink:href="rcl-20260630.xsd#rcl_FifthIconClassShipTermLoanMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_019f14d5-238d-7ecf-997a-103514adaeea" xlink:to="loc_rcl_FifthIconClassShipTermLoanMember_019f14d5-238d-7061-b8cb-c8cfcba59fec" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_rcl_FirstAndSecondDiscoveryClassTermLoanMember_019f14d5-238d-73a3-b74f-363ae2376af1" xlink:href="rcl-20260630.xsd#rcl_FirstAndSecondDiscoveryClassTermLoanMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_019f14d5-238d-7ecf-997a-103514adaeea" xlink:to="loc_rcl_FirstAndSecondDiscoveryClassTermLoanMember_019f14d5-238d-73a3-b74f-363ae2376af1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditMember_019f14d5-238d-7c36-a7f4-70f1979fcb85" 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_DebtInstrumentNameDomain_019f14d5-238d-7ecf-997a-103514adaeea" xlink:to="loc_us-gaap_LineOfCreditMember_019f14d5-238d-7c36-a7f4-70f1979fcb85" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesMember_019f14d5-238d-703d-8d17-8981b57de775" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtSecuritiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_019f14d5-238d-7ecf-997a-103514adaeea" xlink:to="loc_us-gaap_DebtSecuritiesMember_019f14d5-238d-703d-8d17-8981b57de775" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_019f14d5-238d-74ce-a463-e9245ed598ae" 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_UnrecordedUnconditionalPurchaseObligationTable_019f14d5-238d-7509-b7a3-a31ee5dc2edc" xlink:to="loc_srt_RangeAxis_019f14d5-238d-74ce-a463-e9245ed598ae" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_019f14d5-238d-74ce-a463-e9245ed598ae_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_019f14d5-238d-74ce-a463-e9245ed598ae" xlink:to="loc_srt_RangeMember_019f14d5-238d-74ce-a463-e9245ed598ae_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_019f14d5-238d-75a0-933a-ab00c4212f59" 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_019f14d5-238d-74ce-a463-e9245ed598ae" xlink:to="loc_srt_RangeMember_019f14d5-238d-75a0-933a-ab00c4212f59" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember_019f14d5-238d-7edb-9add-99178deac8a7" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_MinimumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_019f14d5-238d-75a0-933a-ab00c4212f59" xlink:to="loc_srt_MinimumMember_019f14d5-238d-7edb-9add-99178deac8a7" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_rcl_CruiseShipsOnOrderAxis_019f14d5-238d-796f-a22c-7de7f9bbb7b8" xlink:href="rcl-20260630.xsd#rcl_CruiseShipsOnOrderAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_UnrecordedUnconditionalPurchaseObligationTable_019f14d5-238d-7509-b7a3-a31ee5dc2edc" xlink:to="loc_rcl_CruiseShipsOnOrderAxis_019f14d5-238d-796f-a22c-7de7f9bbb7b8" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_rcl_CruiseShipsOnOrderDomain_019f14d5-238d-796f-a22c-7de7f9bbb7b8_default" xlink:href="rcl-20260630.xsd#rcl_CruiseShipsOnOrderDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_rcl_CruiseShipsOnOrderAxis_019f14d5-238d-796f-a22c-7de7f9bbb7b8" xlink:to="loc_rcl_CruiseShipsOnOrderDomain_019f14d5-238d-796f-a22c-7de7f9bbb7b8_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_rcl_CruiseShipsOnOrderDomain_019f14d5-238d-7336-891e-037694338e13" xlink:href="rcl-20260630.xsd#rcl_CruiseShipsOnOrderDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_rcl_CruiseShipsOnOrderAxis_019f14d5-238d-796f-a22c-7de7f9bbb7b8" xlink:to="loc_rcl_CruiseShipsOnOrderDomain_019f14d5-238d-7336-891e-037694338e13" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_rcl_RiverClassShipsMember_019f14d5-238d-73c9-bcfa-00dad3c31587" xlink:href="rcl-20260630.xsd#rcl_RiverClassShipsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_rcl_CruiseShipsOnOrderDomain_019f14d5-238d-7336-891e-037694338e13" xlink:to="loc_rcl_RiverClassShipsMember_019f14d5-238d-73c9-bcfa-00dad3c31587" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_rcl_DiscoveryClassShipsMember_019f14d5-238d-7777-af2b-f8f8a31f60d4" xlink:href="rcl-20260630.xsd#rcl_DiscoveryClassShipsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_rcl_CruiseShipsOnOrderDomain_019f14d5-238d-7336-891e-037694338e13" xlink:to="loc_rcl_DiscoveryClassShipsMember_019f14d5-238d-7777-af2b-f8f8a31f60d4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_rcl_IconClassUnnamedShipMember_019f14d5-238d-7e3c-9fac-9daa969e286c" xlink:href="rcl-20260630.xsd#rcl_IconClassUnnamedShipMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_rcl_CruiseShipsOnOrderDomain_019f14d5-238d-7336-891e-037694338e13" xlink:to="loc_rcl_IconClassUnnamedShipMember_019f14d5-238d-7e3c-9fac-9daa969e286c" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_rcl_IconClassUnnamedShipTwoMember_019f8030-d1f8-7976-93a4-66410be4b79b" xlink:href="rcl-20260630.xsd#rcl_IconClassUnnamedShipTwoMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_rcl_CruiseShipsOnOrderDomain_019f14d5-238d-7336-891e-037694338e13" xlink:to="loc_rcl_IconClassUnnamedShipTwoMember_019f8030-d1f8-7976-93a4-66410be4b79b" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_019f14d5-238d-7758-86c8-eec6b60b4a9d" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_UnrecordedUnconditionalPurchaseObligationTable_019f14d5-238d-7509-b7a3-a31ee5dc2edc" xlink:to="loc_dei_LegalEntityAxis_019f14d5-238d-7758-86c8-eec6b60b4a9d" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_019f14d5-238d-7758-86c8-eec6b60b4a9d_default" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_019f14d5-238d-7758-86c8-eec6b60b4a9d" xlink:to="loc_dei_EntityDomain_019f14d5-238d-7758-86c8-eec6b60b4a9d_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_019f14d5-238d-7e9b-859f-0c7c7ab6c5d0" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_019f14d5-238d-7758-86c8-eec6b60b4a9d" xlink:to="loc_dei_EntityDomain_019f14d5-238d-7e9b-859f-0c7c7ab6c5d0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_rcl_CelebrityCruiseShipsMember_019f14d5-238e-7922-b7f8-ab0961eb56df" xlink:href="rcl-20260630.xsd#rcl_CelebrityCruiseShipsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_019f14d5-238d-7e9b-859f-0c7c7ab6c5d0" xlink:to="loc_rcl_CelebrityCruiseShipsMember_019f14d5-238e-7922-b7f8-ab0961eb56df" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_rcl_RoyalCaribbeanMember_019f14d5-238e-73fe-be32-63a3a16c1c83" xlink:href="rcl-20260630.xsd#rcl_RoyalCaribbeanMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_019f14d5-238d-7e9b-859f-0c7c7ab6c5d0" xlink:to="loc_rcl_RoyalCaribbeanMember_019f14d5-238e-73fe-be32-63a3a16c1c83" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_rcl_FinnveraPLC.Member_019f14d5-238e-769c-b932-c92b3e20d9e0" xlink:href="rcl-20260630.xsd#rcl_FinnveraPLC.Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_019f14d5-238d-7e9b-859f-0c7c7ab6c5d0" xlink:to="loc_rcl_FinnveraPLC.Member_019f14d5-238e-769c-b932-c92b3e20d9e0" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_rcl_BpiFranceMember_019f14d5-238e-74c4-a2d8-2586f87346fc" xlink:href="rcl-20260630.xsd#rcl_BpiFranceMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_019f14d5-238d-7e9b-859f-0c7c7ab6c5d0" xlink:to="loc_rcl_BpiFranceMember_019f14d5-238e-74c4-a2d8-2586f87346fc" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UnrecordedUnconditionalPurchaseObligationByCategoryOfItemPurchasedAxis_019f14d5-238e-7ca6-9fdd-b3f2a59c2645" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_UnrecordedUnconditionalPurchaseObligationByCategoryOfItemPurchasedAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_UnrecordedUnconditionalPurchaseObligationTable_019f14d5-238d-7509-b7a3-a31ee5dc2edc" xlink:to="loc_us-gaap_UnrecordedUnconditionalPurchaseObligationByCategoryOfItemPurchasedAxis_019f14d5-238e-7ca6-9fdd-b3f2a59c2645" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UnconditionalPurchaseObligationCategoryOfGoodsOrServicesAcquiredDomain_019f14d5-238e-7ca6-9fdd-b3f2a59c2645_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_UnconditionalPurchaseObligationCategoryOfGoodsOrServicesAcquiredDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_UnrecordedUnconditionalPurchaseObligationByCategoryOfItemPurchasedAxis_019f14d5-238e-7ca6-9fdd-b3f2a59c2645" xlink:to="loc_us-gaap_UnconditionalPurchaseObligationCategoryOfGoodsOrServicesAcquiredDomain_019f14d5-238e-7ca6-9fdd-b3f2a59c2645_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UnconditionalPurchaseObligationCategoryOfGoodsOrServicesAcquiredDomain_019f14d5-238e-70f6-b490-01b0a42597ba" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_UnconditionalPurchaseObligationCategoryOfGoodsOrServicesAcquiredDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_UnrecordedUnconditionalPurchaseObligationByCategoryOfItemPurchasedAxis_019f14d5-238e-7ca6-9fdd-b3f2a59c2645" xlink:to="loc_us-gaap_UnconditionalPurchaseObligationCategoryOfGoodsOrServicesAcquiredDomain_019f14d5-238e-70f6-b490-01b0a42597ba" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CapitalAdditionsMember_019f14d5-238e-7509-90da-2dec6f061910" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CapitalAdditionsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UnconditionalPurchaseObligationCategoryOfGoodsOrServicesAcquiredDomain_019f14d5-238e-70f6-b490-01b0a42597ba" xlink:to="loc_us-gaap_CapitalAdditionsMember_019f14d5-238e-7509-90da-2dec6f061910" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_019f14d5-238e-7832-8cdf-511fcff69000" 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_UnrecordedUnconditionalPurchaseObligationTable_019f14d5-238d-7509-b7a3-a31ee5dc2edc" xlink:to="loc_us-gaap_LongtermDebtTypeAxis_019f14d5-238e-7832-8cdf-511fcff69000" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_019f14d5-238e-7832-8cdf-511fcff69000_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_019f14d5-238e-7832-8cdf-511fcff69000" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_019f14d5-238e-7832-8cdf-511fcff69000_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_019f14d5-238e-7c06-9465-95860371338d" 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_019f14d5-238e-7832-8cdf-511fcff69000" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_019f14d5-238e-7c06-9465-95860371338d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UnsecuredDebtMember_019f14d5-238e-77ee-90a6-d287f02d87dd" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_UnsecuredDebtMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_019f14d5-238e-7c06-9465-95860371338d" xlink:to="loc_us-gaap_UnsecuredDebtMember_019f14d5-238e-77ee-90a6-d287f02d87dd" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeAxis_019f8031-5d1a-7d12-a043-c002077e5278" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SubsequentEventTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_UnrecordedUnconditionalPurchaseObligationTable_019f14d5-238d-7509-b7a3-a31ee5dc2edc" xlink:to="loc_us-gaap_SubsequentEventTypeAxis_019f8031-5d1a-7d12-a043-c002077e5278" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeDomain_019f8031-5d1a-7d12-a043-c002077e5278_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SubsequentEventTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_SubsequentEventTypeAxis_019f8031-5d1a-7d12-a043-c002077e5278" xlink:to="loc_us-gaap_SubsequentEventTypeDomain_019f8031-5d1a-7d12-a043-c002077e5278_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeDomain_019f8031-5d1a-7e40-a50c-426418605c47" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SubsequentEventTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_SubsequentEventTypeAxis_019f8031-5d1a-7d12-a043-c002077e5278" xlink:to="loc_us-gaap_SubsequentEventTypeDomain_019f8031-5d1a-7e40-a50c-426418605c47" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventMember_019f8031-7206-7269-8bfb-4cc1197a139b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SubsequentEventMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsequentEventTypeDomain_019f8031-5d1a-7e40-a50c-426418605c47" xlink:to="loc_us-gaap_SubsequentEventMember_019f8031-7206-7269-8bfb-4cc1197a139b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_rcl_NumberOfShipsUnderConstruction_019f14d5-238e-7305-88e3-f3ef5392d697" xlink:href="rcl-20260630.xsd#rcl_NumberOfShipsUnderConstruction"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UnrecordedUnconditionalPurchaseObligationLineItems_019f14d5-238e-7120-970d-0347b642f6c1" xlink:to="loc_rcl_NumberOfShipsUnderConstruction_019f14d5-238e-7305-88e3-f3ef5392d697" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_rcl_NumberOfShipsSlotReservationAgreement_019f14d5-238e-77b3-8e5f-09bd2e2fb39f" xlink:href="rcl-20260630.xsd#rcl_NumberOfShipsSlotReservationAgreement"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UnrecordedUnconditionalPurchaseObligationLineItems_019f14d5-238e-7120-970d-0347b642f6c1" xlink:to="loc_rcl_NumberOfShipsSlotReservationAgreement_019f14d5-238e-77b3-8e5f-09bd2e2fb39f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_rcl_NumberOfShipsExpectedTotalFleet_019f14d5-238e-7d3a-bd68-b02594ad39b8" xlink:href="rcl-20260630.xsd#rcl_NumberOfShipsExpectedTotalFleet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UnrecordedUnconditionalPurchaseObligationLineItems_019f14d5-238e-7120-970d-0347b642f6c1" xlink:to="loc_rcl_NumberOfShipsExpectedTotalFleet_019f14d5-238e-7d3a-bd68-b02594ad39b8" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_rcl_DebtInstrumentPercentageGuaranteed_019f14d5-238e-70d7-88ec-975d335e08a7" xlink:href="rcl-20260630.xsd#rcl_DebtInstrumentPercentageGuaranteed"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UnrecordedUnconditionalPurchaseObligationLineItems_019f14d5-238e-7120-970d-0347b642f6c1" xlink:to="loc_rcl_DebtInstrumentPercentageGuaranteed_019f14d5-238e-70d7-88ec-975d335e08a7" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_rcl_PercentageOfBankCommittedFinancing_019f14d5-238e-791d-a06e-eae5457e5595" xlink:href="rcl-20260630.xsd#rcl_PercentageOfBankCommittedFinancing"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UnrecordedUnconditionalPurchaseObligationLineItems_019f14d5-238e-7120-970d-0347b642f6c1" xlink:to="loc_rcl_PercentageOfBankCommittedFinancing_019f14d5-238e-791d-a06e-eae5457e5595" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_rcl_UnsecuredTermLoanMaximumBorrowingCommitmentPerShip_019f14d5-238e-7be3-bba3-b13e54b1ec11" xlink:href="rcl-20260630.xsd#rcl_UnsecuredTermLoanMaximumBorrowingCommitmentPerShip"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UnrecordedUnconditionalPurchaseObligationLineItems_019f14d5-238e-7120-970d-0347b642f6c1" xlink:to="loc_rcl_UnsecuredTermLoanMaximumBorrowingCommitmentPerShip_019f14d5-238e-7be3-bba3-b13e54b1ec11" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentTerm_019f14d5-238e-746a-94f0-4dabb478187f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentTerm"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UnrecordedUnconditionalPurchaseObligationLineItems_019f14d5-238e-7120-970d-0347b642f6c1" xlink:to="loc_us-gaap_DebtInstrumentTerm_019f14d5-238e-746a-94f0-4dabb478187f" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_019f14d5-238e-7f3f-9529-49e6c44ed791" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentBasisSpreadOnVariableRate1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UnrecordedUnconditionalPurchaseObligationLineItems_019f14d5-238e-7120-970d-0347b642f6c1" xlink:to="loc_us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_019f14d5-238e-7f3f-9529-49e6c44ed791" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_rcl_ShipPassengerCapacityBerths_019f14d5-238e-7551-bee7-3e19e4be10f8" xlink:href="rcl-20260630.xsd#rcl_ShipPassengerCapacityBerths"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UnrecordedUnconditionalPurchaseObligationLineItems_019f14d5-238e-7120-970d-0347b642f6c1" xlink:to="loc_rcl_ShipPassengerCapacityBerths_019f14d5-238e-7551-bee7-3e19e4be10f8" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_rcl_DebtInstrumentNumberOfCreditAgreements_019f14d5-238e-7ed9-a522-9037a5db45b3" xlink:href="rcl-20260630.xsd#rcl_DebtInstrumentNumberOfCreditAgreements"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UnrecordedUnconditionalPurchaseObligationLineItems_019f14d5-238e-7120-970d-0347b642f6c1" xlink:to="loc_rcl_DebtInstrumentNumberOfCreditAgreements_019f14d5-238e-7ed9-a522-9037a5db45b3" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermPurchaseCommitmentAmount_019f14d5-238e-7c42-ac4e-9e562bf82627" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongTermPurchaseCommitmentAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UnrecordedUnconditionalPurchaseObligationLineItems_019f14d5-238e-7120-970d-0347b642f6c1" xlink:to="loc_us-gaap_LongTermPurchaseCommitmentAmount_019f14d5-238e-7c42-ac4e-9e562bf82627" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_rcl_PurchaseContractDeposit_019f14d5-238e-7dd8-8bc0-2f776c71d6fe" xlink:href="rcl-20260630.xsd#rcl_PurchaseContractDeposit"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UnrecordedUnconditionalPurchaseObligationLineItems_019f14d5-238e-7120-970d-0347b642f6c1" xlink:to="loc_rcl_PurchaseContractDeposit_019f14d5-238e-7dd8-8bc0-2f776c71d6fe" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LossContingencyDamagesAwardedValue_019f14d5-238e-76c1-8108-13abcab993c8" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LossContingencyDamagesAwardedValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UnrecordedUnconditionalPurchaseObligationLineItems_019f14d5-238e-7120-970d-0347b642f6c1" xlink:to="loc_us-gaap_LossContingencyDamagesAwardedValue_019f14d5-238e-76c1-8108-13abcab993c8" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LossContingencyLossInPeriod_019f14d5-238e-7229-9c68-1056c4f12847" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LossContingencyLossInPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UnrecordedUnconditionalPurchaseObligationLineItems_019f14d5-238e-7120-970d-0347b642f6c1" xlink:to="loc_us-gaap_LossContingencyLossInPeriod_019f14d5-238e-7229-9c68-1056c4f12847" xlink:type="arc" order="13"/>
    <link:loc xlink:type="locator" xlink:label="loc_rcl_DebtInstrumentCovenantChangeOfControlPercentageOfAcquiredOwnershipByAnyPerson_019f14d5-238e-77a1-ba4b-7cd9e4053d10" xlink:href="rcl-20260630.xsd#rcl_DebtInstrumentCovenantChangeOfControlPercentageOfAcquiredOwnershipByAnyPerson"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UnrecordedUnconditionalPurchaseObligationLineItems_019f14d5-238e-7120-970d-0347b642f6c1" xlink:to="loc_rcl_DebtInstrumentCovenantChangeOfControlPercentageOfAcquiredOwnershipByAnyPerson_019f14d5-238e-77a1-ba4b-7cd9e4053d10" xlink:type="arc" order="14"/>
    <link:loc xlink:type="locator" xlink:label="loc_rcl_NumberOfMonthsConsideredToDetermineRequirementOfPrepaymentOfDebts_019f14d5-238e-7b22-a82d-a94e6f2df546" xlink:href="rcl-20260630.xsd#rcl_NumberOfMonthsConsideredToDetermineRequirementOfPrepaymentOfDebts"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UnrecordedUnconditionalPurchaseObligationLineItems_019f14d5-238e-7120-970d-0347b642f6c1" xlink:to="loc_rcl_NumberOfMonthsConsideredToDetermineRequirementOfPrepaymentOfDebts_019f14d5-238e-7b22-a82d-a94e6f2df546" xlink:type="arc" order="15"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.royalcaribbean.com/role/ChangesinAccumulatedOtherComprehensiveLossScheduleofChangesinAccumulatedOtherComprehensiveLossbyComponentDetails" xlink:type="simple" xlink:href="rcl-20260630.xsd#ChangesinAccumulatedOtherComprehensiveLossScheduleofChangesinAccumulatedOtherComprehensiveLossbyComponentDetails"/>
  <link:definitionLink xlink:role="http://www.royalcaribbean.com/role/ChangesinAccumulatedOtherComprehensiveLossScheduleofChangesinAccumulatedOtherComprehensiveLossbyComponentDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems_019f14d5-238e-705e-ba79-09177ab13351" 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_019f14d5-238e-710f-9895-523b80856c33" 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_019f14d5-238e-705e-ba79-09177ab13351" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossTable_019f14d5-238e-710f-9895-523b80856c33" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementEquityComponentsAxis_019f14d5-238e-7e82-add0-65eadffa4cea" 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_019f14d5-238e-710f-9895-523b80856c33" xlink:to="loc_us-gaap_StatementEquityComponentsAxis_019f14d5-238e-7e82-add0-65eadffa4cea" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_019f14d5-238e-7e82-add0-65eadffa4cea_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_019f14d5-238e-7e82-add0-65eadffa4cea" xlink:to="loc_us-gaap_EquityComponentDomain_019f14d5-238e-7e82-add0-65eadffa4cea_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_019f14d5-238e-7f92-b1e3-1bd20f62c3f3" 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_019f14d5-238e-7e82-add0-65eadffa4cea" xlink:to="loc_us-gaap_EquityComponentDomain_019f14d5-238e-7f92-b1e3-1bd20f62c3f3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedGainLossNetCashFlowHedgeParentMember_019f14d5-238e-7759-aef4-b7c045d6348f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccumulatedGainLossNetCashFlowHedgeParentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_019f14d5-238e-7f92-b1e3-1bd20f62c3f3" xlink:to="loc_us-gaap_AccumulatedGainLossNetCashFlowHedgeParentMember_019f14d5-238e-7759-aef4-b7c045d6348f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember_019f14d5-238e-7f76-8681-f2f5a392422b" 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_019f14d5-238e-7f92-b1e3-1bd20f62c3f3" xlink:to="loc_us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember_019f14d5-238e-7f76-8681-f2f5a392422b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedTranslationAdjustmentMember_019f14d5-238e-794a-8093-c8e679f39833" 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_019f14d5-238e-7f92-b1e3-1bd20f62c3f3" xlink:to="loc_us-gaap_AccumulatedTranslationAdjustmentMember_019f14d5-238e-794a-8093-c8e679f39833" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_019f14d5-238e-7c9b-9694-95e73e0e8afc" 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_019f14d5-238e-7f92-b1e3-1bd20f62c3f3" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_019f14d5-238e-7c9b-9694-95e73e0e8afc" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_rcl_AccumulatedOtherComprehensiveIncomeLossRollForward_019f14d5-238e-73ff-adbd-148a15e7a457" xlink:href="rcl-20260630.xsd#rcl_AccumulatedOtherComprehensiveIncomeLossRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems_019f14d5-238e-705e-ba79-09177ab13351" xlink:to="loc_rcl_AccumulatedOtherComprehensiveIncomeLossRollForward_019f14d5-238e-73ff-adbd-148a15e7a457" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquity_019f14d5-238e-71c9-8cc4-8ba74847da95" 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_rcl_AccumulatedOtherComprehensiveIncomeLossRollForward_019f14d5-238e-73ff-adbd-148a15e7a457" xlink:to="loc_us-gaap_StockholdersEquity_019f14d5-238e-71c9-8cc4-8ba74847da95" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OciBeforeReclassificationsNetOfTaxAttributableToParent_019f14d5-238e-755e-9f0c-eb307249f8af" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OciBeforeReclassificationsNetOfTaxAttributableToParent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_rcl_AccumulatedOtherComprehensiveIncomeLossRollForward_019f14d5-238e-73ff-adbd-148a15e7a457" xlink:to="loc_us-gaap_OciBeforeReclassificationsNetOfTaxAttributableToParent_019f14d5-238e-755e-9f0c-eb307249f8af" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent_019f14d5-238e-748c-909f-b0e1d5aabc52" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_rcl_AccumulatedOtherComprehensiveIncomeLossRollForward_019f14d5-238e-73ff-adbd-148a15e7a457" xlink:to="loc_us-gaap_ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent_019f14d5-238e-748c-909f-b0e1d5aabc52" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent_019f14d5-238e-77ee-9efa-02b8f437f5ce" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_rcl_AccumulatedOtherComprehensiveIncomeLossRollForward_019f14d5-238e-73ff-adbd-148a15e7a457" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent_019f14d5-238e-77ee-9efa-02b8f437f5ce" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquity_019f14d5-238e-7f76-b3ce-4884d1cd515e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockholdersEquity"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.royalcaribbean.com/role/ChangesinAccumulatedOtherComprehensiveLossScheduleofReclassificationsOutofAccumulatedOtherComprehensiveLossDetails" xlink:type="simple" xlink:href="rcl-20260630.xsd#ChangesinAccumulatedOtherComprehensiveLossScheduleofReclassificationsOutofAccumulatedOtherComprehensiveLossDetails"/>
  <link:definitionLink xlink:role="http://www.royalcaribbean.com/role/ChangesinAccumulatedOtherComprehensiveLossScheduleofReclassificationsOutofAccumulatedOtherComprehensiveLossDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReclassificationAdjustmentOutOfAccumulatedOtherComprehensiveIncomeLineItems_019f14d5-238e-7c6a-a457-7328275840c1" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ReclassificationAdjustmentOutOfAccumulatedOtherComprehensiveIncomeLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeTable_019f14d5-238e-73df-8fba-818b016d0751" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ReclassificationAdjustmentOutOfAccumulatedOtherComprehensiveIncomeLineItems_019f14d5-238e-7c6a-a457-7328275840c1" xlink:to="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeTable_019f14d5-238e-73df-8fba-818b016d0751" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentRiskAxis_019f14d5-238e-7d10-9ddf-2998f54d5889" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeInstrumentRiskAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeTable_019f14d5-238e-73df-8fba-818b016d0751" xlink:to="loc_us-gaap_DerivativeInstrumentRiskAxis_019f14d5-238e-7d10-9ddf-2998f54d5889" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_019f14d5-238e-7d10-9ddf-2998f54d5889_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_019f14d5-238e-7d10-9ddf-2998f54d5889" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_019f14d5-238e-7d10-9ddf-2998f54d5889_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_019f14d5-238e-71c8-bfd5-c14692e27140" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_019f14d5-238e-7d10-9ddf-2998f54d5889" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_019f14d5-238e-71c8-bfd5-c14692e27140" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestRateSwapMember_019f14d5-238e-7dfc-8670-e99ef2cdde25" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InterestRateSwapMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_019f14d5-238e-71c8-bfd5-c14692e27140" xlink:to="loc_us-gaap_InterestRateSwapMember_019f14d5-238e-7dfc-8670-e99ef2cdde25" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ForeignExchangeForwardMember_019f14d5-238e-7b61-b1ef-ae805023ad05" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ForeignExchangeForwardMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_019f14d5-238e-71c8-bfd5-c14692e27140" xlink:to="loc_us-gaap_ForeignExchangeForwardMember_019f14d5-238e-7b61-b1ef-ae805023ad05" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommodityContractMember_019f14d5-238e-7232-96f6-1cfb000c23a6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommodityContractMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_019f14d5-238e-71c8-bfd5-c14692e27140" xlink:to="loc_us-gaap_CommodityContractMember_019f14d5-238e-7232-96f6-1cfb000c23a6" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis_019f14d5-238e-7fc2-9d48-3c7de5ff58c4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeTable_019f14d5-238e-73df-8fba-818b016d0751" xlink:to="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis_019f14d5-238e-7fc2-9d48-3c7de5ff58c4" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeDomain_019f14d5-238e-7fc2-9d48-3c7de5ff58c4_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis_019f14d5-238e-7fc2-9d48-3c7de5ff58c4" xlink:to="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeDomain_019f14d5-238e-7fc2-9d48-3c7de5ff58c4_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeDomain_019f14d5-238e-7060-8c7f-4c0035b248f7" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis_019f14d5-238e-7fc2-9d48-3c7de5ff58c4" xlink:to="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeDomain_019f14d5-238e-7060-8c7f-4c0035b248f7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember_019f14d5-238e-7ddd-a155-9e891d640946" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeDomain_019f14d5-238e-7060-8c7f-4c0035b248f7" xlink:to="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember_019f14d5-238e-7ddd-a155-9e891d640946" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementEquityComponentsAxis_019f14d5-238e-7809-aacf-47e4449e844b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementEquityComponentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeTable_019f14d5-238e-73df-8fba-818b016d0751" xlink:to="loc_us-gaap_StatementEquityComponentsAxis_019f14d5-238e-7809-aacf-47e4449e844b" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_019f14d5-238e-7809-aacf-47e4449e844b_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_019f14d5-238e-7809-aacf-47e4449e844b" xlink:to="loc_us-gaap_EquityComponentDomain_019f14d5-238e-7809-aacf-47e4449e844b_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_019f14d5-238e-7595-ad96-c926a5b99b1c" 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_019f14d5-238e-7809-aacf-47e4449e844b" xlink:to="loc_us-gaap_EquityComponentDomain_019f14d5-238e-7595-ad96-c926a5b99b1c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedGainLossNetCashFlowHedgeParentMember_019f14d5-238e-7c16-b9ee-af0571e75113" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccumulatedGainLossNetCashFlowHedgeParentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_019f14d5-238e-7595-ad96-c926a5b99b1c" xlink:to="loc_us-gaap_AccumulatedGainLossNetCashFlowHedgeParentMember_019f14d5-238e-7c16-b9ee-af0571e75113" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestExpenseNonoperating_019f14d5-238e-71d9-9cfc-38d022ff62f2" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InterestExpenseNonoperating"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReclassificationAdjustmentOutOfAccumulatedOtherComprehensiveIncomeLineItems_019f14d5-238e-7c6a-a457-7328275840c1" xlink:to="loc_us-gaap_InterestExpenseNonoperating_019f14d5-238e-71d9-9cfc-38d022ff62f2" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DepreciationAndAmortization_019f14d5-238e-7833-9fd6-a6cb01645d12" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DepreciationAndAmortization"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReclassificationAdjustmentOutOfAccumulatedOtherComprehensiveIncomeLineItems_019f14d5-238e-7c6a-a457-7328275840c1" xlink:to="loc_us-gaap_DepreciationAndAmortization_019f14d5-238e-7833-9fd6-a6cb01645d12" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FuelCosts_019f14d5-238e-7e9d-847c-1905c87cc413" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FuelCosts"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReclassificationAdjustmentOutOfAccumulatedOtherComprehensiveIncomeLineItems_019f14d5-238e-7c6a-a457-7328275840c1" xlink:to="loc_us-gaap_FuelCosts_019f14d5-238e-7e9d-847c-1905c87cc413" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_019f14d5-238e-70a8-978a-656d439604ac" 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_ReclassificationAdjustmentOutOfAccumulatedOtherComprehensiveIncomeLineItems_019f14d5-238e-7c6a-a457-7328275840c1" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_019f14d5-238e-70a8-978a-656d439604ac" xlink:type="arc" order="3"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.royalcaribbean.com/role/FairValueMeasurementsandDerivativeInstrumentsScheduleofEstimatedFairValueofFinancialInstrumentsNotMeasuredatFairValueonRecurringBasisDetails" xlink:type="simple" xlink:href="rcl-20260630.xsd#FairValueMeasurementsandDerivativeInstrumentsScheduleofEstimatedFairValueofFinancialInstrumentsNotMeasuredatFairValueonRecurringBasisDetails"/>
  <link:definitionLink xlink:role="http://www.royalcaribbean.com/role/FairValueMeasurementsandDerivativeInstrumentsScheduleofEstimatedFairValueofFinancialInstrumentsNotMeasuredatFairValueonRecurringBasisDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_019f14d5-238e-7f58-8481-064a43f2e627" 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_019f14d5-238e-7bb7-a274-62f0c2ac4e5d" 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_019f14d5-238e-7f58-8481-064a43f2e627" xlink:to="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_019f14d5-238e-7bb7-a274-62f0c2ac4e5d" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByMeasurementBasisAxis_019f14d5-238e-7045-bbff-4618012902fd" 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_019f14d5-238e-7bb7-a274-62f0c2ac4e5d" xlink:to="loc_us-gaap_FairValueByMeasurementBasisAxis_019f14d5-238e-7045-bbff-4618012902fd" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_019f14d5-238e-7045-bbff-4618012902fd_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_019f14d5-238e-7045-bbff-4618012902fd" xlink:to="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_019f14d5-238e-7045-bbff-4618012902fd_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueDisclosureItemAmountsDomain_019f14d5-238e-758e-833b-448c20c72f75" 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_019f14d5-238e-7045-bbff-4618012902fd" xlink:to="loc_us-gaap_FairValueDisclosureItemAmountsDomain_019f14d5-238e-758e-833b-448c20c72f75" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_019f14d5-238e-7d15-9f05-af45f5033468" 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_019f14d5-238e-758e-833b-448c20c72f75" xlink:to="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_019f14d5-238e-7d15-9f05-af45f5033468" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CarryingReportedAmountFairValueDisclosureMember_019f14d5-238e-7ec9-a10a-d4b6bfee129e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CarryingReportedAmountFairValueDisclosureMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_019f14d5-238e-7d15-9f05-af45f5033468" xlink:to="loc_us-gaap_CarryingReportedAmountFairValueDisclosureMember_019f14d5-238e-7ec9-a10a-d4b6bfee129e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EstimateOfFairValueFairValueDisclosureMember_019f14d5-238e-7923-a914-9ec7ac91bf02" 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_019f14d5-238e-7d15-9f05-af45f5033468" xlink:to="loc_us-gaap_EstimateOfFairValueFairValueDisclosureMember_019f14d5-238e-7923-a914-9ec7ac91bf02" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByMeasurementFrequencyAxis_019f14d5-238e-7d55-a39e-45c17b6aee3e" 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_019f14d5-238e-7bb7-a274-62f0c2ac4e5d" xlink:to="loc_us-gaap_FairValueByMeasurementFrequencyAxis_019f14d5-238e-7d55-a39e-45c17b6aee3e" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementFrequencyDomain_019f14d5-238e-7d55-a39e-45c17b6aee3e_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_019f14d5-238e-7d55-a39e-45c17b6aee3e" xlink:to="loc_us-gaap_FairValueMeasurementFrequencyDomain_019f14d5-238e-7d55-a39e-45c17b6aee3e_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementFrequencyDomain_019f14d5-238e-76a4-8990-fca31e159545" 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_019f14d5-238e-7d55-a39e-45c17b6aee3e" xlink:to="loc_us-gaap_FairValueMeasurementFrequencyDomain_019f14d5-238e-76a4-8990-fca31e159545" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsNonrecurringMember_019f14d5-238e-732b-a029-cc5173bb8e8d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueMeasurementsNonrecurringMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementFrequencyDomain_019f14d5-238e-76a4-8990-fca31e159545" xlink:to="loc_us-gaap_FairValueMeasurementsNonrecurringMember_019f14d5-238e-732b-a029-cc5173bb8e8d" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_019f14d5-238e-747c-8277-3be7850ed8ad" 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_019f14d5-238e-7bb7-a274-62f0c2ac4e5d" xlink:to="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_019f14d5-238e-747c-8277-3be7850ed8ad" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_019f14d5-238e-747c-8277-3be7850ed8ad_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_019f14d5-238e-747c-8277-3be7850ed8ad" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_019f14d5-238e-747c-8277-3be7850ed8ad_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_019f14d5-238e-7403-b050-4421bfa3a538" 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_019f14d5-238e-747c-8277-3be7850ed8ad" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_019f14d5-238e-7403-b050-4421bfa3a538" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel1Member_019f14d5-238e-7043-aa9f-c8c9281cdf97" 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_019f14d5-238e-7403-b050-4421bfa3a538" xlink:to="loc_us-gaap_FairValueInputsLevel1Member_019f14d5-238e-7043-aa9f-c8c9281cdf97" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel2Member_019f14d5-238e-783c-b3b8-e535b6dda764" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueInputsLevel2Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_019f14d5-238e-7403-b050-4421bfa3a538" xlink:to="loc_us-gaap_FairValueInputsLevel2Member_019f14d5-238e-783c-b3b8-e535b6dda764" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel3Member_019f14d5-238e-734e-b17f-82a5325abd93" 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_019f14d5-238e-7403-b050-4421bfa3a538" xlink:to="loc_us-gaap_FairValueInputsLevel3Member_019f14d5-238e-734e-b17f-82a5325abd93" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsFairValueDisclosureAbstract_019f14d5-238e-7147-8511-ed5aab4ae38e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AssetsFairValueDisclosureAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_019f14d5-238e-7f58-8481-064a43f2e627" xlink:to="loc_us-gaap_AssetsFairValueDisclosureAbstract_019f14d5-238e-7147-8511-ed5aab4ae38e" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashAndCashEquivalentsFairValueDisclosure_019f14d5-238e-7b98-a53e-a407c035e32a" 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_AssetsFairValueDisclosureAbstract_019f14d5-238e-7147-8511-ed5aab4ae38e" xlink:to="loc_us-gaap_CashAndCashEquivalentsFairValueDisclosure_019f14d5-238e-7b98-a53e-a407c035e32a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsFairValueDisclosure_019f14d5-238e-76a4-964a-c036a8188a68" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AssetsFairValueDisclosure"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsFairValueDisclosureAbstract_019f14d5-238e-7147-8511-ed5aab4ae38e" xlink:to="loc_us-gaap_AssetsFairValueDisclosure_019f14d5-238e-76a4-964a-c036a8188a68" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesFairValueDisclosureAbstract_019f14d5-238e-7260-851e-3c84c1f854e1" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LiabilitiesFairValueDisclosureAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_019f14d5-238e-7f58-8481-064a43f2e627" xlink:to="loc_us-gaap_LiabilitiesFairValueDisclosureAbstract_019f14d5-238e-7260-851e-3c84c1f854e1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentFairValue_019f14d5-238e-71ee-8bf0-0c624d05211c" 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_LiabilitiesFairValueDisclosureAbstract_019f14d5-238e-7260-851e-3c84c1f854e1" xlink:to="loc_us-gaap_DebtInstrumentFairValue_019f14d5-238e-71ee-8bf0-0c624d05211c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesFairValueDisclosure_019f14d5-238e-7e9a-a650-96783c3cf2c7" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LiabilitiesFairValueDisclosure"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesFairValueDisclosureAbstract_019f14d5-238e-7260-851e-3c84c1f854e1" xlink:to="loc_us-gaap_LiabilitiesFairValueDisclosure_019f14d5-238e-7e9a-a650-96783c3cf2c7" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.royalcaribbean.com/role/FairValueMeasurementsandDerivativeInstrumentsScheduleofAssetsandLiabilitiesRecordedatFairValueonRecurringBasisDetails" xlink:type="simple" xlink:href="rcl-20260630.xsd#FairValueMeasurementsandDerivativeInstrumentsScheduleofAssetsandLiabilitiesRecordedatFairValueonRecurringBasisDetails"/>
  <link:definitionLink xlink:role="http://www.royalcaribbean.com/role/FairValueMeasurementsandDerivativeInstrumentsScheduleofAssetsandLiabilitiesRecordedatFairValueonRecurringBasisDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_019f14d5-238e-709a-a659-596c46956a2c" 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_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable_019f14d5-238e-7d9f-bb87-61d1bc651775" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_019f14d5-238e-709a-a659-596c46956a2c" xlink:to="loc_us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable_019f14d5-238e-7d9f-bb87-61d1bc651775" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByMeasurementBasisAxis_019f14d5-238e-7083-b1d3-ebccb2458f31" 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_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable_019f14d5-238e-7d9f-bb87-61d1bc651775" xlink:to="loc_us-gaap_FairValueByMeasurementBasisAxis_019f14d5-238e-7083-b1d3-ebccb2458f31" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_019f14d5-238e-7083-b1d3-ebccb2458f31_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_019f14d5-238e-7083-b1d3-ebccb2458f31" xlink:to="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_019f14d5-238e-7083-b1d3-ebccb2458f31_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueDisclosureItemAmountsDomain_019f14d5-238e-7477-8184-48ae034c5acc" 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_019f14d5-238e-7083-b1d3-ebccb2458f31" xlink:to="loc_us-gaap_FairValueDisclosureItemAmountsDomain_019f14d5-238e-7477-8184-48ae034c5acc" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_019f14d5-238e-7e96-adee-bdb81cb6d230" 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_019f14d5-238e-7477-8184-48ae034c5acc" xlink:to="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_019f14d5-238e-7e96-adee-bdb81cb6d230" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EstimateOfFairValueFairValueDisclosureMember_019f14d5-238e-79d1-b9c1-e0b421e992f1" 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_019f14d5-238e-7e96-adee-bdb81cb6d230" xlink:to="loc_us-gaap_EstimateOfFairValueFairValueDisclosureMember_019f14d5-238e-79d1-b9c1-e0b421e992f1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByMeasurementFrequencyAxis_019f14d5-238e-7ef6-a0f7-f7981cfc3cd3" 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_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable_019f14d5-238e-7d9f-bb87-61d1bc651775" xlink:to="loc_us-gaap_FairValueByMeasurementFrequencyAxis_019f14d5-238e-7ef6-a0f7-f7981cfc3cd3" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementFrequencyDomain_019f14d5-238e-7ef6-a0f7-f7981cfc3cd3_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_019f14d5-238e-7ef6-a0f7-f7981cfc3cd3" xlink:to="loc_us-gaap_FairValueMeasurementFrequencyDomain_019f14d5-238e-7ef6-a0f7-f7981cfc3cd3_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementFrequencyDomain_019f14d5-238e-786d-90b2-b43aa0ecafe2" 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_019f14d5-238e-7ef6-a0f7-f7981cfc3cd3" xlink:to="loc_us-gaap_FairValueMeasurementFrequencyDomain_019f14d5-238e-786d-90b2-b43aa0ecafe2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsRecurringMember_019f14d5-238e-786d-907c-7d6965172ee1" 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_019f14d5-238e-786d-90b2-b43aa0ecafe2" xlink:to="loc_us-gaap_FairValueMeasurementsRecurringMember_019f14d5-238e-786d-907c-7d6965172ee1" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_019f14d5-238e-7b97-9b52-94d62531e745" 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_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable_019f14d5-238e-7d9f-bb87-61d1bc651775" xlink:to="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_019f14d5-238e-7b97-9b52-94d62531e745" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_019f14d5-238e-7b97-9b52-94d62531e745_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_019f14d5-238e-7b97-9b52-94d62531e745" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_019f14d5-238e-7b97-9b52-94d62531e745_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_019f14d5-238e-7376-aabe-68d4c422aa80" 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_019f14d5-238e-7b97-9b52-94d62531e745" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_019f14d5-238e-7376-aabe-68d4c422aa80" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel1Member_019f14d5-238e-71da-8357-f6e07839af98" 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_019f14d5-238e-7376-aabe-68d4c422aa80" xlink:to="loc_us-gaap_FairValueInputsLevel1Member_019f14d5-238e-71da-8357-f6e07839af98" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel2Member_019f14d5-238e-72af-8663-51b51166bc91" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueInputsLevel2Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_019f14d5-238e-7376-aabe-68d4c422aa80" xlink:to="loc_us-gaap_FairValueInputsLevel2Member_019f14d5-238e-72af-8663-51b51166bc91" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel3Member_019f14d5-238e-7601-a279-ca738761650a" 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_019f14d5-238e-7376-aabe-68d4c422aa80" xlink:to="loc_us-gaap_FairValueInputsLevel3Member_019f14d5-238e-7601-a279-ca738761650a" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsFairValueDisclosureAbstract_019f14d5-238e-771e-abac-405fab03548e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AssetsFairValueDisclosureAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_019f14d5-238e-709a-a659-596c46956a2c" xlink:to="loc_us-gaap_AssetsFairValueDisclosureAbstract_019f14d5-238e-771e-abac-405fab03548e" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeAssets_019f14d5-238e-79ae-ba61-9374b6af140a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsFairValueDisclosureAbstract_019f14d5-238e-771e-abac-405fab03548e" xlink:to="loc_us-gaap_DerivativeAssets_019f14d5-238e-79ae-ba61-9374b6af140a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsFairValueDisclosure_019f14d5-238e-7458-ba8e-410fe7bc65e4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AssetsFairValueDisclosure"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsFairValueDisclosureAbstract_019f14d5-238e-771e-abac-405fab03548e" xlink:to="loc_us-gaap_AssetsFairValueDisclosure_019f14d5-238e-7458-ba8e-410fe7bc65e4" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesFairValueDisclosureAbstract_019f14d5-238e-7e7c-a8c3-19f7f63ba2bf" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LiabilitiesFairValueDisclosureAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_019f14d5-238e-709a-a659-596c46956a2c" xlink:to="loc_us-gaap_LiabilitiesFairValueDisclosureAbstract_019f14d5-238e-7e7c-a8c3-19f7f63ba2bf" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeLiabilities_019f14d5-238e-730d-88a0-6b5635c58d3a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesFairValueDisclosureAbstract_019f14d5-238e-7e7c-a8c3-19f7f63ba2bf" xlink:to="loc_us-gaap_DerivativeLiabilities_019f14d5-238e-730d-88a0-6b5635c58d3a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesFairValueDisclosure_019f14d5-238e-791e-a796-f1eb100b3fc6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LiabilitiesFairValueDisclosure"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesFairValueDisclosureAbstract_019f14d5-238e-7e7c-a8c3-19f7f63ba2bf" xlink:to="loc_us-gaap_LiabilitiesFairValueDisclosure_019f14d5-238e-791e-a796-f1eb100b3fc6" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.royalcaribbean.com/role/FairValueMeasurementsandDerivativeInstrumentsNarrativeDetails" xlink:type="simple" xlink:href="rcl-20260630.xsd#FairValueMeasurementsandDerivativeInstrumentsNarrativeDetails"/>
  <link:definitionLink xlink:role="http://www.royalcaribbean.com/role/FairValueMeasurementsandDerivativeInstrumentsNarrativeDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativesFairValueLineItems_019f14d5-2463-7b01-b0c8-9d1768d9506f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativesFairValueLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable_019f14d5-2463-7d7b-b125-97e9d0b234df" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DerivativesFairValueLineItems_019f14d5-2463-7b01-b0c8-9d1768d9506f" xlink:to="loc_us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable_019f14d5-2463-7d7b-b125-97e9d0b234df" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentRiskAxis_019f14d5-2463-783b-886e-7ec27e637e51" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeInstrumentRiskAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable_019f14d5-2463-7d7b-b125-97e9d0b234df" xlink:to="loc_us-gaap_DerivativeInstrumentRiskAxis_019f14d5-2463-783b-886e-7ec27e637e51" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_019f14d5-2463-783b-886e-7ec27e637e51_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_019f14d5-2463-783b-886e-7ec27e637e51" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_019f14d5-2463-783b-886e-7ec27e637e51_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_019f14d5-2463-79c0-a1cf-5fb060ec694c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_019f14d5-2463-783b-886e-7ec27e637e51" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_019f14d5-2463-79c0-a1cf-5fb060ec694c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestRateSwapMember_019f14d5-2463-7ebf-8b37-a790f071d190" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InterestRateSwapMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_019f14d5-2463-79c0-a1cf-5fb060ec694c" xlink:to="loc_us-gaap_InterestRateSwapMember_019f14d5-2463-7ebf-8b37-a790f071d190" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ForeignExchangeForwardMember_019f14d5-2463-7164-b48a-bec89f7b1c30" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ForeignExchangeForwardMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_019f14d5-2463-79c0-a1cf-5fb060ec694c" xlink:to="loc_us-gaap_ForeignExchangeForwardMember_019f14d5-2463-7164-b48a-bec89f7b1c30" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ForeignExchangeContractMember_019f14d5-2463-78a1-9946-c42262591917" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ForeignExchangeContractMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_019f14d5-2463-79c0-a1cf-5fb060ec694c" xlink:to="loc_us-gaap_ForeignExchangeContractMember_019f14d5-2463-78a1-9946-c42262591917" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommodityContractMember_019f14d5-2463-79a7-b929-0da9dff99f37" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommodityContractMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_019f14d5-2463-79c0-a1cf-5fb060ec694c" xlink:to="loc_us-gaap_CommodityContractMember_019f14d5-2463-79a7-b929-0da9dff99f37" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingDesignationAxis_019f14d5-2463-755a-92e3-27143ed4c4f0" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_HedgingDesignationAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable_019f14d5-2463-7d7b-b125-97e9d0b234df" xlink:to="loc_us-gaap_HedgingDesignationAxis_019f14d5-2463-755a-92e3-27143ed4c4f0" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingDesignationDomain_019f14d5-2463-755a-92e3-27143ed4c4f0_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_HedgingDesignationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_HedgingDesignationAxis_019f14d5-2463-755a-92e3-27143ed4c4f0" xlink:to="loc_us-gaap_HedgingDesignationDomain_019f14d5-2463-755a-92e3-27143ed4c4f0_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingDesignationDomain_019f14d5-2463-7156-ac62-04bde1959dc0" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_HedgingDesignationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_HedgingDesignationAxis_019f14d5-2463-755a-92e3-27143ed4c4f0" xlink:to="loc_us-gaap_HedgingDesignationDomain_019f14d5-2463-7156-ac62-04bde1959dc0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NondesignatedMember_019f14d5-2463-780f-9763-bdce34d7d064" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NondesignatedMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_HedgingDesignationDomain_019f14d5-2463-7156-ac62-04bde1959dc0" xlink:to="loc_us-gaap_NondesignatedMember_019f14d5-2463-780f-9763-bdce34d7d064" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_019f14d5-2463-76b3-b5c0-1687ffd6cc87" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable_019f14d5-2463-7d7b-b125-97e9d0b234df" xlink:to="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_019f14d5-2463-76b3-b5c0-1687ffd6cc87" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_EquityMethodInvesteeNameDomain_019f14d5-2463-76b3-b5c0-1687ffd6cc87_default" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_EquityMethodInvesteeNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_019f14d5-2463-76b3-b5c0-1687ffd6cc87" xlink:to="loc_srt_EquityMethodInvesteeNameDomain_019f14d5-2463-76b3-b5c0-1687ffd6cc87_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_EquityMethodInvesteeNameDomain_019f14d5-2463-7f71-a09c-640c1c19f73d" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_EquityMethodInvesteeNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_019f14d5-2463-76b3-b5c0-1687ffd6cc87" xlink:to="loc_srt_EquityMethodInvesteeNameDomain_019f14d5-2463-7f71-a09c-640c1c19f73d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_rcl_TUICruisesMember_019f14d5-2463-735c-af5c-d5d278b3154d" xlink:href="rcl-20260630.xsd#rcl_TUICruisesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_EquityMethodInvesteeNameDomain_019f14d5-2463-7f71-a09c-640c1c19f73d" xlink:to="loc_rcl_TUICruisesMember_019f14d5-2463-735c-af5c-d5d278b3154d" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis_019f14d5-2463-7309-94d2-a1e11f777c2f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable_019f14d5-2463-7d7b-b125-97e9d0b234df" xlink:to="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis_019f14d5-2463-7309-94d2-a1e11f777c2f" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingRelationshipDomain_019f14d5-2463-7309-94d2-a1e11f777c2f_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_HedgingRelationshipDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis_019f14d5-2463-7309-94d2-a1e11f777c2f" xlink:to="loc_us-gaap_HedgingRelationshipDomain_019f14d5-2463-7309-94d2-a1e11f777c2f_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingRelationshipDomain_019f14d5-2463-7bb2-b58f-2c55f02ba85c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_HedgingRelationshipDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis_019f14d5-2463-7309-94d2-a1e11f777c2f" xlink:to="loc_us-gaap_HedgingRelationshipDomain_019f14d5-2463-7bb2-b58f-2c55f02ba85c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetInvestmentHedgingMember_019f14d5-2463-7aff-81b8-301efa856d7c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NetInvestmentHedgingMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_HedgingRelationshipDomain_019f14d5-2463-7bb2-b58f-2c55f02ba85c" xlink:to="loc_us-gaap_NetInvestmentHedgingMember_019f14d5-2463-7aff-81b8-301efa856d7c" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_rcl_DerivativeInstrumentCreditRiskExposure_019f14d5-2463-75aa-be34-2897e18cc30d" xlink:href="rcl-20260630.xsd#rcl_DerivativeInstrumentCreditRiskExposure"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativesFairValueLineItems_019f14d5-2463-7b01-b0c8-9d1768d9506f" xlink:to="loc_rcl_DerivativeInstrumentCreditRiskExposure_019f14d5-2463-75aa-be34-2897e18cc30d" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_rcl_MaximumLengthOfTimeHedgedInDerivativeContract_019f14d5-2463-7f83-8e7b-e73448fd874c" xlink:href="rcl-20260630.xsd#rcl_MaximumLengthOfTimeHedgedInDerivativeContract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativesFairValueLineItems_019f14d5-2463-7b01-b0c8-9d1768d9506f" xlink:to="loc_rcl_MaximumLengthOfTimeHedgedInDerivativeContract_019f14d5-2463-7f83-8e7b-e73448fd874c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtPercentageBearingFixedInterestRate_019f14d5-2463-70b5-abe3-03848dbca611" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongTermDebtPercentageBearingFixedInterestRate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativesFairValueLineItems_019f14d5-2463-7b01-b0c8-9d1768d9506f" xlink:to="loc_us-gaap_LongTermDebtPercentageBearingFixedInterestRate_019f14d5-2463-70b5-abe3-03848dbca611" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeNotionalAmount_019f14d5-2463-77d8-9c6e-bf22e58f7419" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeNotionalAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativesFairValueLineItems_019f14d5-2463-7b01-b0c8-9d1768d9506f" xlink:to="loc_us-gaap_DerivativeNotionalAmount_019f14d5-2463-77d8-9c6e-bf22e58f7419" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermPurchaseCommitmentAmount_019f14d5-2463-7a74-ac41-a1ac0f8df63d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongTermPurchaseCommitmentAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativesFairValueLineItems_019f14d5-2463-7b01-b0c8-9d1768d9506f" xlink:to="loc_us-gaap_LongTermPurchaseCommitmentAmount_019f14d5-2463-7a74-ac41-a1ac0f8df63d" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_rcl_PurchaseContractDeposit_019f14d5-2463-757b-bd7b-c919050e1374" xlink:href="rcl-20260630.xsd#rcl_PurchaseContractDeposit"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativesFairValueLineItems_019f14d5-2463-7b01-b0c8-9d1768d9506f" xlink:to="loc_rcl_PurchaseContractDeposit_019f14d5-2463-757b-bd7b-c919050e1374" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_rcl_PercentageOfAggregateCostExposedToFluctuationsInEuroExchangeRate_019f14d5-2463-7e86-8582-157389de63b3" xlink:href="rcl-20260630.xsd#rcl_PercentageOfAggregateCostExposedToFluctuationsInEuroExchangeRate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativesFairValueLineItems_019f14d5-2463-7b01-b0c8-9d1768d9506f" xlink:to="loc_rcl_PercentageOfAggregateCostExposedToFluctuationsInEuroExchangeRate_019f14d5-2463-7e86-8582-157389de63b3" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NotionalAmountOfNonderivativeInstruments_019f14d5-2463-7a20-8b11-02bd469997b5" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NotionalAmountOfNonderivativeInstruments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativesFairValueLineItems_019f14d5-2463-7b01-b0c8-9d1768d9506f" xlink:to="loc_us-gaap_NotionalAmountOfNonderivativeInstruments_019f14d5-2463-7a20-8b11-02bd469997b5" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PriceRiskCashFlowHedgeUnrealizedGainLossToBeReclassifiedDuringNext12Months_019f14d5-2463-7965-b9a1-4b102cfae34b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PriceRiskCashFlowHedgeUnrealizedGainLossToBeReclassifiedDuringNext12Months"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativesFairValueLineItems_019f14d5-2463-7b01-b0c8-9d1768d9506f" xlink:to="loc_us-gaap_PriceRiskCashFlowHedgeUnrealizedGainLossToBeReclassifiedDuringNext12Months_019f14d5-2463-7965-b9a1-4b102cfae34b" xlink:type="arc" order="8"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.royalcaribbean.com/role/FairValueMeasurementsandDerivativeInstrumentsScheduleofInterestRateDerivativesDetails" xlink:type="simple" xlink:href="rcl-20260630.xsd#FairValueMeasurementsandDerivativeInstrumentsScheduleofInterestRateDerivativesDetails"/>
  <link:definitionLink xlink:role="http://www.royalcaribbean.com/role/FairValueMeasurementsandDerivativeInstrumentsScheduleofInterestRateDerivativesDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_019f14d5-2463-7e9d-ad37-d54947ca568c" 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_019f14d5-2463-778f-88dc-66d7e3f50c95" 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_019f14d5-2463-7e9d-ad37-d54947ca568c" xlink:to="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_019f14d5-2463-778f-88dc-66d7e3f50c95" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentAxis_019f14d5-2463-77de-a253-e2d6af6afa25" 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_019f14d5-2463-778f-88dc-66d7e3f50c95" xlink:to="loc_us-gaap_DebtInstrumentAxis_019f14d5-2463-77de-a253-e2d6af6afa25" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_019f14d5-2463-77de-a253-e2d6af6afa25_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_019f14d5-2463-77de-a253-e2d6af6afa25" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_019f14d5-2463-77de-a253-e2d6af6afa25_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_019f14d5-2463-713f-bdf7-956e40459e45" 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_019f14d5-2463-77de-a253-e2d6af6afa25" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_019f14d5-2463-713f-bdf7-956e40459e45" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_rcl_QuantumOfTheSeasUnsecuredTermLoanMember_019f14d5-2463-74d4-a452-45854aed9468" xlink:href="rcl-20260630.xsd#rcl_QuantumOfTheSeasUnsecuredTermLoanMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_019f14d5-2463-713f-bdf7-956e40459e45" xlink:to="loc_rcl_QuantumOfTheSeasUnsecuredTermLoanMember_019f14d5-2463-74d4-a452-45854aed9468" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_rcl_AnthemOfTheSeasUnsecuredTermLoanMember_019f14d5-2463-7930-9b9c-de3fb041b1c8" xlink:href="rcl-20260630.xsd#rcl_AnthemOfTheSeasUnsecuredTermLoanMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_019f14d5-2463-713f-bdf7-956e40459e45" xlink:to="loc_rcl_AnthemOfTheSeasUnsecuredTermLoanMember_019f14d5-2463-7930-9b9c-de3fb041b1c8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_rcl_OvationoftheSeasUnsecuredTermLoanMember_019f14d5-2463-7fbb-aa4d-36ce16f0679d" xlink:href="rcl-20260630.xsd#rcl_OvationoftheSeasUnsecuredTermLoanMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_019f14d5-2463-713f-bdf7-956e40459e45" xlink:to="loc_rcl_OvationoftheSeasUnsecuredTermLoanMember_019f14d5-2463-7fbb-aa4d-36ce16f0679d" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_rcl_HarmonyoftheSeasUnsecuredTermLoanMember_019f14d5-2463-7356-a533-a2b9470e4750" xlink:href="rcl-20260630.xsd#rcl_HarmonyoftheSeasUnsecuredTermLoanMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_019f14d5-2463-713f-bdf7-956e40459e45" xlink:to="loc_rcl_HarmonyoftheSeasUnsecuredTermLoanMember_019f14d5-2463-7356-a533-a2b9470e4750" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_rcl_OdysseyOfTheSeasTermLoanOneMember_019f14d5-2463-7ba6-b264-972f6a66528a" xlink:href="rcl-20260630.xsd#rcl_OdysseyOfTheSeasTermLoanOneMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_019f14d5-2463-713f-bdf7-956e40459e45" xlink:to="loc_rcl_OdysseyOfTheSeasTermLoanOneMember_019f14d5-2463-7ba6-b264-972f6a66528a" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_rcl_OdysseyOfTheSeasTermLoanTwoMember_019f14d5-2463-7bdb-9ad6-a5087e1225f8" xlink:href="rcl-20260630.xsd#rcl_OdysseyOfTheSeasTermLoanTwoMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_019f14d5-2463-713f-bdf7-956e40459e45" xlink:to="loc_rcl_OdysseyOfTheSeasTermLoanTwoMember_019f14d5-2463-7bdb-9ad6-a5087e1225f8" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentRiskAxis_019f14d5-2463-7e30-be74-9c5bd1a1f972" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeInstrumentRiskAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_019f14d5-2463-778f-88dc-66d7e3f50c95" xlink:to="loc_us-gaap_DerivativeInstrumentRiskAxis_019f14d5-2463-7e30-be74-9c5bd1a1f972" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_019f14d5-2463-7e30-be74-9c5bd1a1f972_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_019f14d5-2463-7e30-be74-9c5bd1a1f972" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_019f14d5-2463-7e30-be74-9c5bd1a1f972_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_019f14d5-2463-7ee8-8bfb-b6352cd32e9e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_019f14d5-2463-7e30-be74-9c5bd1a1f972" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_019f14d5-2463-7ee8-8bfb-b6352cd32e9e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestRateSwapMember_019f14d5-2463-70d0-b6b2-ab1d02ac2ac4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InterestRateSwapMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_019f14d5-2463-7ee8-8bfb-b6352cd32e9e" xlink:to="loc_us-gaap_InterestRateSwapMember_019f14d5-2463-70d0-b6b2-ab1d02ac2ac4" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_VariableRateAxis_019f14d5-2463-7dc4-8c66-152fdf612320" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_VariableRateAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_019f14d5-2463-778f-88dc-66d7e3f50c95" xlink:to="loc_us-gaap_VariableRateAxis_019f14d5-2463-7dc4-8c66-152fdf612320" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_VariableRateDomain_019f14d5-2463-7dc4-8c66-152fdf612320_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_VariableRateDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_VariableRateAxis_019f14d5-2463-7dc4-8c66-152fdf612320" xlink:to="loc_us-gaap_VariableRateDomain_019f14d5-2463-7dc4-8c66-152fdf612320_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_VariableRateDomain_019f14d5-2463-770e-9034-8e1e8ae0d3aa" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_VariableRateDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_VariableRateAxis_019f14d5-2463-7dc4-8c66-152fdf612320" xlink:to="loc_us-gaap_VariableRateDomain_019f14d5-2463-770e-9034-8e1e8ae0d3aa" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SecuredOvernightFinancingRateSofrMember_019f14d5-2463-7b26-81c7-f126b3ae2d49" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SecuredOvernightFinancingRateSofrMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_VariableRateDomain_019f14d5-2463-770e-9034-8e1e8ae0d3aa" xlink:to="loc_us-gaap_SecuredOvernightFinancingRateSofrMember_019f14d5-2463-7b26-81c7-f126b3ae2d49" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_rcl_EuroInterbankOfferedRateEURIBORMember_019f14d5-2463-7ac9-801d-8a1e59087aa9" xlink:href="rcl-20260630.xsd#rcl_EuroInterbankOfferedRateEURIBORMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_VariableRateDomain_019f14d5-2463-770e-9034-8e1e8ae0d3aa" xlink:to="loc_rcl_EuroInterbankOfferedRateEURIBORMember_019f14d5-2463-7ac9-801d-8a1e59087aa9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis_019f14d5-2463-7976-b209-bf0135fdfa45" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_019f14d5-2463-778f-88dc-66d7e3f50c95" xlink:to="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis_019f14d5-2463-7976-b209-bf0135fdfa45" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingRelationshipDomain_019f14d5-2463-7976-b209-bf0135fdfa45_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_HedgingRelationshipDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis_019f14d5-2463-7976-b209-bf0135fdfa45" xlink:to="loc_us-gaap_HedgingRelationshipDomain_019f14d5-2463-7976-b209-bf0135fdfa45_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingRelationshipDomain_019f14d5-2463-7a01-a41e-0a2b908a2cc4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_HedgingRelationshipDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis_019f14d5-2463-7976-b209-bf0135fdfa45" xlink:to="loc_us-gaap_HedgingRelationshipDomain_019f14d5-2463-7a01-a41e-0a2b908a2cc4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashFlowHedgingMember_019f14d5-2463-7594-93f8-7663101ef648" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CashFlowHedgingMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_HedgingRelationshipDomain_019f14d5-2463-7a01-a41e-0a2b908a2cc4" xlink:to="loc_us-gaap_CashFlowHedgingMember_019f14d5-2463-7594-93f8-7663101ef648" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestRateCashFlowHedgesAbstract_019f14d5-2463-7a3d-b95d-93476644090b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InterestRateCashFlowHedgesAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_019f14d5-2463-7e9d-ad37-d54947ca568c" xlink:to="loc_us-gaap_InterestRateCashFlowHedgesAbstract_019f14d5-2463-7a3d-b95d-93476644090b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_rcl_UnsecuredTermLoanMaximumBorrowingCommitmentPerShip_019f14d5-2463-749c-8bc2-5129401d264a" xlink:href="rcl-20260630.xsd#rcl_UnsecuredTermLoanMaximumBorrowingCommitmentPerShip"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_InterestRateCashFlowHedgesAbstract_019f14d5-2463-7a3d-b95d-93476644090b" xlink:to="loc_rcl_UnsecuredTermLoanMaximumBorrowingCommitmentPerShip_019f14d5-2463-749c-8bc2-5129401d264a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_019f14d5-2463-7577-8bae-ac496212929e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentBasisSpreadOnVariableRate1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_InterestRateCashFlowHedgesAbstract_019f14d5-2463-7a3d-b95d-93476644090b" xlink:to="loc_us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_019f14d5-2463-7577-8bae-ac496212929e" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeFixedInterestRate_019f14d5-2463-7b90-a6c7-4f02335fb8a1" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeFixedInterestRate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_InterestRateCashFlowHedgesAbstract_019f14d5-2463-7a3d-b95d-93476644090b" xlink:to="loc_us-gaap_DerivativeFixedInterestRate_019f14d5-2463-7b90-a6c7-4f02335fb8a1" xlink:type="arc" order="3"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.royalcaribbean.com/role/FairValueMeasurementsandDerivativeInstrumentsScheduleofOutstandingFuelSwapAgreementsDetails" xlink:type="simple" xlink:href="rcl-20260630.xsd#FairValueMeasurementsandDerivativeInstrumentsScheduleofOutstandingFuelSwapAgreementsDetails"/>
  <link:definitionLink xlink:role="http://www.royalcaribbean.com/role/FairValueMeasurementsandDerivativeInstrumentsScheduleofOutstandingFuelSwapAgreementsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeLineItems_019f14d5-2463-7515-a97e-1c5c79b69d0f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeTable_019f14d5-2463-7608-96b5-7e192255726c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DerivativeLineItems_019f14d5-2463-7515-a97e-1c5c79b69d0f" xlink:to="loc_us-gaap_DerivativeTable_019f14d5-2463-7608-96b5-7e192255726c" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentRiskAxis_019f14d5-2463-747a-af9d-ee69266c711c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeInstrumentRiskAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DerivativeTable_019f14d5-2463-7608-96b5-7e192255726c" xlink:to="loc_us-gaap_DerivativeInstrumentRiskAxis_019f14d5-2463-747a-af9d-ee69266c711c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_019f14d5-2463-747a-af9d-ee69266c711c_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_019f14d5-2463-747a-af9d-ee69266c711c" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_019f14d5-2463-747a-af9d-ee69266c711c_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_019f14d5-2463-70fd-9617-6d61898f2801" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_019f14d5-2463-747a-af9d-ee69266c711c" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_019f14d5-2463-70fd-9617-6d61898f2801" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommodityContractMember_019f14d5-2463-7140-89fa-61a584524f5e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommodityContractMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_019f14d5-2463-70fd-9617-6d61898f2801" xlink:to="loc_us-gaap_CommodityContractMember_019f14d5-2463-7140-89fa-61a584524f5e" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_rcl_DerivativeMaturityAxis_019f14d5-2463-7480-8221-7084d2e58767" xlink:href="rcl-20260630.xsd#rcl_DerivativeMaturityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DerivativeTable_019f14d5-2463-7608-96b5-7e192255726c" xlink:to="loc_rcl_DerivativeMaturityAxis_019f14d5-2463-7480-8221-7084d2e58767" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_rcl_DerivativeMaturityDomain_019f14d5-2463-7480-8221-7084d2e58767_default" xlink:href="rcl-20260630.xsd#rcl_DerivativeMaturityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_rcl_DerivativeMaturityAxis_019f14d5-2463-7480-8221-7084d2e58767" xlink:to="loc_rcl_DerivativeMaturityDomain_019f14d5-2463-7480-8221-7084d2e58767_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_rcl_DerivativeMaturityDomain_019f14d5-2463-7081-9a1a-f6fdefee2e53" xlink:href="rcl-20260630.xsd#rcl_DerivativeMaturityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_rcl_DerivativeMaturityAxis_019f14d5-2463-7480-8221-7084d2e58767" xlink:to="loc_rcl_DerivativeMaturityDomain_019f14d5-2463-7081-9a1a-f6fdefee2e53" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_rcl_DerivativeMaturityYearOneMember_019f14d5-2463-7eb0-99be-3384149cbf37" xlink:href="rcl-20260630.xsd#rcl_DerivativeMaturityYearOneMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_rcl_DerivativeMaturityDomain_019f14d5-2463-7081-9a1a-f6fdefee2e53" xlink:to="loc_rcl_DerivativeMaturityYearOneMember_019f14d5-2463-7eb0-99be-3384149cbf37" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_rcl_DerivativeMaturityYearTwoMember_019f14d5-2463-73cd-88ce-a8f3ce8787a7" xlink:href="rcl-20260630.xsd#rcl_DerivativeMaturityYearTwoMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_rcl_DerivativeMaturityDomain_019f14d5-2463-7081-9a1a-f6fdefee2e53" xlink:to="loc_rcl_DerivativeMaturityYearTwoMember_019f14d5-2463-73cd-88ce-a8f3ce8787a7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_rcl_DerivativeMaturityYearThreeMember_019f14d5-2463-7bf7-9138-40cd9458fdb0" xlink:href="rcl-20260630.xsd#rcl_DerivativeMaturityYearThreeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_rcl_DerivativeMaturityDomain_019f14d5-2463-7081-9a1a-f6fdefee2e53" xlink:to="loc_rcl_DerivativeMaturityYearThreeMember_019f14d5-2463-7bf7-9138-40cd9458fdb0" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_rcl_DerivativeMaturityYearFourMember_019f14d5-2463-7b04-bf01-c20ab28726c1" xlink:href="rcl-20260630.xsd#rcl_DerivativeMaturityYearFourMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_rcl_DerivativeMaturityDomain_019f14d5-2463-7081-9a1a-f6fdefee2e53" xlink:to="loc_rcl_DerivativeMaturityYearFourMember_019f14d5-2463-7b04-bf01-c20ab28726c1" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeNonmonetaryNotionalAmount_019f14d5-2463-74b8-b7cb-b98db6c7fa16" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeNonmonetaryNotionalAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeLineItems_019f14d5-2463-7515-a97e-1c5c79b69d0f" xlink:to="loc_us-gaap_DerivativeNonmonetaryNotionalAmount_019f14d5-2463-74b8-b7cb-b98db6c7fa16" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeNonmonetaryNotionalAmountPercentOfRequiredNeedCoverage_019f14d5-2463-7b53-8ca3-895a37c1555d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeNonmonetaryNotionalAmountPercentOfRequiredNeedCoverage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeLineItems_019f14d5-2463-7515-a97e-1c5c79b69d0f" xlink:to="loc_us-gaap_DerivativeNonmonetaryNotionalAmountPercentOfRequiredNeedCoverage_019f14d5-2463-7b53-8ca3-895a37c1555d" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.royalcaribbean.com/role/FairValueMeasurementsandDerivativeInstrumentsScheduleofFairValueandLineItemCaptionofDerivativeInstrumentsDetails" xlink:type="simple" xlink:href="rcl-20260630.xsd#FairValueMeasurementsandDerivativeInstrumentsScheduleofFairValueandLineItemCaptionofDerivativeInstrumentsDetails"/>
  <link:definitionLink xlink:role="http://www.royalcaribbean.com/role/FairValueMeasurementsandDerivativeInstrumentsScheduleofFairValueandLineItemCaptionofDerivativeInstrumentsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativesFairValueLineItems_019f14d5-2463-75a6-97bb-89bdec285dba" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativesFairValueLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable_019f14d5-2463-7a42-98c2-98b7c18c6c36" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DerivativesFairValueLineItems_019f14d5-2463-75a6-97bb-89bdec285dba" xlink:to="loc_us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable_019f14d5-2463-7a42-98c2-98b7c18c6c36" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentRiskAxis_019f14d5-2463-7aa8-9188-439385d1ee14" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeInstrumentRiskAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable_019f14d5-2463-7a42-98c2-98b7c18c6c36" xlink:to="loc_us-gaap_DerivativeInstrumentRiskAxis_019f14d5-2463-7aa8-9188-439385d1ee14" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_019f14d5-2463-7aa8-9188-439385d1ee14_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_019f14d5-2463-7aa8-9188-439385d1ee14" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_019f14d5-2463-7aa8-9188-439385d1ee14_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_019f14d5-2463-7729-bf5a-990057c7f11c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_019f14d5-2463-7aa8-9188-439385d1ee14" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_019f14d5-2463-7729-bf5a-990057c7f11c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestRateSwapMember_019f14d5-2463-7936-ab0b-be005aa4e1cb" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InterestRateSwapMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_019f14d5-2463-7729-bf5a-990057c7f11c" xlink:to="loc_us-gaap_InterestRateSwapMember_019f14d5-2463-7936-ab0b-be005aa4e1cb" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ForeignExchangeForwardMember_019f14d5-2463-7cdc-8131-1200e6189594" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ForeignExchangeForwardMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_019f14d5-2463-7729-bf5a-990057c7f11c" xlink:to="loc_us-gaap_ForeignExchangeForwardMember_019f14d5-2463-7cdc-8131-1200e6189594" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommodityContractMember_019f14d5-2463-7e81-b46c-c476eea5cbab" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommodityContractMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_019f14d5-2463-7729-bf5a-990057c7f11c" xlink:to="loc_us-gaap_CommodityContractMember_019f14d5-2463-7e81-b46c-c476eea5cbab" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingDesignationAxis_019f14d5-2463-7fc4-b2fd-f36f86cb4fa1" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_HedgingDesignationAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable_019f14d5-2463-7a42-98c2-98b7c18c6c36" xlink:to="loc_us-gaap_HedgingDesignationAxis_019f14d5-2463-7fc4-b2fd-f36f86cb4fa1" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingDesignationDomain_019f14d5-2463-7fc4-b2fd-f36f86cb4fa1_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_HedgingDesignationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_HedgingDesignationAxis_019f14d5-2463-7fc4-b2fd-f36f86cb4fa1" xlink:to="loc_us-gaap_HedgingDesignationDomain_019f14d5-2463-7fc4-b2fd-f36f86cb4fa1_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingDesignationDomain_019f14d5-2463-7e2a-9273-b05bac055d8e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_HedgingDesignationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_HedgingDesignationAxis_019f14d5-2463-7fc4-b2fd-f36f86cb4fa1" xlink:to="loc_us-gaap_HedgingDesignationDomain_019f14d5-2463-7e2a-9273-b05bac055d8e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DesignatedAsHedgingInstrumentMember_019f14d5-2463-7fd9-9f3d-74a036949212" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DesignatedAsHedgingInstrumentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_HedgingDesignationDomain_019f14d5-2463-7e2a-9273-b05bac055d8e" xlink:to="loc_us-gaap_DesignatedAsHedgingInstrumentMember_019f14d5-2463-7fd9-9f3d-74a036949212" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementOfFinancialPositionLocationBalanceAxis_019f14d5-2463-71fb-a00a-a1a3427c7907" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementOfFinancialPositionLocationBalanceAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable_019f14d5-2463-7a42-98c2-98b7c18c6c36" xlink:to="loc_us-gaap_StatementOfFinancialPositionLocationBalanceAxis_019f14d5-2463-71fb-a00a-a1a3427c7907" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeAssetsAbstract_019f14d5-2463-7097-a6e6-4493ce58573f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeAssetsAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativesFairValueLineItems_019f14d5-2463-75a6-97bb-89bdec285dba" xlink:to="loc_us-gaap_DerivativeAssetsAbstract_019f14d5-2463-7097-a6e6-4493ce58573f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeAssetStatementOfFinancialPositionExtensibleEnumeration_019f14d5-2463-7db3-8f0e-7f7bd91bd4eb" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeAssetStatementOfFinancialPositionExtensibleEnumeration"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeAssetsAbstract_019f14d5-2463-7097-a6e6-4493ce58573f" xlink:to="loc_us-gaap_DerivativeAssetStatementOfFinancialPositionExtensibleEnumeration_019f14d5-2463-7db3-8f0e-7f7bd91bd4eb" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeAssets_019f14d5-2463-7ff4-a8af-7f8df2428d06" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeAssetsAbstract_019f14d5-2463-7097-a6e6-4493ce58573f" xlink:to="loc_us-gaap_DerivativeAssets_019f14d5-2463-7ff4-a8af-7f8df2428d06" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeLiabilitiesAbstract_019f14d5-2463-71b3-a3e3-f36a04f6e238" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeLiabilitiesAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativesFairValueLineItems_019f14d5-2463-75a6-97bb-89bdec285dba" xlink:to="loc_us-gaap_DerivativeLiabilitiesAbstract_019f14d5-2463-71b3-a3e3-f36a04f6e238" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeLiabilityStatementOfFinancialPositionExtensibleEnumeration_019f14d5-2463-7c99-839b-78b33193a779" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeLiabilityStatementOfFinancialPositionExtensibleEnumeration"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeLiabilitiesAbstract_019f14d5-2463-71b3-a3e3-f36a04f6e238" xlink:to="loc_us-gaap_DerivativeLiabilityStatementOfFinancialPositionExtensibleEnumeration_019f14d5-2463-7c99-839b-78b33193a779" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeLiabilities_019f14d5-2463-71fc-ac96-78e56e55a947" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeLiabilitiesAbstract_019f14d5-2463-71b3-a3e3-f36a04f6e238" xlink:to="loc_us-gaap_DerivativeLiabilities_019f14d5-2463-71fc-ac96-78e56e55a947" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.royalcaribbean.com/role/FairValueMeasurementsandDerivativeInstrumentsScheduleofFairValueandLineItemCaptionofDerivativeInstrumentsDetails_1" xlink:type="simple" xlink:href="rcl-20260630.xsd#FairValueMeasurementsandDerivativeInstrumentsScheduleofFairValueandLineItemCaptionofDerivativeInstrumentsDetails_1"/>
  <link:definitionLink xlink:role="http://www.royalcaribbean.com/role/FairValueMeasurementsandDerivativeInstrumentsScheduleofFairValueandLineItemCaptionofDerivativeInstrumentsDetails_1" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativesFairValueLineItems_019f14d5-2463-75a6-97bb-89bdec285dba" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativesFairValueLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable_019f14d5-2463-7a42-98c2-98b7c18c6c36" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DerivativesFairValueLineItems_019f14d5-2463-75a6-97bb-89bdec285dba" xlink:to="loc_us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable_019f14d5-2463-7a42-98c2-98b7c18c6c36" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentRiskAxis_019f14d5-2463-7aa8-9188-439385d1ee14" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeInstrumentRiskAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable_019f14d5-2463-7a42-98c2-98b7c18c6c36" xlink:to="loc_us-gaap_DerivativeInstrumentRiskAxis_019f14d5-2463-7aa8-9188-439385d1ee14" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_019f14d5-2463-7aa8-9188-439385d1ee14_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_019f14d5-2463-7aa8-9188-439385d1ee14" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_019f14d5-2463-7aa8-9188-439385d1ee14_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_019f14d5-2463-7729-bf5a-990057c7f11c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_019f14d5-2463-7aa8-9188-439385d1ee14" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_019f14d5-2463-7729-bf5a-990057c7f11c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestRateSwapMember_019f14d5-2463-7936-ab0b-be005aa4e1cb" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InterestRateSwapMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_019f14d5-2463-7729-bf5a-990057c7f11c" xlink:to="loc_us-gaap_InterestRateSwapMember_019f14d5-2463-7936-ab0b-be005aa4e1cb" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ForeignExchangeForwardMember_019f14d5-2463-7cdc-8131-1200e6189594" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ForeignExchangeForwardMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_019f14d5-2463-7729-bf5a-990057c7f11c" xlink:to="loc_us-gaap_ForeignExchangeForwardMember_019f14d5-2463-7cdc-8131-1200e6189594" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommodityContractMember_019f14d5-2463-7e81-b46c-c476eea5cbab" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommodityContractMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_019f14d5-2463-7729-bf5a-990057c7f11c" xlink:to="loc_us-gaap_CommodityContractMember_019f14d5-2463-7e81-b46c-c476eea5cbab" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingDesignationAxis_019f14d5-2463-7fc4-b2fd-f36f86cb4fa1" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_HedgingDesignationAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable_019f14d5-2463-7a42-98c2-98b7c18c6c36" xlink:to="loc_us-gaap_HedgingDesignationAxis_019f14d5-2463-7fc4-b2fd-f36f86cb4fa1" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingDesignationDomain_019f14d5-2463-7fc4-b2fd-f36f86cb4fa1_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_HedgingDesignationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_HedgingDesignationAxis_019f14d5-2463-7fc4-b2fd-f36f86cb4fa1" xlink:to="loc_us-gaap_HedgingDesignationDomain_019f14d5-2463-7fc4-b2fd-f36f86cb4fa1_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingDesignationDomain_019f14d5-2463-7e2a-9273-b05bac055d8e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_HedgingDesignationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_HedgingDesignationAxis_019f14d5-2463-7fc4-b2fd-f36f86cb4fa1" xlink:to="loc_us-gaap_HedgingDesignationDomain_019f14d5-2463-7e2a-9273-b05bac055d8e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DesignatedAsHedgingInstrumentMember_019f14d5-2463-7fd9-9f3d-74a036949212" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DesignatedAsHedgingInstrumentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_HedgingDesignationDomain_019f14d5-2463-7e2a-9273-b05bac055d8e" xlink:to="loc_us-gaap_DesignatedAsHedgingInstrumentMember_019f14d5-2463-7fd9-9f3d-74a036949212" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeAssetsAbstract_019f14d5-2463-7097-a6e6-4493ce58573f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeAssetsAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativesFairValueLineItems_019f14d5-2463-75a6-97bb-89bdec285dba" xlink:to="loc_us-gaap_DerivativeAssetsAbstract_019f14d5-2463-7097-a6e6-4493ce58573f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeAssetStatementOfFinancialPositionExtensibleEnumeration_019f14d5-2463-7db3-8f0e-7f7bd91bd4eb" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeAssetStatementOfFinancialPositionExtensibleEnumeration"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeAssetsAbstract_019f14d5-2463-7097-a6e6-4493ce58573f" xlink:to="loc_us-gaap_DerivativeAssetStatementOfFinancialPositionExtensibleEnumeration_019f14d5-2463-7db3-8f0e-7f7bd91bd4eb" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeAssets_019f14d5-2463-7ff4-a8af-7f8df2428d06" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeAssetsAbstract_019f14d5-2463-7097-a6e6-4493ce58573f" xlink:to="loc_us-gaap_DerivativeAssets_019f14d5-2463-7ff4-a8af-7f8df2428d06" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeLiabilitiesAbstract_019f14d5-2463-71b3-a3e3-f36a04f6e238" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeLiabilitiesAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativesFairValueLineItems_019f14d5-2463-75a6-97bb-89bdec285dba" xlink:to="loc_us-gaap_DerivativeLiabilitiesAbstract_019f14d5-2463-71b3-a3e3-f36a04f6e238" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeLiabilityStatementOfFinancialPositionExtensibleEnumeration_019f14d5-2463-7c99-839b-78b33193a779" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeLiabilityStatementOfFinancialPositionExtensibleEnumeration"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeLiabilitiesAbstract_019f14d5-2463-71b3-a3e3-f36a04f6e238" xlink:to="loc_us-gaap_DerivativeLiabilityStatementOfFinancialPositionExtensibleEnumeration_019f14d5-2463-7c99-839b-78b33193a779" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeLiabilities_019f14d5-2463-71fc-ac96-78e56e55a947" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeLiabilitiesAbstract_019f14d5-2463-71b3-a3e3-f36a04f6e238" xlink:to="loc_us-gaap_DerivativeLiabilities_019f14d5-2463-71fc-ac96-78e56e55a947" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.royalcaribbean.com/role/FairValueMeasurementsandDerivativeInstrumentsScheduleofCarryingValueandLineItemCaptionofNonDerivativeInstrumentsDesignatedasHedgingInstrumentsDetails" xlink:type="simple" xlink:href="rcl-20260630.xsd#FairValueMeasurementsandDerivativeInstrumentsScheduleofCarryingValueandLineItemCaptionofNonDerivativeInstrumentsDesignatedasHedgingInstrumentsDetails"/>
  <link:definitionLink xlink:role="http://www.royalcaribbean.com/role/FairValueMeasurementsandDerivativeInstrumentsScheduleofCarryingValueandLineItemCaptionofNonDerivativeInstrumentsDesignatedasHedgingInstrumentsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeLineItems_019f14d5-2463-756e-8f4c-4ffac654bb31" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeTable_019f14d5-2463-73b3-b259-850f0386a91f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DerivativeLineItems_019f14d5-2463-756e-8f4c-4ffac654bb31" xlink:to="loc_us-gaap_DerivativeTable_019f14d5-2463-73b3-b259-850f0386a91f" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis_019f14d5-2463-7d40-a253-bacc2124b587" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DerivativeTable_019f14d5-2463-73b3-b259-850f0386a91f" xlink:to="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis_019f14d5-2463-7d40-a253-bacc2124b587" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingRelationshipDomain_019f14d5-2463-7d40-a253-bacc2124b587_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_HedgingRelationshipDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis_019f14d5-2463-7d40-a253-bacc2124b587" xlink:to="loc_us-gaap_HedgingRelationshipDomain_019f14d5-2463-7d40-a253-bacc2124b587_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingRelationshipDomain_019f14d5-2463-791c-a589-fb7240da657c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_HedgingRelationshipDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis_019f14d5-2463-7d40-a253-bacc2124b587" xlink:to="loc_us-gaap_HedgingRelationshipDomain_019f14d5-2463-791c-a589-fb7240da657c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetInvestmentHedgingMember_019f14d5-2463-7e7f-9223-18efa88915b5" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NetInvestmentHedgingMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_HedgingRelationshipDomain_019f14d5-2463-791c-a589-fb7240da657c" xlink:to="loc_us-gaap_NetInvestmentHedgingMember_019f14d5-2463-7e7f-9223-18efa88915b5" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingDesignationAxis_019f14d5-2463-792a-806f-657f3b384751" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_HedgingDesignationAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DerivativeTable_019f14d5-2463-73b3-b259-850f0386a91f" xlink:to="loc_us-gaap_HedgingDesignationAxis_019f14d5-2463-792a-806f-657f3b384751" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingDesignationDomain_019f14d5-2463-792a-806f-657f3b384751_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_HedgingDesignationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_HedgingDesignationAxis_019f14d5-2463-792a-806f-657f3b384751" xlink:to="loc_us-gaap_HedgingDesignationDomain_019f14d5-2463-792a-806f-657f3b384751_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingDesignationDomain_019f14d5-2463-7210-83ff-0a8f5bbcfb77" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_HedgingDesignationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_HedgingDesignationAxis_019f14d5-2463-792a-806f-657f3b384751" xlink:to="loc_us-gaap_HedgingDesignationDomain_019f14d5-2463-7210-83ff-0a8f5bbcfb77" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DesignatedAsHedgingInstrumentMember_019f14d5-2463-7342-9161-c4a86bd85398" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DesignatedAsHedgingInstrumentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_HedgingDesignationDomain_019f14d5-2463-7210-83ff-0a8f5bbcfb77" xlink:to="loc_us-gaap_DesignatedAsHedgingInstrumentMember_019f14d5-2463-7342-9161-c4a86bd85398" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SfpLocationActivityCapitalizationAxis_019f14d5-2463-799e-ab7c-c8c0ffbc632e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SfpLocationActivityCapitalizationAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DerivativeTable_019f14d5-2463-73b3-b259-850f0386a91f" xlink:to="loc_us-gaap_SfpLocationActivityCapitalizationAxis_019f14d5-2463-799e-ab7c-c8c0ffbc632e" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NotionalAmountOfNonderivativeInstruments_019f14d5-2463-701a-bd48-925ac64c4776" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NotionalAmountOfNonderivativeInstruments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeLineItems_019f14d5-2463-756e-8f4c-4ffac654bb31" xlink:to="loc_us-gaap_NotionalAmountOfNonderivativeInstruments_019f14d5-2463-701a-bd48-925ac64c4776" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.royalcaribbean.com/role/FairValueMeasurementsandDerivativeInstrumentsScheduleofCarryingValueandLineItemCaptionofNonDerivativeInstrumentsDesignatedasHedgingInstrumentsDetails_1" xlink:type="simple" xlink:href="rcl-20260630.xsd#FairValueMeasurementsandDerivativeInstrumentsScheduleofCarryingValueandLineItemCaptionofNonDerivativeInstrumentsDesignatedasHedgingInstrumentsDetails_1"/>
  <link:definitionLink xlink:role="http://www.royalcaribbean.com/role/FairValueMeasurementsandDerivativeInstrumentsScheduleofCarryingValueandLineItemCaptionofNonDerivativeInstrumentsDesignatedasHedgingInstrumentsDetails_1" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeLineItems_019f14d5-2463-756e-8f4c-4ffac654bb31" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeTable_019f14d5-2463-73b3-b259-850f0386a91f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DerivativeLineItems_019f14d5-2463-756e-8f4c-4ffac654bb31" xlink:to="loc_us-gaap_DerivativeTable_019f14d5-2463-73b3-b259-850f0386a91f" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis_019f14d5-2463-7d40-a253-bacc2124b587" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DerivativeTable_019f14d5-2463-73b3-b259-850f0386a91f" xlink:to="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis_019f14d5-2463-7d40-a253-bacc2124b587" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingRelationshipDomain_019f14d5-2463-7d40-a253-bacc2124b587_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_HedgingRelationshipDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis_019f14d5-2463-7d40-a253-bacc2124b587" xlink:to="loc_us-gaap_HedgingRelationshipDomain_019f14d5-2463-7d40-a253-bacc2124b587_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingRelationshipDomain_019f14d5-2463-791c-a589-fb7240da657c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_HedgingRelationshipDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis_019f14d5-2463-7d40-a253-bacc2124b587" xlink:to="loc_us-gaap_HedgingRelationshipDomain_019f14d5-2463-791c-a589-fb7240da657c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetInvestmentHedgingMember_019f14d5-2463-7e7f-9223-18efa88915b5" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NetInvestmentHedgingMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_HedgingRelationshipDomain_019f14d5-2463-791c-a589-fb7240da657c" xlink:to="loc_us-gaap_NetInvestmentHedgingMember_019f14d5-2463-7e7f-9223-18efa88915b5" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingDesignationAxis_019f14d5-2463-792a-806f-657f3b384751" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_HedgingDesignationAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DerivativeTable_019f14d5-2463-73b3-b259-850f0386a91f" xlink:to="loc_us-gaap_HedgingDesignationAxis_019f14d5-2463-792a-806f-657f3b384751" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingDesignationDomain_019f14d5-2463-792a-806f-657f3b384751_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_HedgingDesignationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_HedgingDesignationAxis_019f14d5-2463-792a-806f-657f3b384751" xlink:to="loc_us-gaap_HedgingDesignationDomain_019f14d5-2463-792a-806f-657f3b384751_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingDesignationDomain_019f14d5-2463-7210-83ff-0a8f5bbcfb77" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_HedgingDesignationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_HedgingDesignationAxis_019f14d5-2463-792a-806f-657f3b384751" xlink:to="loc_us-gaap_HedgingDesignationDomain_019f14d5-2463-7210-83ff-0a8f5bbcfb77" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DesignatedAsHedgingInstrumentMember_019f14d5-2463-7342-9161-c4a86bd85398" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DesignatedAsHedgingInstrumentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_HedgingDesignationDomain_019f14d5-2463-7210-83ff-0a8f5bbcfb77" xlink:to="loc_us-gaap_DesignatedAsHedgingInstrumentMember_019f14d5-2463-7342-9161-c4a86bd85398" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NotionalAmountOfNonderivativeInstruments_019f14d5-2463-701a-bd48-925ac64c4776" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NotionalAmountOfNonderivativeInstruments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeLineItems_019f14d5-2463-756e-8f4c-4ffac654bb31" xlink:to="loc_us-gaap_NotionalAmountOfNonderivativeInstruments_019f14d5-2463-701a-bd48-925ac64c4776" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.royalcaribbean.com/role/FairValueMeasurementsandDerivativeInstrumentsScheduleofEffectofDerivativeInstrumentsNotDesignatedasCashFlowHedgingInstrumentsDetails" xlink:type="simple" xlink:href="rcl-20260630.xsd#FairValueMeasurementsandDerivativeInstrumentsScheduleofEffectofDerivativeInstrumentsNotDesignatedasCashFlowHedgingInstrumentsDetails"/>
  <link:definitionLink xlink:role="http://www.royalcaribbean.com/role/FairValueMeasurementsandDerivativeInstrumentsScheduleofEffectofDerivativeInstrumentsNotDesignatedasCashFlowHedgingInstrumentsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentsGainLossLineItems_019f14d5-2463-749b-93a5-3ac59ac18239" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeInstrumentsGainLossLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable_019f14d5-2463-789f-a64f-55d2990286ea" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossLineItems_019f14d5-2463-749b-93a5-3ac59ac18239" xlink:to="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable_019f14d5-2463-789f-a64f-55d2990286ea" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentRiskAxis_019f14d5-2463-7fb5-bb00-5fb3eccbe592" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeInstrumentRiskAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable_019f14d5-2463-789f-a64f-55d2990286ea" xlink:to="loc_us-gaap_DerivativeInstrumentRiskAxis_019f14d5-2463-7fb5-bb00-5fb3eccbe592" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_019f14d5-2463-7fb5-bb00-5fb3eccbe592_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_019f14d5-2463-7fb5-bb00-5fb3eccbe592" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_019f14d5-2463-7fb5-bb00-5fb3eccbe592_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_019f14d5-2463-79b7-a69a-e6ef5766cb8f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_019f14d5-2463-7fb5-bb00-5fb3eccbe592" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_019f14d5-2463-79b7-a69a-e6ef5766cb8f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestRateSwapMember_019f14d5-2463-7ac5-966b-38c08366f5ba" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InterestRateSwapMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_019f14d5-2463-79b7-a69a-e6ef5766cb8f" xlink:to="loc_us-gaap_InterestRateSwapMember_019f14d5-2463-7ac5-966b-38c08366f5ba" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ForeignExchangeForwardMember_019f14d5-2463-7246-b794-c7b2d31e0888" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ForeignExchangeForwardMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_019f14d5-2463-79b7-a69a-e6ef5766cb8f" xlink:to="loc_us-gaap_ForeignExchangeForwardMember_019f14d5-2463-7246-b794-c7b2d31e0888" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommodityContractMember_019f14d5-2463-7d3b-9fdd-e0d7f65a7fc0" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommodityContractMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_019f14d5-2463-79b7-a69a-e6ef5766cb8f" xlink:to="loc_us-gaap_CommodityContractMember_019f14d5-2463-7d3b-9fdd-e0d7f65a7fc0" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAndTax_019f14d5-2463-72b0-b98b-33afec7ea035" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAndTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossLineItems_019f14d5-2463-749b-93a5-3ac59ac18239" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAndTax_019f14d5-2463-72b0-b98b-33afec7ea035" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.royalcaribbean.com/role/FairValueMeasurementsandDerivativeInstrumentsScheduleofNonDerivativeInstrumentsDesignatedasNetInvestmentHedgingInstrumentsDetails" xlink:type="simple" xlink:href="rcl-20260630.xsd#FairValueMeasurementsandDerivativeInstrumentsScheduleofNonDerivativeInstrumentsDesignatedasNetInvestmentHedgingInstrumentsDetails"/>
  <link:definitionLink xlink:role="http://www.royalcaribbean.com/role/FairValueMeasurementsandDerivativeInstrumentsScheduleofNonDerivativeInstrumentsDesignatedasNetInvestmentHedgingInstrumentsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentsGainLossLineItems_019f14d5-2463-70a3-be41-449d4049ce75" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeInstrumentsGainLossLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable_019f14d5-2463-78fd-a5ef-11536449ab2b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossLineItems_019f14d5-2463-70a3-be41-449d4049ce75" xlink:to="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable_019f14d5-2463-78fd-a5ef-11536449ab2b" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis_019f14d5-2463-762f-8391-9593a9d8d626" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable_019f14d5-2463-78fd-a5ef-11536449ab2b" xlink:to="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis_019f14d5-2463-762f-8391-9593a9d8d626" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingRelationshipDomain_019f14d5-2463-762f-8391-9593a9d8d626_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_HedgingRelationshipDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis_019f14d5-2463-762f-8391-9593a9d8d626" xlink:to="loc_us-gaap_HedgingRelationshipDomain_019f14d5-2463-762f-8391-9593a9d8d626_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingRelationshipDomain_019f14d5-2463-7806-8512-67e837b5775d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_HedgingRelationshipDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis_019f14d5-2463-762f-8391-9593a9d8d626" xlink:to="loc_us-gaap_HedgingRelationshipDomain_019f14d5-2463-7806-8512-67e837b5775d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetInvestmentHedgingMember_019f14d5-2463-7333-9c9b-184bd5d59e1d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NetInvestmentHedgingMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_HedgingRelationshipDomain_019f14d5-2463-7806-8512-67e837b5775d" xlink:to="loc_us-gaap_NetInvestmentHedgingMember_019f14d5-2463-7333-9c9b-184bd5d59e1d" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GeneralNetInvestmentHedgeInformationAbstract_019f14d5-2463-76d2-9c9e-8dd1bae0f34c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_GeneralNetInvestmentHedgeInformationAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossLineItems_019f14d5-2463-70a3-be41-449d4049ce75" xlink:to="loc_us-gaap_GeneralNetInvestmentHedgeInformationAbstract_019f14d5-2463-76d2-9c9e-8dd1bae0f34c" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossNetInvestmentHedgeGainLossBeforeReclassificationAndTax_019f14d5-2463-771d-a8fb-9734eae7dcf7" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherComprehensiveIncomeLossNetInvestmentHedgeGainLossBeforeReclassificationAndTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GeneralNetInvestmentHedgeInformationAbstract_019f14d5-2463-76d2-9c9e-8dd1bae0f34c" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossNetInvestmentHedgeGainLossBeforeReclassificationAndTax_019f14d5-2463-771d-a8fb-9734eae7dcf7" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.royalcaribbean.com/role/FairValueMeasurementsandDerivativeInstrumentsScheduleofEffectofDerivativeInstrumentsNotDesignatedasCashFlowHedgingInstrumentsDetails_1" xlink:type="simple" xlink:href="rcl-20260630.xsd#FairValueMeasurementsandDerivativeInstrumentsScheduleofEffectofDerivativeInstrumentsNotDesignatedasCashFlowHedgingInstrumentsDetails_1"/>
  <link:definitionLink xlink:role="http://www.royalcaribbean.com/role/FairValueMeasurementsandDerivativeInstrumentsScheduleofEffectofDerivativeInstrumentsNotDesignatedasCashFlowHedgingInstrumentsDetails_1" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeLineItems_019f14d5-2463-7fd8-bdd2-1d9c77a8fa94" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeTable_019f14d5-2463-764a-9fc6-4078dc238e5d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DerivativeLineItems_019f14d5-2463-7fd8-bdd2-1d9c77a8fa94" xlink:to="loc_us-gaap_DerivativeTable_019f14d5-2463-764a-9fc6-4078dc238e5d" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentRiskAxis_019f14d5-2463-737d-9b65-b6d3171c26cc" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeInstrumentRiskAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DerivativeTable_019f14d5-2463-764a-9fc6-4078dc238e5d" xlink:to="loc_us-gaap_DerivativeInstrumentRiskAxis_019f14d5-2463-737d-9b65-b6d3171c26cc" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_019f14d5-2463-737d-9b65-b6d3171c26cc_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_019f14d5-2463-737d-9b65-b6d3171c26cc" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_019f14d5-2463-737d-9b65-b6d3171c26cc_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_019f14d5-2463-79a7-8902-e1a2395d3a9e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_019f14d5-2463-737d-9b65-b6d3171c26cc" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_019f14d5-2463-79a7-8902-e1a2395d3a9e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ForeignExchangeContractMember_019f14d5-2463-78fe-bf8e-c0f0fd916eab" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ForeignExchangeContractMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_019f14d5-2463-79a7-8902-e1a2395d3a9e" xlink:to="loc_us-gaap_ForeignExchangeContractMember_019f14d5-2463-78fe-bf8e-c0f0fd916eab" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommodityContractMember_019f1f7d-3bda-7cd0-a721-99fb4e0ab95d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommodityContractMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_019f14d5-2463-79a7-8902-e1a2395d3a9e" xlink:to="loc_us-gaap_CommodityContractMember_019f1f7d-3bda-7cd0-a721-99fb4e0ab95d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementOfIncomeLocationBalanceAxis_019f14d5-2463-7f6e-8dd5-236cb40cabfc" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementOfIncomeLocationBalanceAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DerivativeTable_019f14d5-2463-764a-9fc6-4078dc238e5d" xlink:to="loc_us-gaap_StatementOfIncomeLocationBalanceAxis_019f14d5-2463-7f6e-8dd5-236cb40cabfc" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet_019f14d5-2463-7fdb-88a7-742f8d1c8c83" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeLineItems_019f14d5-2463-7fd8-bdd2-1d9c77a8fa94" xlink:to="loc_us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet_019f14d5-2463-7fdb-88a7-742f8d1c8c83" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.royalcaribbean.com/role/FairValueMeasurementsandDerivativeInstrumentsScheduleofEffectofDerivativeInstrumentsNotDesignatedasCashFlowHedgingInstrumentsDetails_2" xlink:type="simple" xlink:href="rcl-20260630.xsd#FairValueMeasurementsandDerivativeInstrumentsScheduleofEffectofDerivativeInstrumentsNotDesignatedasCashFlowHedgingInstrumentsDetails_2"/>
  <link:definitionLink xlink:role="http://www.royalcaribbean.com/role/FairValueMeasurementsandDerivativeInstrumentsScheduleofEffectofDerivativeInstrumentsNotDesignatedasCashFlowHedgingInstrumentsDetails_2" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeLineItems_019f14d5-2463-7fd8-bdd2-1d9c77a8fa94" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeTable_019f14d5-2463-764a-9fc6-4078dc238e5d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DerivativeLineItems_019f14d5-2463-7fd8-bdd2-1d9c77a8fa94" xlink:to="loc_us-gaap_DerivativeTable_019f14d5-2463-764a-9fc6-4078dc238e5d" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentRiskAxis_019f14d5-2463-737d-9b65-b6d3171c26cc" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeInstrumentRiskAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DerivativeTable_019f14d5-2463-764a-9fc6-4078dc238e5d" xlink:to="loc_us-gaap_DerivativeInstrumentRiskAxis_019f14d5-2463-737d-9b65-b6d3171c26cc" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_019f14d5-2463-737d-9b65-b6d3171c26cc_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_019f14d5-2463-737d-9b65-b6d3171c26cc" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_019f14d5-2463-737d-9b65-b6d3171c26cc_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_019f14d5-2463-79a7-8902-e1a2395d3a9e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_019f14d5-2463-737d-9b65-b6d3171c26cc" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_019f14d5-2463-79a7-8902-e1a2395d3a9e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ForeignExchangeContractMember_019f14d5-2463-78fe-bf8e-c0f0fd916eab" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ForeignExchangeContractMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_019f14d5-2463-79a7-8902-e1a2395d3a9e" xlink:to="loc_us-gaap_ForeignExchangeContractMember_019f14d5-2463-78fe-bf8e-c0f0fd916eab" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommodityContractMember_019f1f7d-3bda-7cd0-a721-99fb4e0ab95d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommodityContractMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_019f14d5-2463-79a7-8902-e1a2395d3a9e" xlink:to="loc_us-gaap_CommodityContractMember_019f1f7d-3bda-7cd0-a721-99fb4e0ab95d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet_019f14d5-2463-7fdb-88a7-742f8d1c8c83" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeLineItems_019f14d5-2463-7fd8-bdd2-1d9c77a8fa94" xlink:to="loc_us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet_019f14d5-2463-7fdb-88a7-742f8d1c8c83" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://fasb.org/srt/role/srt-eedm/ExtensibleEnumerationLists" xlink:type="simple" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-roles-2026.xsd#eedm1"/>
  <link:definitionLink xlink:role="http://fasb.org/srt/role/srt-eedm/ExtensibleEnumerationLists" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsAbstract" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AssetsAbstract"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeAssetsCurrent" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeAssetsCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract" xlink:to="loc_us-gaap_DerivativeAssetsCurrent" xlink:type="arc" order="101"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesAbstract" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LiabilitiesAbstract"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeLiabilitiesCurrent" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeLiabilitiesCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAbstract" xlink:to="loc_us-gaap_DerivativeLiabilitiesCurrent" xlink:type="arc" order="31"/>
  </link:definitionLink>
</link:linkbase>
