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

<!--XBRL Document Created with the Workiva Platform-->
<!--Copyright 2026 Workiva-->
<!--r:019f189b-ce13-7858-8916-3372e09a6b61,g:f3b81155-8a36-4174-aacf-bc39623109e2-->
<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" xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd">
  <link:arcroleRef arcroleURI="https://xbrl.org/2023/arcrole/summation-item" xlink:type="simple" xlink:href="https://www.xbrl.org/2023/calculation-1.1.xsd#summation-item"/>
  <link:roleRef roleURI="http://tronox.com/role/CONDENSEDCONSOLIDATEDSTATEMENTSOFOPERATIONS" xlink:type="simple" xlink:href="trox-20260630.xsd#CONDENSEDCONSOLIDATEDSTATEMENTSOFOPERATIONS"/>
  <link:calculationLink xlink:role="http://tronox.com/role/CONDENSEDCONSOLIDATEDSTATEMENTSOFOPERATIONS" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProfitLoss_019f189b-d034-78b8-8e46-9fb4ba9b9df0" 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_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_019f189b-d034-73ee-b919-7cee329bda7d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_ProfitLoss_019f189b-d034-78b8-8e46-9fb4ba9b9df0" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_019f189b-d034-73ee-b919-7cee329bda7d" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxExpenseBenefit_019f189b-d034-7e13-a69f-783dfe7e4eaf" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncomeTaxExpenseBenefit"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_ProfitLoss_019f189b-d034-78b8-8e46-9fb4ba9b9df0" xlink:to="loc_us-gaap_IncomeTaxExpenseBenefit_019f189b-d034-7e13-a69f-783dfe7e4eaf" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_019f189b-d034-7912-80e8-4cb33970e08a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NetIncomeLoss"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLossAttributableToNoncontrollingInterest_019f189b-d034-7879-aa70-82feb0f94f53" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NetIncomeLossAttributableToNoncontrollingInterest"/>
    <link:calculationArc order="1" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetIncomeLoss_019f189b-d034-7912-80e8-4cb33970e08a" xlink:to="loc_us-gaap_NetIncomeLossAttributableToNoncontrollingInterest_019f189b-d034-7879-aa70-82feb0f94f53" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProfitLoss_019f189b-d034-796f-a98d-ceb5ce74156b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ProfitLoss"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetIncomeLoss_019f189b-d034-7912-80e8-4cb33970e08a" xlink:to="loc_us-gaap_ProfitLoss_019f189b-d034-796f-a98d-ceb5ce74156b" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GrossProfit_019f189b-d034-7b27-9108-0a182f6f0a23" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_GrossProfit"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_019f189b-d034-71c2-bdbc-d7252bc61d4d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_GrossProfit_019f189b-d034-7b27-9108-0a182f6f0a23" xlink:to="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_019f189b-d034-71c2-bdbc-d7252bc61d4d" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherCostOfOperatingRevenue_019f189b-d034-7be5-b7bc-904783099c95" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherCostOfOperatingRevenue"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_GrossProfit_019f189b-d034-7b27-9108-0a182f6f0a23" xlink:to="loc_us-gaap_OtherCostOfOperatingRevenue_019f189b-d034-7be5-b7bc-904783099c95" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingIncomeLoss_019f189b-d034-791b-943f-4dbc8beddb5c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OperatingIncomeLoss"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringCharges_019f189b-d034-7525-b0dd-e1138dbebfbd" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestructuringCharges"/>
    <link:calculationArc order="1" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingIncomeLoss_019f189b-d034-791b-943f-4dbc8beddb5c" xlink:to="loc_us-gaap_RestructuringCharges_019f189b-d034-7525-b0dd-e1138dbebfbd" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GrossProfit_019f189b-d034-7dd1-bcff-d6507e017ec4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_GrossProfit"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingIncomeLoss_019f189b-d034-791b-943f-4dbc8beddb5c" xlink:to="loc_us-gaap_GrossProfit_019f189b-d034-7dd1-bcff-d6507e017ec4" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SellingGeneralAndAdministrativeExpense_019f189b-d034-7567-afd2-bc8a79231861" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SellingGeneralAndAdministrativeExpense"/>
    <link:calculationArc order="3" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingIncomeLoss_019f189b-d034-791b-943f-4dbc8beddb5c" xlink:to="loc_us-gaap_SellingGeneralAndAdministrativeExpense_019f189b-d034-7567-afd2-bc8a79231861" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_019f189b-d034-7ccc-bf5a-5a2118a670c4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestExpenseNonoperating_019f189b-d034-73e7-937e-05ff8d3d41e6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InterestExpenseNonoperating"/>
    <link:calculationArc order="1" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_019f189b-d034-7ccc-bf5a-5a2118a670c4" xlink:to="loc_us-gaap_InterestExpenseNonoperating_019f189b-d034-73e7-937e-05ff8d3d41e6" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestIncomeOperating_019f189b-d034-7e07-acdf-6946dcf1e28b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InterestIncomeOperating"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_019f189b-d034-7ccc-bf5a-5a2118a670c4" xlink:to="loc_us-gaap_InterestIncomeOperating_019f189b-d034-7e07-acdf-6946dcf1e28b" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingIncomeLoss_019f189b-d034-7599-9bb8-750de12f7b4f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OperatingIncomeLoss"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_019f189b-d034-7ccc-bf5a-5a2118a670c4" xlink:to="loc_us-gaap_OperatingIncomeLoss_019f189b-d034-7599-9bb8-750de12f7b4f" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherNonoperatingIncomeExpense_019f189b-d034-757c-bb5d-9e9bab34e439" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherNonoperatingIncomeExpense"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_019f189b-d034-7ccc-bf5a-5a2118a670c4" xlink:to="loc_us-gaap_OtherNonoperatingIncomeExpense_019f189b-d034-757c-bb5d-9e9bab34e439" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://tronox.com/role/CONDENSEDCONSOLIDATEDSTATEMENTSOFCOMPREHENSIVELOSS" xlink:type="simple" xlink:href="trox-20260630.xsd#CONDENSEDCONSOLIDATEDSTATEMENTSOFCOMPREHENSIVELOSS"/>
  <link:calculationLink xlink:role="http://tronox.com/role/CONDENSEDCONSOLIDATEDSTATEMENTSOFCOMPREHENSIVELOSS" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest_019f189b-d034-72fe-9ca8-b94815492c51" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_019f189b-d034-7549-b65f-7e7d55e4e467" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTax"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest_019f189b-d034-72fe-9ca8-b94815492c51" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_019f189b-d034-7549-b65f-7e7d55e4e467" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProfitLoss_019f189b-d034-7219-870f-9c262ed8cfae" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ProfitLoss"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest_019f189b-d034-72fe-9ca8-b94815492c51" xlink:to="loc_us-gaap_ProfitLoss_019f189b-d034-7219-870f-9c262ed8cfae" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_019f189b-d034-7315-a961-d85b7c68fee3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTax"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax_019f189b-d034-7d00-b789-9a015c522400" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_019f189b-d034-7315-a961-d85b7c68fee3" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax_019f189b-d034-7d00-b789-9a015c522400" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax_019f189b-d034-731e-bfa9-357ca8fe3b9a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_019f189b-d034-7315-a961-d85b7c68fee3" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax_019f189b-d034-731e-bfa9-357ca8fe3b9a" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax_019fb3e0-c0fb-73d7-b505-fafa88a785ab" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax"/>
    <link:calculationArc order="3" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_019f189b-d034-7315-a961-d85b7c68fee3" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax_019fb3e0-c0fb-73d7-b505-fafa88a785ab" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax_019fb3e0-c0fb-7a56-b7f8-166814f3ccdc" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_019f189b-d034-7315-a961-d85b7c68fee3" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax_019fb3e0-c0fb-7a56-b7f8-166814f3ccdc" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest_019f189b-d034-7554-a0b6-32249937896b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToNoncontrollingInterest_019f189b-d034-74d2-b4ae-5e9c0c66479a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToNoncontrollingInterest"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest_019f189b-d034-7554-a0b6-32249937896b" xlink:to="loc_us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToNoncontrollingInterest_019f189b-d034-74d2-b4ae-5e9c0c66479a" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLossAttributableToNoncontrollingInterest_019f189b-d034-71b0-bb82-8fd843131fd5" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NetIncomeLossAttributableToNoncontrollingInterest"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest_019f189b-d034-7554-a0b6-32249937896b" xlink:to="loc_us-gaap_NetIncomeLossAttributableToNoncontrollingInterest_019f189b-d034-71b0-bb82-8fd843131fd5" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ComprehensiveIncomeNetOfTax_019f189b-d034-7af7-a526-4ddd7d88c675" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ComprehensiveIncomeNetOfTax"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest_019f189b-d034-7894-9dc8-6c686b043fd5" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest"/>
    <link:calculationArc order="1" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_ComprehensiveIncomeNetOfTax_019f189b-d034-7af7-a526-4ddd7d88c675" xlink:to="loc_us-gaap_ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest_019f189b-d034-7894-9dc8-6c686b043fd5" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest_019f189b-d034-7d81-b4d6-9a93f0f96e9e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_ComprehensiveIncomeNetOfTax_019f189b-d034-7af7-a526-4ddd7d88c675" xlink:to="loc_us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest_019f189b-d034-7d81-b4d6-9a93f0f96e9e" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax_019f189b-d034-7579-bf30-2bdeef724ed8" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax_019f189b-d034-7354-84e4-fe7f46f6d268" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax"/>
    <link:calculationArc order="1" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax_019f189b-d034-7579-bf30-2bdeef724ed8" xlink:to="loc_us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax_019f189b-d034-7354-84e4-fe7f46f6d268" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax_019f189b-d034-7b65-9b02-319460f5ec6d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax_019f189b-d034-7579-bf30-2bdeef724ed8" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax_019f189b-d034-7b65-9b02-319460f5ec6d" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://tronox.com/role/CONDENSEDCONSOLIDATEDBALANCESHEETS" xlink:type="simple" xlink:href="trox-20260630.xsd#CONDENSEDCONSOLIDATEDBALANCESHEETS"/>
  <link:calculationLink xlink:role="http://tronox.com/role/CONDENSEDCONSOLIDATEDBALANCESHEETS" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesAndStockholdersEquity_019f189b-d034-7136-ac7d-44e5d3e7efc8" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LiabilitiesAndStockholdersEquity"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Liabilities_019f189b-d034-7574-90ed-410cfcf34a1d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_Liabilities"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquity_019f189b-d034-7136-ac7d-44e5d3e7efc8" xlink:to="loc_us-gaap_Liabilities_019f189b-d034-7574-90ed-410cfcf34a1d" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_019f189b-d034-748b-a2e7-a3fb3b583b80" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquity_019f189b-d034-7136-ac7d-44e5d3e7efc8" xlink:to="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_019f189b-d034-748b-a2e7-a3fb3b583b80" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommitmentsAndContingencies_019f189b-d034-7b8c-a820-9ca172909e4a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommitmentsAndContingencies"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquity_019f189b-d034-7136-ac7d-44e5d3e7efc8" xlink:to="loc_us-gaap_CommitmentsAndContingencies_019f189b-d034-7b8c-a820-9ca172909e4a" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Liabilities_019f189b-d034-777c-885e-c178ce7c46b7" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_Liabilities"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesCurrent_019f189b-d034-7b4d-b33f-2528f227134d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LiabilitiesCurrent"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities_019f189b-d034-777c-885e-c178ce7c46b7" xlink:to="loc_us-gaap_LiabilitiesCurrent_019f189b-d034-7b4d-b33f-2528f227134d" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtAndCapitalLeaseObligations_019f189b-d034-71cf-9c16-d4edc7d36c77" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongTermDebtAndCapitalLeaseObligations"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities_019f189b-d034-777c-885e-c178ce7c46b7" xlink:to="loc_us-gaap_LongTermDebtAndCapitalLeaseObligations_019f189b-d034-71cf-9c16-d4edc7d36c77" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent_019f189b-d034-79d4-b155-572dbf625f85" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities_019f189b-d034-777c-885e-c178ce7c46b7" xlink:to="loc_us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent_019f189b-d034-79d4-b155-572dbf625f85" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetRetirementObligationsNoncurrent_019f189b-d034-7158-afb0-c55d63cbb390" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AssetRetirementObligationsNoncurrent"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities_019f189b-d034-777c-885e-c178ce7c46b7" xlink:to="loc_us-gaap_AssetRetirementObligationsNoncurrent_019f189b-d034-7158-afb0-c55d63cbb390" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccruedEnvironmentalLossContingenciesNoncurrent_019f189b-d034-75a4-8855-64e889eb0d14" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccruedEnvironmentalLossContingenciesNoncurrent"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities_019f189b-d034-777c-885e-c178ce7c46b7" xlink:to="loc_us-gaap_AccruedEnvironmentalLossContingenciesNoncurrent_019f189b-d034-75a4-8855-64e889eb0d14" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseLiabilityNoncurrent_019f189b-d034-7b41-a471-ea878485af37" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OperatingLeaseLiabilityNoncurrent"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities_019f189b-d034-777c-885e-c178ce7c46b7" xlink:to="loc_us-gaap_OperatingLeaseLiabilityNoncurrent_019f189b-d034-7b41-a471-ea878485af37" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredIncomeTaxLiabilitiesNet_019f189b-d034-7f6c-87ab-173ab25f7636" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DeferredIncomeTaxLiabilitiesNet"/>
    <link:calculationArc order="7" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities_019f189b-d034-777c-885e-c178ce7c46b7" xlink:to="loc_us-gaap_DeferredIncomeTaxLiabilitiesNet_019f189b-d034-7f6c-87ab-173ab25f7636" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherLiabilitiesNoncurrent_019f189b-d034-7ce7-acca-bfd495fadb83" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherLiabilitiesNoncurrent"/>
    <link:calculationArc order="8" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities_019f189b-d034-777c-885e-c178ce7c46b7" xlink:to="loc_us-gaap_OtherLiabilitiesNoncurrent_019f189b-d034-7ce7-acca-bfd495fadb83" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_019f189b-d034-74a9-b728-5922e873f1d6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquity_019f189b-d034-708a-8df4-2348fd4ee85b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockholdersEquity"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_019f189b-d034-74a9-b728-5922e873f1d6" xlink:to="loc_us-gaap_StockholdersEquity_019f189b-d034-708a-8df4-2348fd4ee85b" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MinorityInterest_019f189b-d034-7012-80d5-1a3f5bb40582" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_MinorityInterest"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_019f189b-d034-74a9-b728-5922e873f1d6" xlink:to="loc_us-gaap_MinorityInterest_019f189b-d034-7012-80d5-1a3f5bb40582" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsCurrent_019f189b-d034-77c6-a901-c18e445999e8" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AssetsCurrent"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxesReceivable_019f189b-d034-7b2a-b021-34e569267401" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncomeTaxesReceivable"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsCurrent_019f189b-d034-77c6-a901-c18e445999e8" xlink:to="loc_us-gaap_IncomeTaxesReceivable_019f189b-d034-7b2a-b021-34e569267401" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_019f189b-d034-70f8-8300-446d3bcec664" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CashAndCashEquivalentsAtCarryingValue"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsCurrent_019f189b-d034-77c6-a901-c18e445999e8" xlink:to="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_019f189b-d034-70f8-8300-446d3bcec664" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InventoryNet_019f189b-d034-7a37-9f3c-9052db0d6453" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InventoryNet"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsCurrent_019f189b-d034-77c6-a901-c18e445999e8" xlink:to="loc_us-gaap_InventoryNet_019f189b-d034-7a37-9f3c-9052db0d6453" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsReceivableNetCurrent_019f189b-d034-76b2-ac36-e27a01cc7abd" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccountsReceivableNetCurrent"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsCurrent_019f189b-d034-77c6-a901-c18e445999e8" xlink:to="loc_us-gaap_AccountsReceivableNetCurrent_019f189b-d034-76b2-ac36-e27a01cc7abd" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PrepaidExpenseAndOtherAssetsCurrent_019f189b-d034-731f-8226-a6814b3295c3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PrepaidExpenseAndOtherAssetsCurrent"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsCurrent_019f189b-d034-77c6-a901-c18e445999e8" xlink:to="loc_us-gaap_PrepaidExpenseAndOtherAssetsCurrent_019f189b-d034-731f-8226-a6814b3295c3" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestrictedCashAndCashEquivalentsAtCarryingValue_019f189b-d034-7d2a-9373-f2b79e8384ba" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestrictedCashAndCashEquivalentsAtCarryingValue"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsCurrent_019f189b-d034-77c6-a901-c18e445999e8" xlink:to="loc_us-gaap_RestrictedCashAndCashEquivalentsAtCarryingValue_019f189b-d034-7d2a-9373-f2b79e8384ba" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Assets_019f189b-d034-7c74-be3a-891b12369c34" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_Assets"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseRightOfUseAsset_019f189b-d034-73e4-abdf-3c059932bdc2" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OperatingLeaseRightOfUseAsset"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_019f189b-d034-7c74-be3a-891b12369c34" xlink:to="loc_us-gaap_OperatingLeaseRightOfUseAsset_019f189b-d034-73e4-abdf-3c059932bdc2" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherAssetsNoncurrent_019f189b-d034-708f-b127-c757bbd03e01" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherAssetsNoncurrent"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_019f189b-d034-7c74-be3a-891b12369c34" xlink:to="loc_us-gaap_OtherAssetsNoncurrent_019f189b-d034-708f-b127-c757bbd03e01" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsCurrent_019f189b-d034-75df-9a2b-e5c031f1891e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AssetsCurrent"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_019f189b-d034-7c74-be3a-891b12369c34" xlink:to="loc_us-gaap_AssetsCurrent_019f189b-d034-75df-9a2b-e5c031f1891e" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MineralPropertiesNet_019f189b-d034-7301-a603-add53d555092" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_MineralPropertiesNet"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_019f189b-d034-7c74-be3a-891b12369c34" xlink:to="loc_us-gaap_MineralPropertiesNet_019f189b-d034-7301-a603-add53d555092" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentNet_019f189b-d034-7e79-b6db-d146317bf067" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PropertyPlantAndEquipmentNet"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_019f189b-d034-7c74-be3a-891b12369c34" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentNet_019f189b-d034-7e79-b6db-d146317bf067" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsNet_019f189b-d034-7a10-8a90-ae3c551eb6aa" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FiniteLivedIntangibleAssetsNet"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_019f189b-d034-7c74-be3a-891b12369c34" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsNet_019f189b-d034-7a10-8a90-ae3c551eb6aa" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredIncomeTaxAssetsNet_019f189b-d034-7038-875b-49102fb5534b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DeferredIncomeTaxAssetsNet"/>
    <link:calculationArc order="7" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_019f189b-d034-7c74-be3a-891b12369c34" xlink:to="loc_us-gaap_DeferredIncomeTaxAssetsNet_019f189b-d034-7038-875b-49102fb5534b" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquity_019f189b-d034-7713-9aac-7c911bdba100" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockholdersEquity"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockValue_019f189b-d034-778c-b363-387358c3ae90" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommonStockValue"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquity_019f189b-d034-7713-9aac-7c911bdba100" xlink:to="loc_us-gaap_CommonStockValue_019f189b-d034-778c-b363-387358c3ae90" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdditionalPaidInCapitalCommonStock_019f189b-d034-700a-a39e-156df1419c54" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AdditionalPaidInCapitalCommonStock"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquity_019f189b-d034-7713-9aac-7c911bdba100" xlink:to="loc_us-gaap_AdditionalPaidInCapitalCommonStock_019f189b-d034-700a-a39e-156df1419c54" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetainedEarningsAccumulatedDeficit_019f189b-d034-70c0-a62f-24f25a2f9393" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RetainedEarningsAccumulatedDeficit"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquity_019f189b-d034-7713-9aac-7c911bdba100" xlink:to="loc_us-gaap_RetainedEarningsAccumulatedDeficit_019f189b-d034-70c0-a62f-24f25a2f9393" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_019f189b-d034-7938-8b60-72afc7af07fc" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquity_019f189b-d034-7713-9aac-7c911bdba100" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_019f189b-d034-7938-8b60-72afc7af07fc" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesCurrent_019f189b-d034-7207-b67e-1146280ffeac" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LiabilitiesCurrent"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsPayableCurrent_019f189b-d034-7472-84a8-5dec970a8e4b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccountsPayableCurrent"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesCurrent_019f189b-d034-7207-b67e-1146280ffeac" xlink:to="loc_us-gaap_AccountsPayableCurrent_019f189b-d034-7472-84a8-5dec970a8e4b" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccruedLiabilitiesCurrent_019f189b-d034-763a-b995-077023805099" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccruedLiabilitiesCurrent"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesCurrent_019f189b-d034-7207-b67e-1146280ffeac" xlink:to="loc_us-gaap_AccruedLiabilitiesCurrent_019f189b-d034-763a-b995-077023805099" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseLiabilityCurrent_019f189b-d034-7e32-84e9-f05cbc588209" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OperatingLeaseLiabilityCurrent"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesCurrent_019f189b-d034-7207-b67e-1146280ffeac" xlink:to="loc_us-gaap_OperatingLeaseLiabilityCurrent_019f189b-d034-7e32-84e9-f05cbc588209" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_trox_InventoryFinancingArrangementCurrent_019f189b-d034-795a-b2c9-d51d7e3a6500" xlink:href="trox-20260630.xsd#trox_InventoryFinancingArrangementCurrent"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesCurrent_019f189b-d034-7207-b67e-1146280ffeac" xlink:to="loc_trox_InventoryFinancingArrangementCurrent_019f189b-d034-795a-b2c9-d51d7e3a6500" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShortTermBorrowings_019f189b-d034-7789-943b-b4d65895a68f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShortTermBorrowings"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesCurrent_019f189b-d034-7207-b67e-1146280ffeac" xlink:to="loc_us-gaap_ShortTermBorrowings_019f189b-d034-7789-943b-b4d65895a68f" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtCurrent_019f189b-d034-7c18-873a-a53e58d69131" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongTermDebtCurrent"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesCurrent_019f189b-d034-7207-b67e-1146280ffeac" xlink:to="loc_us-gaap_LongTermDebtCurrent_019f189b-d034-7c18-873a-a53e58d69131" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccruedIncomeTaxesCurrent_019f189b-d034-7e53-8e23-1044df864408" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccruedIncomeTaxesCurrent"/>
    <link:calculationArc order="7" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesCurrent_019f189b-d034-7207-b67e-1146280ffeac" xlink:to="loc_us-gaap_AccruedIncomeTaxesCurrent_019f189b-d034-7e53-8e23-1044df864408" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://tronox.com/role/CONDENSEDCONSOLIDATEDSTATEMENTSOFCASHFLOWS" xlink:type="simple" xlink:href="trox-20260630.xsd#CONDENSEDCONSOLIDATEDSTATEMENTSOFCASHFLOWS"/>
  <link:calculationLink xlink:role="http://tronox.com/role/CONDENSEDCONSOLIDATEDSTATEMENTSOFCASHFLOWS" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_019f189b-d034-73b1-8d6c-d29a975f6a98" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivities"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsToAcquireProductiveAssets_019f189b-d034-7c94-81d4-9b663e3df51a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PaymentsToAcquireProductiveAssets"/>
    <link:calculationArc order="1" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_019f189b-d034-73b1-8d6c-d29a975f6a98" xlink:to="loc_us-gaap_PaymentsToAcquireProductiveAssets_019f189b-d034-7c94-81d4-9b663e3df51a" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromSaleOfLoansReceivable_019f189b-d034-772b-bc2f-86a85cefd99a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ProceedsFromSaleOfLoansReceivable"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_019f189b-d034-73b1-8d6c-d29a975f6a98" xlink:to="loc_us-gaap_ProceedsFromSaleOfLoansReceivable_019f189b-d034-772b-bc2f-86a85cefd99a" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromSalesOfAssetsInvestingActivities_019fb3df-0726-7393-8afe-1ef20a574c8a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ProceedsFromSalesOfAssetsInvestingActivities"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_019f189b-d034-73b1-8d6c-d29a975f6a98" xlink:to="loc_us-gaap_ProceedsFromSalesOfAssetsInvestingActivities_019fb3df-0726-7393-8afe-1ef20a574c8a" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019f189b-d034-7601-8ec8-b5c61f04d213" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivities"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProfitLoss_019f189b-d034-71d9-8378-e475eb90d6e2" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ProfitLoss"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019f189b-d034-7601-8ec8-b5c61f04d213" xlink:to="loc_us-gaap_ProfitLoss_019f189b-d034-71d9-8378-e475eb90d6e2" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DepreciationDepletionAndAmortization_019f189b-d034-746c-8e15-92c85da2670a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DepreciationDepletionAndAmortization"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019f189b-d034-7601-8ec8-b5c61f04d213" xlink:to="loc_us-gaap_DepreciationDepletionAndAmortization_019f189b-d034-746c-8e15-92c85da2670a" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredIncomeTaxExpenseBenefit_019f189b-d034-7bcd-92a1-81c26f9c25fa" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DeferredIncomeTaxExpenseBenefit"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019f189b-d034-7601-8ec8-b5c61f04d213" xlink:to="loc_us-gaap_DeferredIncomeTaxExpenseBenefit_019f189b-d034-7bcd-92a1-81c26f9c25fa" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AllocatedShareBasedCompensationExpense_019f189b-d034-730f-9884-80b0318621bd" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AllocatedShareBasedCompensationExpense"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019f189b-d034-7601-8ec8-b5c61f04d213" xlink:to="loc_us-gaap_AllocatedShareBasedCompensationExpense_019f189b-d034-730f-9884-80b0318621bd" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AmortizationOfFinancingCostsAndDiscounts_019f189b-d034-7d08-834d-cf1e47bb157e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AmortizationOfFinancingCostsAndDiscounts"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019f189b-d034-7601-8ec8-b5c61f04d213" xlink:to="loc_us-gaap_AmortizationOfFinancingCostsAndDiscounts_019f189b-d034-7d08-834d-cf1e47bb157e" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringCharges_019f189b-d034-7295-bd9a-61f0c2931294" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestructuringCharges"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019f189b-d034-7601-8ec8-b5c61f04d213" xlink:to="loc_us-gaap_RestructuringCharges_019f189b-d034-7295-bd9a-61f0c2931294" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherNoncashIncomeExpense_019f189b-d034-7043-a43f-df602b07c297" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherNoncashIncomeExpense"/>
    <link:calculationArc order="7" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019f189b-d034-7601-8ec8-b5c61f04d213" xlink:to="loc_us-gaap_OtherNoncashIncomeExpense_019f189b-d034-7043-a43f-df602b07c297" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInAccountsReceivable_019f189b-d034-7ef1-84f9-797afcd5179f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncreaseDecreaseInAccountsReceivable"/>
    <link:calculationArc order="8" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019f189b-d034-7601-8ec8-b5c61f04d213" xlink:to="loc_us-gaap_IncreaseDecreaseInAccountsReceivable_019f189b-d034-7ef1-84f9-797afcd5179f" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInInventories_019f189b-d034-7ca6-aa51-1576d9d00c63" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncreaseDecreaseInInventories"/>
    <link:calculationArc order="9" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019f189b-d034-7601-8ec8-b5c61f04d213" xlink:to="loc_us-gaap_IncreaseDecreaseInInventories_019f189b-d034-7ca6-aa51-1576d9d00c63" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets_019f189b-d034-773e-96d5-d9ca04724580" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets"/>
    <link:calculationArc order="10" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019f189b-d034-7601-8ec8-b5c61f04d213" xlink:to="loc_us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets_019f189b-d034-773e-96d5-d9ca04724580" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsForRestructuring_019f189b-d034-70e6-980d-7b420bf5bb00" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PaymentsForRestructuring"/>
    <link:calculationArc order="11" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019f189b-d034-7601-8ec8-b5c61f04d213" xlink:to="loc_us-gaap_PaymentsForRestructuring_019f189b-d034-70e6-980d-7b420bf5bb00" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities_019f189b-d034-799c-8425-42c4b40d09d7" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities"/>
    <link:calculationArc order="12" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019f189b-d034-7601-8ec8-b5c61f04d213" xlink:to="loc_us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities_019f189b-d034-799c-8425-42c4b40d09d7" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInIncomeTaxesPayableNetOfIncomeTaxesReceivable_019f189b-d034-79a6-a505-2432d2a1ed26" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncreaseDecreaseInIncomeTaxesPayableNetOfIncomeTaxesReceivable"/>
    <link:calculationArc order="13" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019f189b-d034-7601-8ec8-b5c61f04d213" xlink:to="loc_us-gaap_IncreaseDecreaseInIncomeTaxesPayableNetOfIncomeTaxesReceivable_019f189b-d034-79a6-a505-2432d2a1ed26" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInOtherNoncurrentAssetsAndLiabilitiesNet_019f189b-d034-7c6c-bba7-1a20585bc153" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncreaseDecreaseInOtherNoncurrentAssetsAndLiabilitiesNet"/>
    <link:calculationArc order="14" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019f189b-d034-7601-8ec8-b5c61f04d213" xlink:to="loc_us-gaap_IncreaseDecreaseInOtherNoncurrentAssetsAndLiabilitiesNet_019f189b-d034-7c6c-bba7-1a20585bc153" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_019f189b-d034-77b4-946a-f0d65035fbe1" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019f189b-d034-73f8-a7d7-041b28c21925" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivities"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_019f189b-d034-77b4-946a-f0d65035fbe1" xlink:to="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019f189b-d034-73f8-a7d7-041b28c21925" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_019f189b-d034-725a-b307-f56f3ea5c94e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivities"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_019f189b-d034-77b4-946a-f0d65035fbe1" xlink:to="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_019f189b-d034-725a-b307-f56f3ea5c94e" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_019f189b-d034-7328-b0a4-ea4f12655af8" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivities"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_019f189b-d034-77b4-946a-f0d65035fbe1" xlink:to="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_019f189b-d034-7328-b0a4-ea4f12655af8" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_019f189b-d034-7031-bad4-9cdbb895b639" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_019f189b-d034-77b4-946a-f0d65035fbe1" xlink:to="loc_us-gaap_EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_019f189b-d034-7031-bad4-9cdbb895b639" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_019f189b-d034-7584-bd26-fc1da3ea451e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivities"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RepaymentsOfShortTermDebt_019f189b-d034-793c-994c-e5b19da0222c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RepaymentsOfShortTermDebt"/>
    <link:calculationArc order="1" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_019f189b-d034-7584-bd26-fc1da3ea451e" xlink:to="loc_us-gaap_RepaymentsOfShortTermDebt_019f189b-d034-793c-994c-e5b19da0222c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RepaymentsOfLongTermDebt_019f189b-d034-7cf0-9e62-e6d642312fd4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RepaymentsOfLongTermDebt"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_019f189b-d034-7584-bd26-fc1da3ea451e" xlink:to="loc_us-gaap_RepaymentsOfLongTermDebt_019f189b-d034-7cf0-9e62-e6d642312fd4" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_trox_RepaymentsOfInventoryFinancingArrangement_019f189b-d034-7d59-90bd-1e140fed8282" xlink:href="trox-20260630.xsd#trox_RepaymentsOfInventoryFinancingArrangement"/>
    <link:calculationArc order="3" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_019f189b-d034-7584-bd26-fc1da3ea451e" xlink:to="loc_trox_RepaymentsOfInventoryFinancingArrangement_019f189b-d034-7d59-90bd-1e140fed8282" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_trox_ProceedsFromSaleAndLeasebackTransaction_019f189b-d034-768f-8e1b-c0cbf246f416" xlink:href="trox-20260630.xsd#trox_ProceedsFromSaleAndLeasebackTransaction"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_019f189b-d034-7584-bd26-fc1da3ea451e" xlink:to="loc_trox_ProceedsFromSaleAndLeasebackTransaction_019f189b-d034-768f-8e1b-c0cbf246f416" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromShortTermDebt_019f189b-d034-76b6-ade5-ebcd4633032e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ProceedsFromShortTermDebt"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_019f189b-d034-7584-bd26-fc1da3ea451e" xlink:to="loc_us-gaap_ProceedsFromShortTermDebt_019f189b-d034-76b6-ade5-ebcd4633032e" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_trox_ProceedsFromInventoryFinancingArrangement_019f189b-d034-7529-adee-e0492394caac" xlink:href="trox-20260630.xsd#trox_ProceedsFromInventoryFinancingArrangement"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_019f189b-d034-7584-bd26-fc1da3ea451e" xlink:to="loc_trox_ProceedsFromInventoryFinancingArrangement_019f189b-d034-7529-adee-e0492394caac" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsOfFinancingCosts_019f7f9c-d1bd-7bf7-a7e8-49e34a7ffefd" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PaymentsOfFinancingCosts"/>
    <link:calculationArc order="7" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_019f189b-d034-7584-bd26-fc1da3ea451e" xlink:to="loc_us-gaap_PaymentsOfFinancingCosts_019f7f9c-d1bd-7bf7-a7e8-49e34a7ffefd" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_trox_PaymentForSaleAndLeasebackTransactionCosts_019f7f9c-d1bd-7544-9a86-071a0e2c0586" xlink:href="trox-20260630.xsd#trox_PaymentForSaleAndLeasebackTransactionCosts"/>
    <link:calculationArc order="8" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_019f189b-d034-7584-bd26-fc1da3ea451e" xlink:to="loc_trox_PaymentForSaleAndLeasebackTransactionCosts_019f7f9c-d1bd-7544-9a86-071a0e2c0586" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsOfDividends_019f7f9c-d1bd-7d78-beb1-bb7c2f02f698" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PaymentsOfDividends"/>
    <link:calculationArc order="9" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_019f189b-d034-7584-bd26-fc1da3ea451e" xlink:to="loc_us-gaap_PaymentsOfDividends_019f7f9c-d1bd-7d78-beb1-bb7c2f02f698" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsRelatedToTaxWithholdingForShareBasedCompensation_019f7f9c-d1bd-75ef-8dab-dbaab6cd2237" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PaymentsRelatedToTaxWithholdingForShareBasedCompensation"/>
    <link:calculationArc order="10" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_019f189b-d034-7584-bd26-fc1da3ea451e" xlink:to="loc_us-gaap_PaymentsRelatedToTaxWithholdingForShareBasedCompensation_019f7f9c-d1bd-75ef-8dab-dbaab6cd2237" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://tronox.com/role/RestructuringandOtherChargesScheduleofRestructuringandRelatedCostsDetails" xlink:type="simple" xlink:href="trox-20260630.xsd#RestructuringandOtherChargesScheduleofRestructuringandRelatedCostsDetails"/>
  <link:calculationLink xlink:role="http://tronox.com/role/RestructuringandOtherChargesScheduleofRestructuringandRelatedCostsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringCharges_019f189b-d035-7fd4-9624-520055c82326" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestructuringCharges"/>
    <link:loc xlink:type="locator" xlink:label="loc_trox_RestructuringChargesNonCash_019f189b-d035-7953-b235-733d92783e0c" xlink:href="trox-20260630.xsd#trox_RestructuringChargesNonCash"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_RestructuringCharges_019f189b-d035-7fd4-9624-520055c82326" xlink:to="loc_trox_RestructuringChargesNonCash_019f189b-d035-7953-b235-733d92783e0c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_trox_RestructuringChargesCashCharges_019f189b-d035-71ad-a738-c87afd3181a3" xlink:href="trox-20260630.xsd#trox_RestructuringChargesCashCharges"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_RestructuringCharges_019f189b-d035-7fd4-9624-520055c82326" xlink:to="loc_trox_RestructuringChargesCashCharges_019f189b-d035-71ad-a738-c87afd3181a3" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://tronox.com/role/LossPerShareScheduleofComputationofBasicandDilutedLossPerShareDetails" xlink:type="simple" xlink:href="trox-20260630.xsd#LossPerShareScheduleofComputationofBasicandDilutedLossPerShareDetails"/>
  <link:calculationLink xlink:role="http://tronox.com/role/LossPerShareScheduleofComputationofBasicandDilutedLossPerShareDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic_019f189b-d035-769f-ab99-0847c0802e75" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest_019f189b-d035-7398-8f70-df394e745cb4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic_019f189b-d035-769f-ab99-0847c0802e75" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest_019f189b-d035-7398-8f70-df394e745cb4" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsAttributableToNoncontrollingEntity_019f189b-d035-7fb0-8b0c-a4c9d421de45" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncomeLossFromContinuingOperationsAttributableToNoncontrollingEntity"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic_019f189b-d035-769f-ab99-0847c0802e75" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsAttributableToNoncontrollingEntity_019f189b-d035-7fb0-8b0c-a4c9d421de45" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://tronox.com/role/InventoriesNetScheduleofInventoriesNetDetails" xlink:type="simple" xlink:href="trox-20260630.xsd#InventoriesNetScheduleofInventoriesNetDetails"/>
  <link:calculationLink xlink:role="http://tronox.com/role/InventoriesNetScheduleofInventoriesNetDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InventoryNet_019f189b-d035-7619-baa9-a6f255fec301" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InventoryNet"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InventoryFinishedGoodsNetOfReserves_019f189b-d035-7558-baab-720b290d00eb" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InventoryFinishedGoodsNetOfReserves"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_InventoryNet_019f189b-d035-7619-baa9-a6f255fec301" xlink:to="loc_us-gaap_InventoryFinishedGoodsNetOfReserves_019f189b-d035-7558-baab-720b290d00eb" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InventorySuppliesNetOfReserves_019f189b-d035-7497-8a9a-a0c42c6829c3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InventorySuppliesNetOfReserves"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_InventoryNet_019f189b-d035-7619-baa9-a6f255fec301" xlink:to="loc_us-gaap_InventorySuppliesNetOfReserves_019f189b-d035-7497-8a9a-a0c42c6829c3" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InventoryRawMaterialsNetOfReserves_019f189b-d035-7a61-8d19-5437d90886ba" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InventoryRawMaterialsNetOfReserves"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_InventoryNet_019f189b-d035-7619-baa9-a6f255fec301" xlink:to="loc_us-gaap_InventoryRawMaterialsNetOfReserves_019f189b-d035-7a61-8d19-5437d90886ba" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InventoryWorkInProcessNetOfReserves_019f189b-d035-72e7-a298-d570db179b65" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InventoryWorkInProcessNetOfReserves"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_InventoryNet_019f189b-d035-7619-baa9-a6f255fec301" xlink:to="loc_us-gaap_InventoryWorkInProcessNetOfReserves_019f189b-d035-72e7-a298-d570db179b65" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://tronox.com/role/PropertyPlantandEquipmentNetScheduleofPropertyPlantandEquipmentNetofAccumulatedDepreciationDetails" xlink:type="simple" xlink:href="trox-20260630.xsd#PropertyPlantandEquipmentNetScheduleofPropertyPlantandEquipmentNetofAccumulatedDepreciationDetails"/>
  <link:calculationLink xlink:role="http://tronox.com/role/PropertyPlantandEquipmentNetScheduleofPropertyPlantandEquipmentNetofAccumulatedDepreciationDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentNet_019f189b-d035-754f-b593-d555ec35d647" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PropertyPlantAndEquipmentNet"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_019f189b-d035-7890-bc51-0e3d44f30243" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment"/>
    <link:calculationArc order="1" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentNet_019f189b-d035-754f-b593-d555ec35d647" xlink:to="loc_us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_019f189b-d035-7890-bc51-0e3d44f30243" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentGross_019f189b-d035-7820-b945-a6f095fcf3fd" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PropertyPlantAndEquipmentGross"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentNet_019f189b-d035-754f-b593-d555ec35d647" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentGross_019f189b-d035-7820-b945-a6f095fcf3fd" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://tronox.com/role/MineralLeaseholdsNetDetails" xlink:type="simple" xlink:href="trox-20260630.xsd#MineralLeaseholdsNetDetails"/>
  <link:calculationLink xlink:role="http://tronox.com/role/MineralLeaseholdsNetDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MineralPropertiesNet_019f189b-d035-7fd3-9e16-144fd9e01a0b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_MineralPropertiesNet"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MineralPropertiesGross_019f189b-d035-7c5a-9303-7a467cabc6b0" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_MineralPropertiesGross"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_MineralPropertiesNet_019f189b-d035-7fd3-9e16-144fd9e01a0b" xlink:to="loc_us-gaap_MineralPropertiesGross_019f189b-d035-7c5a-9303-7a467cabc6b0" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MineralPropertiesAccumulatedDepletion_019f189b-d035-79de-b24a-5b91526820f1" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_MineralPropertiesAccumulatedDepletion"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_MineralPropertiesNet_019f189b-d035-7fd3-9e16-144fd9e01a0b" xlink:to="loc_us-gaap_MineralPropertiesAccumulatedDepletion_019f189b-d035-79de-b24a-5b91526820f1" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://tronox.com/role/IntangibleAssetsNetScheduleofIntangibleAssetsNetofAccumulatedAmortizationDetails" xlink:type="simple" xlink:href="trox-20260630.xsd#IntangibleAssetsNetScheduleofIntangibleAssetsNetofAccumulatedAmortizationDetails"/>
  <link:calculationLink xlink:role="http://tronox.com/role/IntangibleAssetsNetScheduleofIntangibleAssetsNetofAccumulatedAmortizationDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsNet_019f189b-d035-75cc-a975-d1b26f9fe032" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FiniteLivedIntangibleAssetsNet"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsGross_019f189b-d035-788d-b2e3-6f12d86b4725" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FiniteLivedIntangibleAssetsGross"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsNet_019f189b-d035-75cc-a975-d1b26f9fe032" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsGross_019f189b-d035-788d-b2e3-6f12d86b4725" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_019f189b-d035-74ae-bad2-c5e05b34fafd" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsNet_019f189b-d035-75cc-a975-d1b26f9fe032" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_019f189b-d035-74ae-bad2-c5e05b34fafd" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://tronox.com/role/BalanceSheetandCashFlowSupplementalInformationScheduleofAccruedLiabilitiesDetails" xlink:type="simple" xlink:href="trox-20260630.xsd#BalanceSheetandCashFlowSupplementalInformationScheduleofAccruedLiabilitiesDetails"/>
  <link:calculationLink xlink:role="http://tronox.com/role/BalanceSheetandCashFlowSupplementalInformationScheduleofAccruedLiabilitiesDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccruedLiabilitiesCurrent_019f189b-d035-74c9-95ca-1168fad28db6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccruedLiabilitiesCurrent"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherAccruedLiabilitiesCurrent_019f189b-d035-706a-ab5a-c363d46d9b9c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherAccruedLiabilitiesCurrent"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AccruedLiabilitiesCurrent_019f189b-d035-74c9-95ca-1168fad28db6" xlink:to="loc_us-gaap_OtherAccruedLiabilitiesCurrent_019f189b-d035-706a-ab5a-c363d46d9b9c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetRetirementObligationCurrent_019f189b-d035-7654-a306-40b6f531b473" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AssetRetirementObligationCurrent"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AccruedLiabilitiesCurrent_019f189b-d035-74c9-95ca-1168fad28db6" xlink:to="loc_us-gaap_AssetRetirementObligationCurrent_019f189b-d035-7654-a306-40b6f531b473" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestPayableCurrent_019f189b-d035-71ae-80a9-af7320e61088" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InterestPayableCurrent"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AccruedLiabilitiesCurrent_019f189b-d035-74c9-95ca-1168fad28db6" xlink:to="loc_us-gaap_InterestPayableCurrent_019f189b-d035-71ae-80a9-af7320e61088" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmployeeRelatedLiabilitiesCurrent_019f189b-d035-7923-a3a1-98484255243d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EmployeeRelatedLiabilitiesCurrent"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AccruedLiabilitiesCurrent_019f189b-d035-74c9-95ca-1168fad28db6" xlink:to="loc_us-gaap_EmployeeRelatedLiabilitiesCurrent_019f189b-d035-7923-a3a1-98484255243d" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccrualForTaxesOtherThanIncomeTaxesCurrent_019f189b-d035-7e21-a4f7-5f24259e9bad" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccrualForTaxesOtherThanIncomeTaxesCurrent"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AccruedLiabilitiesCurrent_019f189b-d035-74c9-95ca-1168fad28db6" xlink:to="loc_us-gaap_AccrualForTaxesOtherThanIncomeTaxesCurrent_019f189b-d035-7e21-a4f7-5f24259e9bad" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccruedMarketingCostsCurrent_019f189b-d035-7b51-a671-f36b823ed28d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccruedMarketingCostsCurrent"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AccruedLiabilitiesCurrent_019f189b-d035-74c9-95ca-1168fad28db6" xlink:to="loc_us-gaap_AccruedMarketingCostsCurrent_019f189b-d035-7b51-a671-f36b823ed28d" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_trox_SaleAndLeasebackObligationCurrent_019f944c-57f5-7b36-9e34-b110967aee13" xlink:href="trox-20260630.xsd#trox_SaleAndLeasebackObligationCurrent"/>
    <link:calculationArc order="7" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AccruedLiabilitiesCurrent_019f189b-d035-74c9-95ca-1168fad28db6" xlink:to="loc_trox_SaleAndLeasebackObligationCurrent_019f944c-57f5-7b36-9e34-b110967aee13" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://tronox.com/role/DebtScheduleofLongtermDebtNetofanUnamortizedDiscountandDebtIssuanceCostsDetails" xlink:type="simple" xlink:href="trox-20260630.xsd#DebtScheduleofLongtermDebtNetofanUnamortizedDiscountandDebtIssuanceCostsDetails"/>
  <link:calculationLink xlink:role="http://tronox.com/role/DebtScheduleofLongtermDebtNetofanUnamortizedDiscountandDebtIssuanceCostsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtAndCapitalLeaseObligationsIncludingCurrentMaturities_019f189b-d035-718e-bcf3-ec3725f1125a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongTermDebtAndCapitalLeaseObligationsIncludingCurrentMaturities"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinanceLeaseLiability_019f189b-d035-7e8d-8339-afee5a5558ca" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinanceLeaseLiability"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_LongTermDebtAndCapitalLeaseObligationsIncludingCurrentMaturities_019f189b-d035-718e-bcf3-ec3725f1125a" xlink:to="loc_us-gaap_FinanceLeaseLiability_019f189b-d035-7e8d-8339-afee5a5558ca" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_trox_LongTermDebtNetOfUnamortizedDiscount_019f189b-d035-7f20-8913-cdf3c715d8c5" xlink:href="trox-20260630.xsd#trox_LongTermDebtNetOfUnamortizedDiscount"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_LongTermDebtAndCapitalLeaseObligationsIncludingCurrentMaturities_019f189b-d035-718e-bcf3-ec3725f1125a" xlink:to="loc_trox_LongTermDebtNetOfUnamortizedDiscount_019f189b-d035-7f20-8913-cdf3c715d8c5" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://tronox.com/role/AssetRetirementObligationsDetails" xlink:type="simple" xlink:href="trox-20260630.xsd#AssetRetirementObligationsDetails"/>
  <link:calculationLink xlink:role="http://tronox.com/role/AssetRetirementObligationsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetRetirementObligation_019f189b-d035-7f36-ad8d-c1a2cccb66b5" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AssetRetirementObligation"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetRetirementObligationCurrent_019f189b-d035-762c-bac1-dccd5cda80f1" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AssetRetirementObligationCurrent"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AssetRetirementObligation_019f189b-d035-7f36-ad8d-c1a2cccb66b5" xlink:to="loc_us-gaap_AssetRetirementObligationCurrent_019f189b-d035-762c-bac1-dccd5cda80f1" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetRetirementObligationsNoncurrent_019f189b-d035-7bb4-9394-1aa7adb73f3e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AssetRetirementObligationsNoncurrent"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AssetRetirementObligation_019f189b-d035-7f36-ad8d-c1a2cccb66b5" xlink:to="loc_us-gaap_AssetRetirementObligationsNoncurrent_019f189b-d035-7bb4-9394-1aa7adb73f3e" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://tronox.com/role/PensionandOtherPostretirementHealthcareBenefitsScheduleofComponentsofNetPeriodicCostAssociatedwithOurUSandForeignPensionPlansDetails" xlink:type="simple" xlink:href="trox-20260630.xsd#PensionandOtherPostretirementHealthcareBenefitsScheduleofComponentsofNetPeriodicCostAssociatedwithOurUSandForeignPensionPlansDetails"/>
  <link:calculationLink xlink:role="http://tronox.com/role/PensionandOtherPostretirementHealthcareBenefitsScheduleofComponentsofNetPeriodicCostAssociatedwithOurUSandForeignPensionPlansDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost_019f189b-d0fe-7c13-9a74-3a27e53a43c8" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanServiceCost_019f189b-d0fe-768e-9d8c-383578f83b99" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DefinedBenefitPlanServiceCost"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost_019f189b-d0fe-7c13-9a74-3a27e53a43c8" xlink:to="loc_us-gaap_DefinedBenefitPlanServiceCost_019f189b-d0fe-768e-9d8c-383578f83b99" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanInterestCost_019f189b-d0fe-7e1f-a46a-a91e24fba56b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DefinedBenefitPlanInterestCost"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost_019f189b-d0fe-7c13-9a74-3a27e53a43c8" xlink:to="loc_us-gaap_DefinedBenefitPlanInterestCost_019f189b-d0fe-7e1f-a46a-a91e24fba56b" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanExpectedReturnOnPlanAssets_019f189b-d0fe-766b-ba08-0029975eb0db" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DefinedBenefitPlanExpectedReturnOnPlanAssets"/>
    <link:calculationArc order="3" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost_019f189b-d0fe-7c13-9a74-3a27e53a43c8" xlink:to="loc_us-gaap_DefinedBenefitPlanExpectedReturnOnPlanAssets_019f189b-d0fe-766b-ba08-0029975eb0db" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanAmortizationOfGainsLosses_019f189b-d0fe-7c3a-9eee-32b7a7ee71ff" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DefinedBenefitPlanAmortizationOfGainsLosses"/>
    <link:calculationArc order="4" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost_019f189b-d0fe-7c13-9a74-3a27e53a43c8" xlink:to="loc_us-gaap_DefinedBenefitPlanAmortizationOfGainsLosses_019f189b-d0fe-7c3a-9eee-32b7a7ee71ff" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://tronox.com/role/RelatedPartiesScheduleofLongTermDebtDetails" xlink:type="simple" xlink:href="trox-20260630.xsd#RelatedPartiesScheduleofLongTermDebtDetails"/>
  <link:calculationLink xlink:role="http://tronox.com/role/RelatedPartiesScheduleofLongTermDebtDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NotesPayable_019f189b-d0fe-7a39-93f3-70dd2ae5fdb7" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NotesPayable"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NotesPayableCurrent_019f189b-d0fe-71cf-9012-24e01ad51505" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NotesPayableCurrent"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NotesPayable_019f189b-d0fe-7a39-93f3-70dd2ae5fdb7" xlink:to="loc_us-gaap_NotesPayableCurrent_019f189b-d0fe-71cf-9012-24e01ad51505" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermNotesPayable_019f189b-d0fe-788d-85f0-a98c0ef0cc6f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongTermNotesPayable"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NotesPayable_019f189b-d0fe-7a39-93f3-70dd2ae5fdb7" xlink:to="loc_us-gaap_LongTermNotesPayable_019f189b-d0fe-788d-85f0-a98c0ef0cc6f" xlink:type="arc"/>
  </link:calculationLink>
</link:linkbase>
