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

<!--XBRL Document Created with the Workiva Platform-->
<!--Copyright 2025 Workiva-->
<!--r:db00bbe1-1b3f-46a9-8fe8-53c0cab1018d,g:7c839fba-93d0-4875-996c-06ffa8b95e35-->
<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:roleRef roleURI="http://www.fticonsulting.com/role/CondensedConsolidatedBalanceSheets" xlink:type="simple" xlink:href="fcn-20250630.xsd#CondensedConsolidatedBalanceSheets"/>
  <link:calculationLink xlink:role="http://www.fticonsulting.com/role/CondensedConsolidatedBalanceSheets" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesAndStockholdersEquity_c546f4da-a237-489c-8b7c-312a7714141b" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LiabilitiesAndStockholdersEquity"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Liabilities_55285e67-2179-4285-87ce-2783c2f4e2c0" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_Liabilities"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquity_c546f4da-a237-489c-8b7c-312a7714141b" xlink:to="loc_us-gaap_Liabilities_55285e67-2179-4285-87ce-2783c2f4e2c0" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommitmentsAndContingencies_c79df62c-826c-4dfb-a372-db89d6e4125d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CommitmentsAndContingencies"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquity_c546f4da-a237-489c-8b7c-312a7714141b" xlink:to="loc_us-gaap_CommitmentsAndContingencies_c79df62c-826c-4dfb-a372-db89d6e4125d" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquity_812336b6-94f1-455b-b123-7147fc0fd45e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StockholdersEquity"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquity_c546f4da-a237-489c-8b7c-312a7714141b" xlink:to="loc_us-gaap_StockholdersEquity_812336b6-94f1-455b-b123-7147fc0fd45e" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesCurrent_ca905c78-21a6-4f93-9c93-0ebf32a72058" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LiabilitiesCurrent"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsPayableAndAccruedLiabilitiesCurrent_0f85663d-4959-48a6-96fe-3a79753ac51b" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AccountsPayableAndAccruedLiabilitiesCurrent"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesCurrent_ca905c78-21a6-4f93-9c93-0ebf32a72058" xlink:to="loc_us-gaap_AccountsPayableAndAccruedLiabilitiesCurrent_0f85663d-4959-48a6-96fe-3a79753ac51b" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmployeeRelatedLiabilitiesCurrent_45ff5dd6-9e3d-4b54-bd6b-a69cb7137106" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EmployeeRelatedLiabilitiesCurrent"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesCurrent_ca905c78-21a6-4f93-9c93-0ebf32a72058" xlink:to="loc_us-gaap_EmployeeRelatedLiabilitiesCurrent_45ff5dd6-9e3d-4b54-bd6b-a69cb7137106" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractWithCustomerLiabilityCurrent_a90a8e0d-fd52-46c4-9c0b-071c7a2b9a01" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ContractWithCustomerLiabilityCurrent"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesCurrent_ca905c78-21a6-4f93-9c93-0ebf32a72058" xlink:to="loc_us-gaap_ContractWithCustomerLiabilityCurrent_a90a8e0d-fd52-46c4-9c0b-071c7a2b9a01" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsCurrent_d82e7750-9fae-4593-b0d8-bc3510c7d4a4" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AssetsCurrent"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_36eee24e-6217-4f03-9fbe-53b17f55ee70" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CashAndCashEquivalentsAtCarryingValue"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsCurrent_d82e7750-9fae-4593-b0d8-bc3510c7d4a4" xlink:to="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_36eee24e-6217-4f03-9fbe-53b17f55ee70" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsReceivableNetCurrent_1d2b20f9-8df5-47e4-9209-bf346c85262a" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AccountsReceivableNetCurrent"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsCurrent_d82e7750-9fae-4593-b0d8-bc3510c7d4a4" xlink:to="loc_us-gaap_AccountsReceivableNetCurrent_1d2b20f9-8df5-47e4-9209-bf346c85262a" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NotesAndLoansReceivableNetCurrent_4fb24e81-4176-4851-983e-4becf4000cff" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NotesAndLoansReceivableNetCurrent"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsCurrent_d82e7750-9fae-4593-b0d8-bc3510c7d4a4" xlink:to="loc_us-gaap_NotesAndLoansReceivableNetCurrent_4fb24e81-4176-4851-983e-4becf4000cff" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PrepaidExpenseAndOtherAssetsCurrent_fc43f624-72aa-4595-88a6-c10730677063" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PrepaidExpenseAndOtherAssetsCurrent"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsCurrent_d82e7750-9fae-4593-b0d8-bc3510c7d4a4" xlink:to="loc_us-gaap_PrepaidExpenseAndOtherAssetsCurrent_fc43f624-72aa-4595-88a6-c10730677063" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Liabilities_efb3279b-a936-47f6-b17a-239fc6e93557" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_Liabilities"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesCurrent_00b18874-71fc-455e-b8cc-d5ead20cb192" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LiabilitiesCurrent"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities_efb3279b-a936-47f6-b17a-239fc6e93557" xlink:to="loc_us-gaap_LiabilitiesCurrent_00b18874-71fc-455e-b8cc-d5ead20cb192" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseLiabilityNoncurrent_62a05b8a-e13f-453e-aa1d-d8b3082c0cc9" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OperatingLeaseLiabilityNoncurrent"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities_efb3279b-a936-47f6-b17a-239fc6e93557" xlink:to="loc_us-gaap_OperatingLeaseLiabilityNoncurrent_62a05b8a-e13f-453e-aa1d-d8b3082c0cc9" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredIncomeTaxLiabilitiesNet_8720aa73-69b7-4d6c-8d7c-f0a1f2fddd0a" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DeferredIncomeTaxLiabilitiesNet"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities_efb3279b-a936-47f6-b17a-239fc6e93557" xlink:to="loc_us-gaap_DeferredIncomeTaxLiabilitiesNet_8720aa73-69b7-4d6c-8d7c-f0a1f2fddd0a" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherLiabilitiesNoncurrent_02941bdf-60c9-4f01-acba-66c756b4dec1" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherLiabilitiesNoncurrent"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities_efb3279b-a936-47f6-b17a-239fc6e93557" xlink:to="loc_us-gaap_OtherLiabilitiesNoncurrent_02941bdf-60c9-4f01-acba-66c756b4dec1" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtNoncurrent_e5c3afad-049f-4fb2-a21b-53f99b53d117" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LongTermDebtNoncurrent"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities_efb3279b-a936-47f6-b17a-239fc6e93557" xlink:to="loc_us-gaap_LongTermDebtNoncurrent_e5c3afad-049f-4fb2-a21b-53f99b53d117" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Assets_b1f5777f-06e7-4ef2-86f9-31d823ae9331" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_Assets"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsCurrent_09530765-1913-40c0-8ec2-51d7b4925c1e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AssetsCurrent"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_b1f5777f-06e7-4ef2-86f9-31d823ae9331" xlink:to="loc_us-gaap_AssetsCurrent_09530765-1913-40c0-8ec2-51d7b4925c1e" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentNet_3b183fdc-277f-4645-bfd2-e3bf07ffc404" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PropertyPlantAndEquipmentNet"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_b1f5777f-06e7-4ef2-86f9-31d823ae9331" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentNet_3b183fdc-277f-4645-bfd2-e3bf07ffc404" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseRightOfUseAsset_c369ab0e-7653-403a-a126-7f8b5e4b14e6" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OperatingLeaseRightOfUseAsset"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_b1f5777f-06e7-4ef2-86f9-31d823ae9331" xlink:to="loc_us-gaap_OperatingLeaseRightOfUseAsset_c369ab0e-7653-403a-a126-7f8b5e4b14e6" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Goodwill_c6ed4432-b5ca-4d96-bcb8-cf1902866c0d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_Goodwill"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_b1f5777f-06e7-4ef2-86f9-31d823ae9331" xlink:to="loc_us-gaap_Goodwill_c6ed4432-b5ca-4d96-bcb8-cf1902866c0d" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IntangibleAssetsNetExcludingGoodwill_241b2652-f92e-4664-8873-a6116ee6c2f7" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IntangibleAssetsNetExcludingGoodwill"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_b1f5777f-06e7-4ef2-86f9-31d823ae9331" xlink:to="loc_us-gaap_IntangibleAssetsNetExcludingGoodwill_241b2652-f92e-4664-8873-a6116ee6c2f7" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NotesAndLoansReceivableNetNoncurrent_e5eb50fb-f654-474a-8285-4a9625ed6fbc" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NotesAndLoansReceivableNetNoncurrent"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_b1f5777f-06e7-4ef2-86f9-31d823ae9331" xlink:to="loc_us-gaap_NotesAndLoansReceivableNetNoncurrent_e5eb50fb-f654-474a-8285-4a9625ed6fbc" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherAssetsNoncurrent_8749109e-cea3-4e91-98c6-09c2699037e0" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherAssetsNoncurrent"/>
    <link:calculationArc order="7" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_b1f5777f-06e7-4ef2-86f9-31d823ae9331" xlink:to="loc_us-gaap_OtherAssetsNoncurrent_8749109e-cea3-4e91-98c6-09c2699037e0" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquity_443e213a-8250-4efa-a972-bb2faa58a567" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StockholdersEquity"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PreferredStockValue_674bc8cb-dc22-450f-853f-876c7f214b8f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PreferredStockValue"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquity_443e213a-8250-4efa-a972-bb2faa58a567" xlink:to="loc_us-gaap_PreferredStockValue_674bc8cb-dc22-450f-853f-876c7f214b8f" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockValue_b0200270-86e6-4072-a830-438585bfdda7" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CommonStockValue"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquity_443e213a-8250-4efa-a972-bb2faa58a567" xlink:to="loc_us-gaap_CommonStockValue_b0200270-86e6-4072-a830-438585bfdda7" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdditionalPaidInCapitalCommonStock_0fc4f200-5d15-4e88-91e2-eacb3d859c05" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AdditionalPaidInCapitalCommonStock"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquity_443e213a-8250-4efa-a972-bb2faa58a567" xlink:to="loc_us-gaap_AdditionalPaidInCapitalCommonStock_0fc4f200-5d15-4e88-91e2-eacb3d859c05" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetainedEarningsAccumulatedDeficit_c9c6087f-db82-471e-aa24-48dcb635b6a4" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RetainedEarningsAccumulatedDeficit"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquity_443e213a-8250-4efa-a972-bb2faa58a567" xlink:to="loc_us-gaap_RetainedEarningsAccumulatedDeficit_c9c6087f-db82-471e-aa24-48dcb635b6a4" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_47090922-9d3d-42b1-85d3-2628e1c2cf62" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquity_443e213a-8250-4efa-a972-bb2faa58a567" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_47090922-9d3d-42b1-85d3-2628e1c2cf62" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.fticonsulting.com/role/CondensedConsolidatedStatementsofComprehensiveIncome" xlink:type="simple" xlink:href="fcn-20250630.xsd#CondensedConsolidatedStatementsofComprehensiveIncome"/>
  <link:calculationLink xlink:role="http://www.fticonsulting.com/role/CondensedConsolidatedStatementsofComprehensiveIncome" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent_be6e7614-bf8a-4a1a-99a2-406e930c09bc" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent_e7092f4e-2989-414e-98e3-bcf6b5b04010" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent_be6e7614-bf8a-4a1a-99a2-406e930c09bc" xlink:to="loc_us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent_e7092f4e-2989-414e-98e3-bcf6b5b04010" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_3df2f483-d967-4483-be45-b090b316062a" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingIncomeLoss_2cb60c6d-3975-45a1-a6fe-40db81599fa9" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OperatingIncomeLoss"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_3df2f483-d967-4483-be45-b090b316062a" xlink:to="loc_us-gaap_OperatingIncomeLoss_2cb60c6d-3975-45a1-a6fe-40db81599fa9" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NonoperatingIncomeExpense_4e562293-b79e-4f56-87e6-d8963f61ece9" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NonoperatingIncomeExpense"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_3df2f483-d967-4483-be45-b090b316062a" xlink:to="loc_us-gaap_NonoperatingIncomeExpense_4e562293-b79e-4f56-87e6-d8963f61ece9" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ComprehensiveIncomeNetOfTax_a8d96e68-9aaa-4bbf-9f85-0f07b179b7e1" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ComprehensiveIncomeNetOfTax"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_66000bce-2fa0-4d37-9df5-ed0ff268cf32" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NetIncomeLoss"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_ComprehensiveIncomeNetOfTax_a8d96e68-9aaa-4bbf-9f85-0f07b179b7e1" xlink:to="loc_us-gaap_NetIncomeLoss_66000bce-2fa0-4d37-9df5-ed0ff268cf32" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent_ad1ba41e-97da-44ca-8fd0-c06452af8f03" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_ComprehensiveIncomeNetOfTax_a8d96e68-9aaa-4bbf-9f85-0f07b179b7e1" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent_ad1ba41e-97da-44ca-8fd0-c06452af8f03" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CostsAndExpenses_281ea0ff-8dd8-4ec0-8786-67f17c33c7fc" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CostsAndExpenses"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CostOfRevenue_af9f2220-f29a-4f3a-a2b9-dabbd0926904" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CostOfRevenue"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_CostsAndExpenses_281ea0ff-8dd8-4ec0-8786-67f17c33c7fc" xlink:to="loc_us-gaap_CostOfRevenue_af9f2220-f29a-4f3a-a2b9-dabbd0926904" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SellingGeneralAndAdministrativeExpense_cb4107d2-a0cf-465d-8bf0-e640cc0f41ed" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SellingGeneralAndAdministrativeExpense"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_CostsAndExpenses_281ea0ff-8dd8-4ec0-8786-67f17c33c7fc" xlink:to="loc_us-gaap_SellingGeneralAndAdministrativeExpense_cb4107d2-a0cf-465d-8bf0-e640cc0f41ed" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AmortizationOfIntangibleAssets_b13834e7-d416-49dc-acc0-25c47d4769a8" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AmortizationOfIntangibleAssets"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_CostsAndExpenses_281ea0ff-8dd8-4ec0-8786-67f17c33c7fc" xlink:to="loc_us-gaap_AmortizationOfIntangibleAssets_b13834e7-d416-49dc-acc0-25c47d4769a8" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringAndRelatedCostIncurredCost_a08ab874-a981-4505-8aaf-da7b2e421f05" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RestructuringAndRelatedCostIncurredCost"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_CostsAndExpenses_281ea0ff-8dd8-4ec0-8786-67f17c33c7fc" xlink:to="loc_us-gaap_RestructuringAndRelatedCostIncurredCost_a08ab874-a981-4505-8aaf-da7b2e421f05" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingIncomeLoss_683bdd89-bb75-41c0-a41e-2196921f07c4" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OperatingIncomeLoss"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_43c07dfe-2f16-4640-9edf-8399f7d80f5c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingIncomeLoss_683bdd89-bb75-41c0-a41e-2196921f07c4" xlink:to="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_43c07dfe-2f16-4640-9edf-8399f7d80f5c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CostsAndExpenses_b3acdcb7-bd2a-4f66-b827-192ec22a5585" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CostsAndExpenses"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingIncomeLoss_683bdd89-bb75-41c0-a41e-2196921f07c4" xlink:to="loc_us-gaap_CostsAndExpenses_b3acdcb7-bd2a-4f66-b827-192ec22a5585" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NonoperatingIncomeExpense_af596d00-dd87-4c54-bdcd-ceecce966504" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NonoperatingIncomeExpense"/>
    <link:loc xlink:type="locator" xlink:label="loc_fcn_InterestAndOtherIncomeExpenseNet_a7fb756c-be3b-41ad-b868-cc74dae102a2" xlink:href="fcn-20250630.xsd#fcn_InterestAndOtherIncomeExpenseNet"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NonoperatingIncomeExpense_af596d00-dd87-4c54-bdcd-ceecce966504" xlink:to="loc_fcn_InterestAndOtherIncomeExpenseNet_a7fb756c-be3b-41ad-b868-cc74dae102a2" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestExpenseNonoperating_f9c3263b-fb91-446b-a945-a8123015999e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_InterestExpenseNonoperating"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NonoperatingIncomeExpense_af596d00-dd87-4c54-bdcd-ceecce966504" xlink:to="loc_us-gaap_InterestExpenseNonoperating_f9c3263b-fb91-446b-a945-a8123015999e" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_c7e9673a-de56-4b20-b9a2-6e42cb102a6f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NetIncomeLoss"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_448b765c-7f0d-4963-9579-436b4dd0d6c5" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetIncomeLoss_c7e9673a-de56-4b20-b9a2-6e42cb102a6f" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_448b765c-7f0d-4963-9579-436b4dd0d6c5" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxExpenseBenefit_22c1187b-5ef4-4791-ac90-3e0369270e30" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeTaxExpenseBenefit"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetIncomeLoss_c7e9673a-de56-4b20-b9a2-6e42cb102a6f" xlink:to="loc_us-gaap_IncomeTaxExpenseBenefit_22c1187b-5ef4-4791-ac90-3e0369270e30" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.fticonsulting.com/role/CondensedConsolidatedStatementsofCashFlows" xlink:type="simple" xlink:href="fcn-20250630.xsd#CondensedConsolidatedStatementsofCashFlows"/>
  <link:calculationLink xlink:role="http://www.fticonsulting.com/role/CondensedConsolidatedStatementsofCashFlows" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_69af6dce-ed2b-407c-86ea-ee434c3fcfdb" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivities"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromLinesOfCredit_d67ffe57-cec5-4395-8c63-513433e3242e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ProceedsFromLinesOfCredit"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_69af6dce-ed2b-407c-86ea-ee434c3fcfdb" xlink:to="loc_us-gaap_ProceedsFromLinesOfCredit_d67ffe57-cec5-4395-8c63-513433e3242e" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RepaymentsOfLinesOfCredit_a2e12f75-46a6-4dca-88cd-18b703f4ca47" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RepaymentsOfLinesOfCredit"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_69af6dce-ed2b-407c-86ea-ee434c3fcfdb" xlink:to="loc_us-gaap_RepaymentsOfLinesOfCredit_a2e12f75-46a6-4dca-88cd-18b703f4ca47" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsForRepurchaseOfCommonStock_31255da0-730f-4657-9ccb-ed36061e4869" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PaymentsForRepurchaseOfCommonStock"/>
    <link:calculationArc order="3" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_69af6dce-ed2b-407c-86ea-ee434c3fcfdb" xlink:to="loc_us-gaap_PaymentsForRepurchaseOfCommonStock_31255da0-730f-4657-9ccb-ed36061e4869" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsRelatedToTaxWithholdingForShareBasedCompensation_5035fda9-cb1d-49b5-be2c-90b1cecc5f8f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PaymentsRelatedToTaxWithholdingForShareBasedCompensation"/>
    <link:calculationArc order="4" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_69af6dce-ed2b-407c-86ea-ee434c3fcfdb" xlink:to="loc_us-gaap_PaymentsRelatedToTaxWithholdingForShareBasedCompensation_5035fda9-cb1d-49b5-be2c-90b1cecc5f8f" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromStockOptionsExercised_981d1df8-23e1-459b-8564-a2c7a740c223" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ProceedsFromStockOptionsExercised"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_69af6dce-ed2b-407c-86ea-ee434c3fcfdb" xlink:to="loc_us-gaap_ProceedsFromStockOptionsExercised_981d1df8-23e1-459b-8564-a2c7a740c223" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromPaymentsForOtherFinancingActivities_3f1630da-bc51-410c-a8d4-6416647173a6" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ProceedsFromPaymentsForOtherFinancingActivities"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_69af6dce-ed2b-407c-86ea-ee434c3fcfdb" xlink:to="loc_us-gaap_ProceedsFromPaymentsForOtherFinancingActivities_3f1630da-bc51-410c-a8d4-6416647173a6" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_214e5e5f-cac0-49a3-ab60-02bb6dc60980" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_80fcf7cf-f24f-44f5-8d07-8c83a27ba243" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivities"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_214e5e5f-cac0-49a3-ab60-02bb6dc60980" xlink:to="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_80fcf7cf-f24f-44f5-8d07-8c83a27ba243" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_fcab06c9-faa2-4f09-964d-508633637c0c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivities"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_214e5e5f-cac0-49a3-ab60-02bb6dc60980" xlink:to="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_fcab06c9-faa2-4f09-964d-508633637c0c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_8dafd9f1-ae95-46cd-8c59-344bf09848e9" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivities"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_214e5e5f-cac0-49a3-ab60-02bb6dc60980" xlink:to="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_8dafd9f1-ae95-46cd-8c59-344bf09848e9" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_b48b2519-411c-4029-94a5-3e9689cab9f5" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_214e5e5f-cac0-49a3-ab60-02bb6dc60980" xlink:to="loc_us-gaap_EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_b48b2519-411c-4029-94a5-3e9689cab9f5" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_c1f565fe-8b36-42f4-ae02-10aecb69c852" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivities"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_399630da-2357-4485-8f1c-c857f6517361" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NetIncomeLoss"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_c1f565fe-8b36-42f4-ae02-10aecb69c852" xlink:to="loc_us-gaap_NetIncomeLoss_399630da-2357-4485-8f1c-c857f6517361" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DepreciationAndAmortization_2a18f9e1-4978-4f9d-a7b6-85aaa9fcd254" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DepreciationAndAmortization"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_c1f565fe-8b36-42f4-ae02-10aecb69c852" xlink:to="loc_us-gaap_DepreciationAndAmortization_2a18f9e1-4978-4f9d-a7b6-85aaa9fcd254" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AmortizationOfIntangibleAssets_a920400f-1608-4124-87d3-4990b6fbe8ea" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AmortizationOfIntangibleAssets"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_c1f565fe-8b36-42f4-ae02-10aecb69c852" xlink:to="loc_us-gaap_AmortizationOfIntangibleAssets_a920400f-1608-4124-87d3-4990b6fbe8ea" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProvisionForDoubtfulAccounts_08aaec0f-ec93-4178-a162-5cccae8b5a49" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ProvisionForDoubtfulAccounts"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_c1f565fe-8b36-42f4-ae02-10aecb69c852" xlink:to="loc_us-gaap_ProvisionForDoubtfulAccounts_08aaec0f-ec93-4178-a162-5cccae8b5a49" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensation_c6f4a242-e95e-4d6a-b4d8-54b753452906" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ShareBasedCompensation"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_c1f565fe-8b36-42f4-ae02-10aecb69c852" xlink:to="loc_us-gaap_ShareBasedCompensation_c6f4a242-e95e-4d6a-b4d8-54b753452906" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_fcn_DeferredIncomeTaxExpenseBenefitExcludingCTA_10f8b8bb-9c35-4ff5-9f0c-4fec6b9cc706" xlink:href="fcn-20250630.xsd#fcn_DeferredIncomeTaxExpenseBenefitExcludingCTA"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_c1f565fe-8b36-42f4-ae02-10aecb69c852" xlink:to="loc_fcn_DeferredIncomeTaxExpenseBenefitExcludingCTA_10f8b8bb-9c35-4ff5-9f0c-4fec6b9cc706" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1_49933104-a083-4c5a-839d-33e8f78e2f7e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1"/>
    <link:calculationArc order="7" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_c1f565fe-8b36-42f4-ae02-10aecb69c852" xlink:to="loc_us-gaap_BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1_49933104-a083-4c5a-839d-33e8f78e2f7e" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInAccountsReceivable_2a0f5c0a-ca7d-4adf-aaba-1f63395462b0" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncreaseDecreaseInAccountsReceivable"/>
    <link:calculationArc order="8" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_c1f565fe-8b36-42f4-ae02-10aecb69c852" xlink:to="loc_us-gaap_IncreaseDecreaseInAccountsReceivable_2a0f5c0a-ca7d-4adf-aaba-1f63395462b0" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInNotesReceivableCurrent_f8747b6d-cd89-4fc3-a840-66f90ee39c40" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncreaseDecreaseInNotesReceivableCurrent"/>
    <link:calculationArc order="9" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_c1f565fe-8b36-42f4-ae02-10aecb69c852" xlink:to="loc_us-gaap_IncreaseDecreaseInNotesReceivableCurrent_f8747b6d-cd89-4fc3-a840-66f90ee39c40" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets_ae67b6ea-4df2-4229-b5d3-8ca52a764d52" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets"/>
    <link:calculationArc order="10" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_c1f565fe-8b36-42f4-ae02-10aecb69c852" xlink:to="loc_us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets_ae67b6ea-4df2-4229-b5d3-8ca52a764d52" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities_3aa44238-f9c2-42af-9c20-20aba466059d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities"/>
    <link:calculationArc order="11" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_c1f565fe-8b36-42f4-ae02-10aecb69c852" xlink:to="loc_us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities_3aa44238-f9c2-42af-9c20-20aba466059d" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInAccruedIncomeTaxesPayable_5acdf805-b35f-4297-b9d9-2ac08c3f7932" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncreaseDecreaseInAccruedIncomeTaxesPayable"/>
    <link:calculationArc order="12" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_c1f565fe-8b36-42f4-ae02-10aecb69c852" xlink:to="loc_us-gaap_IncreaseDecreaseInAccruedIncomeTaxesPayable_5acdf805-b35f-4297-b9d9-2ac08c3f7932" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInEmployeeRelatedLiabilities_903741ba-dce3-4c7b-80d8-e5891541c3ef" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncreaseDecreaseInEmployeeRelatedLiabilities"/>
    <link:calculationArc order="13" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_c1f565fe-8b36-42f4-ae02-10aecb69c852" xlink:to="loc_us-gaap_IncreaseDecreaseInEmployeeRelatedLiabilities_903741ba-dce3-4c7b-80d8-e5891541c3ef" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_fcn_IncreaseDecreaseInBillingInExcessOfServiceProvided_ba0b425b-9e54-4bdd-b017-065847012ab9" xlink:href="fcn-20250630.xsd#fcn_IncreaseDecreaseInBillingInExcessOfServiceProvided"/>
    <link:calculationArc order="14" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_c1f565fe-8b36-42f4-ae02-10aecb69c852" xlink:to="loc_fcn_IncreaseDecreaseInBillingInExcessOfServiceProvided_ba0b425b-9e54-4bdd-b017-065847012ab9" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_fcn_AmortizationOfLoansToEmployees_357d6bdd-9b77-4157-9fee-c61e48b26522" xlink:href="fcn-20250630.xsd#fcn_AmortizationOfLoansToEmployees"/>
    <link:calculationArc order="15" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_c1f565fe-8b36-42f4-ae02-10aecb69c852" xlink:to="loc_fcn_AmortizationOfLoansToEmployees_357d6bdd-9b77-4157-9fee-c61e48b26522" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_ca75f656-41d2-47bd-8216-0a81c488a3b0" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivities"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_c674b8d7-aa36-40f5-9ff5-7c669c2bf332" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PaymentsToAcquirePropertyPlantAndEquipment"/>
    <link:calculationArc order="1" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_ca75f656-41d2-47bd-8216-0a81c488a3b0" xlink:to="loc_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_c674b8d7-aa36-40f5-9ff5-7c669c2bf332" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromSaleOfShortTermInvestments_196a010d-71f4-4bc5-b0b8-aaef797b3025" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ProceedsFromSaleOfShortTermInvestments"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_ca75f656-41d2-47bd-8216-0a81c488a3b0" xlink:to="loc_us-gaap_ProceedsFromSaleOfShortTermInvestments_196a010d-71f4-4bc5-b0b8-aaef797b3025" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.fticonsulting.com/role/EarningsperCommonShareDetails" xlink:type="simple" xlink:href="fcn-20250630.xsd#EarningsperCommonShareDetails"/>
  <link:calculationLink xlink:role="http://www.fticonsulting.com/role/EarningsperCommonShareDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_cc91c89a-36bd-488e-9122-feba52897d40" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_b18eed9b-c66d-4873-8b9e-5853497e2524" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_WeightedAverageNumberOfSharesOutstandingBasic"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_cc91c89a-36bd-488e-9122-feba52897d40" xlink:to="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_b18eed9b-c66d-4873-8b9e-5853497e2524" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements_e6270ae4-78e6-4249-9058-47e57d91a528" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_cc91c89a-36bd-488e-9122-feba52897d40" xlink:to="loc_us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements_e6270ae4-78e6-4249-9058-47e57d91a528" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_fcn_IncrementalCommonSharesAttributableToDilutiveEffectOfShareBasedPaymentArrangementsStockOptions_18cc7504-337f-4b91-bd08-6562f589dd41" xlink:href="fcn-20250630.xsd#fcn_IncrementalCommonSharesAttributableToDilutiveEffectOfShareBasedPaymentArrangementsStockOptions"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_cc91c89a-36bd-488e-9122-feba52897d40" xlink:to="loc_fcn_IncrementalCommonSharesAttributableToDilutiveEffectOfShareBasedPaymentArrangementsStockOptions_18cc7504-337f-4b91-bd08-6562f589dd41" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.fticonsulting.com/role/AccountsReceivableandAllowanceforExpectedCreditLossesAccountsReceivableNetDetails" xlink:type="simple" xlink:href="fcn-20250630.xsd#AccountsReceivableandAllowanceforExpectedCreditLossesAccountsReceivableNetDetails"/>
  <link:calculationLink xlink:role="http://www.fticonsulting.com/role/AccountsReceivableandAllowanceforExpectedCreditLossesAccountsReceivableNetDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsReceivableNetCurrent_93f75334-a832-4756-a19e-f3a5700a15f2" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AccountsReceivableNetCurrent"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsReceivableGrossCurrent_d389379a-849f-4114-8834-7296bf9291c4" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AccountsReceivableGrossCurrent"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AccountsReceivableNetCurrent_93f75334-a832-4756-a19e-f3a5700a15f2" xlink:to="loc_us-gaap_AccountsReceivableGrossCurrent_d389379a-849f-4114-8834-7296bf9291c4" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UnbilledReceivablesCurrent_309ec73b-dcd5-4185-8dc3-e7d14971e36b" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_UnbilledReceivablesCurrent"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AccountsReceivableNetCurrent_93f75334-a832-4756-a19e-f3a5700a15f2" xlink:to="loc_us-gaap_UnbilledReceivablesCurrent_309ec73b-dcd5-4185-8dc3-e7d14971e36b" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent_2c18bec2-e393-46e1-8cae-7ca1166c174f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent"/>
    <link:calculationArc order="3" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AccountsReceivableNetCurrent_93f75334-a832-4756-a19e-f3a5700a15f2" xlink:to="loc_us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent_2c18bec2-e393-46e1-8cae-7ca1166c174f" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.fticonsulting.com/role/GoodwillandIntangibleAssetsIntangibleAssetsDetails" xlink:type="simple" xlink:href="fcn-20250630.xsd#GoodwillandIntangibleAssetsIntangibleAssetsDetails"/>
  <link:calculationLink xlink:role="http://www.fticonsulting.com/role/GoodwillandIntangibleAssetsIntangibleAssetsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsNet_a3529ea7-4c7a-47ab-bf9d-4fc0714c6339" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FiniteLivedIntangibleAssetsNet"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsGross_f493f6de-1520-47c2-b82a-d2d33aa8fc6e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FiniteLivedIntangibleAssetsGross"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsNet_a3529ea7-4c7a-47ab-bf9d-4fc0714c6339" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsGross_f493f6de-1520-47c2-b82a-d2d33aa8fc6e" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_295ce93b-ded8-4e86-adeb-7a1adc96941a" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsNet_a3529ea7-4c7a-47ab-bf9d-4fc0714c6339" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_295ce93b-ded8-4e86-adeb-7a1adc96941a" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IntangibleAssetsNetExcludingGoodwill_8f25b9a1-ff3d-4c5b-875b-566bbe270a15" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IntangibleAssetsNetExcludingGoodwill"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsNet_bebec23f-970f-472a-be8f-87ab3bb4af08" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FiniteLivedIntangibleAssetsNet"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IntangibleAssetsNetExcludingGoodwill_8f25b9a1-ff3d-4c5b-875b-566bbe270a15" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsNet_bebec23f-970f-472a-be8f-87ab3bb4af08" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill_dad5abf5-54b4-4cbb-b192-1e3365644db3" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IntangibleAssetsNetExcludingGoodwill_8f25b9a1-ff3d-4c5b-875b-566bbe270a15" xlink:to="loc_us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill_dad5abf5-54b4-4cbb-b192-1e3365644db3" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.fticonsulting.com/role/GoodwillandIntangibleAssetsIntangibleAssetsDetails_1" xlink:type="simple" xlink:href="fcn-20250630.xsd#GoodwillandIntangibleAssetsIntangibleAssetsDetails_1"/>
  <link:calculationLink xlink:role="http://www.fticonsulting.com/role/GoodwillandIntangibleAssetsIntangibleAssetsDetails_1" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IntangibleAssetsNetExcludingGoodwill_c1c97d8a-d85b-4d9e-9a9e-dd38765024f0" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IntangibleAssetsNetExcludingGoodwill"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IntangibleAssetsGrossExcludingGoodwill_ac890cad-c169-4b45-bcce-f7c73b7df455" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IntangibleAssetsGrossExcludingGoodwill"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IntangibleAssetsNetExcludingGoodwill_c1c97d8a-d85b-4d9e-9a9e-dd38765024f0" xlink:to="loc_us-gaap_IntangibleAssetsGrossExcludingGoodwill_ac890cad-c169-4b45-bcce-f7c73b7df455" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_3c8b42d9-dd87-48d0-b1d4-6347facbc6d1" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IntangibleAssetsNetExcludingGoodwill_c1c97d8a-d85b-4d9e-9a9e-dd38765024f0" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_3c8b42d9-dd87-48d0-b1d4-6347facbc6d1" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.fticonsulting.com/role/LeasesLeaseAssetsandLiabilitiesDetails" xlink:type="simple" xlink:href="fcn-20250630.xsd#LeasesLeaseAssetsandLiabilitiesDetails"/>
  <link:calculationLink xlink:role="http://www.fticonsulting.com/role/LeasesLeaseAssetsandLiabilitiesDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseLiability_d092aa8e-bd21-447a-ac0b-30eb1e80caed" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OperatingLeaseLiability"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseLiabilityCurrent_468f12b5-98a7-4892-aa35-2ec78b566618" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OperatingLeaseLiabilityCurrent"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingLeaseLiability_d092aa8e-bd21-447a-ac0b-30eb1e80caed" xlink:to="loc_us-gaap_OperatingLeaseLiabilityCurrent_468f12b5-98a7-4892-aa35-2ec78b566618" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseLiabilityNoncurrent_baea0038-2cc7-4027-be42-a74bf9424b1f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OperatingLeaseLiabilityNoncurrent"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingLeaseLiability_d092aa8e-bd21-447a-ac0b-30eb1e80caed" xlink:to="loc_us-gaap_OperatingLeaseLiabilityNoncurrent_baea0038-2cc7-4027-be42-a74bf9424b1f" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.fticonsulting.com/role/LeasesLeaseCostDetails" xlink:type="simple" xlink:href="fcn-20250630.xsd#LeasesLeaseCostDetails"/>
  <link:calculationLink xlink:role="http://www.fticonsulting.com/role/LeasesLeaseCostDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LeaseCost_67242640-90e7-4aa3-848e-0946cf853683" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LeaseCost"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseCost_331e2a39-7c08-48f1-9ccb-9e097349cdb6" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OperatingLeaseCost"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LeaseCost_67242640-90e7-4aa3-848e-0946cf853683" xlink:to="loc_us-gaap_OperatingLeaseCost_331e2a39-7c08-48f1-9ccb-9e097349cdb6" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShortTermLeaseCost_2506a1ae-f3d1-4f2a-9cd7-9a6eb301175a" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ShortTermLeaseCost"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LeaseCost_67242640-90e7-4aa3-848e-0946cf853683" xlink:to="loc_us-gaap_ShortTermLeaseCost_2506a1ae-f3d1-4f2a-9cd7-9a6eb301175a" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_VariableLeaseCost_47ef754a-c3e1-4b93-aac1-c5c6863771ca" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_VariableLeaseCost"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LeaseCost_67242640-90e7-4aa3-848e-0946cf853683" xlink:to="loc_us-gaap_VariableLeaseCost_47ef754a-c3e1-4b93-aac1-c5c6863771ca" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.fticonsulting.com/role/LeasesMaturityAnalysisDetails" xlink:type="simple" xlink:href="fcn-20250630.xsd#LeasesMaturityAnalysisDetails"/>
  <link:calculationLink xlink:role="http://www.fticonsulting.com/role/LeasesMaturityAnalysisDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_249279f0-0197-4302-87d4-4547d6c458e7" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseLiability_4b70b6fd-ce8c-479d-8ecb-64a4e9b572a9" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OperatingLeaseLiability"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_249279f0-0197-4302-87d4-4547d6c458e7" xlink:to="loc_us-gaap_OperatingLeaseLiability_4b70b6fd-ce8c-479d-8ecb-64a4e9b572a9" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount_ed5dbb03-3ac9-474b-930f-588bfc2a1e00" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_249279f0-0197-4302-87d4-4547d6c458e7" xlink:to="loc_us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount_ed5dbb03-3ac9-474b-930f-588bfc2a1e00" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.fticonsulting.com/role/LeasesMaturityAnalysisDetails_1" xlink:type="simple" xlink:href="fcn-20250630.xsd#LeasesMaturityAnalysisDetails_1"/>
  <link:calculationLink xlink:role="http://www.fticonsulting.com/role/LeasesMaturityAnalysisDetails_1" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_249ca846-270c-40c1-84da-ae73c9ea4e61" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear_e263080b-b775-4568-b0ce-2b9e8688016f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_249ca846-270c-40c1-84da-ae73c9ea4e61" xlink:to="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear_e263080b-b775-4568-b0ce-2b9e8688016f" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths_b0312b2d-2aae-4e60-aa8d-13be939764dd" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_249ca846-270c-40c1-84da-ae73c9ea4e61" xlink:to="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths_b0312b2d-2aae-4e60-aa8d-13be939764dd" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo_032db1fb-cbbb-4b20-b07a-1c16a3130cd8" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_249ca846-270c-40c1-84da-ae73c9ea4e61" xlink:to="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo_032db1fb-cbbb-4b20-b07a-1c16a3130cd8" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree_4b8e3d45-50c6-4690-971c-ad5056164342" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_249ca846-270c-40c1-84da-ae73c9ea4e61" xlink:to="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree_4b8e3d45-50c6-4690-971c-ad5056164342" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour_5a00682b-3f2d-4a68-87dd-94b56966191f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_249ca846-270c-40c1-84da-ae73c9ea4e61" xlink:to="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour_5a00682b-3f2d-4a68-87dd-94b56966191f" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_fcn_LesseeOperatingLeaseLiabilityToBePaidAfterYearFour_655644cd-e75b-4aa7-ba88-e38676d7f87d" xlink:href="fcn-20250630.xsd#fcn_LesseeOperatingLeaseLiabilityToBePaidAfterYearFour"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_249ca846-270c-40c1-84da-ae73c9ea4e61" xlink:to="loc_fcn_LesseeOperatingLeaseLiabilityToBePaidAfterYearFour_655644cd-e75b-4aa7-ba88-e38676d7f87d" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.fticonsulting.com/role/SegmentReportingRevenuesandAdjustedSegmentEarningsbeforeInterestTaxesDepreciationandAmortizationforReportableSegmentsDetails" xlink:type="simple" xlink:href="fcn-20250630.xsd#SegmentReportingRevenuesandAdjustedSegmentEarningsbeforeInterestTaxesDepreciationandAmortizationforReportableSegmentsDetails"/>
  <link:calculationLink xlink:role="http://www.fticonsulting.com/role/SegmentReportingRevenuesandAdjustedSegmentEarningsbeforeInterestTaxesDepreciationandAmortizationforReportableSegmentsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GrossProfit_448aa8fb-6a9a-447d-81f0-f88701fe92d5" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_GrossProfit"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_ce8b7ef0-db9f-40a4-83e4-121d9de1a358" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_GrossProfit_448aa8fb-6a9a-447d-81f0-f88701fe92d5" xlink:to="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_ce8b7ef0-db9f-40a4-83e4-121d9de1a358" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DirectOperatingCosts_79168a6e-c232-417e-9644-73a696594b95" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DirectOperatingCosts"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_GrossProfit_448aa8fb-6a9a-447d-81f0-f88701fe92d5" xlink:to="loc_us-gaap_DirectOperatingCosts_79168a6e-c232-417e-9644-73a696594b95" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DirectOperatingCosts_854c42ca-5115-407e-8d62-08ac28aa1fba" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DirectOperatingCosts"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmployeeBenefitsAndShareBasedCompensation_ddeaf5a5-5600-4265-9573-8b5c5bb9b20b" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EmployeeBenefitsAndShareBasedCompensation"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DirectOperatingCosts_854c42ca-5115-407e-8d62-08ac28aa1fba" xlink:to="loc_us-gaap_EmployeeBenefitsAndShareBasedCompensation_ddeaf5a5-5600-4265-9573-8b5c5bb9b20b" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentReportingOtherItemAmount_de0ede38-a5d4-47a7-b8a4-6fd0ca1949da" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SegmentReportingOtherItemAmount"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DirectOperatingCosts_854c42ca-5115-407e-8d62-08ac28aa1fba" xlink:to="loc_us-gaap_SegmentReportingOtherItemAmount_de0ede38-a5d4-47a7-b8a4-6fd0ca1949da" xlink:type="arc"/>
  </link:calculationLink>
</link:linkbase>
