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

<!--XBRL Document Created with Wdesk from Workiva-->
<!--Copyright 2021 Workiva-->
<!--r:b6629744-bceb-4bdd-a215-addde9417a9d,g:b61239f2-f756-4d8c-830d-0e5c581a9f4c-->
<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.ducommun.com/role/CondensedConsolidatedBalanceSheets" xlink:type="simple" xlink:href="dco-20210703.xsd#CondensedConsolidatedBalanceSheets"/>
  <link:calculationLink xlink:role="http://www.ducommun.com/role/CondensedConsolidatedBalanceSheets" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquity_e2daef02-8cf1-4238-bf35-80f424a8bc6a" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_StockholdersEquity"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockValue_06c44c1f-c061-4fed-abe0-3fc3991f2dc4" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_CommonStockValue"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquity_e2daef02-8cf1-4238-bf35-80f424a8bc6a" xlink:to="loc_us-gaap_CommonStockValue_06c44c1f-c061-4fed-abe0-3fc3991f2dc4" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdditionalPaidInCapitalCommonStock_ce35afea-0bc1-42b5-86ec-5b30c057da24" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AdditionalPaidInCapitalCommonStock"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquity_e2daef02-8cf1-4238-bf35-80f424a8bc6a" xlink:to="loc_us-gaap_AdditionalPaidInCapitalCommonStock_ce35afea-0bc1-42b5-86ec-5b30c057da24" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetainedEarningsAccumulatedDeficit_1bd5f215-6966-4e92-956e-d510e1e8a0a8" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RetainedEarningsAccumulatedDeficit"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquity_e2daef02-8cf1-4238-bf35-80f424a8bc6a" xlink:to="loc_us-gaap_RetainedEarningsAccumulatedDeficit_1bd5f215-6966-4e92-956e-d510e1e8a0a8" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_b4f28099-c60b-4d71-8f0e-6be6a8825a39" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquity_e2daef02-8cf1-4238-bf35-80f424a8bc6a" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_b4f28099-c60b-4d71-8f0e-6be6a8825a39" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesAndStockholdersEquity_7e4b3bdf-9acd-4f64-8aa3-59e660adff64" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LiabilitiesAndStockholdersEquity"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Liabilities_6dbd9602-23dc-4e48-a824-595e2d7a89b1" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.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_7e4b3bdf-9acd-4f64-8aa3-59e660adff64" xlink:to="loc_us-gaap_Liabilities_6dbd9602-23dc-4e48-a824-595e2d7a89b1" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquity_0f8f8e4d-ce34-46a3-966d-597624abbb08" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_StockholdersEquity"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquity_7e4b3bdf-9acd-4f64-8aa3-59e660adff64" xlink:to="loc_us-gaap_StockholdersEquity_0f8f8e4d-ce34-46a3-966d-597624abbb08" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommitmentsAndContingencies_92bf9c23-00f4-4b6d-90a0-e66b0c50e16a" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_CommitmentsAndContingencies"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquity_7e4b3bdf-9acd-4f64-8aa3-59e660adff64" xlink:to="loc_us-gaap_CommitmentsAndContingencies_92bf9c23-00f4-4b6d-90a0-e66b0c50e16a" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Assets_4d779f27-112a-43b4-a72a-b2d7d9dcdbc0" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_Assets"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsCurrent_b60a8be2-1a3f-4be1-9737-ac789a9bcb9a" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.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_4d779f27-112a-43b4-a72a-b2d7d9dcdbc0" xlink:to="loc_us-gaap_AssetsCurrent_b60a8be2-1a3f-4be1-9737-ac789a9bcb9a" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentNet_9abb1ea0-ac75-40f2-bf18-83061645025b" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.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_4d779f27-112a-43b4-a72a-b2d7d9dcdbc0" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentNet_9abb1ea0-ac75-40f2-bf18-83061645025b" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseRightOfUseAsset_20752049-7788-434b-8cdd-50006848559b" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.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_4d779f27-112a-43b4-a72a-b2d7d9dcdbc0" xlink:to="loc_us-gaap_OperatingLeaseRightOfUseAsset_20752049-7788-434b-8cdd-50006848559b" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Goodwill_d5b9e9d6-4496-4237-88d8-c0be44181817" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.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_4d779f27-112a-43b4-a72a-b2d7d9dcdbc0" xlink:to="loc_us-gaap_Goodwill_d5b9e9d6-4496-4237-88d8-c0be44181817" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IntangibleAssetsNetExcludingGoodwill_fd3a6f26-f8ac-416f-ad0f-b32a6918af02" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.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_4d779f27-112a-43b4-a72a-b2d7d9dcdbc0" xlink:to="loc_us-gaap_IntangibleAssetsNetExcludingGoodwill_fd3a6f26-f8ac-416f-ad0f-b32a6918af02" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredIncomeTaxAssetsNet_232f7f2d-08f3-4a66-8042-6264556afc31" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DeferredIncomeTaxAssetsNet"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_4d779f27-112a-43b4-a72a-b2d7d9dcdbc0" xlink:to="loc_us-gaap_DeferredIncomeTaxAssetsNet_232f7f2d-08f3-4a66-8042-6264556afc31" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherAssetsNoncurrent_4ad4ee11-f808-48dd-a5e4-087942968d5b" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.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_4d779f27-112a-43b4-a72a-b2d7d9dcdbc0" xlink:to="loc_us-gaap_OtherAssetsNoncurrent_4ad4ee11-f808-48dd-a5e4-087942968d5b" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesCurrent_c6890670-38b9-4dd9-9954-269eadb0f05e" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LiabilitiesCurrent"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsPayableCurrent_8f1a8572-5a4d-4d1f-bf44-bd8a53d831f7" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AccountsPayableCurrent"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesCurrent_c6890670-38b9-4dd9-9954-269eadb0f05e" xlink:to="loc_us-gaap_AccountsPayableCurrent_8f1a8572-5a4d-4d1f-bf44-bd8a53d831f7" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractWithCustomerLiabilityCurrent_e658be44-fda1-4314-b270-7a6d64ae621d" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ContractWithCustomerLiabilityCurrent"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesCurrent_c6890670-38b9-4dd9-9954-269eadb0f05e" xlink:to="loc_us-gaap_ContractWithCustomerLiabilityCurrent_e658be44-fda1-4314-b270-7a6d64ae621d" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccruedLiabilitiesCurrent_2be5ff6a-8cd6-433e-9eca-a1db5545c773" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AccruedLiabilitiesCurrent"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesCurrent_c6890670-38b9-4dd9-9954-269eadb0f05e" xlink:to="loc_us-gaap_AccruedLiabilitiesCurrent_2be5ff6a-8cd6-433e-9eca-a1db5545c773" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseLiabilityCurrent_9bbda732-f5d6-4740-bcdc-58a7b38a2e92" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OperatingLeaseLiabilityCurrent"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesCurrent_c6890670-38b9-4dd9-9954-269eadb0f05e" xlink:to="loc_us-gaap_OperatingLeaseLiabilityCurrent_9bbda732-f5d6-4740-bcdc-58a7b38a2e92" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtCurrent_52278724-a915-4047-8ccd-2b8796f7b3c8" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LongTermDebtCurrent"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesCurrent_c6890670-38b9-4dd9-9954-269eadb0f05e" xlink:to="loc_us-gaap_LongTermDebtCurrent_52278724-a915-4047-8ccd-2b8796f7b3c8" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsCurrent_39bd73fb-9bff-45f2-80c5-4c3d506496a0" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AssetsCurrent"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_a1778e15-55f7-4fd5-a002-7e7572bbda77" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.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_39bd73fb-9bff-45f2-80c5-4c3d506496a0" xlink:to="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_a1778e15-55f7-4fd5-a002-7e7572bbda77" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsReceivableNetCurrent_98a4b7cc-64b8-4849-a618-ce7ca60c721d" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.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_39bd73fb-9bff-45f2-80c5-4c3d506496a0" xlink:to="loc_us-gaap_AccountsReceivableNetCurrent_98a4b7cc-64b8-4849-a618-ce7ca60c721d" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractWithCustomerAssetNetCurrent_4905c264-092b-4ac2-976d-16f649c79d82" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ContractWithCustomerAssetNetCurrent"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsCurrent_39bd73fb-9bff-45f2-80c5-4c3d506496a0" xlink:to="loc_us-gaap_ContractWithCustomerAssetNetCurrent_4905c264-092b-4ac2-976d-16f649c79d82" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InventoryNet_088a1e9d-a2cb-44d3-911b-e7df45e6575b" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_InventoryNet"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsCurrent_39bd73fb-9bff-45f2-80c5-4c3d506496a0" xlink:to="loc_us-gaap_InventoryNet_088a1e9d-a2cb-44d3-911b-e7df45e6575b" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_dco_ProductionCostOfContractsCurrent_5f720b47-9c25-4418-bed8-3741b17decd4" xlink:href="dco-20210703.xsd#dco_ProductionCostOfContractsCurrent"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsCurrent_39bd73fb-9bff-45f2-80c5-4c3d506496a0" xlink:to="loc_dco_ProductionCostOfContractsCurrent_5f720b47-9c25-4418-bed8-3741b17decd4" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherAssetsCurrent_4670cc5a-c52d-4a3d-add2-64e6527ed1b9" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OtherAssetsCurrent"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsCurrent_39bd73fb-9bff-45f2-80c5-4c3d506496a0" xlink:to="loc_us-gaap_OtherAssetsCurrent_4670cc5a-c52d-4a3d-add2-64e6527ed1b9" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Liabilities_9f6bb6c2-6c6e-470f-90fe-0d608d03a823" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_Liabilities"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesCurrent_5641e6a8-4fac-41b1-ba89-d2e3ea0b4414" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.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_9f6bb6c2-6c6e-470f-90fe-0d608d03a823" xlink:to="loc_us-gaap_LiabilitiesCurrent_5641e6a8-4fac-41b1-ba89-d2e3ea0b4414" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebt_38b04d2b-e818-4585-87f2-e2ed6a764409" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LongTermDebt"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities_9f6bb6c2-6c6e-470f-90fe-0d608d03a823" xlink:to="loc_us-gaap_LongTermDebt_38b04d2b-e818-4585-87f2-e2ed6a764409" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseLiabilityNoncurrent_32384d10-7c78-4303-86b5-a439fb6aa08a" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OperatingLeaseLiabilityNoncurrent"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities_9f6bb6c2-6c6e-470f-90fe-0d608d03a823" xlink:to="loc_us-gaap_OperatingLeaseLiabilityNoncurrent_32384d10-7c78-4303-86b5-a439fb6aa08a" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredIncomeTaxLiabilitiesNet_4f0dbf10-1836-4939-80e9-d9840e534443" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DeferredIncomeTaxLiabilitiesNet"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities_9f6bb6c2-6c6e-470f-90fe-0d608d03a823" xlink:to="loc_us-gaap_DeferredIncomeTaxLiabilitiesNet_4f0dbf10-1836-4939-80e9-d9840e534443" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherLiabilitiesNoncurrent_bcecf125-1025-4116-b0f2-577320879f64" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OtherLiabilitiesNoncurrent"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities_9f6bb6c2-6c6e-470f-90fe-0d608d03a823" xlink:to="loc_us-gaap_OtherLiabilitiesNoncurrent_bcecf125-1025-4116-b0f2-577320879f64" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.ducommun.com/role/CondensedConsolidatedStatementsofIncome" xlink:type="simple" xlink:href="dco-20210703.xsd#CondensedConsolidatedStatementsofIncome"/>
  <link:calculationLink xlink:role="http://www.ducommun.com/role/CondensedConsolidatedStatementsofIncome" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments_5bc52f84-02c8-4c52-a118-548a0635c881" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestIncomeExpenseNet_f7f6cd46-e0e6-4e84-a670-268971445461" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_InterestIncomeExpenseNet"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments_5bc52f84-02c8-4c52-a118-548a0635c881" xlink:to="loc_us-gaap_InterestIncomeExpenseNet_f7f6cd46-e0e6-4e84-a670-268971445461" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingIncomeLoss_65e43821-0b83-411e-af08-fc1352250729" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OperatingIncomeLoss"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments_5bc52f84-02c8-4c52-a118-548a0635c881" xlink:to="loc_us-gaap_OperatingIncomeLoss_65e43821-0b83-411e-af08-fc1352250729" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingIncomeLoss_0a0ba34c-3d9f-4d2d-98cd-50febdc8006c" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OperatingIncomeLoss"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GrossProfit_362aa401-ea64-4724-b51f-cd8a61a75687" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_GrossProfit"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingIncomeLoss_0a0ba34c-3d9f-4d2d-98cd-50febdc8006c" xlink:to="loc_us-gaap_GrossProfit_362aa401-ea64-4724-b51f-cd8a61a75687" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SellingGeneralAndAdministrativeExpense_f2ffce6b-b63d-43f7-9370-7e8b6cebc7bf" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.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_OperatingIncomeLoss_0a0ba34c-3d9f-4d2d-98cd-50febdc8006c" xlink:to="loc_us-gaap_SellingGeneralAndAdministrativeExpense_f2ffce6b-b63d-43f7-9370-7e8b6cebc7bf" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringCharges_cf7ae0b7-3323-4b13-9373-0e741ced6c14" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RestructuringCharges"/>
    <link:calculationArc order="3" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingIncomeLoss_0a0ba34c-3d9f-4d2d-98cd-50febdc8006c" xlink:to="loc_us-gaap_RestructuringCharges_cf7ae0b7-3323-4b13-9373-0e741ced6c14" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GrossProfit_d10f13a9-f4b7-4bcb-b67a-bbc97fa78638" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_GrossProfit"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_054ed685-749e-4e36-8443-0f9f3fcb0d9a" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.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_d10f13a9-f4b7-4bcb-b67a-bbc97fa78638" xlink:to="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_054ed685-749e-4e36-8443-0f9f3fcb0d9a" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CostOfGoodsAndServicesSold_1f9438b1-7bd7-480e-9b6a-8f7689d0ac96" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_CostOfGoodsAndServicesSold"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_GrossProfit_d10f13a9-f4b7-4bcb-b67a-bbc97fa78638" xlink:to="loc_us-gaap_CostOfGoodsAndServicesSold_1f9438b1-7bd7-480e-9b6a-8f7689d0ac96" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_8f150ec5-35f1-4e11-a2bd-ca78e6c6bc4e" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_NetIncomeLoss"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments_91525741-8466-4999-a9e4-5b99f061cc23" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetIncomeLoss_8f150ec5-35f1-4e11-a2bd-ca78e6c6bc4e" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments_91525741-8466-4999-a9e4-5b99f061cc23" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxExpenseBenefit_d8a4df23-5590-45ac-871f-1e8aec3edef7" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.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_8f150ec5-35f1-4e11-a2bd-ca78e6c6bc4e" xlink:to="loc_us-gaap_IncomeTaxExpenseBenefit_d8a4df23-5590-45ac-871f-1e8aec3edef7" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.ducommun.com/role/CondensedConsolidatedStatementsofComprehensiveIncome" xlink:type="simple" xlink:href="dco-20210703.xsd#CondensedConsolidatedStatementsofComprehensiveIncome"/>
  <link:calculationLink xlink:role="http://www.ducommun.com/role/CondensedConsolidatedStatementsofComprehensiveIncome" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_ce413110-9bb3-4e0b-a11c-d6f11794cef4" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTax"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditNetOfTax_e95dd50e-738a-4959-9b19-5c4a36f1f6da" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditNetOfTax"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_ce413110-9bb3-4e0b-a11c-d6f11794cef4" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditNetOfTax_e95dd50e-738a-4959-9b19-5c4a36f1f6da" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax_98487e67-cda8-402e-9bd0-0b8fc2611254" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_ce413110-9bb3-4e0b-a11c-d6f11794cef4" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax_98487e67-cda8-402e-9bd0-0b8fc2611254" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ComprehensiveIncomeNetOfTax_41c044e4-c9e3-498b-9130-e71f2bddb432" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ComprehensiveIncomeNetOfTax"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_fa33ec2e-e361-4c46-85e5-2d0a9ace513f" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.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_41c044e4-c9e3-498b-9130-e71f2bddb432" xlink:to="loc_us-gaap_NetIncomeLoss_fa33ec2e-e361-4c46-85e5-2d0a9ace513f" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_27cad6b5-0637-432c-8bf4-5131e2333d0c" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTax"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_ComprehensiveIncomeNetOfTax_41c044e4-c9e3-498b-9130-e71f2bddb432" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_27cad6b5-0637-432c-8bf4-5131e2333d0c" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.ducommun.com/role/CondensedConsolidatedStatementsofCashFlows" xlink:type="simple" xlink:href="dco-20210703.xsd#CondensedConsolidatedStatementsofCashFlows"/>
  <link:calculationLink xlink:role="http://www.ducommun.com/role/CondensedConsolidatedStatementsofCashFlows" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_4418acbb-82b5-4b06-a3a1-ef75039e16dc" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_ca16878d-379e-47c2-8ea7-d04f80f41562" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.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_4418acbb-82b5-4b06-a3a1-ef75039e16dc" xlink:to="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_ca16878d-379e-47c2-8ea7-d04f80f41562" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_505ed27f-d204-4c80-af45-2701b4f1feff" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.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_4418acbb-82b5-4b06-a3a1-ef75039e16dc" xlink:to="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_505ed27f-d204-4c80-af45-2701b4f1feff" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_72efcf4e-4f93-4d04-b28f-7c0d93731a20" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.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_4418acbb-82b5-4b06-a3a1-ef75039e16dc" xlink:to="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_72efcf4e-4f93-4d04-b28f-7c0d93731a20" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_865b243e-3ffa-4932-81c6-4e17c4b40101" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivities"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RepaymentsOfLongTermLinesOfCredit_1b8f2987-963e-41e9-b79a-b96596fb1bfc" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RepaymentsOfLongTermLinesOfCredit"/>
    <link:calculationArc order="1" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_865b243e-3ffa-4932-81c6-4e17c4b40101" xlink:to="loc_us-gaap_RepaymentsOfLongTermLinesOfCredit_1b8f2987-963e-41e9-b79a-b96596fb1bfc" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_dco_PaymentsFromIssuanceofStockUnderAwardPlansNet_16008647-377e-42c3-ab04-0dd89f4b735b" xlink:href="dco-20210703.xsd#dco_PaymentsFromIssuanceofStockUnderAwardPlansNet"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_865b243e-3ffa-4932-81c6-4e17c4b40101" xlink:to="loc_dco_PaymentsFromIssuanceofStockUnderAwardPlansNet_16008647-377e-42c3-ab04-0dd89f4b735b" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RepaymentsOfSecuredDebt_aa7c24e7-8cd2-4b67-b53d-32a0cbd132fe" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RepaymentsOfSecuredDebt"/>
    <link:calculationArc order="3" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_865b243e-3ffa-4932-81c6-4e17c4b40101" xlink:to="loc_us-gaap_RepaymentsOfSecuredDebt_aa7c24e7-8cd2-4b67-b53d-32a0cbd132fe" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromSecuredLinesOfCredit_4e28e4e9-a5f0-46e7-b1aa-8a3f583b95de" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ProceedsFromSecuredLinesOfCredit"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_865b243e-3ffa-4932-81c6-4e17c4b40101" xlink:to="loc_us-gaap_ProceedsFromSecuredLinesOfCredit_4e28e4e9-a5f0-46e7-b1aa-8a3f583b95de" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RepaymentsOfOtherDebt_b216369b-ef67-4560-ad50-2fe2d84588bf" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RepaymentsOfOtherDebt"/>
    <link:calculationArc order="5" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_865b243e-3ffa-4932-81c6-4e17c4b40101" xlink:to="loc_us-gaap_RepaymentsOfOtherDebt_b216369b-ef67-4560-ad50-2fe2d84588bf" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_8263eb2e-5bbe-46d7-ad42-d17d4c5ef71c" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivities"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_8257e28e-0387-47df-8227-a4c6523f1e5c" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.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_8263eb2e-5bbe-46d7-ad42-d17d4c5ef71c" xlink:to="loc_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_8257e28e-0387-47df-8227-a4c6523f1e5c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromPreviousAcquisition_caa2ab25-e81c-4d5e-adbf-bf8897fe6a9e" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ProceedsFromPreviousAcquisition"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_8263eb2e-5bbe-46d7-ad42-d17d4c5ef71c" xlink:to="loc_us-gaap_ProceedsFromPreviousAcquisition_caa2ab25-e81c-4d5e-adbf-bf8897fe6a9e" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromSaleOfProductiveAssets_b03cc52e-1f89-4c28-83fe-03f96542f602" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ProceedsFromSaleOfProductiveAssets"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_8263eb2e-5bbe-46d7-ad42-d17d4c5ef71c" xlink:to="loc_us-gaap_ProceedsFromSaleOfProductiveAssets_b03cc52e-1f89-4c28-83fe-03f96542f602" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_f0c63645-f853-46d4-ac2c-d30fa3f6391e" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivities"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInOtherOperatingAssets_65e3d3b5-f5da-48c3-8cf7-3f31a7a13489" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IncreaseDecreaseInOtherOperatingAssets"/>
    <link:calculationArc order="1" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_f0c63645-f853-46d4-ac2c-d30fa3f6391e" xlink:to="loc_us-gaap_IncreaseDecreaseInOtherOperatingAssets_65e3d3b5-f5da-48c3-8cf7-3f31a7a13489" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_e04ac8b9-0eed-438a-b009-5b0a14f3c5f9" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_NetIncomeLoss"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_f0c63645-f853-46d4-ac2c-d30fa3f6391e" xlink:to="loc_us-gaap_NetIncomeLoss_e04ac8b9-0eed-438a-b009-5b0a14f3c5f9" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInAccountsPayable_d227f803-4b72-4c07-8e57-1517c288e2af" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IncreaseDecreaseInAccountsPayable"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_f0c63645-f853-46d4-ac2c-d30fa3f6391e" xlink:to="loc_us-gaap_IncreaseDecreaseInAccountsPayable_d227f803-4b72-4c07-8e57-1517c288e2af" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInAccruedLiabilitiesAndOtherOperatingLiabilities_02712bc3-ba63-4b9a-904e-66586758ccb1" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IncreaseDecreaseInAccruedLiabilitiesAndOtherOperatingLiabilities"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_f0c63645-f853-46d4-ac2c-d30fa3f6391e" xlink:to="loc_us-gaap_IncreaseDecreaseInAccruedLiabilitiesAndOtherOperatingLiabilities_02712bc3-ba63-4b9a-904e-66586758ccb1" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProvisionForDoubtfulAccounts_ffec0e96-a85e-44ee-b71c-ee37248ffe19" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ProvisionForDoubtfulAccounts"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_f0c63645-f853-46d4-ac2c-d30fa3f6391e" xlink:to="loc_us-gaap_ProvisionForDoubtfulAccounts_ffec0e96-a85e-44ee-b71c-ee37248ffe19" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInInventories_c557b082-5534-429f-a4c3-09ef5a478d2e" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IncreaseDecreaseInInventories"/>
    <link:calculationArc order="6" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_f0c63645-f853-46d4-ac2c-d30fa3f6391e" xlink:to="loc_us-gaap_IncreaseDecreaseInInventories_c557b082-5534-429f-a4c3-09ef5a478d2e" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInContractWithCustomerAsset_da033480-1419-4c51-bd4a-50efdc4830b1" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IncreaseDecreaseInContractWithCustomerAsset"/>
    <link:calculationArc order="7" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_f0c63645-f853-46d4-ac2c-d30fa3f6391e" xlink:to="loc_us-gaap_IncreaseDecreaseInContractWithCustomerAsset_da033480-1419-4c51-bd4a-50efdc4830b1" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DepreciationAndAmortization_329ccab4-3f62-401a-900a-cd4c90615c23" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DepreciationAndAmortization"/>
    <link:calculationArc order="8" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_f0c63645-f853-46d4-ac2c-d30fa3f6391e" xlink:to="loc_us-gaap_DepreciationAndAmortization_329ccab4-3f62-401a-900a-cd4c90615c23" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_dco_IncreaseDecreaseinProductionCostofContract_97e84cb0-b39b-45a9-a6b9-05f40599dcb4" xlink:href="dco-20210703.xsd#dco_IncreaseDecreaseinProductionCostofContract"/>
    <link:calculationArc order="9" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_f0c63645-f853-46d4-ac2c-d30fa3f6391e" xlink:to="loc_dco_IncreaseDecreaseinProductionCostofContract_97e84cb0-b39b-45a9-a6b9-05f40599dcb4" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensation_346e00f2-35c5-434b-ae25-0464dfa203c9" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ShareBasedCompensation"/>
    <link:calculationArc order="10" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_f0c63645-f853-46d4-ac2c-d30fa3f6391e" xlink:to="loc_us-gaap_ShareBasedCompensation_346e00f2-35c5-434b-ae25-0464dfa203c9" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_dco_RightOfUseAssetAmortization_8c903651-485c-465e-9011-db84b5075751" xlink:href="dco-20210703.xsd#dco_RightOfUseAssetAmortization"/>
    <link:calculationArc order="11" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_f0c63645-f853-46d4-ac2c-d30fa3f6391e" xlink:to="loc_dco_RightOfUseAssetAmortization_8c903651-485c-465e-9011-db84b5075751" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInAccountsReceivable_07a1421f-b3fe-45c1-bdde-bc3624b23f5e" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IncreaseDecreaseInAccountsReceivable"/>
    <link:calculationArc order="12" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_f0c63645-f853-46d4-ac2c-d30fa3f6391e" xlink:to="loc_us-gaap_IncreaseDecreaseInAccountsReceivable_07a1421f-b3fe-45c1-bdde-bc3624b23f5e" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInContractWithCustomerLiability_4cf3f19c-3f09-4135-9e2c-2e81dc528ac0" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IncreaseDecreaseInContractWithCustomerLiability"/>
    <link:calculationArc order="13" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_f0c63645-f853-46d4-ac2c-d30fa3f6391e" xlink:to="loc_us-gaap_IncreaseDecreaseInContractWithCustomerLiability_4cf3f19c-3f09-4135-9e2c-2e81dc528ac0" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherNoncashIncomeExpense_32470d07-a533-4bf6-b737-7a73f2039b4f" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OtherNoncashIncomeExpense"/>
    <link:calculationArc order="14" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_f0c63645-f853-46d4-ac2c-d30fa3f6391e" xlink:to="loc_us-gaap_OtherNoncashIncomeExpense_32470d07-a533-4bf6-b737-7a73f2039b4f" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredIncomeTaxesAndTaxCredits_ba843e82-6ccf-45b7-ba66-10376001ad25" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DeferredIncomeTaxesAndTaxCredits"/>
    <link:calculationArc order="15" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_f0c63645-f853-46d4-ac2c-d30fa3f6391e" xlink:to="loc_us-gaap_DeferredIncomeTaxesAndTaxCredits_ba843e82-6ccf-45b7-ba66-10376001ad25" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInOperatingLeaseLiability_d4590795-85a5-40a7-8a8a-61e31c28719e" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IncreaseDecreaseInOperatingLeaseLiability"/>
    <link:calculationArc order="16" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_f0c63645-f853-46d4-ac2c-d30fa3f6391e" xlink:to="loc_us-gaap_IncreaseDecreaseInOperatingLeaseLiability_d4590795-85a5-40a7-8a8a-61e31c28719e" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.ducommun.com/role/SummaryofSignificantAccountingPoliciesWeightedAverageNumberofSharesOutstandingUsedtoComputeEarningsPerShareDetails" xlink:type="simple" xlink:href="dco-20210703.xsd#SummaryofSignificantAccountingPoliciesWeightedAverageNumberofSharesOutstandingUsedtoComputeEarningsPerShareDetails"/>
  <link:calculationLink xlink:role="http://www.ducommun.com/role/SummaryofSignificantAccountingPoliciesWeightedAverageNumberofSharesOutstandingUsedtoComputeEarningsPerShareDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_054495d2-6b06-4620-b581-4e45c8ef64c3" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_211f8e14-4dfb-49be-b473-74f4dc308d1a" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.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_054495d2-6b06-4620-b581-4e45c8ef64c3" xlink:to="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_211f8e14-4dfb-49be-b473-74f4dc308d1a" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustment_3bd984eb-ce56-4a38-8b4c-f2721c036610" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustment"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_054495d2-6b06-4620-b581-4e45c8ef64c3" xlink:to="loc_us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustment_3bd984eb-ce56-4a38-8b4c-f2721c036610" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.ducommun.com/role/InventoriesDetails" xlink:type="simple" xlink:href="dco-20210703.xsd#InventoriesDetails"/>
  <link:calculationLink xlink:role="http://www.ducommun.com/role/InventoriesDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InventoryNet_0616ff6c-5b87-4999-aa6b-3773f54edd1b" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_InventoryNet"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InventoryRawMaterialsAndSuppliesNetOfReserves_717f9c90-cf60-4d79-aeb6-59084779f446" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_InventoryRawMaterialsAndSuppliesNetOfReserves"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_InventoryNet_0616ff6c-5b87-4999-aa6b-3773f54edd1b" xlink:to="loc_us-gaap_InventoryRawMaterialsAndSuppliesNetOfReserves_717f9c90-cf60-4d79-aeb6-59084779f446" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InventoryWorkInProcessNetOfReserves_999dd527-0731-4cd6-8bd9-828e756e7733" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_InventoryWorkInProcessNetOfReserves"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_InventoryNet_0616ff6c-5b87-4999-aa6b-3773f54edd1b" xlink:to="loc_us-gaap_InventoryWorkInProcessNetOfReserves_999dd527-0731-4cd6-8bd9-828e756e7733" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InventoryFinishedGoodsNetOfReserves_23c9c2b2-6c1e-4ac3-bf59-e1876f9eb0af" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_InventoryFinishedGoodsNetOfReserves"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_InventoryNet_0616ff6c-5b87-4999-aa6b-3773f54edd1b" xlink:to="loc_us-gaap_InventoryFinishedGoodsNetOfReserves_23c9c2b2-6c1e-4ac3-bf59-e1876f9eb0af" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.ducommun.com/role/GoodwillDetails" xlink:type="simple" xlink:href="dco-20210703.xsd#GoodwillDetails"/>
  <link:calculationLink xlink:role="http://www.ducommun.com/role/GoodwillDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Goodwill_8192c683-4127-4dba-a619-a13b00424e47" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_Goodwill"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GoodwillGross_5a2feeb9-2f28-47fb-ac9e-9ba00a9f9688" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_GoodwillGross"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Goodwill_8192c683-4127-4dba-a619-a13b00424e47" xlink:to="loc_us-gaap_GoodwillGross_5a2feeb9-2f28-47fb-ac9e-9ba00a9f9688" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GoodwillImpairedAccumulatedImpairmentLoss_e8647974-38cc-4e88-b82a-ae6662630bb5" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_GoodwillImpairedAccumulatedImpairmentLoss"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Goodwill_8192c683-4127-4dba-a619-a13b00424e47" xlink:to="loc_us-gaap_GoodwillImpairedAccumulatedImpairmentLoss_e8647974-38cc-4e88-b82a-ae6662630bb5" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.ducommun.com/role/AccruedandOtherLiabilitiesDetails" xlink:type="simple" xlink:href="dco-20210703.xsd#AccruedandOtherLiabilitiesDetails"/>
  <link:calculationLink xlink:role="http://www.ducommun.com/role/AccruedandOtherLiabilitiesDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccruedLiabilitiesCurrent_49dfef1f-a588-4e04-b809-2a2d06214d6b" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AccruedLiabilitiesCurrent"/>
    <link:loc xlink:type="locator" xlink:label="loc_dco_AccruedCompensationCurrent_96e27461-d1b1-48ab-89c5-327046874c0e" xlink:href="dco-20210703.xsd#dco_AccruedCompensationCurrent"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AccruedLiabilitiesCurrent_49dfef1f-a588-4e04-b809-2a2d06214d6b" xlink:to="loc_dco_AccruedCompensationCurrent_96e27461-d1b1-48ab-89c5-327046874c0e" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_dco_AccruedIncomeTaxesAndOtherCurrent_51c61e43-ff68-4a41-a66a-c01618f2ee32" xlink:href="dco-20210703.xsd#dco_AccruedIncomeTaxesAndOtherCurrent"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AccruedLiabilitiesCurrent_49dfef1f-a588-4e04-b809-2a2d06214d6b" xlink:to="loc_dco_AccruedIncomeTaxesAndOtherCurrent_51c61e43-ff68-4a41-a66a-c01618f2ee32" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherAccruedLiabilitiesCurrent_d70eb7fc-d411-487d-a576-349319a5348b" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OtherAccruedLiabilitiesCurrent"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AccruedLiabilitiesCurrent_49dfef1f-a588-4e04-b809-2a2d06214d6b" xlink:to="loc_us-gaap_OtherAccruedLiabilitiesCurrent_d70eb7fc-d411-487d-a576-349319a5348b" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.ducommun.com/role/LongTermDebtSummaryDetails" xlink:type="simple" xlink:href="dco-20210703.xsd#LongTermDebtSummaryDetails"/>
  <link:calculationLink xlink:role="http://www.ducommun.com/role/LongTermDebtSummaryDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentCarryingAmount_2bc64b76-fd68-4458-b3cb-0a4ca4e36b70" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentCarryingAmount"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtNoncurrent_e8a96427-5a42-473a-998a-4b2503c4b6e8" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LongTermDebtNoncurrent"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DebtInstrumentCarryingAmount_2bc64b76-fd68-4458-b3cb-0a4ca4e36b70" xlink:to="loc_us-gaap_LongTermDebtNoncurrent_e8a96427-5a42-473a-998a-4b2503c4b6e8" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtCurrent_68eaf445-eb24-45b9-85c8-3331a8df63ef" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LongTermDebtCurrent"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DebtInstrumentCarryingAmount_2bc64b76-fd68-4458-b3cb-0a4ca4e36b70" xlink:to="loc_us-gaap_LongTermDebtCurrent_68eaf445-eb24-45b9-85c8-3331a8df63ef" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebt_e5f85829-6ce4-4228-b8ee-425f88c6edde" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LongTermDebt"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtNoncurrent_71ae65e8-b83a-4afb-9188-a7b3a607164d" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LongTermDebtNoncurrent"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LongTermDebt_e5f85829-6ce4-4228-b8ee-425f88c6edde" xlink:to="loc_us-gaap_LongTermDebtNoncurrent_71ae65e8-b83a-4afb-9188-a7b3a607164d" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredFinanceCostsNet_590d4573-5c69-40c5-8d4d-3462d97a5275" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DeferredFinanceCostsNet"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LongTermDebt_e5f85829-6ce4-4228-b8ee-425f88c6edde" xlink:to="loc_us-gaap_DeferredFinanceCostsNet_590d4573-5c69-40c5-8d4d-3462d97a5275" xlink:type="arc"/>
  </link:calculationLink>
</link:linkbase>
