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

<!--XBRL Document Created with the Workiva Platform-->
<!--Copyright 2026 Workiva-->
<!--r:01a06d9c-347b-7382-afe0-1e094306beca,g:a85baad1-b279-4cc2-b3a2-088397ccfe23-->
<link:linkbase xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd">
  <link:arcroleRef arcroleURI="https://xbrl.org/2023/arcrole/summation-item" xlink:type="simple" xlink:href="https://www.xbrl.org/2023/calculation-1.1.xsd#summation-item"/>
  <link:roleRef roleURI="http://www.rocketlabusa.com/role/CONDENSEDCONSOLIDATEDBALANCESHEETS" xlink:type="simple" xlink:href="rklb-20260930.xsd#CONDENSEDCONSOLIDATEDBALANCESHEETS"/>
  <link:calculationLink xlink:role="http://www.rocketlabusa.com/role/CONDENSEDCONSOLIDATEDBALANCESHEETS" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Assets_01a06d9c-3601-76d3-adb4-3e3e486d0496" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_Assets"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsCurrent_01a06d9c-3601-790a-9c88-1a459171a5fb" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AssetsCurrent"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_01a06d9c-3601-76d3-adb4-3e3e486d0496" xlink:to="loc_us-gaap_AssetsCurrent_01a06d9c-3601-790a-9c88-1a459171a5fb" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentNet_01a06d9c-3601-7563-8f46-85c1d55220e9" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PropertyPlantAndEquipmentNet"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_01a06d9c-3601-76d3-adb4-3e3e486d0496" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentNet_01a06d9c-3601-7563-8f46-85c1d55220e9" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IntangibleAssetsNetExcludingGoodwill_01a06d9c-3601-7755-9e06-78de09f4688b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IntangibleAssetsNetExcludingGoodwill"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_01a06d9c-3601-76d3-adb4-3e3e486d0496" xlink:to="loc_us-gaap_IntangibleAssetsNetExcludingGoodwill_01a06d9c-3601-7755-9e06-78de09f4688b" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Goodwill_01a06d9c-3601-7fe8-a6b2-660061a85cbb" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_Goodwill"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_01a06d9c-3601-76d3-adb4-3e3e486d0496" xlink:to="loc_us-gaap_Goodwill_01a06d9c-3601-7fe8-a6b2-660061a85cbb" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseRightOfUseAsset_01a06d9c-3601-71d1-8f83-0a01b50fa244" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OperatingLeaseRightOfUseAsset"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_01a06d9c-3601-76d3-adb4-3e3e486d0496" xlink:to="loc_us-gaap_OperatingLeaseRightOfUseAsset_01a06d9c-3601-71d1-8f83-0a01b50fa244" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinanceLeaseRightOfUseAsset_01a06d9c-3601-70d4-8c1e-6ce7e43b050a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinanceLeaseRightOfUseAsset"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_01a06d9c-3601-76d3-adb4-3e3e486d0496" xlink:to="loc_us-gaap_FinanceLeaseRightOfUseAsset_01a06d9c-3601-70d4-8c1e-6ce7e43b050a" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MarketableSecuritiesNoncurrent_01a06d9c-3601-728f-b059-f28dac96d5f6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_MarketableSecuritiesNoncurrent"/>
    <link:calculationArc order="7" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_01a06d9c-3601-76d3-adb4-3e3e486d0496" xlink:to="loc_us-gaap_MarketableSecuritiesNoncurrent_01a06d9c-3601-728f-b059-f28dac96d5f6" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestrictedCashNoncurrent_01a06d9c-3601-725e-ad54-95b2ae0d7d9b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestrictedCashNoncurrent"/>
    <link:calculationArc order="8" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_01a06d9c-3601-76d3-adb4-3e3e486d0496" xlink:to="loc_us-gaap_RestrictedCashNoncurrent_01a06d9c-3601-725e-ad54-95b2ae0d7d9b" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredIncomeTaxAssetsNet_01a06d9c-3601-7106-8fe5-9f807c6cf3c4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DeferredIncomeTaxAssetsNet"/>
    <link:calculationArc order="9" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_01a06d9c-3601-76d3-adb4-3e3e486d0496" xlink:to="loc_us-gaap_DeferredIncomeTaxAssetsNet_01a06d9c-3601-7106-8fe5-9f807c6cf3c4" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherAssetsNoncurrent_01a06d9c-3601-7db1-8a27-8447632ec030" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherAssetsNoncurrent"/>
    <link:calculationArc order="10" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_01a06d9c-3601-76d3-adb4-3e3e486d0496" xlink:to="loc_us-gaap_OtherAssetsNoncurrent_01a06d9c-3601-7db1-8a27-8447632ec030" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsCurrent_01a06d9c-3601-7bd8-a0fe-34752c72a876" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AssetsCurrent"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractWithCustomerAssetNetCurrent_01a06d9c-3601-780f-8e2e-964fcfa0f2db" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ContractWithCustomerAssetNetCurrent"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsCurrent_01a06d9c-3601-7bd8-a0fe-34752c72a876" xlink:to="loc_us-gaap_ContractWithCustomerAssetNetCurrent_01a06d9c-3601-780f-8e2e-964fcfa0f2db" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PrepaidExpenseAndOtherAssetsCurrent_01a06d9c-3601-710e-afd6-31150ce9f77f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PrepaidExpenseAndOtherAssetsCurrent"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsCurrent_01a06d9c-3601-7bd8-a0fe-34752c72a876" xlink:to="loc_us-gaap_PrepaidExpenseAndOtherAssetsCurrent_01a06d9c-3601-710e-afd6-31150ce9f77f" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InventoryNet_01a06d9c-3601-76a8-92c0-58eeeb7a6e03" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InventoryNet"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsCurrent_01a06d9c-3601-7bd8-a0fe-34752c72a876" xlink:to="loc_us-gaap_InventoryNet_01a06d9c-3601-76a8-92c0-58eeeb7a6e03" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsReceivableNetCurrent_01a06d9c-3601-7ab5-95fb-e763b6b2da0e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccountsReceivableNetCurrent"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsCurrent_01a06d9c-3601-7bd8-a0fe-34752c72a876" xlink:to="loc_us-gaap_AccountsReceivableNetCurrent_01a06d9c-3601-7ab5-95fb-e763b6b2da0e" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_01a06d9c-3601-70c6-81c9-a305076bf51c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CashAndCashEquivalentsAtCarryingValue"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsCurrent_01a06d9c-3601-7bd8-a0fe-34752c72a876" xlink:to="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_01a06d9c-3601-70c6-81c9-a305076bf51c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MarketableSecuritiesCurrent_01a06d9c-3601-7e50-8355-ac313c168b25" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_MarketableSecuritiesCurrent"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsCurrent_01a06d9c-3601-7bd8-a0fe-34752c72a876" xlink:to="loc_us-gaap_MarketableSecuritiesCurrent_01a06d9c-3601-7e50-8355-ac313c168b25" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesCurrent_01a06d9c-3601-7cb1-bda3-45755fe8d03c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LiabilitiesCurrent"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsPayableCurrent_01a06d9c-3601-7255-9fa5-393fc87cd9a0" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccountsPayableCurrent"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesCurrent_01a06d9c-3601-7cb1-bda3-45755fe8d03c" xlink:to="loc_us-gaap_AccountsPayableCurrent_01a06d9c-3601-7255-9fa5-393fc87cd9a0" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccruedLiabilitiesCurrent_01a06d9c-3601-7c93-ac3c-ced302087171" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccruedLiabilitiesCurrent"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesCurrent_01a06d9c-3601-7cb1-bda3-45755fe8d03c" xlink:to="loc_us-gaap_AccruedLiabilitiesCurrent_01a06d9c-3601-7c93-ac3c-ced302087171" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmployeeRelatedLiabilitiesCurrent_01a06d9c-3601-792d-b1a1-cf610f268ce2" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EmployeeRelatedLiabilitiesCurrent"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesCurrent_01a06d9c-3601-7cb1-bda3-45755fe8d03c" xlink:to="loc_us-gaap_EmployeeRelatedLiabilitiesCurrent_01a06d9c-3601-792d-b1a1-cf610f268ce2" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractWithCustomerLiabilityCurrent_01a06d9c-3601-746f-97e3-d996aa461e0f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ContractWithCustomerLiabilityCurrent"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesCurrent_01a06d9c-3601-7cb1-bda3-45755fe8d03c" xlink:to="loc_us-gaap_ContractWithCustomerLiabilityCurrent_01a06d9c-3601-746f-97e3-d996aa461e0f" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherLiabilitiesCurrent_01a06d9c-3601-78d9-bcd9-bd7ca1d7d11e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherLiabilitiesCurrent"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesCurrent_01a06d9c-3601-7cb1-bda3-45755fe8d03c" xlink:to="loc_us-gaap_OtherLiabilitiesCurrent_01a06d9c-3601-78d9-bcd9-bd7ca1d7d11e" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquity_01a06d9c-3601-72ef-b096-4f0a6210ad1f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockholdersEquity"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdditionalPaidInCapital_01a06d9c-3601-74be-af7d-8306cb21e223" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AdditionalPaidInCapital"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquity_01a06d9c-3601-72ef-b096-4f0a6210ad1f" xlink:to="loc_us-gaap_AdditionalPaidInCapital_01a06d9c-3601-74be-af7d-8306cb21e223" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PreferredStockValue_01a06d9c-3601-748d-9356-8f9bbc8dd206" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PreferredStockValue"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquity_01a06d9c-3601-72ef-b096-4f0a6210ad1f" xlink:to="loc_us-gaap_PreferredStockValue_01a06d9c-3601-748d-9356-8f9bbc8dd206" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetainedEarningsAccumulatedDeficit_01a06d9c-3601-7fa6-a566-acf0a01d4a48" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RetainedEarningsAccumulatedDeficit"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquity_01a06d9c-3601-72ef-b096-4f0a6210ad1f" xlink:to="loc_us-gaap_RetainedEarningsAccumulatedDeficit_01a06d9c-3601-7fa6-a566-acf0a01d4a48" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TreasuryStockCommonValue_01a06d9c-3601-7824-a85c-04624031e319" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_TreasuryStockCommonValue"/>
    <link:calculationArc order="4" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquity_01a06d9c-3601-72ef-b096-4f0a6210ad1f" xlink:to="loc_us-gaap_TreasuryStockCommonValue_01a06d9c-3601-7824-a85c-04624031e319" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_01a06d9c-3601-73d4-abd1-dfb68357f1ed" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquity_01a06d9c-3601-72ef-b096-4f0a6210ad1f" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_01a06d9c-3601-73d4-abd1-dfb68357f1ed" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockValue_01a06d9c-3601-7991-96a0-61ffdac923cf" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommonStockValue"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquity_01a06d9c-3601-72ef-b096-4f0a6210ad1f" xlink:to="loc_us-gaap_CommonStockValue_01a06d9c-3601-7991-96a0-61ffdac923cf" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesAndStockholdersEquity_01a06d9c-3601-70b3-98ca-daaed8ce1d9b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LiabilitiesAndStockholdersEquity"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquity_01a06d9c-3601-714f-9adf-fff368729cc9" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockholdersEquity"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquity_01a06d9c-3601-70b3-98ca-daaed8ce1d9b" xlink:to="loc_us-gaap_StockholdersEquity_01a06d9c-3601-714f-9adf-fff368729cc9" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Liabilities_01a06d9c-3601-7b78-8950-1eb9e2378c70" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_Liabilities"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquity_01a06d9c-3601-70b3-98ca-daaed8ce1d9b" xlink:to="loc_us-gaap_Liabilities_01a06d9c-3601-7b78-8950-1eb9e2378c70" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommitmentsAndContingencies_01a06d9c-3601-76d4-bab7-e2f75e2d381b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommitmentsAndContingencies"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquity_01a06d9c-3601-70b3-98ca-daaed8ce1d9b" xlink:to="loc_us-gaap_CommitmentsAndContingencies_01a06d9c-3601-76d4-bab7-e2f75e2d381b" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Liabilities_01a06d9c-3601-7d65-8e66-2891cb28186f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_Liabilities"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesCurrent_01a06d9c-3601-72c1-84a4-f56fe83a19dc" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LiabilitiesCurrent"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities_01a06d9c-3601-7d65-8e66-2891cb28186f" xlink:to="loc_us-gaap_LiabilitiesCurrent_01a06d9c-3601-72c1-84a4-f56fe83a19dc" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseLiabilityNoncurrent_01a06d9c-3601-713b-942a-646d1a0d1c93" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OperatingLeaseLiabilityNoncurrent"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities_01a06d9c-3601-7d65-8e66-2891cb28186f" xlink:to="loc_us-gaap_OperatingLeaseLiabilityNoncurrent_01a06d9c-3601-713b-942a-646d1a0d1c93" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebt_01a06d9c-3601-7b50-be8b-8549fdbb3e8f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongTermDebt"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities_01a06d9c-3601-7d65-8e66-2891cb28186f" xlink:to="loc_us-gaap_LongTermDebt_01a06d9c-3601-7b50-be8b-8549fdbb3e8f" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinanceLeaseLiabilityNoncurrent_01a06d9c-3601-79d0-ad75-68e2857d9ee6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinanceLeaseLiabilityNoncurrent"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities_01a06d9c-3601-7d65-8e66-2891cb28186f" xlink:to="loc_us-gaap_FinanceLeaseLiabilityNoncurrent_01a06d9c-3601-79d0-ad75-68e2857d9ee6" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredIncomeTaxLiabilitiesNet_01a06d9c-3601-7952-8db5-e56264becfc9" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DeferredIncomeTaxLiabilitiesNet"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities_01a06d9c-3601-7d65-8e66-2891cb28186f" xlink:to="loc_us-gaap_DeferredIncomeTaxLiabilitiesNet_01a06d9c-3601-7952-8db5-e56264becfc9" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherLiabilitiesNoncurrent_01a06d9c-3601-7546-a753-bbc99d14b1f3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherLiabilitiesNoncurrent"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities_01a06d9c-3601-7d65-8e66-2891cb28186f" xlink:to="loc_us-gaap_OtherLiabilitiesNoncurrent_01a06d9c-3601-7546-a753-bbc99d14b1f3" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtNoncurrent_01a06d9c-3601-747b-85ed-c018f5145fd7" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongTermDebtNoncurrent"/>
    <link:calculationArc order="7" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities_01a06d9c-3601-7d65-8e66-2891cb28186f" xlink:to="loc_us-gaap_LongTermDebtNoncurrent_01a06d9c-3601-747b-85ed-c018f5145fd7" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.rocketlabusa.com/role/CONDENSEDCONSOLIDATEDSTATEMENTSOFOPERATIONSANDCOMPREHENSIVELOSS" xlink:type="simple" xlink:href="rklb-20260930.xsd#CONDENSEDCONSOLIDATEDSTATEMENTSOFOPERATIONSANDCOMPREHENSIVELOSS"/>
  <link:calculationLink xlink:role="http://www.rocketlabusa.com/role/CONDENSEDCONSOLIDATEDSTATEMENTSOFOPERATIONSANDCOMPREHENSIVELOSS" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_01a06d9c-3601-7102-ba2d-58e926888a50" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NetIncomeLoss"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_01a06d9c-3601-73ff-8bb9-2d781f2b5314" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetIncomeLoss_01a06d9c-3601-7102-ba2d-58e926888a50" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_01a06d9c-3601-73ff-8bb9-2d781f2b5314" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxExpenseBenefit_01a06d9c-3601-72e3-bece-3010496fd131" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncomeTaxExpenseBenefit"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetIncomeLoss_01a06d9c-3601-7102-ba2d-58e926888a50" xlink:to="loc_us-gaap_IncomeTaxExpenseBenefit_01a06d9c-3601-72e3-bece-3010496fd131" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_01a06d9c-3601-7910-a81d-7a273543671d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingIncomeLoss_01a06d9c-3601-7b62-881e-6e124d87b3d5" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OperatingIncomeLoss"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_01a06d9c-3601-7910-a81d-7a273543671d" xlink:to="loc_us-gaap_OperatingIncomeLoss_01a06d9c-3601-7b62-881e-6e124d87b3d5" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NonoperatingIncomeExpense_01a06d9c-3601-7901-bb24-58088cbf920e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NonoperatingIncomeExpense"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_01a06d9c-3601-7910-a81d-7a273543671d" xlink:to="loc_us-gaap_NonoperatingIncomeExpense_01a06d9c-3601-7901-bb24-58088cbf920e" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NonoperatingIncomeExpense_01a06d9c-3601-706d-a3d3-ab75f40cf43b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NonoperatingIncomeExpense"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestExpenseNonoperating_01a06d9c-3601-789f-9416-05b820308b01" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InterestExpenseNonoperating"/>
    <link:calculationArc order="1" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NonoperatingIncomeExpense_01a06d9c-3601-706d-a3d3-ab75f40cf43b" xlink:to="loc_us-gaap_InterestExpenseNonoperating_01a06d9c-3601-789f-9416-05b820308b01" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentIncomeNonoperating_01a06d9c-3601-7af3-834e-2df9ca9a1f4f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InvestmentIncomeNonoperating"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NonoperatingIncomeExpense_01a06d9c-3601-706d-a3d3-ab75f40cf43b" xlink:to="loc_us-gaap_InvestmentIncomeNonoperating_01a06d9c-3601-7af3-834e-2df9ca9a1f4f" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ForeignCurrencyTransactionGainLossBeforeTax_01a06d9c-3601-7aa3-adf8-5717edb964ef" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ForeignCurrencyTransactionGainLossBeforeTax"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NonoperatingIncomeExpense_01a06d9c-3601-706d-a3d3-ab75f40cf43b" xlink:to="loc_us-gaap_ForeignCurrencyTransactionGainLossBeforeTax_01a06d9c-3601-7aa3-adf8-5717edb964ef" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherNonoperatingIncomeExpense_01a06d9c-3601-77aa-9c8c-85751004cbaa" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherNonoperatingIncomeExpense"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NonoperatingIncomeExpense_01a06d9c-3601-706d-a3d3-ab75f40cf43b" xlink:to="loc_us-gaap_OtherNonoperatingIncomeExpense_01a06d9c-3601-77aa-9c8c-85751004cbaa" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GainsLossesOnExtinguishmentOfDebt_01a13dda-8992-7c2a-8a44-2f15f8021319" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_GainsLossesOnExtinguishmentOfDebt"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NonoperatingIncomeExpense_01a06d9c-3601-706d-a3d3-ab75f40cf43b" xlink:to="loc_us-gaap_GainsLossesOnExtinguishmentOfDebt_01a13dda-8992-7c2a-8a44-2f15f8021319" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GrossProfit_01a06d9c-3601-78c9-9875-00bbd42dbcaa" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_GrossProfit"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_01a06d9c-3601-70ba-acaf-c67238d31293" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_GrossProfit_01a06d9c-3601-78c9-9875-00bbd42dbcaa" xlink:to="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_01a06d9c-3601-70ba-acaf-c67238d31293" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CostOfRevenue_01a06d9c-3601-7d1a-9fb8-3c55a30d4bf0" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CostOfRevenue"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_GrossProfit_01a06d9c-3601-78c9-9875-00bbd42dbcaa" xlink:to="loc_us-gaap_CostOfRevenue_01a06d9c-3601-7d1a-9fb8-3c55a30d4bf0" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ComprehensiveIncomeNetOfTax_01a06d9c-3601-78d9-bda3-879ccd5e9001" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ComprehensiveIncomeNetOfTax"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax_01a06d9c-3601-7dc3-a4b7-dea427cb1af9" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_ComprehensiveIncomeNetOfTax_01a06d9c-3601-78d9-bda3-879ccd5e9001" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax_01a06d9c-3601-7dc3-a4b7-dea427cb1af9" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax_01a06d9c-3601-70d5-b96f-1884cb702873" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_ComprehensiveIncomeNetOfTax_01a06d9c-3601-78d9-bda3-879ccd5e9001" xlink:to="loc_us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax_01a06d9c-3601-70d5-b96f-1884cb702873" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_01a06d9c-3601-7b4b-a949-ce113bc11e76" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NetIncomeLoss"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_ComprehensiveIncomeNetOfTax_01a06d9c-3601-78d9-bda3-879ccd5e9001" xlink:to="loc_us-gaap_NetIncomeLoss_01a06d9c-3601-7b4b-a949-ce113bc11e76" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingExpenses_01a06d9c-3601-78d7-acc7-91309fa7a1c4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OperatingExpenses"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SellingGeneralAndAdministrativeExpense_01a06d9c-3601-795c-9436-9d71895fd724" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SellingGeneralAndAdministrativeExpense"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingExpenses_01a06d9c-3601-78d7-acc7-91309fa7a1c4" xlink:to="loc_us-gaap_SellingGeneralAndAdministrativeExpense_01a06d9c-3601-795c-9436-9d71895fd724" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ResearchAndDevelopmentExpense_01a06d9c-3601-7da0-b174-8811f0cf5709" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ResearchAndDevelopmentExpense"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingExpenses_01a06d9c-3601-78d7-acc7-91309fa7a1c4" xlink:to="loc_us-gaap_ResearchAndDevelopmentExpense_01a06d9c-3601-7da0-b174-8811f0cf5709" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingIncomeLoss_01a06d9c-3601-736c-a9fc-ea8960c54494" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OperatingIncomeLoss"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GrossProfit_01a06d9c-3601-7624-b8ba-f89a2e0d052c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_GrossProfit"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingIncomeLoss_01a06d9c-3601-736c-a9fc-ea8960c54494" xlink:to="loc_us-gaap_GrossProfit_01a06d9c-3601-7624-b8ba-f89a2e0d052c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingExpenses_01a06d9c-3601-7a06-a0cd-6391bfcc1b48" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OperatingExpenses"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingIncomeLoss_01a06d9c-3601-736c-a9fc-ea8960c54494" xlink:to="loc_us-gaap_OperatingExpenses_01a06d9c-3601-7a06-a0cd-6391bfcc1b48" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.rocketlabusa.com/role/CONDENSEDCONSOLIDATEDSTATEMENTSOFCASHFLOWS" xlink:type="simple" xlink:href="rklb-20260930.xsd#CONDENSEDCONSOLIDATEDSTATEMENTSOFCASHFLOWS"/>
  <link:calculationLink xlink:role="http://www.rocketlabusa.com/role/CONDENSEDCONSOLIDATEDSTATEMENTSOFCASHFLOWS" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_01a06d9c-3601-75cd-baa6-7bb2c706f703" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_01a06d9c-3601-758e-833c-cb4508cb3891" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivities"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_01a06d9c-3601-75cd-baa6-7bb2c706f703" xlink:to="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_01a06d9c-3601-758e-833c-cb4508cb3891" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_01a06d9c-3601-7a04-a8c9-c6690e6b8478" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivities"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_01a06d9c-3601-75cd-baa6-7bb2c706f703" xlink:to="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_01a06d9c-3601-7a04-a8c9-c6690e6b8478" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_01a06d9c-3601-70e6-a80d-b2def9497958" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivities"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_01a06d9c-3601-75cd-baa6-7bb2c706f703" xlink:to="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_01a06d9c-3601-70e6-a80d-b2def9497958" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_01a06d9c-3601-7580-8c30-2dee6e369518" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_01a06d9c-3601-75cd-baa6-7bb2c706f703" xlink:to="loc_us-gaap_EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_01a06d9c-3601-7580-8c30-2dee6e369518" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_01a06d9c-3601-72e2-a573-438b1f0f2055" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivities"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromIssuanceOfCommonStock_01a06d9c-3601-7120-95b8-968dee40122c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ProceedsFromIssuanceOfCommonStock"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_01a06d9c-3601-72e2-a573-438b1f0f2055" xlink:to="loc_us-gaap_ProceedsFromIssuanceOfCommonStock_01a06d9c-3601-7120-95b8-968dee40122c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsOfStockIssuanceCosts_01a06d9c-3601-78ff-afaf-0e0be92d439e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PaymentsOfStockIssuanceCosts"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_01a06d9c-3601-72e2-a573-438b1f0f2055" xlink:to="loc_us-gaap_PaymentsOfStockIssuanceCosts_01a06d9c-3601-78ff-afaf-0e0be92d439e" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromStockOptionsExercised_01a06d9c-3601-736a-98dd-a61e6fae73a1" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ProceedsFromStockOptionsExercised"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_01a06d9c-3601-72e2-a573-438b1f0f2055" xlink:to="loc_us-gaap_ProceedsFromStockOptionsExercised_01a06d9c-3601-736a-98dd-a61e6fae73a1" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromRepaymentOfLoansByEmployeeStockOwnershipPlans_01a06d9c-3601-74f8-93ae-b1e9599e5aa8" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ProceedsFromRepaymentOfLoansByEmployeeStockOwnershipPlans"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_01a06d9c-3601-72e2-a573-438b1f0f2055" xlink:to="loc_us-gaap_ProceedsFromRepaymentOfLoansByEmployeeStockOwnershipPlans_01a06d9c-3601-74f8-93ae-b1e9599e5aa8" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_rklb_ProceedsFromSaleOfEmployeesRestrictedStockUnitsToCoverTaxes_01a06d9c-3601-7ff4-a7b4-ea431bfd3608" xlink:href="rklb-20260930.xsd#rklb_ProceedsFromSaleOfEmployeesRestrictedStockUnitsToCoverTaxes"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_01a06d9c-3601-72e2-a573-438b1f0f2055" xlink:to="loc_rklb_ProceedsFromSaleOfEmployeesRestrictedStockUnitsToCoverTaxes_01a06d9c-3601-7ff4-a7b4-ea431bfd3608" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestrictedStockValueSharesIssuedNetOfTaxWithholdings_01a06d9c-3601-7469-963a-52ea504e5e4f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestrictedStockValueSharesIssuedNetOfTaxWithholdings"/>
    <link:calculationArc order="6" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_01a06d9c-3601-72e2-a573-438b1f0f2055" xlink:to="loc_us-gaap_RestrictedStockValueSharesIssuedNetOfTaxWithholdings_01a06d9c-3601-7469-963a-52ea504e5e4f" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromIssuanceOfSecuredDebt_01a06d9c-3601-7f10-9f2a-e358743fff54" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ProceedsFromIssuanceOfSecuredDebt"/>
    <link:calculationArc order="7" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_01a06d9c-3601-72e2-a573-438b1f0f2055" xlink:to="loc_us-gaap_ProceedsFromIssuanceOfSecuredDebt_01a06d9c-3601-7f10-9f2a-e358743fff54" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RepaymentsOfSecuredDebt_01a06d9c-3601-7446-b0e0-4581e274edf2" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RepaymentsOfSecuredDebt"/>
    <link:calculationArc order="8" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_01a06d9c-3601-72e2-a573-438b1f0f2055" xlink:to="loc_us-gaap_RepaymentsOfSecuredDebt_01a06d9c-3601-7446-b0e0-4581e274edf2" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_rklb_PaymentsOfDebtIssuanceCostsAndExtinguishmentCosts_01a06d9c-3601-7b2f-adae-6db7d989432f" xlink:href="rklb-20260930.xsd#rklb_PaymentsOfDebtIssuanceCostsAndExtinguishmentCosts"/>
    <link:calculationArc order="9" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_01a06d9c-3601-72e2-a573-438b1f0f2055" xlink:to="loc_rklb_PaymentsOfDebtIssuanceCostsAndExtinguishmentCosts_01a06d9c-3601-7b2f-adae-6db7d989432f" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinanceLeasePrincipalPayments_01a06d9c-3601-796e-8c3a-fd71d3e725df" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinanceLeasePrincipalPayments"/>
    <link:calculationArc order="10" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_01a06d9c-3601-72e2-a573-438b1f0f2055" xlink:to="loc_us-gaap_FinanceLeasePrincipalPayments_01a06d9c-3601-796e-8c3a-fd71d3e725df" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_01a06d9c-3601-72e0-a33f-606c302dd0ea" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivities"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_01a06d9c-3601-7539-aaeb-fdd9b5141445" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PaymentsToAcquirePropertyPlantAndEquipment"/>
    <link:calculationArc order="1" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_01a06d9c-3601-72e0-a33f-606c302dd0ea" xlink:to="loc_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_01a06d9c-3601-7539-aaeb-fdd9b5141445" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment_01a06d9c-3601-7782-abc1-2ba270d7eedf" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_01a06d9c-3601-72e0-a33f-606c302dd0ea" xlink:to="loc_us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment_01a06d9c-3601-7782-abc1-2ba270d7eedf" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired_01a06d9c-3601-77b1-a4a5-85ca42af2998" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired"/>
    <link:calculationArc order="3" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_01a06d9c-3601-72e0-a33f-606c302dd0ea" xlink:to="loc_us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired_01a06d9c-3601-77b1-a4a5-85ca42af2998" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsToAcquireMarketableSecurities_01a06d9c-3601-7342-a0f6-2e371e69def0" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PaymentsToAcquireMarketableSecurities"/>
    <link:calculationArc order="4" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_01a06d9c-3601-72e0-a33f-606c302dd0ea" xlink:to="loc_us-gaap_PaymentsToAcquireMarketableSecurities_01a06d9c-3601-7342-a0f6-2e371e69def0" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_rklb_ProceedsFromMaturitiesOfMarketableSecurities_01a06d9c-3601-737c-b1fc-f8852ad41761" xlink:href="rklb-20260930.xsd#rklb_ProceedsFromMaturitiesOfMarketableSecurities"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_01a06d9c-3601-72e0-a33f-606c302dd0ea" xlink:to="loc_rklb_ProceedsFromMaturitiesOfMarketableSecurities_01a06d9c-3601-737c-b1fc-f8852ad41761" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_rklb_ProceedsFromSaleOfMarketableSecurities_01a06d9c-3601-71ba-9acf-6767f563046b" xlink:href="rklb-20260930.xsd#rklb_ProceedsFromSaleOfMarketableSecurities"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_01a06d9c-3601-72e0-a33f-606c302dd0ea" xlink:to="loc_rklb_ProceedsFromSaleOfMarketableSecurities_01a06d9c-3601-71ba-9acf-6767f563046b" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_01a06d9c-3601-7199-8afb-3f98d071f1fd" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivities"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProfitLoss_01a06d9c-3601-7274-b737-b72b6ad0ebab" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ProfitLoss"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_01a06d9c-3601-7199-8afb-3f98d071f1fd" xlink:to="loc_us-gaap_ProfitLoss_01a06d9c-3601-7274-b737-b72b6ad0ebab" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DepreciationAndAmortization_01a06d9c-3601-7e28-840c-98f6d96eb525" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DepreciationAndAmortization"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_01a06d9c-3601-7199-8afb-3f98d071f1fd" xlink:to="loc_us-gaap_DepreciationAndAmortization_01a06d9c-3601-7e28-840c-98f6d96eb525" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensation_01a06d9c-3601-7248-9c54-ef8e354bdf5e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensation"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_01a06d9c-3601-7199-8afb-3f98d071f1fd" xlink:to="loc_us-gaap_ShareBasedCompensation_01a06d9c-3601-7248-9c54-ef8e354bdf5e" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GainLossOnDispositionOfAssets1_01a06d9c-3601-77a7-87d8-2e23c8ca4a83" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_GainLossOnDispositionOfAssets1"/>
    <link:calculationArc order="4" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_01a06d9c-3601-7199-8afb-3f98d071f1fd" xlink:to="loc_us-gaap_GainLossOnDispositionOfAssets1_01a06d9c-3601-77a7-87d8-2e23c8ca4a83" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InventoryWriteDown_01a06d9c-3601-7700-a152-0d6b1ad0164c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InventoryWriteDown"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_01a06d9c-3601-7199-8afb-3f98d071f1fd" xlink:to="loc_us-gaap_InventoryWriteDown_01a06d9c-3601-7700-a152-0d6b1ad0164c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AmortizationOfFinancingCosts_01a06d9c-3601-7ffe-82a0-7b42a035436c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AmortizationOfFinancingCosts"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_01a06d9c-3601-7199-8afb-3f98d071f1fd" xlink:to="loc_us-gaap_AmortizationOfFinancingCosts_01a06d9c-3601-7ffe-82a0-7b42a035436c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NoncashContributionExpense_01a06d9c-3601-764e-888e-f85c418273c8" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NoncashContributionExpense"/>
    <link:calculationArc order="7" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_01a06d9c-3601-7199-8afb-3f98d071f1fd" xlink:to="loc_us-gaap_NoncashContributionExpense_01a06d9c-3601-764e-888e-f85c418273c8" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1_01a06d9c-3601-727f-9208-d4469dae64fb" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1"/>
    <link:calculationArc order="8" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_01a06d9c-3601-7199-8afb-3f98d071f1fd" xlink:to="loc_us-gaap_BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1_01a06d9c-3601-727f-9208-d4469dae64fb" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccretionAmortizationOfDiscountsAndPremiumsInvestments_01a06d9c-3601-7192-a08b-b4bff25c21d1" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccretionAmortizationOfDiscountsAndPremiumsInvestments"/>
    <link:calculationArc order="9" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_01a06d9c-3601-7199-8afb-3f98d071f1fd" xlink:to="loc_us-gaap_AccretionAmortizationOfDiscountsAndPremiumsInvestments_01a06d9c-3601-7192-a08b-b4bff25c21d1" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredIncomeTaxesAndTaxCredits_01a06d9c-3601-7318-88b6-a6eebc4bf1ea" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DeferredIncomeTaxesAndTaxCredits"/>
    <link:calculationArc order="10" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_01a06d9c-3601-7199-8afb-3f98d071f1fd" xlink:to="loc_us-gaap_DeferredIncomeTaxesAndTaxCredits_01a06d9c-3601-7318-88b6-a6eebc4bf1ea" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInAccountsReceivable_01a06d9c-3601-74d4-a0c8-7a3a52bee4f9" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncreaseDecreaseInAccountsReceivable"/>
    <link:calculationArc order="11" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_01a06d9c-3601-7199-8afb-3f98d071f1fd" xlink:to="loc_us-gaap_IncreaseDecreaseInAccountsReceivable_01a06d9c-3601-74d4-a0c8-7a3a52bee4f9" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInContractWithCustomerAsset_01a06d9c-3601-71ee-bedf-a1583a1ecfa4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncreaseDecreaseInContractWithCustomerAsset"/>
    <link:calculationArc order="12" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_01a06d9c-3601-7199-8afb-3f98d071f1fd" xlink:to="loc_us-gaap_IncreaseDecreaseInContractWithCustomerAsset_01a06d9c-3601-71ee-bedf-a1583a1ecfa4" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInInventories_01a06d9c-3601-7286-a90c-1e17dad43915" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncreaseDecreaseInInventories"/>
    <link:calculationArc order="13" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_01a06d9c-3601-7199-8afb-3f98d071f1fd" xlink:to="loc_us-gaap_IncreaseDecreaseInInventories_01a06d9c-3601-7286-a90c-1e17dad43915" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets_01a06d9c-3601-78eb-a169-cf453674b11a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets"/>
    <link:calculationArc order="14" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_01a06d9c-3601-7199-8afb-3f98d071f1fd" xlink:to="loc_us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets_01a06d9c-3601-78eb-a169-cf453674b11a" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInOtherNoncurrentAssets_01a06d9c-3601-70ac-812b-9c189ce8b557" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncreaseDecreaseInOtherNoncurrentAssets"/>
    <link:calculationArc order="15" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_01a06d9c-3601-7199-8afb-3f98d071f1fd" xlink:to="loc_us-gaap_IncreaseDecreaseInOtherNoncurrentAssets_01a06d9c-3601-70ac-812b-9c189ce8b557" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInAccountsPayableTrade_01a06d9c-3601-70da-b9e5-7e3bfda0397e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncreaseDecreaseInAccountsPayableTrade"/>
    <link:calculationArc order="16" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_01a06d9c-3601-7199-8afb-3f98d071f1fd" xlink:to="loc_us-gaap_IncreaseDecreaseInAccountsPayableTrade_01a06d9c-3601-70da-b9e5-7e3bfda0397e" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInAccruedLiabilities_01a06d9c-3601-7f58-9b13-a2008a68ce47" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncreaseDecreaseInAccruedLiabilities"/>
    <link:calculationArc order="17" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_01a06d9c-3601-7199-8afb-3f98d071f1fd" xlink:to="loc_us-gaap_IncreaseDecreaseInAccruedLiabilities_01a06d9c-3601-7f58-9b13-a2008a68ce47" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInEmployeeRelatedLiabilities_01a06d9c-3601-773b-87fa-d8500f622c95" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncreaseDecreaseInEmployeeRelatedLiabilities"/>
    <link:calculationArc order="18" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_01a06d9c-3601-7199-8afb-3f98d071f1fd" xlink:to="loc_us-gaap_IncreaseDecreaseInEmployeeRelatedLiabilities_01a06d9c-3601-773b-87fa-d8500f622c95" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInContractWithCustomerLiability_01a06d9c-3601-7576-9997-1001357cb730" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncreaseDecreaseInContractWithCustomerLiability"/>
    <link:calculationArc order="19" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_01a06d9c-3601-7199-8afb-3f98d071f1fd" xlink:to="loc_us-gaap_IncreaseDecreaseInContractWithCustomerLiability_01a06d9c-3601-7576-9997-1001357cb730" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInOtherCurrentLiabilities_01a06d9c-3601-7123-bed2-60d654704da5" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncreaseDecreaseInOtherCurrentLiabilities"/>
    <link:calculationArc order="20" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_01a06d9c-3601-7199-8afb-3f98d071f1fd" xlink:to="loc_us-gaap_IncreaseDecreaseInOtherCurrentLiabilities_01a06d9c-3601-7123-bed2-60d654704da5" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_rklb_IncreaseDecreaseInNonCurrentLeaseLiabilities_01a06d9c-3601-70f1-90fe-c4320946d4e4" xlink:href="rklb-20260930.xsd#rklb_IncreaseDecreaseInNonCurrentLeaseLiabilities"/>
    <link:calculationArc order="21" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_01a06d9c-3601-7199-8afb-3f98d071f1fd" xlink:to="loc_rklb_IncreaseDecreaseInNonCurrentLeaseLiabilities_01a06d9c-3601-70f1-90fe-c4320946d4e4" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInOtherNoncurrentLiabilities_01a06d9c-3601-7b81-a813-afd5adf0bfd0" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncreaseDecreaseInOtherNoncurrentLiabilities"/>
    <link:calculationArc order="22" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_01a06d9c-3601-7199-8afb-3f98d071f1fd" xlink:to="loc_us-gaap_IncreaseDecreaseInOtherNoncurrentLiabilities_01a06d9c-3601-7b81-a813-afd5adf0bfd0" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquitySecuritiesFvNiGainLoss_01a16898-dd23-7a01-9b32-e2dac54a8e1c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EquitySecuritiesFvNiGainLoss"/>
    <link:calculationArc order="23" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_01a06d9c-3601-7199-8afb-3f98d071f1fd" xlink:to="loc_us-gaap_EquitySecuritiesFvNiGainLoss_01a16898-dd23-7a01-9b32-e2dac54a8e1c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GainsLossesOnExtinguishmentOfDebt_01a16899-2d44-73b5-96f4-f18f0ccffdea" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_GainsLossesOnExtinguishmentOfDebt"/>
    <link:calculationArc order="24" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_01a06d9c-3601-7199-8afb-3f98d071f1fd" xlink:to="loc_us-gaap_GainsLossesOnExtinguishmentOfDebt_01a16899-2d44-73b5-96f4-f18f0ccffdea" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_rklb_AmortizationOfInventoryStepUp_01a16899-7157-7f2b-9f04-05bda9c0aab6" xlink:href="rklb-20260930.xsd#rklb_AmortizationOfInventoryStepUp"/>
    <link:calculationArc order="25" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_01a06d9c-3601-7199-8afb-3f98d071f1fd" xlink:to="loc_rklb_AmortizationOfInventoryStepUp_01a16899-7157-7f2b-9f04-05bda9c0aab6" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.rocketlabusa.com/role/BUSINESSCOMBINATIONSScheduleofEstimatesFairValueofAssetsAcquiredandLiabilitiesAssumedDetails" xlink:type="simple" xlink:href="rklb-20260930.xsd#BUSINESSCOMBINATIONSScheduleofEstimatesFairValueofAssetsAcquiredandLiabilitiesAssumedDetails"/>
  <link:calculationLink xlink:role="http://www.rocketlabusa.com/role/BUSINESSCOMBINATIONSScheduleofEstimatesFairValueofAssetsAcquiredandLiabilitiesAssumedDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet_01a06d9c-36b8-7591-91f1-80b7d3a277fd" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet_01a06d9c-36b8-7d54-afdd-2ae29faed832" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet_01a06d9c-36b8-7591-91f1-80b7d3a277fd" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet_01a06d9c-36b8-7d54-afdd-2ae29faed832" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Goodwill_01a06d9c-36b8-73c4-ac05-bc69a1c7f279" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_Goodwill"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet_01a06d9c-36b8-7591-91f1-80b7d3a277fd" xlink:to="loc_us-gaap_Goodwill_01a06d9c-36b8-73c4-ac05-bc69a1c7f279" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet_01a06d9c-36b8-7933-8d08-245edefd1acc" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCashAndEquivalents_01a06d9c-36b8-714a-863c-8c607a40989e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCashAndEquivalents"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet_01a06d9c-36b8-7933-8d08-245edefd1acc" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCashAndEquivalents_01a06d9c-36b8-714a-863c-8c607a40989e" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsReceivables_01a06d9c-36b8-7b69-b2cc-151138af7ac3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsReceivables"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet_01a06d9c-36b8-7933-8d08-245edefd1acc" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsReceivables_01a06d9c-36b8-7b69-b2cc-151138af7ac3" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_rklb_BusinessCombinationRecognizedAssetAcquiredContractAsset_01a06d9c-36b8-7668-af22-a4d82c4b2edd" xlink:href="rklb-20260930.xsd#rklb_BusinessCombinationRecognizedAssetAcquiredContractAsset"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet_01a06d9c-36b8-7933-8d08-245edefd1acc" xlink:to="loc_rklb_BusinessCombinationRecognizedAssetAcquiredContractAsset_01a06d9c-36b8-7668-af22-a4d82c4b2edd" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedInventory_01a06d9c-36b8-7e0f-9010-5b5c3a38bc74" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedInventory"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet_01a06d9c-36b8-7933-8d08-245edefd1acc" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedInventory_01a06d9c-36b8-7e0f-9010-5b5c3a38bc74" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsPrepaidExpenseAndOtherAssets_01a06d9c-36b8-765f-a10a-49ca26c0fb8a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsPrepaidExpenseAndOtherAssets"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet_01a06d9c-36b8-7933-8d08-245edefd1acc" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsPrepaidExpenseAndOtherAssets_01a06d9c-36b8-765f-a10a-49ca26c0fb8a" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment_01a06d9c-36b8-79a6-9138-8238004bee3a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet_01a06d9c-36b8-7933-8d08-245edefd1acc" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment_01a06d9c-36b8-79a6-9138-8238004bee3a" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles_01a06d9c-36b8-7aca-bbde-d103f3c9a7c4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles"/>
    <link:calculationArc order="7" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet_01a06d9c-36b8-7933-8d08-245edefd1acc" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles_01a06d9c-36b8-7aca-bbde-d103f3c9a7c4" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_rklb_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedRightOfUseAssetsOperatingLeases_01a06d9c-36b8-77aa-b66d-f5b0b588b575" xlink:href="rklb-20260930.xsd#rklb_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedRightOfUseAssetsOperatingLeases"/>
    <link:calculationArc order="8" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet_01a06d9c-36b8-7933-8d08-245edefd1acc" xlink:to="loc_rklb_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedRightOfUseAssetsOperatingLeases_01a06d9c-36b8-77aa-b66d-f5b0b588b575" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherNoncurrentAssets_01a06d9c-36b8-7909-b982-f9e979d34fdb" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherNoncurrentAssets"/>
    <link:calculationArc order="9" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet_01a06d9c-36b8-7933-8d08-245edefd1acc" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherNoncurrentAssets_01a06d9c-36b8-7909-b982-f9e979d34fdb" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesAccountsPayable_01a06d9c-36b8-7f1d-9ace-638a65973883" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesAccountsPayable"/>
    <link:calculationArc order="10" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet_01a06d9c-36b8-7933-8d08-245edefd1acc" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesAccountsPayable_01a06d9c-36b8-7f1d-9ace-638a65973883" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_rklb_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAccruedExpenses_01a06d9c-36b8-72c2-9c04-e89beaaaa70c" xlink:href="rklb-20260930.xsd#rklb_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAccruedExpenses"/>
    <link:calculationArc order="11" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet_01a06d9c-36b8-7933-8d08-245edefd1acc" xlink:to="loc_rklb_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAccruedExpenses_01a06d9c-36b8-72c2-9c04-e89beaaaa70c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_rklb_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedEmployeeBenefitsPayable_01a06d9c-36b8-7410-86dd-870ec3583676" xlink:href="rklb-20260930.xsd#rklb_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedEmployeeBenefitsPayable"/>
    <link:calculationArc order="12" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet_01a06d9c-36b8-7933-8d08-245edefd1acc" xlink:to="loc_rklb_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedEmployeeBenefitsPayable_01a06d9c-36b8-7410-86dd-870ec3583676" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesDeferredRevenue_01a06d9c-36b8-7183-9afc-fdaf8e6fd0a0" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesDeferredRevenue"/>
    <link:calculationArc order="13" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet_01a06d9c-36b8-7933-8d08-245edefd1acc" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesDeferredRevenue_01a06d9c-36b8-7183-9afc-fdaf8e6fd0a0" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesOther_01a06d9c-36b8-7dfe-bf31-aeb237c63ec9" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesOther"/>
    <link:calculationArc order="14" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet_01a06d9c-36b8-7933-8d08-245edefd1acc" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesOther_01a06d9c-36b8-7dfe-bf31-aeb237c63ec9" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_rklb_BusinessCombinationRecognizedLiabilityAssumedNonCurrentOperatingLeaseLiabilities_01a06d9c-36b8-7759-917f-732d867fca0b" xlink:href="rklb-20260930.xsd#rklb_BusinessCombinationRecognizedLiabilityAssumedNonCurrentOperatingLeaseLiabilities"/>
    <link:calculationArc order="15" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet_01a06d9c-36b8-7933-8d08-245edefd1acc" xlink:to="loc_rklb_BusinessCombinationRecognizedLiabilityAssumedNonCurrentOperatingLeaseLiabilities_01a06d9c-36b8-7759-917f-732d867fca0b" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedDeferredTaxLiabilities_01a06d9c-36b8-75c0-b696-ac753915eee0" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedDeferredTaxLiabilities"/>
    <link:calculationArc order="16" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet_01a06d9c-36b8-7933-8d08-245edefd1acc" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedDeferredTaxLiabilities_01a06d9c-36b8-75c0-b696-ac753915eee0" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilitiesOther_01a06d9c-36b8-7c6a-a0a1-63f62e5668b9" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilitiesOther"/>
    <link:calculationArc order="17" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet_01a06d9c-36b8-7933-8d08-245edefd1acc" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilitiesOther_01a06d9c-36b8-7c6a-a0a1-63f62e5668b9" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationConsiderationTransferred1_01a06d9c-36b8-7a0f-8786-192d5529c77d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessCombinationConsiderationTransferred1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsToAcquireBusinessesGross_01a06d9c-36b8-7c42-aeb8-a532db1f6bb5" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PaymentsToAcquireBusinessesGross"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_BusinessCombinationConsiderationTransferred1_01a06d9c-36b8-7a0f-8786-192d5529c77d" xlink:to="loc_us-gaap_PaymentsToAcquireBusinessesGross_01a06d9c-36b8-7c42-aeb8-a532db1f6bb5" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuable_01a06d9c-36b8-7196-9723-4b54a86c29a2" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuable"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_BusinessCombinationConsiderationTransferred1_01a06d9c-36b8-7a0f-8786-192d5529c77d" xlink:to="loc_us-gaap_BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuable_01a06d9c-36b8-7196-9723-4b54a86c29a2" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationConsiderationTransferredLiabilitiesIncurred_01a06d9c-36b8-72eb-aa72-27eb5fb64ac6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessCombinationConsiderationTransferredLiabilitiesIncurred"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_BusinessCombinationConsiderationTransferred1_01a06d9c-36b8-7a0f-8786-192d5529c77d" xlink:to="loc_us-gaap_BusinessCombinationConsiderationTransferredLiabilitiesIncurred_01a06d9c-36b8-72eb-aa72-27eb5fb64ac6" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.rocketlabusa.com/role/CASHANDCASHEQUIVALENTSANDMARKETABLESECURITIESScheduleofCashandCashEquivalentsandMarketableSecuritiesDetails" xlink:type="simple" xlink:href="rklb-20260930.xsd#CASHANDCASHEQUIVALENTSANDMARKETABLESECURITIESScheduleofCashandCashEquivalentsandMarketableSecuritiesDetails"/>
  <link:calculationLink xlink:role="http://www.rocketlabusa.com/role/CASHANDCASHEQUIVALENTSANDMARKETABLESECURITIESScheduleofCashandCashEquivalentsandMarketableSecuritiesDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_rklb_CashAndCashEquivalentsAndMarketableSecurities_01a06d9c-36b8-74e2-b9d5-850818415e63" xlink:href="rklb-20260930.xsd#rklb_CashAndCashEquivalentsAndMarketableSecurities"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MarketableSecuritiesNoncurrent_01a06d9c-36b8-7d6d-8157-a317524bff98" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_MarketableSecuritiesNoncurrent"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_rklb_CashAndCashEquivalentsAndMarketableSecurities_01a06d9c-36b8-74e2-b9d5-850818415e63" xlink:to="loc_us-gaap_MarketableSecuritiesNoncurrent_01a06d9c-36b8-7d6d-8157-a317524bff98" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MarketableSecuritiesCurrent_01a06d9c-36b8-7bc4-9cc0-edde5f819bca" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_MarketableSecuritiesCurrent"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_rklb_CashAndCashEquivalentsAndMarketableSecurities_01a06d9c-36b8-74e2-b9d5-850818415e63" xlink:to="loc_us-gaap_MarketableSecuritiesCurrent_01a06d9c-36b8-7bc4-9cc0-edde5f819bca" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_01a06d9c-36b8-7a80-ae71-3a391d98551f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CashAndCashEquivalentsAtCarryingValue"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_rklb_CashAndCashEquivalentsAndMarketableSecurities_01a06d9c-36b8-74e2-b9d5-850818415e63" xlink:to="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_01a06d9c-36b8-7a80-ae71-3a391d98551f" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.rocketlabusa.com/role/CASHANDCASHEQUIVALENTSANDMARKETABLESECURITIESScheduleofContractualMaturitiesofMarketableSecuritiesDetails" xlink:type="simple" xlink:href="rklb-20260930.xsd#CASHANDCASHEQUIVALENTSANDMARKETABLESECURITIESScheduleofContractualMaturitiesofMarketableSecuritiesDetails"/>
  <link:calculationLink xlink:role="http://www.rocketlabusa.com/role/CASHANDCASHEQUIVALENTSANDMARKETABLESECURITIESScheduleofContractualMaturitiesofMarketableSecuritiesDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis_01a06d9c-36b8-77f1-8b84-20242cba13ec" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis"/>
    <link:loc xlink:type="locator" xlink:label="loc_rklb_DebtSecuritiesAvailableForSaleAmortizedCostMaturityAllocatedAndSingleMaturityDateAfterYearOneThroughTwo_01a06d9c-36b8-7423-ad33-1cf52c59e426" xlink:href="rklb-20260930.xsd#rklb_DebtSecuritiesAvailableForSaleAmortizedCostMaturityAllocatedAndSingleMaturityDateAfterYearOneThroughTwo"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis_01a06d9c-36b8-77f1-8b84-20242cba13ec" xlink:to="loc_rklb_DebtSecuritiesAvailableForSaleAmortizedCostMaturityAllocatedAndSingleMaturityDateAfterYearOneThroughTwo_01a06d9c-36b8-7423-ad33-1cf52c59e426" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost_01a06d9c-36b8-7b9f-a24e-467fe01f6c83" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis_01a06d9c-36b8-77f1-8b84-20242cba13ec" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost_01a06d9c-36b8-7b9f-a24e-467fe01f6c83" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesDebtSecurities_01a06d9c-36b8-7619-900a-d9a865b91694" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AvailableForSaleSecuritiesDebtSecurities"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue_01a06d9c-36b8-7931-9613-7c9c8f4af2b7" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AvailableForSaleSecuritiesDebtSecurities_01a06d9c-36b8-7619-900a-d9a865b91694" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue_01a06d9c-36b8-7931-9613-7c9c8f4af2b7" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_rklb_DebtSecuritiesAvailableForSaleFairValueMaturityAllocatedAndSingleMaturityDateYearOneThroughTwo_01a06d9c-36b8-73e3-ad42-4d82cf1b460a" xlink:href="rklb-20260930.xsd#rklb_DebtSecuritiesAvailableForSaleFairValueMaturityAllocatedAndSingleMaturityDateYearOneThroughTwo"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AvailableForSaleSecuritiesDebtSecurities_01a06d9c-36b8-7619-900a-d9a865b91694" xlink:to="loc_rklb_DebtSecuritiesAvailableForSaleFairValueMaturityAllocatedAndSingleMaturityDateYearOneThroughTwo_01a06d9c-36b8-73e3-ad42-4d82cf1b460a" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.rocketlabusa.com/role/FAIRVALUEOFFINANCIALINSTRUMENTSScheduleofFinancialAssetsandLiabilitiesMeasuredatFairValueonaRecurringBasisDetails" xlink:type="simple" xlink:href="rklb-20260930.xsd#FAIRVALUEOFFINANCIALINSTRUMENTSScheduleofFinancialAssetsandLiabilitiesMeasuredatFairValueonaRecurringBasisDetails"/>
  <link:calculationLink xlink:role="http://www.rocketlabusa.com/role/FAIRVALUEOFFINANCIALINSTRUMENTSScheduleofFinancialAssetsandLiabilitiesMeasuredatFairValueonaRecurringBasisDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesFairValueDisclosure_01a06d9c-36b8-742e-92e2-5c8144b7b6de" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LiabilitiesFairValueDisclosure"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationContingentConsiderationLiabilityNoncurrent_01a06d9c-36b8-7aec-b720-23b5e52ddf59" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessCombinationContingentConsiderationLiabilityNoncurrent"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesFairValueDisclosure_01a06d9c-36b8-742e-92e2-5c8144b7b6de" xlink:to="loc_us-gaap_BusinessCombinationContingentConsiderationLiabilityNoncurrent_01a06d9c-36b8-7aec-b720-23b5e52ddf59" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsFairValueDisclosure_01a06d9c-36b8-74b3-ab66-9c7336af9869" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AssetsFairValueDisclosure"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MarketableSecuritiesNoncurrent_01a06d9c-36b8-7fb3-978b-4dca063c7029" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_MarketableSecuritiesNoncurrent"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsFairValueDisclosure_01a06d9c-36b8-74b3-ab66-9c7336af9869" xlink:to="loc_us-gaap_MarketableSecuritiesNoncurrent_01a06d9c-36b8-7fb3-978b-4dca063c7029" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MarketableSecuritiesCurrent_01a06d9c-36b8-721e-b186-feb5467299d2" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_MarketableSecuritiesCurrent"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsFairValueDisclosure_01a06d9c-36b8-74b3-ab66-9c7336af9869" xlink:to="loc_us-gaap_MarketableSecuritiesCurrent_01a06d9c-36b8-721e-b186-feb5467299d2" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashAndCashEquivalentsFairValueDisclosure_01a06d9c-36b8-7b16-bc89-3fc945959bb7" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CashAndCashEquivalentsFairValueDisclosure"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsFairValueDisclosure_01a06d9c-36b8-74b3-ab66-9c7336af9869" xlink:to="loc_us-gaap_CashAndCashEquivalentsFairValueDisclosure_01a06d9c-36b8-7b16-bc89-3fc945959bb7" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.rocketlabusa.com/role/INVENTORIESDetails" xlink:type="simple" xlink:href="rklb-20260930.xsd#INVENTORIESDetails"/>
  <link:calculationLink xlink:role="http://www.rocketlabusa.com/role/INVENTORIESDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InventoryNet_01a06d9c-36b8-74dc-ae7c-8ca96fcbd715" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InventoryNet"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InventoryFinishedGoods_01a06d9c-36b8-7d28-8b01-da9100624729" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InventoryFinishedGoods"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_InventoryNet_01a06d9c-36b8-74dc-ae7c-8ca96fcbd715" xlink:to="loc_us-gaap_InventoryFinishedGoods_01a06d9c-36b8-7d28-8b01-da9100624729" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InventoryWorkInProcess_01a06d9c-36b8-777a-9d0c-af2228144a28" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InventoryWorkInProcess"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_InventoryNet_01a06d9c-36b8-74dc-ae7c-8ca96fcbd715" xlink:to="loc_us-gaap_InventoryWorkInProcess_01a06d9c-36b8-777a-9d0c-af2228144a28" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InventoryRawMaterials_01a06d9c-36b8-7329-bd62-5fd848a1aba4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InventoryRawMaterials"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_InventoryNet_01a06d9c-36b8-74dc-ae7c-8ca96fcbd715" xlink:to="loc_us-gaap_InventoryRawMaterials_01a06d9c-36b8-7329-bd62-5fd848a1aba4" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.rocketlabusa.com/role/PREPAIDSANDOTHERCURRENTASSETSDetails" xlink:type="simple" xlink:href="rklb-20260930.xsd#PREPAIDSANDOTHERCURRENTASSETSDetails"/>
  <link:calculationLink xlink:role="http://www.rocketlabusa.com/role/PREPAIDSANDOTHERCURRENTASSETSDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PrepaidExpenseAndOtherAssetsCurrent_01a06d9c-36b8-7d96-a296-f3085dbb8987" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PrepaidExpenseAndOtherAssetsCurrent"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PrepaidExpenseCurrent_01a06d9c-36b8-784c-8946-da2f2f2b16c7" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PrepaidExpenseCurrent"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_PrepaidExpenseAndOtherAssetsCurrent_01a06d9c-36b8-7d96-a296-f3085dbb8987" xlink:to="loc_us-gaap_PrepaidExpenseCurrent_01a06d9c-36b8-784c-8946-da2f2f2b16c7" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GrantsReceivableCurrent_01a06d9c-36b8-72ad-80d0-f111a61161e5" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_GrantsReceivableCurrent"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_PrepaidExpenseAndOtherAssetsCurrent_01a06d9c-36b8-7d96-a296-f3085dbb8987" xlink:to="loc_us-gaap_GrantsReceivableCurrent_01a06d9c-36b8-72ad-80d0-f111a61161e5" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReceivablesNetCurrent_01a06d9c-36b8-797e-b499-9c6454f0570d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ReceivablesNetCurrent"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_PrepaidExpenseAndOtherAssetsCurrent_01a06d9c-36b8-7d96-a296-f3085dbb8987" xlink:to="loc_us-gaap_ReceivablesNetCurrent_01a06d9c-36b8-797e-b499-9c6454f0570d" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherAssetsCurrent_01a06d9c-36b8-7b8a-8370-530fea736d1f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherAssetsCurrent"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_PrepaidExpenseAndOtherAssetsCurrent_01a06d9c-36b8-7d96-a296-f3085dbb8987" xlink:to="loc_us-gaap_OtherAssetsCurrent_01a06d9c-36b8-7b8a-8370-530fea736d1f" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.rocketlabusa.com/role/PROPERTYPLANTANDEQUIPMENTNETScheduleofPropertyPlantandEquipmentNetDetail" xlink:type="simple" xlink:href="rklb-20260930.xsd#PROPERTYPLANTANDEQUIPMENTNETScheduleofPropertyPlantandEquipmentNetDetail"/>
  <link:calculationLink xlink:role="http://www.rocketlabusa.com/role/PROPERTYPLANTANDEQUIPMENTNETScheduleofPropertyPlantandEquipmentNetDetail" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentNet_01a06d9c-36b8-7f81-8a17-b3ac8d768d47" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PropertyPlantAndEquipmentNet"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentGross_01a06d9c-36b8-771e-984a-07fd6bce85b0" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PropertyPlantAndEquipmentGross"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentNet_01a06d9c-36b8-7f81-8a17-b3ac8d768d47" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentGross_01a06d9c-36b8-771e-984a-07fd6bce85b0" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_01a06d9c-36b8-7f47-8e58-b4c8f19cdfa3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentNet_01a06d9c-36b8-7f81-8a17-b3ac8d768d47" xlink:to="loc_us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_01a06d9c-36b8-7f47-8e58-b4c8f19cdfa3" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.rocketlabusa.com/role/GOODWILLANDINTANGIBLEASSETSNETScheduleofComponentsofIntangibleAssetsDetails" xlink:type="simple" xlink:href="rklb-20260930.xsd#GOODWILLANDINTANGIBLEASSETSNETScheduleofComponentsofIntangibleAssetsDetails"/>
  <link:calculationLink xlink:role="http://www.rocketlabusa.com/role/GOODWILLANDINTANGIBLEASSETSNETScheduleofComponentsofIntangibleAssetsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IntangibleAssetsNetExcludingGoodwill_01a06d9c-36b8-76fe-b710-3884b26684de" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IntangibleAssetsNetExcludingGoodwill"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill_01a06d9c-36b8-75ee-9ed9-b8905d4f1e68" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_IntangibleAssetsNetExcludingGoodwill_01a06d9c-36b8-76fe-b710-3884b26684de" xlink:to="loc_us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill_01a06d9c-36b8-75ee-9ed9-b8905d4f1e68" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsNet_01a06d9c-36b8-7fa2-bbf8-0bc27df069f2" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FiniteLivedIntangibleAssetsNet"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_IntangibleAssetsNetExcludingGoodwill_01a06d9c-36b8-76fe-b710-3884b26684de" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsNet_01a06d9c-36b8-7fa2-bbf8-0bc27df069f2" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IntangibleAssetsGrossExcludingGoodwill_01a06d9c-36b8-7bf6-9b90-1a91211420fe" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IntangibleAssetsGrossExcludingGoodwill"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsGross_01a06d9c-36b8-7837-b0fc-0534b7b1e4cf" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FiniteLivedIntangibleAssetsGross"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_IntangibleAssetsGrossExcludingGoodwill_01a06d9c-36b8-7bf6-9b90-1a91211420fe" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsGross_01a06d9c-36b8-7837-b0fc-0534b7b1e4cf" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill_01a06d9c-36b8-7197-9cf8-ced703d4b6e1" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_IntangibleAssetsGrossExcludingGoodwill_01a06d9c-36b8-7bf6-9b90-1a91211420fe" xlink:to="loc_us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill_01a06d9c-36b8-7197-9cf8-ced703d4b6e1" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsNet_01a06d9c-36b8-7473-8355-208b25e66bea" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FiniteLivedIntangibleAssetsNet"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsGross_01a06d9c-36b8-73f1-abe1-d699f5d4f27c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FiniteLivedIntangibleAssetsGross"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsNet_01a06d9c-36b8-7473-8355-208b25e66bea" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsGross_01a06d9c-36b8-73f1-abe1-d699f5d4f27c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_01a06d9c-36b8-7436-a49a-373925fe49a8" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsNet_01a06d9c-36b8-7473-8355-208b25e66bea" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_01a06d9c-36b8-7436-a49a-373925fe49a8" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.rocketlabusa.com/role/GOODWILLANDINTANGIBLEASSETSNETScheduleofComponentsofIntangibleAssetsDetails_1" xlink:type="simple" xlink:href="rklb-20260930.xsd#GOODWILLANDINTANGIBLEASSETSNETScheduleofComponentsofIntangibleAssetsDetails_1"/>
  <link:calculationLink xlink:role="http://www.rocketlabusa.com/role/GOODWILLANDINTANGIBLEASSETSNETScheduleofComponentsofIntangibleAssetsDetails_1" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IntangibleAssetsNetExcludingGoodwill_01a06d9c-36b8-714d-b06b-0a47aaa1ae2a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IntangibleAssetsNetExcludingGoodwill"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IntangibleAssetsGrossExcludingGoodwill_01a06d9c-36b8-7662-bec8-98559f9e21d1" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IntangibleAssetsGrossExcludingGoodwill"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_IntangibleAssetsNetExcludingGoodwill_01a06d9c-36b8-714d-b06b-0a47aaa1ae2a" xlink:to="loc_us-gaap_IntangibleAssetsGrossExcludingGoodwill_01a06d9c-36b8-7662-bec8-98559f9e21d1" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_01a06d9c-36b8-7e99-a161-30d362ef2fed" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_IntangibleAssetsNetExcludingGoodwill_01a06d9c-36b8-714d-b06b-0a47aaa1ae2a" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_01a06d9c-36b8-7e99-a161-30d362ef2fed" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.rocketlabusa.com/role/GOODWILLANDINTANGIBLEASSETSNETScheduleofEstimatedFutureAmortizationExpenseRelatedtoFiniteIntangibleAssetsDetails" xlink:type="simple" xlink:href="rklb-20260930.xsd#GOODWILLANDINTANGIBLEASSETSNETScheduleofEstimatedFutureAmortizationExpenseRelatedtoFiniteIntangibleAssetsDetails"/>
  <link:calculationLink xlink:role="http://www.rocketlabusa.com/role/GOODWILLANDINTANGIBLEASSETSNETScheduleofEstimatedFutureAmortizationExpenseRelatedtoFiniteIntangibleAssetsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsNet_01a06d9c-36b8-72fe-bf7e-7bc1de321836" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FiniteLivedIntangibleAssetsNet"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear_01a06d9c-36b8-7d6d-8425-5ce8a68840e6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsNet_01a06d9c-36b8-72fe-bf7e-7bc1de321836" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear_01a06d9c-36b8-7d6d-8425-5ce8a68840e6" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths_01a06d9c-36b8-7128-9a84-687ac9169000" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsNet_01a06d9c-36b8-72fe-bf7e-7bc1de321836" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths_01a06d9c-36b8-7128-9a84-687ac9169000" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo_01a06d9c-36b8-7635-aeda-dc7998447238" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsNet_01a06d9c-36b8-72fe-bf7e-7bc1de321836" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo_01a06d9c-36b8-7635-aeda-dc7998447238" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree_01a06d9c-36b8-7901-ab4f-da87639491ac" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsNet_01a06d9c-36b8-72fe-bf7e-7bc1de321836" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree_01a06d9c-36b8-7901-ab4f-da87639491ac" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour_01a06d9c-36b8-78ae-9b20-495602171dcb" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsNet_01a06d9c-36b8-72fe-bf7e-7bc1de321836" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour_01a06d9c-36b8-78ae-9b20-495602171dcb" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_rklb_FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFour_01a06d9c-36b8-7457-aec0-9a9d4d12fa3c" xlink:href="rklb-20260930.xsd#rklb_FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFour"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsNet_01a06d9c-36b8-72fe-bf7e-7bc1de321836" xlink:to="loc_rklb_FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFour_01a06d9c-36b8-7457-aec0-9a9d4d12fa3c" xlink:type="arc"/>
  </link:calculationLink>
</link:linkbase>
