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

<!--XBRL Document Created with the Workiva Platform-->
<!--Copyright 2026 Workiva-->
<!--r:019e40b4-43e4-7d54-b82a-919d4e9ea7d3,g:f1c2f9ff-020d-4488-9f80-d12478eafea0-->
<link:linkbase xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xbrldt="http://xbrl.org/2005/xbrldt" xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd">
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/all" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#all"/>
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#hypercube-dimension"/>
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#dimension-default"/>
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#dimension-domain"/>
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/domain-member" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#domain-member"/>
  <link:roleRef roleURI="http://www.noblecorp.com/role/Cover" xlink:type="simple" xlink:href="ne-20260630.xsd#Cover"/>
  <link:definitionLink xlink:role="http://www.noblecorp.com/role/Cover" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentInformationLineItems_019e40b4-44aa-766a-9429-edcde23c7bd9" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_DocumentInformationLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentInformationTable_019e40b4-44aa-7518-b24f-480cda101d8f" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_DocumentInformationTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_dei_DocumentInformationLineItems_019e40b4-44aa-766a-9429-edcde23c7bd9" xlink:to="loc_dei_DocumentInformationTable_019e40b4-44aa-7518-b24f-480cda101d8f" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementClassOfStockAxis_019e40b4-44aa-7274-9487-60f58013adcc" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementClassOfStockAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_dei_DocumentInformationTable_019e40b4-44aa-7518-b24f-480cda101d8f" xlink:to="loc_us-gaap_StatementClassOfStockAxis_019e40b4-44aa-7274-9487-60f58013adcc" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfStockDomain_019e40b4-44aa-7274-9487-60f58013adcc_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ClassOfStockDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementClassOfStockAxis_019e40b4-44aa-7274-9487-60f58013adcc" xlink:to="loc_us-gaap_ClassOfStockDomain_019e40b4-44aa-7274-9487-60f58013adcc_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfStockDomain_019e40b4-44aa-745b-b49c-a0dc494d7c3e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ClassOfStockDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementClassOfStockAxis_019e40b4-44aa-7274-9487-60f58013adcc" xlink:to="loc_us-gaap_ClassOfStockDomain_019e40b4-44aa-745b-b49c-a0dc494d7c3e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockMember_019e40b4-44aa-7211-9c7e-4ab39c3d2294" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommonStockMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockDomain_019e40b4-44aa-745b-b49c-a0dc494d7c3e" xlink:to="loc_us-gaap_CommonStockMember_019e40b4-44aa-7211-9c7e-4ab39c3d2294" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ne_Tranche1WarrantsMember_019e40b4-44aa-7de5-b6c5-5689b307b752" xlink:href="ne-20260630.xsd#ne_Tranche1WarrantsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockDomain_019e40b4-44aa-745b-b49c-a0dc494d7c3e" xlink:to="loc_ne_Tranche1WarrantsMember_019e40b4-44aa-7de5-b6c5-5689b307b752" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ne_Tranche2WarrantsMember_019e40b4-44aa-77e9-907f-2ca03c2cbbee" xlink:href="ne-20260630.xsd#ne_Tranche2WarrantsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockDomain_019e40b4-44aa-745b-b49c-a0dc494d7c3e" xlink:to="loc_ne_Tranche2WarrantsMember_019e40b4-44aa-77e9-907f-2ca03c2cbbee" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentType_019e40b4-44aa-7bf4-9806-21ea4c5e06ab" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_DocumentType"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_019e40b4-44aa-766a-9429-edcde23c7bd9" xlink:to="loc_dei_DocumentType_019e40b4-44aa-7bf4-9806-21ea4c5e06ab" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentQuarterlyReport_019e40b4-44aa-7ce3-9bcf-41f976511a65" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_DocumentQuarterlyReport"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_019e40b4-44aa-766a-9429-edcde23c7bd9" xlink:to="loc_dei_DocumentQuarterlyReport_019e40b4-44aa-7ce3-9bcf-41f976511a65" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentPeriodEndDate_019e40b4-44aa-727c-911b-b8662972733c" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_DocumentPeriodEndDate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_019e40b4-44aa-766a-9429-edcde23c7bd9" xlink:to="loc_dei_DocumentPeriodEndDate_019e40b4-44aa-727c-911b-b8662972733c" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentTransitionReport_019e40b4-44aa-7878-96b3-d2afe6e656a7" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_DocumentTransitionReport"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_019e40b4-44aa-766a-9429-edcde23c7bd9" xlink:to="loc_dei_DocumentTransitionReport_019e40b4-44aa-7878-96b3-d2afe6e656a7" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityFileNumber_019e40b4-44aa-7684-bd93-cf8914b5f0b5" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityFileNumber"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_019e40b4-44aa-766a-9429-edcde23c7bd9" xlink:to="loc_dei_EntityFileNumber_019e40b4-44aa-7684-bd93-cf8914b5f0b5" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityRegistrantName_019e40b4-44aa-7bc5-8585-9a67e31cfd11" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityRegistrantName"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_019e40b4-44aa-766a-9429-edcde23c7bd9" xlink:to="loc_dei_EntityRegistrantName_019e40b4-44aa-7bc5-8585-9a67e31cfd11" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityIncorporationStateCountryCode_019e40b4-44aa-7acd-ab08-08c4cfe171ce" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityIncorporationStateCountryCode"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_019e40b4-44aa-766a-9429-edcde23c7bd9" xlink:to="loc_dei_EntityIncorporationStateCountryCode_019e40b4-44aa-7acd-ab08-08c4cfe171ce" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityTaxIdentificationNumber_019e40b4-44aa-7b16-a42e-9b69867225b0" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityTaxIdentificationNumber"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_019e40b4-44aa-766a-9429-edcde23c7bd9" xlink:to="loc_dei_EntityTaxIdentificationNumber_019e40b4-44aa-7b16-a42e-9b69867225b0" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressAddressLine1_019e40b4-44aa-75aa-ad82-fe5a0eaac456" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityAddressAddressLine1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_019e40b4-44aa-766a-9429-edcde23c7bd9" xlink:to="loc_dei_EntityAddressAddressLine1_019e40b4-44aa-75aa-ad82-fe5a0eaac456" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressCityOrTown_019e40b4-44aa-7eb9-b9b7-28fcd3abf526" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityAddressCityOrTown"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_019e40b4-44aa-766a-9429-edcde23c7bd9" xlink:to="loc_dei_EntityAddressCityOrTown_019e40b4-44aa-7eb9-b9b7-28fcd3abf526" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressStateOrProvince_019e40b4-44aa-7da4-b2bd-9eea0c0ba7f8" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityAddressStateOrProvince"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_019e40b4-44aa-766a-9429-edcde23c7bd9" xlink:to="loc_dei_EntityAddressStateOrProvince_019e40b4-44aa-7da4-b2bd-9eea0c0ba7f8" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressPostalZipCode_019e40b4-44aa-7b39-b5ed-9deebe4d71ee" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityAddressPostalZipCode"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_019e40b4-44aa-766a-9429-edcde23c7bd9" xlink:to="loc_dei_EntityAddressPostalZipCode_019e40b4-44aa-7b39-b5ed-9deebe4d71ee" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_CityAreaCode_019e40b4-44aa-72bc-81ea-e901682cd973" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_CityAreaCode"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_019e40b4-44aa-766a-9429-edcde23c7bd9" xlink:to="loc_dei_CityAreaCode_019e40b4-44aa-72bc-81ea-e901682cd973" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LocalPhoneNumber_019e40b4-44aa-7ce7-a078-25fd7f34a0a2" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_LocalPhoneNumber"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_019e40b4-44aa-766a-9429-edcde23c7bd9" xlink:to="loc_dei_LocalPhoneNumber_019e40b4-44aa-7ce7-a078-25fd7f34a0a2" xlink:type="arc" order="13"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_Security12bTitle_019e40b4-44aa-7b85-b351-991e18702d74" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_Security12bTitle"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_019e40b4-44aa-766a-9429-edcde23c7bd9" xlink:to="loc_dei_Security12bTitle_019e40b4-44aa-7b85-b351-991e18702d74" xlink:type="arc" order="14"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_TradingSymbol_019e40b4-44aa-752b-9808-5156137eadce" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_TradingSymbol"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_019e40b4-44aa-766a-9429-edcde23c7bd9" xlink:to="loc_dei_TradingSymbol_019e40b4-44aa-752b-9808-5156137eadce" xlink:type="arc" order="15"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_SecurityExchangeName_019e40b4-44aa-75d5-a4dd-73791bb38f5c" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_SecurityExchangeName"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_019e40b4-44aa-766a-9429-edcde23c7bd9" xlink:to="loc_dei_SecurityExchangeName_019e40b4-44aa-75d5-a4dd-73791bb38f5c" xlink:type="arc" order="16"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityCurrentReportingStatus_019e40b4-44aa-71ee-a176-d540b612539c" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityCurrentReportingStatus"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_019e40b4-44aa-766a-9429-edcde23c7bd9" xlink:to="loc_dei_EntityCurrentReportingStatus_019e40b4-44aa-71ee-a176-d540b612539c" xlink:type="arc" order="17"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityInteractiveDataCurrent_019e40b4-44aa-7a37-bee1-39a6e4d23e01" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityInteractiveDataCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_019e40b4-44aa-766a-9429-edcde23c7bd9" xlink:to="loc_dei_EntityInteractiveDataCurrent_019e40b4-44aa-7a37-bee1-39a6e4d23e01" xlink:type="arc" order="18"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityFilerCategory_019e40b4-44aa-79ea-a6b1-4eae4fb84af3" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityFilerCategory"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_019e40b4-44aa-766a-9429-edcde23c7bd9" xlink:to="loc_dei_EntityFilerCategory_019e40b4-44aa-79ea-a6b1-4eae4fb84af3" xlink:type="arc" order="19"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntitySmallBusiness_019e40b4-44aa-7925-9a4b-06395146acfb" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntitySmallBusiness"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_019e40b4-44aa-766a-9429-edcde23c7bd9" xlink:to="loc_dei_EntitySmallBusiness_019e40b4-44aa-7925-9a4b-06395146acfb" xlink:type="arc" order="20"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityEmergingGrowthCompany_019e40b4-44aa-7d82-9b3a-bb65c3483a6e" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityEmergingGrowthCompany"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_019e40b4-44aa-766a-9429-edcde23c7bd9" xlink:to="loc_dei_EntityEmergingGrowthCompany_019e40b4-44aa-7d82-9b3a-bb65c3483a6e" xlink:type="arc" order="21"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityShellCompany_019e40b4-44aa-799e-a999-732eebeb2576" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityShellCompany"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_019e40b4-44aa-766a-9429-edcde23c7bd9" xlink:to="loc_dei_EntityShellCompany_019e40b4-44aa-799e-a999-732eebeb2576" xlink:type="arc" order="22"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityBankruptcyProceedingsReportingCurrent_019e40b4-44aa-711f-b09d-d5e593a47e91" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityBankruptcyProceedingsReportingCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_019e40b4-44aa-766a-9429-edcde23c7bd9" xlink:to="loc_dei_EntityBankruptcyProceedingsReportingCurrent_019e40b4-44aa-711f-b09d-d5e593a47e91" xlink:type="arc" order="23"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityCommonStockSharesOutstanding_019e40b4-44aa-7a0c-b51a-50a69d6860db" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityCommonStockSharesOutstanding"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_019e40b4-44aa-766a-9429-edcde23c7bd9" xlink:to="loc_dei_EntityCommonStockSharesOutstanding_019e40b4-44aa-7a0c-b51a-50a69d6860db" xlink:type="arc" order="24"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityCentralIndexKey_019e40b4-44aa-7eee-bc68-64d2bf1209b4" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityCentralIndexKey"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_019e40b4-44aa-766a-9429-edcde23c7bd9" xlink:to="loc_dei_EntityCentralIndexKey_019e40b4-44aa-7eee-bc68-64d2bf1209b4" xlink:type="arc" order="25"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_CurrentFiscalYearEndDate_019e40b4-44aa-71c9-8b98-a509733793a8" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_CurrentFiscalYearEndDate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_019e40b4-44aa-766a-9429-edcde23c7bd9" xlink:to="loc_dei_CurrentFiscalYearEndDate_019e40b4-44aa-71c9-8b98-a509733793a8" xlink:type="arc" order="26"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentFiscalYearFocus_019e40b4-44aa-7a4d-b130-8f0a168f680e" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_DocumentFiscalYearFocus"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_019e40b4-44aa-766a-9429-edcde23c7bd9" xlink:to="loc_dei_DocumentFiscalYearFocus_019e40b4-44aa-7a4d-b130-8f0a168f680e" xlink:type="arc" order="27"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentFiscalPeriodFocus_019e40b4-44aa-76c6-bb36-b93032447de7" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_DocumentFiscalPeriodFocus"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_019e40b4-44aa-766a-9429-edcde23c7bd9" xlink:to="loc_dei_DocumentFiscalPeriodFocus_019e40b4-44aa-76c6-bb36-b93032447de7" xlink:type="arc" order="28"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_AmendmentFlag_019e40b4-44aa-7504-a5ac-1c4239101755" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_AmendmentFlag"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_019e40b4-44aa-766a-9429-edcde23c7bd9" xlink:to="loc_dei_AmendmentFlag_019e40b4-44aa-7504-a5ac-1c4239101755" xlink:type="arc" order="29"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.noblecorp.com/role/CONDENSEDCONSOLIDATEDSTATEMENTSOFOPERATIONS" xlink:type="simple" xlink:href="ne-20260630.xsd#CONDENSEDCONSOLIDATEDSTATEMENTSOFOPERATIONS"/>
  <link:definitionLink xlink:role="http://www.noblecorp.com/role/CONDENSEDCONSOLIDATEDSTATEMENTSOFOPERATIONS" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementLineItems_019e40b4-44aa-7f6f-a1ee-7d690340de2e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementTable_019e40b4-44aa-7d79-8b6d-049043ff51bf" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_019e40b4-44aa-7f6f-a1ee-7d690340de2e" xlink:to="loc_us-gaap_StatementTable_019e40b4-44aa-7d79-8b6d-049043ff51bf" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductOrServiceAxis_019e40b4-44aa-77da-b4ed-222b80027049" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ProductOrServiceAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_019e40b4-44aa-7d79-8b6d-049043ff51bf" xlink:to="loc_srt_ProductOrServiceAxis_019e40b4-44aa-77da-b4ed-222b80027049" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_019e40b4-44aa-77da-b4ed-222b80027049_default" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ProductsAndServicesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ProductOrServiceAxis_019e40b4-44aa-77da-b4ed-222b80027049" xlink:to="loc_srt_ProductsAndServicesDomain_019e40b4-44aa-77da-b4ed-222b80027049_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_019e40b4-44aa-75e6-b2e4-7be45bdd760f" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ProductsAndServicesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ProductOrServiceAxis_019e40b4-44aa-77da-b4ed-222b80027049" xlink:to="loc_srt_ProductsAndServicesDomain_019e40b4-44aa-75e6-b2e4-7be45bdd760f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OilAndGasServiceMember_019e40b4-44aa-72dd-bbb6-8b377eae4e36" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OilAndGasServiceMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_019e40b4-44aa-75e6-b2e4-7be45bdd760f" xlink:to="loc_us-gaap_OilAndGasServiceMember_019e40b4-44aa-72dd-bbb6-8b377eae4e36" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ServiceOtherMember_019e40b4-44aa-7cbc-9fda-ea5c37ec5e04" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ServiceOtherMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_019e40b4-44aa-75e6-b2e4-7be45bdd760f" xlink:to="loc_us-gaap_ServiceOtherMember_019e40b4-44aa-7cbc-9fda-ea5c37ec5e04" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenuesAbstract_019e40b4-44aa-75b8-8269-b48f8899a753" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RevenuesAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_019e40b4-44aa-7f6f-a1ee-7d690340de2e" xlink:to="loc_us-gaap_RevenuesAbstract_019e40b4-44aa-75b8-8269-b48f8899a753" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_019e40b4-44aa-7f7a-b8ca-f2422b01be56" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RevenuesAbstract_019e40b4-44aa-75b8-8269-b48f8899a753" xlink:to="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_019e40b4-44aa-7f7a-b8ca-f2422b01be56" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingCostsAndExpensesAbstract_019e40b4-44aa-7275-9eff-05814730f2bc" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OperatingCostsAndExpensesAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_019e40b4-44aa-7f6f-a1ee-7d690340de2e" xlink:to="loc_us-gaap_OperatingCostsAndExpensesAbstract_019e40b4-44aa-7275-9eff-05814730f2bc" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CostOfGoodsAndServiceExcludingDepreciationDepletionAndAmortization_019e40b4-44aa-72c2-a596-9c6195bb2355" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CostOfGoodsAndServiceExcludingDepreciationDepletionAndAmortization"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingCostsAndExpensesAbstract_019e40b4-44aa-7275-9eff-05814730f2bc" xlink:to="loc_us-gaap_CostOfGoodsAndServiceExcludingDepreciationDepletionAndAmortization_019e40b4-44aa-72c2-a596-9c6195bb2355" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CostOfGoodsAndServicesSoldDepreciationAndAmortization_019e40b4-44aa-7533-992c-010b5a263320" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CostOfGoodsAndServicesSoldDepreciationAndAmortization"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingCostsAndExpensesAbstract_019e40b4-44aa-7275-9eff-05814730f2bc" xlink:to="loc_us-gaap_CostOfGoodsAndServicesSoldDepreciationAndAmortization_019e40b4-44aa-7533-992c-010b5a263320" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GeneralAndAdministrativeExpense_019e40b4-44aa-7377-af87-0769162f8987" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_GeneralAndAdministrativeExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingCostsAndExpensesAbstract_019e40b4-44aa-7275-9eff-05814730f2bc" xlink:to="loc_us-gaap_GeneralAndAdministrativeExpense_019e40b4-44aa-7377-af87-0769162f8987" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationAcquisitionRelatedCosts_019e40b4-44aa-7eb8-9ec2-6d29bb924c51" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessCombinationAcquisitionRelatedCosts"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingCostsAndExpensesAbstract_019e40b4-44aa-7275-9eff-05814730f2bc" xlink:to="loc_us-gaap_BusinessCombinationAcquisitionRelatedCosts_019e40b4-44aa-7eb8-9ec2-6d29bb924c51" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_ne_GainLossOnSaleOfOperatingAssetsNetOfTransactionCosts_019e40b4-44aa-700d-9a51-4b324c5be23d" xlink:href="ne-20260630.xsd#ne_GainLossOnSaleOfOperatingAssetsNetOfTransactionCosts"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingCostsAndExpensesAbstract_019e40b4-44aa-7275-9eff-05814730f2bc" xlink:to="loc_ne_GainLossOnSaleOfOperatingAssetsNetOfTransactionCosts_019e40b4-44aa-700d-9a51-4b324c5be23d" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetImpairmentCharges_019ed4f1-2219-7247-9771-a09d6b307f2f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AssetImpairmentCharges"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingCostsAndExpensesAbstract_019e40b4-44aa-7275-9eff-05814730f2bc" xlink:to="loc_us-gaap_AssetImpairmentCharges_019ed4f1-2219-7247-9771-a09d6b307f2f" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CostsAndExpenses_019e40b4-44aa-794a-b9ca-e7811b5a2ce1" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CostsAndExpenses"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingCostsAndExpensesAbstract_019e40b4-44aa-7275-9eff-05814730f2bc" xlink:to="loc_us-gaap_CostsAndExpenses_019e40b4-44aa-794a-b9ca-e7811b5a2ce1" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingIncomeLoss_019e40b4-44aa-71e6-af01-7fc0b9be8c95" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OperatingIncomeLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_019e40b4-44aa-7f6f-a1ee-7d690340de2e" xlink:to="loc_us-gaap_OperatingIncomeLoss_019e40b4-44aa-71e6-af01-7fc0b9be8c95" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NonoperatingIncomeExpenseAbstract_019e40b4-44aa-7a4d-b397-a3893d271489" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NonoperatingIncomeExpenseAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_019e40b4-44aa-7f6f-a1ee-7d690340de2e" xlink:to="loc_us-gaap_NonoperatingIncomeExpenseAbstract_019e40b4-44aa-7a4d-b397-a3893d271489" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestExpenseNonoperating_019e40b4-44aa-7137-9375-01e7c1ef6ee1" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InterestExpenseNonoperating"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NonoperatingIncomeExpenseAbstract_019e40b4-44aa-7a4d-b397-a3893d271489" xlink:to="loc_us-gaap_InterestExpenseNonoperating_019e40b4-44aa-7137-9375-01e7c1ef6ee1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GainsLossesOnExtinguishmentOfDebt_019e40b4-44aa-7b84-ad0d-d248dc2e6143" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_GainsLossesOnExtinguishmentOfDebt"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NonoperatingIncomeExpenseAbstract_019e40b4-44aa-7a4d-b397-a3893d271489" xlink:to="loc_us-gaap_GainsLossesOnExtinguishmentOfDebt_019e40b4-44aa-7b84-ad0d-d248dc2e6143" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ne_InterestIncomeAndOtherIncomeExpenseNetNonoperating_019e40b4-44aa-7167-95fb-7dc85449688f" xlink:href="ne-20260630.xsd#ne_InterestIncomeAndOtherIncomeExpenseNetNonoperating"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NonoperatingIncomeExpenseAbstract_019e40b4-44aa-7a4d-b397-a3893d271489" xlink:to="loc_ne_InterestIncomeAndOtherIncomeExpenseNetNonoperating_019e40b4-44aa-7167-95fb-7dc85449688f" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_019e40b4-44aa-7abb-bd83-4062d7b964d6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_019e40b4-44aa-7f6f-a1ee-7d690340de2e" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_019e40b4-44aa-7abb-bd83-4062d7b964d6" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxExpenseBenefit_019e40b4-44aa-7db2-9448-8e1b9a012725" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncomeTaxExpenseBenefit"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_019e40b4-44aa-7f6f-a1ee-7d690340de2e" xlink:to="loc_us-gaap_IncomeTaxExpenseBenefit_019e40b4-44aa-7db2-9448-8e1b9a012725" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_019e40b4-44aa-7259-a278-d59c63af64ae" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NetIncomeLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_019e40b4-44aa-7f6f-a1ee-7d690340de2e" xlink:to="loc_us-gaap_NetIncomeLoss_019e40b4-44aa-7259-a278-d59c63af64ae" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EarningsPerShareBasic_019e40b4-44aa-7895-add6-710e53f2aa4f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EarningsPerShareBasic"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_019e40b4-44aa-7f6f-a1ee-7d690340de2e" xlink:to="loc_us-gaap_EarningsPerShareBasic_019e40b4-44aa-7895-add6-710e53f2aa4f" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EarningsPerShareDiluted_019e40b4-44aa-79b8-9a48-7159d8425c68" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EarningsPerShareDiluted"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_019e40b4-44aa-7f6f-a1ee-7d690340de2e" xlink:to="loc_us-gaap_EarningsPerShareDiluted_019e40b4-44aa-79b8-9a48-7159d8425c68" xlink:type="arc" order="8"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.noblecorp.com/role/CONDENSEDCONSOLIDATEDSTATEMENTSOFEQUITY" xlink:type="simple" xlink:href="ne-20260630.xsd#CONDENSEDCONSOLIDATEDSTATEMENTSOFEQUITY"/>
  <link:definitionLink xlink:role="http://www.noblecorp.com/role/CONDENSEDCONSOLIDATEDSTATEMENTSOFEQUITY" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementLineItems_019e40b4-44aa-7aab-9ae9-d3e89eb1d253" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementTable_019e40b4-44aa-7a68-acd1-8161be7f94c8" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_019e40b4-44aa-7aab-9ae9-d3e89eb1d253" xlink:to="loc_us-gaap_StatementTable_019e40b4-44aa-7a68-acd1-8161be7f94c8" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementEquityComponentsAxis_019e40b4-44aa-7f37-af92-6e18b5f59ed0" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementEquityComponentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_019e40b4-44aa-7a68-acd1-8161be7f94c8" xlink:to="loc_us-gaap_StatementEquityComponentsAxis_019e40b4-44aa-7f37-af92-6e18b5f59ed0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_019e40b4-44aa-7f37-af92-6e18b5f59ed0_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EquityComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_019e40b4-44aa-7f37-af92-6e18b5f59ed0" xlink:to="loc_us-gaap_EquityComponentDomain_019e40b4-44aa-7f37-af92-6e18b5f59ed0_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_019e40b4-44aa-798b-a1e3-4c0508d877d5" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EquityComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_019e40b4-44aa-7f37-af92-6e18b5f59ed0" xlink:to="loc_us-gaap_EquityComponentDomain_019e40b4-44aa-798b-a1e3-4c0508d877d5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockMember_019e40b4-44aa-7792-9f2b-1f6840afdee9" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommonStockMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_019e40b4-44aa-798b-a1e3-4c0508d877d5" xlink:to="loc_us-gaap_CommonStockMember_019e40b4-44aa-7792-9f2b-1f6840afdee9" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdditionalPaidInCapitalMember_019e40b4-44aa-7d83-a46e-58657cd630c2" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AdditionalPaidInCapitalMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_019e40b4-44aa-798b-a1e3-4c0508d877d5" xlink:to="loc_us-gaap_AdditionalPaidInCapitalMember_019e40b4-44aa-7d83-a46e-58657cd630c2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetainedEarningsMember_019e40b4-44aa-782b-ba21-d74f2ffcce22" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RetainedEarningsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_019e40b4-44aa-798b-a1e3-4c0508d877d5" xlink:to="loc_us-gaap_RetainedEarningsMember_019e40b4-44aa-782b-ba21-d74f2ffcce22" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_019e40b4-44aa-7c37-aefe-d153bd2485fc" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_019e40b4-44aa-798b-a1e3-4c0508d877d5" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_019e40b4-44aa-7c37-aefe-d153bd2485fc" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_019e40b4-44aa-7019-aef9-ee25e38ad5a6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncreaseDecreaseInStockholdersEquityRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_019e40b4-44aa-7aab-9ae9-d3e89eb1d253" xlink:to="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_019e40b4-44aa-7019-aef9-ee25e38ad5a6" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockSharesOutstanding_019e40b4-44aa-75b5-91aa-368f59269ccd" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommonStockSharesOutstanding"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_019e40b4-44aa-7019-aef9-ee25e38ad5a6" xlink:to="loc_us-gaap_CommonStockSharesOutstanding_019e40b4-44aa-75b5-91aa-368f59269ccd" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquity_019e40b4-44aa-7350-a287-e23a61789f67" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockholdersEquity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_019e40b4-44aa-7019-aef9-ee25e38ad5a6" xlink:to="loc_us-gaap_StockholdersEquity_019e40b4-44aa-7350-a287-e23a61789f67" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ne_EmployeeRelatedEquityActivityAbstract_019e40b4-44aa-72e7-aa88-febc754583db" xlink:href="ne-20260630.xsd#ne_EmployeeRelatedEquityActivityAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_019e40b4-44aa-7019-aef9-ee25e38ad5a6" xlink:to="loc_ne_EmployeeRelatedEquityActivityAbstract_019e40b4-44aa-72e7-aa88-febc754583db" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue_019e40b4-44aa-7f2f-9a0a-de1494a7d35d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ne_EmployeeRelatedEquityActivityAbstract_019e40b4-44aa-72e7-aa88-febc754583db" xlink:to="loc_us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue_019e40b4-44aa-7f2f-9a0a-de1494a7d35d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensation_019e40b4-44aa-746e-8550-c284493bf0cf" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensation"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ne_EmployeeRelatedEquityActivityAbstract_019e40b4-44aa-72e7-aa88-febc754583db" xlink:to="loc_us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensation_019e40b4-44aa-746e-8550-c284493bf0cf" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation_019e40b4-44aa-75f9-a9f0-b077f28af82e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ne_EmployeeRelatedEquityActivityAbstract_019e40b4-44aa-72e7-aa88-febc754583db" xlink:to="loc_us-gaap_AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation_019e40b4-44aa-75f9-a9f0-b077f28af82e" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_ne_StockIssuedDuringPeriodSharesWarrantsExercised_019e40b4-44aa-771e-8b42-b6c08c3aaf22" xlink:href="ne-20260630.xsd#ne_StockIssuedDuringPeriodSharesWarrantsExercised"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_019e40b4-44aa-7019-aef9-ee25e38ad5a6" xlink:to="loc_ne_StockIssuedDuringPeriodSharesWarrantsExercised_019e40b4-44aa-771e-8b42-b6c08c3aaf22" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockAndWarrantsIssuedDuringPeriodValuePreferredStockAndWarrants_019e40b4-44aa-7b59-9bbc-c3651065d833" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockAndWarrantsIssuedDuringPeriodValuePreferredStockAndWarrants"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_019e40b4-44aa-7019-aef9-ee25e38ad5a6" xlink:to="loc_us-gaap_StockAndWarrantsIssuedDuringPeriodValuePreferredStockAndWarrants_019e40b4-44aa-7b59-9bbc-c3651065d833" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockRepurchasedAndRetiredDuringPeriodShares_019e40b4-44aa-70c9-b796-568717f5aab5" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockRepurchasedAndRetiredDuringPeriodShares"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_019e40b4-44aa-7019-aef9-ee25e38ad5a6" xlink:to="loc_us-gaap_StockRepurchasedAndRetiredDuringPeriodShares_019e40b4-44aa-70c9-b796-568717f5aab5" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockRepurchasedAndRetiredDuringPeriodValue_019e40b4-44aa-7cb6-8abe-e32f15e26c38" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockRepurchasedAndRetiredDuringPeriodValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_019e40b4-44aa-7019-aef9-ee25e38ad5a6" xlink:to="loc_us-gaap_StockRepurchasedAndRetiredDuringPeriodValue_019e40b4-44aa-7cb6-8abe-e32f15e26c38" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DividendsCommonStockCash_019e40b4-44aa-75a5-95a4-cf5bbc186d82" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DividendsCommonStockCash"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_019e40b4-44aa-7019-aef9-ee25e38ad5a6" xlink:to="loc_us-gaap_DividendsCommonStockCash_019e40b4-44aa-75a5-95a4-cf5bbc186d82" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_019e40b4-44aa-7f88-b4d6-efe68307759e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NetIncomeLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_019e40b4-44aa-7019-aef9-ee25e38ad5a6" xlink:to="loc_us-gaap_NetIncomeLoss_019e40b4-44aa-7f88-b4d6-efe68307759e" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent_019e40b4-44aa-7c59-8e09-b44dcdcaa978" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_019e40b4-44aa-7019-aef9-ee25e38ad5a6" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent_019e40b4-44aa-7c59-8e09-b44dcdcaa978" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockSharesOutstanding_019e40b4-44aa-75eb-a230-7dccb0054f88" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommonStockSharesOutstanding"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquity_019e40b4-44aa-754f-abd4-fd8ae0e04c7d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockholdersEquity"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.noblecorp.com/role/OrganizationandBasisofPresentationDetails" xlink:type="simple" xlink:href="ne-20260630.xsd#OrganizationandBasisofPresentationDetails"/>
  <link:definitionLink xlink:role="http://www.noblecorp.com/role/OrganizationandBasisofPresentationDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventLineItems_019e40b4-44aa-730f-b2ad-7a3f76afbfca" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SubsequentEventLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTable_019e40b4-44aa-74d0-9f5e-fdf436cc4813" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SubsequentEventTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_SubsequentEventLineItems_019e40b4-44aa-730f-b2ad-7a3f76afbfca" xlink:to="loc_us-gaap_SubsequentEventTable_019e40b4-44aa-74d0-9f5e-fdf436cc4813" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeAxis_019e40b4-44aa-7115-9eaf-616e9711af2d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SubsequentEventTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_SubsequentEventTable_019e40b4-44aa-74d0-9f5e-fdf436cc4813" xlink:to="loc_us-gaap_SubsequentEventTypeAxis_019e40b4-44aa-7115-9eaf-616e9711af2d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeDomain_019e40b4-44aa-7115-9eaf-616e9711af2d_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SubsequentEventTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_SubsequentEventTypeAxis_019e40b4-44aa-7115-9eaf-616e9711af2d" xlink:to="loc_us-gaap_SubsequentEventTypeDomain_019e40b4-44aa-7115-9eaf-616e9711af2d_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeDomain_019e40b4-44aa-72a9-9e09-f60956ac38ae" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SubsequentEventTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_SubsequentEventTypeAxis_019e40b4-44aa-7115-9eaf-616e9711af2d" xlink:to="loc_us-gaap_SubsequentEventTypeDomain_019e40b4-44aa-72a9-9e09-f60956ac38ae" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventMember_019e40b4-44aa-7f0d-a861-63b95553b066" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SubsequentEventMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsequentEventTypeDomain_019e40b4-44aa-72a9-9e09-f60956ac38ae" xlink:to="loc_us-gaap_SubsequentEventMember_019e40b4-44aa-7f0d-a861-63b95553b066" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ne_NumberOfRigs_019e40b4-44aa-73e9-be13-6112f9ed8344" xlink:href="ne-20260630.xsd#ne_NumberOfRigs"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsequentEventLineItems_019e40b4-44aa-730f-b2ad-7a3f76afbfca" xlink:to="loc_ne_NumberOfRigs_019e40b4-44aa-73e9-be13-6112f9ed8344" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ne_NumberOfFloaters_019e40b4-44aa-7d38-b9ba-553c434280bc" xlink:href="ne-20260630.xsd#ne_NumberOfFloaters"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsequentEventLineItems_019e40b4-44aa-730f-b2ad-7a3f76afbfca" xlink:to="loc_ne_NumberOfFloaters_019e40b4-44aa-7d38-b9ba-553c434280bc" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ne_NumberOfJackups_019e40b4-44aa-7a3f-b22d-56e3860916e6" xlink:href="ne-20260630.xsd#ne_NumberOfJackups"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsequentEventLineItems_019e40b4-44aa-730f-b2ad-7a3f76afbfca" xlink:to="loc_ne_NumberOfJackups_019e40b4-44aa-7a3f-b22d-56e3860916e6" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NumberOfReportableSegments_019e40b4-44aa-7dac-96e9-eb5893cf0bfd" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NumberOfReportableSegments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsequentEventLineItems_019e40b4-44aa-730f-b2ad-7a3f76afbfca" xlink:to="loc_us-gaap_NumberOfReportableSegments_019e40b4-44aa-7dac-96e9-eb5893cf0bfd" xlink:type="arc" order="3"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.noblecorp.com/role/EarningsLossPerShareScheduleofAntidilutiveSecuritiesExcludedfromDilutedIncomeLossPerShareDetails" xlink:type="simple" xlink:href="ne-20260630.xsd#EarningsLossPerShareScheduleofAntidilutiveSecuritiesExcludedfromDilutedIncomeLossPerShareDetails"/>
  <link:definitionLink xlink:role="http://www.noblecorp.com/role/EarningsLossPerShareScheduleofAntidilutiveSecuritiesExcludedfromDilutedIncomeLossPerShareDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems_019e40b4-44aa-7855-abf1-07b247d2235b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable_019e40b4-44aa-7e45-972d-fdfd115a3004" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems_019e40b4-44aa-7855-abf1-07b247d2235b" xlink:to="loc_us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable_019e40b4-44aa-7e45-972d-fdfd115a3004" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis_019e40b4-44aa-708f-9b0c-6d4332a7d3b4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable_019e40b4-44aa-7e45-972d-fdfd115a3004" xlink:to="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis_019e40b4-44aa-708f-9b0c-6d4332a7d3b4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AntidilutiveSecuritiesNameDomain_019e40b4-44aa-708f-9b0c-6d4332a7d3b4_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AntidilutiveSecuritiesNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis_019e40b4-44aa-708f-9b0c-6d4332a7d3b4" xlink:to="loc_us-gaap_AntidilutiveSecuritiesNameDomain_019e40b4-44aa-708f-9b0c-6d4332a7d3b4_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AntidilutiveSecuritiesNameDomain_019e40b4-44aa-747d-9ce2-997a37ecb86a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AntidilutiveSecuritiesNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis_019e40b4-44aa-708f-9b0c-6d4332a7d3b4" xlink:to="loc_us-gaap_AntidilutiveSecuritiesNameDomain_019e40b4-44aa-747d-9ce2-997a37ecb86a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockCompensationPlanMember_019f64a6-6434-7bc3-9c09-27fb4c6e949f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockCompensationPlanMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AntidilutiveSecuritiesNameDomain_019e40b4-44aa-747d-9ce2-997a37ecb86a" xlink:to="loc_us-gaap_StockCompensationPlanMember_019f64a6-6434-7bc3-9c09-27fb4c6e949f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_WarrantMember_019e40b4-44aa-7e29-b144-10cf4cc51731" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_WarrantMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AntidilutiveSecuritiesNameDomain_019e40b4-44aa-747d-9ce2-997a37ecb86a" xlink:to="loc_us-gaap_WarrantMember_019e40b4-44aa-7e29-b144-10cf4cc51731" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount_019e40b4-44aa-7756-9527-3e0454eb20cd" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems_019e40b4-44aa-7855-abf1-07b247d2235b" xlink:to="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount_019e40b4-44aa-7756-9527-3e0454eb20cd" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.noblecorp.com/role/EarningsLossPerShareAdditionalInformationDetails" xlink:type="simple" xlink:href="ne-20260630.xsd#EarningsLossPerShareAdditionalInformationDetails"/>
  <link:definitionLink xlink:role="http://www.noblecorp.com/role/EarningsLossPerShareAdditionalInformationDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems_019e40b4-44aa-74e8-9f63-7999eadae38a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable_019e40b4-44aa-78e4-8dbd-cdbcd1da1931" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems_019e40b4-44aa-74e8-9f63-7999eadae38a" xlink:to="loc_us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable_019e40b4-44aa-78e4-8dbd-cdbcd1da1931" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfWarrantOrRightAxis_019e40b4-44aa-794c-be4d-4ecaae54fc41" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ClassOfWarrantOrRightAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable_019e40b4-44aa-78e4-8dbd-cdbcd1da1931" xlink:to="loc_us-gaap_ClassOfWarrantOrRightAxis_019e40b4-44aa-794c-be4d-4ecaae54fc41" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfWarrantOrRightDomain_019e40b4-44aa-794c-be4d-4ecaae54fc41_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ClassOfWarrantOrRightDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_ClassOfWarrantOrRightAxis_019e40b4-44aa-794c-be4d-4ecaae54fc41" xlink:to="loc_us-gaap_ClassOfWarrantOrRightDomain_019e40b4-44aa-794c-be4d-4ecaae54fc41_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfWarrantOrRightDomain_019e40b4-44aa-7429-9d53-30cd5a3ddc41" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ClassOfWarrantOrRightDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_ClassOfWarrantOrRightAxis_019e40b4-44aa-794c-be4d-4ecaae54fc41" xlink:to="loc_us-gaap_ClassOfWarrantOrRightDomain_019e40b4-44aa-7429-9d53-30cd5a3ddc41" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ne_Tranche1WarrantsMember_019e40b4-44aa-78fe-bbea-5460d0e9b607" xlink:href="ne-20260630.xsd#ne_Tranche1WarrantsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfWarrantOrRightDomain_019e40b4-44aa-7429-9d53-30cd5a3ddc41" xlink:to="loc_ne_Tranche1WarrantsMember_019e40b4-44aa-78fe-bbea-5460d0e9b607" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ne_Tranche2WarrantsMember_019e40b4-44aa-780e-a198-fd1acba515dc" xlink:href="ne-20260630.xsd#ne_Tranche2WarrantsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfWarrantOrRightDomain_019e40b4-44aa-7429-9d53-30cd5a3ddc41" xlink:to="loc_ne_Tranche2WarrantsMember_019e40b4-44aa-780e-a198-fd1acba515dc" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ne_Tranche3WarrantsMember_019e40b4-44aa-7864-a1f3-d59b51a4d9ce" xlink:href="ne-20260630.xsd#ne_Tranche3WarrantsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfWarrantOrRightDomain_019e40b4-44aa-7429-9d53-30cd5a3ddc41" xlink:to="loc_ne_Tranche3WarrantsMember_019e40b4-44aa-7864-a1f3-d59b51a4d9ce" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PlanNameAxis_019e40b4-44aa-77f8-a232-bb4ef13288d8" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PlanNameAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable_019e40b4-44aa-78e4-8dbd-cdbcd1da1931" xlink:to="loc_us-gaap_PlanNameAxis_019e40b4-44aa-77f8-a232-bb4ef13288d8" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PlanNameDomain_019e40b4-44aa-77f8-a232-bb4ef13288d8_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_PlanNameAxis_019e40b4-44aa-77f8-a232-bb4ef13288d8" xlink:to="loc_us-gaap_PlanNameDomain_019e40b4-44aa-77f8-a232-bb4ef13288d8_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PlanNameDomain_019e40b4-44aa-7898-b4a1-3735fd921e92" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_PlanNameAxis_019e40b4-44aa-77f8-a232-bb4ef13288d8" xlink:to="loc_us-gaap_PlanNameDomain_019e40b4-44aa-7898-b4a1-3735fd921e92" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ne_A2022LongTermIncentivePlanMember_019e40b4-44aa-7d92-98b2-ffc73670563e" xlink:href="ne-20260630.xsd#ne_A2022LongTermIncentivePlanMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanNameDomain_019e40b4-44aa-7898-b4a1-3735fd921e92" xlink:to="loc_ne_A2022LongTermIncentivePlanMember_019e40b4-44aa-7d92-98b2-ffc73670563e" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ShareRepurchaseProgramAxis_019e40b4-44aa-7803-bc69-e1b5e14d9664" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ShareRepurchaseProgramAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable_019e40b4-44aa-78e4-8dbd-cdbcd1da1931" xlink:to="loc_srt_ShareRepurchaseProgramAxis_019e40b4-44aa-7803-bc69-e1b5e14d9664" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ShareRepurchaseProgramDomain_019e40b4-44aa-7803-bc69-e1b5e14d9664_default" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ShareRepurchaseProgramDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ShareRepurchaseProgramAxis_019e40b4-44aa-7803-bc69-e1b5e14d9664" xlink:to="loc_srt_ShareRepurchaseProgramDomain_019e40b4-44aa-7803-bc69-e1b5e14d9664_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ShareRepurchaseProgramDomain_019e40b4-44aa-77c4-9fdd-c83ef46b3c4e" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ShareRepurchaseProgramDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ShareRepurchaseProgramAxis_019e40b4-44aa-7803-bc69-e1b5e14d9664" xlink:to="loc_srt_ShareRepurchaseProgramDomain_019e40b4-44aa-77c4-9fdd-c83ef46b3c4e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ne_SharesAuthorizedForRepurchaseByShareholdersMember_019e40b4-44aa-74e5-bc90-e9bd47942a7a" xlink:href="ne-20260630.xsd#ne_SharesAuthorizedForRepurchaseByShareholdersMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ShareRepurchaseProgramDomain_019e40b4-44aa-77c4-9fdd-c83ef46b3c4e" xlink:to="loc_ne_SharesAuthorizedForRepurchaseByShareholdersMember_019e40b4-44aa-74e5-bc90-e9bd47942a7a" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockSharesOutstanding_019e40b4-44aa-7fb7-bb7e-6f46c4208ba7" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommonStockSharesOutstanding"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems_019e40b4-44aa-74e8-9f63-7999eadae38a" xlink:to="loc_us-gaap_CommonStockSharesOutstanding_019e40b4-44aa-7fb7-bb7e-6f46c4208ba7" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfWarrantOrRightOutstanding_019e40b4-44aa-7af6-a967-75b7fb04c1f0" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ClassOfWarrantOrRightOutstanding"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems_019e40b4-44aa-74e8-9f63-7999eadae38a" xlink:to="loc_us-gaap_ClassOfWarrantOrRightOutstanding_019e40b4-44aa-7af6-a967-75b7fb04c1f0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized_019e40b4-44aa-7df1-9b2b-3a70f0b838fc" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems_019e40b4-44aa-74e8-9f63-7999eadae38a" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized_019e40b4-44aa-7df1-9b2b-3a70f0b838fc" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockDividendsPerShareCashPaid_019e40b4-44aa-7c93-b52f-590f9077b9eb" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommonStockDividendsPerShareCashPaid"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems_019e40b4-44aa-74e8-9f63-7999eadae38a" xlink:to="loc_us-gaap_CommonStockDividendsPerShareCashPaid_019e40b4-44aa-7c93-b52f-590f9077b9eb" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_StockRepurchaseProgramAuthorizedAmount1_019e40b4-44aa-7f47-8286-e40e38d02945" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_StockRepurchaseProgramAuthorizedAmount1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems_019e40b4-44aa-74e8-9f63-7999eadae38a" xlink:to="loc_srt_StockRepurchaseProgramAuthorizedAmount1_019e40b4-44aa-7f47-8286-e40e38d02945" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_StockRepurchaseProgramNumberOfSharesAuthorizedToBeRepurchased_019e40b4-44aa-7e2e-9824-f412895f7429" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_StockRepurchaseProgramNumberOfSharesAuthorizedToBeRepurchased"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems_019e40b4-44aa-74e8-9f63-7999eadae38a" xlink:to="loc_srt_StockRepurchaseProgramNumberOfSharesAuthorizedToBeRepurchased_019e40b4-44aa-7e2e-9824-f412895f7429" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1_019e40b4-44aa-7516-a1be-a5d3f60f6090" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems_019e40b4-44aa-74e8-9f63-7999eadae38a" xlink:to="loc_us-gaap_StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1_019e40b4-44aa-7516-a1be-a5d3f60f6090" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockRepurchasedAndRetiredDuringPeriodShares_019e40b4-44aa-7d96-9233-460eb71809a9" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockRepurchasedAndRetiredDuringPeriodShares"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems_019e40b4-44aa-74e8-9f63-7999eadae38a" xlink:to="loc_us-gaap_StockRepurchasedAndRetiredDuringPeriodShares_019e40b4-44aa-7d96-9233-460eb71809a9" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByEachWarrantOrRight_019e40b4-44aa-7ab4-b939-21bab2b59e9a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByEachWarrantOrRight"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems_019e40b4-44aa-74e8-9f63-7999eadae38a" xlink:to="loc_us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByEachWarrantOrRight_019e40b4-44aa-7ab4-b939-21bab2b59e9a" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1_019e40b4-44aa-7f2d-a704-0fb0480cbdf8" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems_019e40b4-44aa-74e8-9f63-7999eadae38a" xlink:to="loc_us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1_019e40b4-44aa-7f2d-a704-0fb0480cbdf8" xlink:type="arc" order="9"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.noblecorp.com/role/PropertyandEquipmentScheduleofPropertyandEquipmentatCostDetails" xlink:type="simple" xlink:href="ne-20260630.xsd#PropertyandEquipmentScheduleofPropertyandEquipmentatCostDetails"/>
  <link:definitionLink xlink:role="http://www.noblecorp.com/role/PropertyandEquipmentScheduleofPropertyandEquipmentatCostDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentLineItems_019e40b4-44aa-75d2-910d-090b84740ea0" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PropertyPlantAndEquipmentLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_019e40b4-44aa-755c-95e8-f16965d48f85" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfPropertyPlantAndEquipmentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_019e40b4-44aa-75d2-910d-090b84740ea0" xlink:to="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_019e40b4-44aa-755c-95e8-f16965d48f85" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_019e40b4-44aa-752b-819a-91c5a402874e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PropertyPlantAndEquipmentByTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_019e40b4-44aa-755c-95e8-f16965d48f85" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_019e40b4-44aa-752b-819a-91c5a402874e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_019e40b4-44aa-752b-819a-91c5a402874e_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PropertyPlantAndEquipmentTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_019e40b4-44aa-752b-819a-91c5a402874e" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_019e40b4-44aa-752b-819a-91c5a402874e_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_019e40b4-44aa-740c-a67c-de664ee7efc8" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PropertyPlantAndEquipmentTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_019e40b4-44aa-752b-819a-91c5a402874e" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_019e40b4-44aa-740c-a67c-de664ee7efc8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ne_DrillingEquipmentAndFacilitiesMember_019e40b4-44aa-7a4f-9e63-bc72995df1a0" xlink:href="ne-20260630.xsd#ne_DrillingEquipmentAndFacilitiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_019e40b4-44aa-740c-a67c-de664ee7efc8" xlink:to="loc_ne_DrillingEquipmentAndFacilitiesMember_019e40b4-44aa-7a4f-9e63-bc72995df1a0" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConstructionInProgressMember_019e40b4-44aa-75b0-a77c-bed5542966e5" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ConstructionInProgressMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_019e40b4-44aa-740c-a67c-de664ee7efc8" xlink:to="loc_us-gaap_ConstructionInProgressMember_019e40b4-44aa-75b0-a77c-bed5542966e5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherCapitalizedPropertyPlantAndEquipmentMember_019e40b4-44aa-70a0-aa3e-b4dc2258d588" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherCapitalizedPropertyPlantAndEquipmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_019e40b4-44aa-740c-a67c-de664ee7efc8" xlink:to="loc_us-gaap_OtherCapitalizedPropertyPlantAndEquipmentMember_019e40b4-44aa-70a0-aa3e-b4dc2258d588" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentGross_019e40b4-44aa-7e20-a53e-fcb7bedafbff" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PropertyPlantAndEquipmentGross"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_019e40b4-44aa-75d2-910d-090b84740ea0" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentGross_019e40b4-44aa-7e20-a53e-fcb7bedafbff" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.noblecorp.com/role/PropertyandEquipmentAdditionalInformationDetails" xlink:type="simple" xlink:href="ne-20260630.xsd#PropertyandEquipmentAdditionalInformationDetails"/>
  <link:definitionLink xlink:role="http://www.noblecorp.com/role/PropertyandEquipmentAdditionalInformationDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentLineItems_019e40b4-44aa-7448-b016-1f1217929972" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PropertyPlantAndEquipmentLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_019e40b4-44aa-7dcb-a50a-7c4138300e04" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfPropertyPlantAndEquipmentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_019e40b4-44aa-7448-b016-1f1217929972" xlink:to="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_019e40b4-44aa-7dcb-a50a-7c4138300e04" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupClassificationAxis_019e40b4-44aa-7db2-b059-b87c3814c227" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DisposalGroupClassificationAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_019e40b4-44aa-7dcb-a50a-7c4138300e04" xlink:to="loc_us-gaap_DisposalGroupClassificationAxis_019e40b4-44aa-7db2-b059-b87c3814c227" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupClassificationDomain_019e40b4-44aa-7db2-b059-b87c3814c227_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DisposalGroupClassificationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DisposalGroupClassificationAxis_019e40b4-44aa-7db2-b059-b87c3814c227" xlink:to="loc_us-gaap_DisposalGroupClassificationDomain_019e40b4-44aa-7db2-b059-b87c3814c227_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupClassificationDomain_019e40b4-44aa-7c9f-a50a-441014a6fb42" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DisposalGroupClassificationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DisposalGroupClassificationAxis_019e40b4-44aa-7db2-b059-b87c3814c227" xlink:to="loc_us-gaap_DisposalGroupClassificationDomain_019e40b4-44aa-7c9f-a50a-441014a6fb42" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupHeldforsaleNotDiscontinuedOperationsMember_019e40b4-44aa-70d1-9460-c8a93dc8d15d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DisposalGroupHeldforsaleNotDiscontinuedOperationsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupClassificationDomain_019e40b4-44aa-7c9f-a50a-441014a6fb42" xlink:to="loc_us-gaap_DisposalGroupHeldforsaleNotDiscontinuedOperationsMember_019e40b4-44aa-70d1-9460-c8a93dc8d15d" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupDisposedOfBySaleNotDiscontinuedOperationsMember_019e40b4-44aa-7c13-84d9-1835e23c823c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DisposalGroupDisposedOfBySaleNotDiscontinuedOperationsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupClassificationDomain_019e40b4-44aa-7c9f-a50a-441014a6fb42" xlink:to="loc_us-gaap_DisposalGroupDisposedOfBySaleNotDiscontinuedOperationsMember_019e40b4-44aa-7c13-84d9-1835e23c823c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_019e40b4-44aa-7895-a918-a3249d82303e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PropertyPlantAndEquipmentByTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_019e40b4-44aa-7dcb-a50a-7c4138300e04" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_019e40b4-44aa-7895-a918-a3249d82303e" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_019e40b4-44aa-7895-a918-a3249d82303e_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PropertyPlantAndEquipmentTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_019e40b4-44aa-7895-a918-a3249d82303e" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_019e40b4-44aa-7895-a918-a3249d82303e_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_019e40b4-44aa-7b0d-b5fb-e6109826f233" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PropertyPlantAndEquipmentTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_019e40b4-44aa-7895-a918-a3249d82303e" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_019e40b4-44aa-7b0d-b5fb-e6109826f233" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ne_OceanApexMember_019f6eb5-a96e-7b97-97a3-4379ca6e462d" xlink:href="ne-20260630.xsd#ne_OceanApexMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_019e40b4-44aa-7b0d-b5fb-e6109826f233" xlink:to="loc_ne_OceanApexMember_019f6eb5-a96e-7b97-97a3-4379ca6e462d" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ne_NobleGlobetrotterIINobleResolveAndOceanApexMember_019e40b4-44aa-7c63-80e5-bf37c8c2a372" xlink:href="ne-20260630.xsd#ne_NobleGlobetrotterIINobleResolveAndOceanApexMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_019e40b4-44aa-7b0d-b5fb-e6109826f233" xlink:to="loc_ne_NobleGlobetrotterIINobleResolveAndOceanApexMember_019e40b4-44aa-7c63-80e5-bf37c8c2a372" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ne_PacificSciroccoMember_019ed53e-4a82-720a-bd25-1f64c34d13dc" xlink:href="ne-20260630.xsd#ne_PacificSciroccoMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_019e40b4-44aa-7b0d-b5fb-e6109826f233" xlink:to="loc_ne_PacificSciroccoMember_019ed53e-4a82-720a-bd25-1f64c34d13dc" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeAxis_019f6eba-3dde-78c1-a02b-62db0808b769" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SubsequentEventTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_019e40b4-44aa-7dcb-a50a-7c4138300e04" xlink:to="loc_us-gaap_SubsequentEventTypeAxis_019f6eba-3dde-78c1-a02b-62db0808b769" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeDomain_019f6eba-3dde-78c1-a02b-62db0808b769_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SubsequentEventTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_SubsequentEventTypeAxis_019f6eba-3dde-78c1-a02b-62db0808b769" xlink:to="loc_us-gaap_SubsequentEventTypeDomain_019f6eba-3dde-78c1-a02b-62db0808b769_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeDomain_019f6eba-3dde-7f8c-9a02-1158f3d4d4fe" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SubsequentEventTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_SubsequentEventTypeAxis_019f6eba-3dde-78c1-a02b-62db0808b769" xlink:to="loc_us-gaap_SubsequentEventTypeDomain_019f6eba-3dde-7f8c-9a02-1158f3d4d4fe" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventMember_019f6eba-5c0b-756b-82c9-b1aab1839808" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SubsequentEventMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsequentEventTypeDomain_019f6eba-3dde-7f8c-9a02-1158f3d4d4fe" xlink:to="loc_us-gaap_SubsequentEventMember_019f6eba-5c0b-756b-82c9-b1aab1839808" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ne_PaymentsForCapitalImprovementsIncludingCapitalizedInterest_019e40b4-44aa-7fa5-aaf1-19fcb25c5ed2" xlink:href="ne-20260630.xsd#ne_PaymentsForCapitalImprovementsIncludingCapitalizedInterest"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_019e40b4-44aa-7448-b016-1f1217929972" xlink:to="loc_ne_PaymentsForCapitalImprovementsIncludingCapitalizedInterest_019e40b4-44aa-7fa5-aaf1-19fcb25c5ed2" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ImpairmentOfLongLivedAssetsToBeDisposedOf_019f877f-e82a-72e4-a74d-418c4c04b942" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ImpairmentOfLongLivedAssetsToBeDisposedOf"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_019e40b4-44aa-7448-b016-1f1217929972" xlink:to="loc_us-gaap_ImpairmentOfLongLivedAssetsToBeDisposedOf_019f877f-e82a-72e4-a74d-418c4c04b942" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment_019e40b4-44aa-781e-896c-40c5199f0773" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_019e40b4-44aa-7448-b016-1f1217929972" xlink:to="loc_us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment_019e40b4-44aa-781e-896c-40c5199f0773" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationPropertyPlantAndEquipment_019e40b4-44aa-7e68-9716-18225e1fa187" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DisposalGroupIncludingDiscontinuedOperationPropertyPlantAndEquipment"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_019e40b4-44aa-7448-b016-1f1217929972" xlink:to="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationPropertyPlantAndEquipment_019e40b4-44aa-7e68-9716-18225e1fa187" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupNotDiscontinuedOperationGainLossOnDisposal_019e40b4-44aa-70e6-a1a2-aded990aa903" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DisposalGroupNotDiscontinuedOperationGainLossOnDisposal"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_019e40b4-44aa-7448-b016-1f1217929972" xlink:to="loc_us-gaap_DisposalGroupNotDiscontinuedOperationGainLossOnDisposal_019e40b4-44aa-70e6-a1a2-aded990aa903" xlink:type="arc" order="4"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.noblecorp.com/role/DebtAdditionalInformationDetails" xlink:type="simple" xlink:href="ne-20260630.xsd#DebtAdditionalInformationDetails"/>
  <link:definitionLink xlink:role="http://www.noblecorp.com/role/DebtAdditionalInformationDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentLineItems_019fa453-1e45-7537-b339-9cb9b79cfa76" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentTable_019e40b4-44aa-7c2f-b78d-2763646869e6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019fa453-1e45-7537-b339-9cb9b79cfa76" xlink:to="loc_us-gaap_DebtInstrumentTable_019e40b4-44aa-7c2f-b78d-2763646869e6" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentAxis_019fa453-1e45-7ee6-8829-ab4022872946" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_019e40b4-44aa-7c2f-b78d-2763646869e6" xlink:to="loc_us-gaap_DebtInstrumentAxis_019fa453-1e45-7ee6-8829-ab4022872946" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_019fa453-1e45-7ee6-8829-ab4022872946_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DebtInstrumentAxis_019fa453-1e45-7ee6-8829-ab4022872946" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_019fa453-1e45-7ee6-8829-ab4022872946_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_019fa453-1e45-7aba-9c31-4d7cf6f77148" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DebtInstrumentAxis_019fa453-1e45-7ee6-8829-ab4022872946" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_019fa453-1e45-7aba-9c31-4d7cf6f77148" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ne_SeniorSecuredSecondLienNotes8.500Due2030Member_019fa453-1e45-7eba-8b95-a268a39a91a1" xlink:href="ne-20260630.xsd#ne_SeniorSecuredSecondLienNotes8.500Due2030Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_019fa453-1e45-7aba-9c31-4d7cf6f77148" xlink:to="loc_ne_SeniorSecuredSecondLienNotes8.500Due2030Member_019fa453-1e45-7eba-8b95-a268a39a91a1" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ne_SeniorNotes8000Due2030Member_019fa453-1e45-7e88-9f3b-8d8034faf6ac" xlink:href="ne-20260630.xsd#ne_SeniorNotes8000Due2030Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_019fa453-1e45-7aba-9c31-4d7cf6f77148" xlink:to="loc_ne_SeniorNotes8000Due2030Member_019fa453-1e45-7e88-9f3b-8d8034faf6ac" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ne_A2023RevolvingCreditAgreementMember_019fa453-57d7-749c-8581-9a9bd122d6f6" xlink:href="ne-20260630.xsd#ne_A2023RevolvingCreditAgreementMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_019fa453-1e45-7aba-9c31-4d7cf6f77148" xlink:to="loc_ne_A2023RevolvingCreditAgreementMember_019fa453-57d7-749c-8581-9a9bd122d6f6" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ne_SeniorNotes6.250Due2034Member_019fa453-75b8-7279-8424-5d50ceee7ad0" xlink:href="ne-20260630.xsd#ne_SeniorNotes6.250Due2034Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_019fa453-1e45-7aba-9c31-4d7cf6f77148" xlink:to="loc_ne_SeniorNotes6.250Due2034Member_019fa453-75b8-7279-8424-5d50ceee7ad0" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_019fa453-1e45-7a52-a32b-517bd7511ab8" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongtermDebtTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_019e40b4-44aa-7c2f-b78d-2763646869e6" xlink:to="loc_us-gaap_LongtermDebtTypeAxis_019fa453-1e45-7a52-a32b-517bd7511ab8" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_019fa453-1e45-7a52-a32b-517bd7511ab8_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_019fa453-1e45-7a52-a32b-517bd7511ab8" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_019fa453-1e45-7a52-a32b-517bd7511ab8_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_019fa453-1e45-7976-a2d8-fea14195a19e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_019fa453-1e45-7a52-a32b-517bd7511ab8" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_019fa453-1e45-7976-a2d8-fea14195a19e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SeniorNotesMember_019fa453-1e45-73b8-8858-1f8e4b558eb9" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SeniorNotesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_019fa453-1e45-7976-a2d8-fea14195a19e" xlink:to="loc_us-gaap_SeniorNotesMember_019fa453-1e45-73b8-8858-1f8e4b558eb9" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditMember_019fa453-57d7-7bdc-bdbd-46c284451496" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LineOfCreditMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_019fa453-1e45-7976-a2d8-fea14195a19e" xlink:to="loc_us-gaap_LineOfCreditMember_019fa453-57d7-7bdc-bdbd-46c284451496" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityAxis_019fa453-57d7-702f-bf38-7023ca32c0ed" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CreditFacilityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_019e40b4-44aa-7c2f-b78d-2763646869e6" xlink:to="loc_us-gaap_CreditFacilityAxis_019fa453-57d7-702f-bf38-7023ca32c0ed" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityDomain_019fa453-57d7-702f-bf38-7023ca32c0ed_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CreditFacilityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_CreditFacilityAxis_019fa453-57d7-702f-bf38-7023ca32c0ed" xlink:to="loc_us-gaap_CreditFacilityDomain_019fa453-57d7-702f-bf38-7023ca32c0ed_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityDomain_019fa453-57d7-788b-a70a-d5b47893a0d2" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CreditFacilityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_CreditFacilityAxis_019fa453-57d7-702f-bf38-7023ca32c0ed" xlink:to="loc_us-gaap_CreditFacilityDomain_019fa453-57d7-788b-a70a-d5b47893a0d2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevolvingCreditFacilityMember_019fa453-57d7-7f8d-b99e-faab8e45b17d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RevolvingCreditFacilityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CreditFacilityDomain_019fa453-57d7-788b-a70a-d5b47893a0d2" xlink:to="loc_us-gaap_RevolvingCreditFacilityMember_019fa453-57d7-7f8d-b99e-faab8e45b17d" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentRepurchasedFaceAmount_019fa453-1e45-736e-bbe3-17c94624254f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentRepurchasedFaceAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019fa453-1e45-7537-b339-9cb9b79cfa76" xlink:to="loc_us-gaap_DebtInstrumentRepurchasedFaceAmount_019fa453-1e45-736e-bbe3-17c94624254f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_019fa453-1e45-7561-90ec-8434d4c0ac6e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentInterestRateStatedPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019fa453-1e45-7537-b339-9cb9b79cfa76" xlink:to="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_019fa453-1e45-7561-90ec-8434d4c0ac6e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RepaymentsOfLongTermDebt_019fa453-1e45-76e9-9213-60156dcd8941" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RepaymentsOfLongTermDebt"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019fa453-1e45-7537-b339-9cb9b79cfa76" xlink:to="loc_us-gaap_RepaymentsOfLongTermDebt_019fa453-1e45-76e9-9213-60156dcd8941" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GainLossOnRepurchaseOfDebtInstrument_019fa453-1e45-7b88-bd02-223299814875" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_GainLossOnRepurchaseOfDebtInstrument"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019fa453-1e45-7537-b339-9cb9b79cfa76" xlink:to="loc_us-gaap_GainLossOnRepurchaseOfDebtInstrument_019fa453-1e45-7b88-bd02-223299814875" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_019fa453-57d7-7319-a0bd-892f232b63bc" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019fa453-1e45-7537-b339-9cb9b79cfa76" xlink:to="loc_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_019fa453-57d7-7319-a0bd-892f232b63bc" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebt_019fa453-57d7-7c81-8c6c-93f1db0b8fe7" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongTermDebt"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019fa453-1e45-7537-b339-9cb9b79cfa76" xlink:to="loc_us-gaap_LongTermDebt_019fa453-57d7-7c81-8c6c-93f1db0b8fe7" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LettersOfCreditOutstandingAmount_019fa453-57d7-731b-8cb0-dbfc42577cec" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LettersOfCreditOutstandingAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019fa453-1e45-7537-b339-9cb9b79cfa76" xlink:to="loc_us-gaap_LettersOfCreditOutstandingAmount_019fa453-57d7-731b-8cb0-dbfc42577cec" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentFaceAmount_019fa453-75b8-7209-95b0-e960e424635b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentFaceAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019fa453-1e45-7537-b339-9cb9b79cfa76" xlink:to="loc_us-gaap_DebtInstrumentFaceAmount_019fa453-75b8-7209-95b0-e960e424635b" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_ne_DebtInstrumentPremiumPercentage_019fa453-75b8-77b7-ab21-65bf91f192ac" xlink:href="ne-20260630.xsd#ne_DebtInstrumentPremiumPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019fa453-1e45-7537-b339-9cb9b79cfa76" xlink:to="loc_ne_DebtInstrumentPremiumPercentage_019fa453-75b8-77b7-ab21-65bf91f192ac" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_ne_OperatingIncomeLossFromSubsidiaryToParentDifferenceAmount_019fa453-b908-74ff-bdfd-acc98366ed0e" xlink:href="ne-20260630.xsd#ne_OperatingIncomeLossFromSubsidiaryToParentDifferenceAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019fa453-1e45-7537-b339-9cb9b79cfa76" xlink:to="loc_ne_OperatingIncomeLossFromSubsidiaryToParentDifferenceAmount_019fa453-b908-74ff-bdfd-acc98366ed0e" xlink:type="arc" order="9"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.noblecorp.com/role/DebtScheduleofLongTermDebtNetDetails" xlink:type="simple" xlink:href="ne-20260630.xsd#DebtScheduleofLongTermDebtNetDetails"/>
  <link:definitionLink xlink:role="http://www.noblecorp.com/role/DebtScheduleofLongTermDebtNetDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentLineItems_019e40b4-44aa-7a12-b1bb-b2625f10e8e0" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentTable_019e40b4-44aa-72d1-a6f1-395131cb655e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019e40b4-44aa-7a12-b1bb-b2625f10e8e0" xlink:to="loc_us-gaap_DebtInstrumentTable_019e40b4-44aa-72d1-a6f1-395131cb655e" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentAxis_019e40b4-44aa-7b94-aed3-2074193050c6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_019e40b4-44aa-72d1-a6f1-395131cb655e" xlink:to="loc_us-gaap_DebtInstrumentAxis_019e40b4-44aa-7b94-aed3-2074193050c6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_019e40b4-44aa-7b94-aed3-2074193050c6_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DebtInstrumentAxis_019e40b4-44aa-7b94-aed3-2074193050c6" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_019e40b4-44aa-7b94-aed3-2074193050c6_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_019e40b4-44aa-72c2-a0c6-257f05283e2c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DebtInstrumentAxis_019e40b4-44aa-7b94-aed3-2074193050c6" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_019e40b4-44aa-72c2-a0c6-257f05283e2c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ne_SeniorNotes8000Due2030Member_019e40b4-44aa-751d-9d52-e932e32b4964" xlink:href="ne-20260630.xsd#ne_SeniorNotes8000Due2030Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_019e40b4-44aa-72c2-a0c6-257f05283e2c" xlink:to="loc_ne_SeniorNotes8000Due2030Member_019e40b4-44aa-751d-9d52-e932e32b4964" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ne_SeniorSecuredSecondLienNotes8.500Due2030Member_019e40b4-44aa-7f1f-b414-51833ff12452" xlink:href="ne-20260630.xsd#ne_SeniorSecuredSecondLienNotes8.500Due2030Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_019e40b4-44aa-72c2-a0c6-257f05283e2c" xlink:to="loc_ne_SeniorSecuredSecondLienNotes8.500Due2030Member_019e40b4-44aa-7f1f-b414-51833ff12452" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ne_SeniorNotes6.250Due2034Member_019ed8f7-c1b4-77f8-94ec-7ffadf141ba7" xlink:href="ne-20260630.xsd#ne_SeniorNotes6.250Due2034Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_019e40b4-44aa-72c2-a0c6-257f05283e2c" xlink:to="loc_ne_SeniorNotes6.250Due2034Member_019ed8f7-c1b4-77f8-94ec-7ffadf141ba7" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByMeasurementBasisAxis_019e40b4-44aa-7755-8a79-a72d92c34864" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueByMeasurementBasisAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_019e40b4-44aa-72d1-a6f1-395131cb655e" xlink:to="loc_us-gaap_FairValueByMeasurementBasisAxis_019e40b4-44aa-7755-8a79-a72d92c34864" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_019e40b4-44aa-7755-8a79-a72d92c34864_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PortionAtFairValueFairValueDisclosureMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByMeasurementBasisAxis_019e40b4-44aa-7755-8a79-a72d92c34864" xlink:to="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_019e40b4-44aa-7755-8a79-a72d92c34864_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueDisclosureItemAmountsDomain_019e40b4-44aa-75da-8be1-b80c9cf6e818" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueDisclosureItemAmountsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByMeasurementBasisAxis_019e40b4-44aa-7755-8a79-a72d92c34864" xlink:to="loc_us-gaap_FairValueDisclosureItemAmountsDomain_019e40b4-44aa-75da-8be1-b80c9cf6e818" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_019e40b4-44aa-7980-9356-2b4bd7bc5496" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PortionAtFairValueFairValueDisclosureMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueDisclosureItemAmountsDomain_019e40b4-44aa-75da-8be1-b80c9cf6e818" xlink:to="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_019e40b4-44aa-7980-9356-2b4bd7bc5496" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CarryingReportedAmountFairValueDisclosureMember_019e40b4-44aa-707a-8111-b6e594289fe0" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CarryingReportedAmountFairValueDisclosureMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_019e40b4-44aa-7980-9356-2b4bd7bc5496" xlink:to="loc_us-gaap_CarryingReportedAmountFairValueDisclosureMember_019e40b4-44aa-707a-8111-b6e594289fe0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EstimateOfFairValueFairValueDisclosureMember_019e40b4-44aa-70a3-be4e-2247a5fc8e64" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EstimateOfFairValueFairValueDisclosureMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_019e40b4-44aa-7980-9356-2b4bd7bc5496" xlink:to="loc_us-gaap_EstimateOfFairValueFairValueDisclosureMember_019e40b4-44aa-70a3-be4e-2247a5fc8e64" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_019e40b4-44aa-74b4-9830-e33baffab136" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongtermDebtTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_019e40b4-44aa-72d1-a6f1-395131cb655e" xlink:to="loc_us-gaap_LongtermDebtTypeAxis_019e40b4-44aa-74b4-9830-e33baffab136" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_019e40b4-44aa-74b4-9830-e33baffab136_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_019e40b4-44aa-74b4-9830-e33baffab136" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_019e40b4-44aa-74b4-9830-e33baffab136_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_019e40b4-44aa-7d12-bec9-acac99732340" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_019e40b4-44aa-74b4-9830-e33baffab136" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_019e40b4-44aa-7d12-bec9-acac99732340" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SecuredDebtMember_019e40b4-44aa-7582-9438-226192f73068" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SecuredDebtMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_019e40b4-44aa-7d12-bec9-acac99732340" xlink:to="loc_us-gaap_SecuredDebtMember_019e40b4-44aa-7582-9438-226192f73068" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditMember_019e40b4-44aa-72bc-b302-c904c97fa904" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LineOfCreditMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_019e40b4-44aa-7d12-bec9-acac99732340" xlink:to="loc_us-gaap_LineOfCreditMember_019e40b4-44aa-72bc-b302-c904c97fa904" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityAxis_019e40b4-44aa-7e50-9064-352c74082ce2" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CreditFacilityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_019e40b4-44aa-72d1-a6f1-395131cb655e" xlink:to="loc_us-gaap_CreditFacilityAxis_019e40b4-44aa-7e50-9064-352c74082ce2" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityDomain_019e40b4-44aa-7e50-9064-352c74082ce2_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CreditFacilityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_CreditFacilityAxis_019e40b4-44aa-7e50-9064-352c74082ce2" xlink:to="loc_us-gaap_CreditFacilityDomain_019e40b4-44aa-7e50-9064-352c74082ce2_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityDomain_019e40b4-44aa-74c9-be1a-42da8902586b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CreditFacilityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_CreditFacilityAxis_019e40b4-44aa-7e50-9064-352c74082ce2" xlink:to="loc_us-gaap_CreditFacilityDomain_019e40b4-44aa-74c9-be1a-42da8902586b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevolvingCreditFacilityMember_019e40b4-44aa-78af-af99-2af0f00dba47" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RevolvingCreditFacilityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CreditFacilityDomain_019e40b4-44aa-74c9-be1a-42da8902586b" xlink:to="loc_us-gaap_RevolvingCreditFacilityMember_019e40b4-44aa-78af-af99-2af0f00dba47" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_019e40b4-44aa-7ff3-b3c2-2f26bd99dadb" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentInterestRateStatedPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019e40b4-44aa-7a12-b1bb-b2625f10e8e0" xlink:to="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_019e40b4-44aa-7ff3-b3c2-2f26bd99dadb" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebt_019e40b4-44aa-7122-a076-679b408584de" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongTermDebt"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019e40b4-44aa-7a12-b1bb-b2625f10e8e0" xlink:to="loc_us-gaap_LongTermDebt_019e40b4-44aa-7122-a076-679b408584de" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtCurrent_019e40b4-44aa-735d-9778-80ae4122bdfb" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongTermDebtCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019e40b4-44aa-7a12-b1bb-b2625f10e8e0" xlink:to="loc_us-gaap_LongTermDebtCurrent_019e40b4-44aa-735d-9778-80ae4122bdfb" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtNoncurrent_019e40b4-44aa-7cfc-9ed7-6f689bba1b04" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongTermDebtNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019e40b4-44aa-7a12-b1bb-b2625f10e8e0" xlink:to="loc_us-gaap_LongTermDebtNoncurrent_019e40b4-44aa-7cfc-9ed7-6f689bba1b04" xlink:type="arc" order="3"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.noblecorp.com/role/RevenueandCustomersScheduleofDisaggregationofRevenuebyRigTypesDetails" xlink:type="simple" xlink:href="ne-20260630.xsd#RevenueandCustomersScheduleofDisaggregationofRevenuebyRigTypesDetails"/>
  <link:definitionLink xlink:role="http://www.noblecorp.com/role/RevenueandCustomersScheduleofDisaggregationofRevenuebyRigTypesDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisaggregationOfRevenueLineItems_019e40b4-44aa-75cd-bd93-52ec30d5c097" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DisaggregationOfRevenueLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisaggregationOfRevenueTable_019e40b4-44aa-70e8-8cdb-4be05ee702b4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DisaggregationOfRevenueTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_019e40b4-44aa-75cd-bd93-52ec30d5c097" xlink:to="loc_us-gaap_DisaggregationOfRevenueTable_019e40b4-44aa-70e8-8cdb-4be05ee702b4" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductOrServiceAxis_019e40b4-44aa-7756-bdd6-c935863bafb5" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ProductOrServiceAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DisaggregationOfRevenueTable_019e40b4-44aa-70e8-8cdb-4be05ee702b4" xlink:to="loc_srt_ProductOrServiceAxis_019e40b4-44aa-7756-bdd6-c935863bafb5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_019e40b4-44aa-7756-bdd6-c935863bafb5_default" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ProductsAndServicesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ProductOrServiceAxis_019e40b4-44aa-7756-bdd6-c935863bafb5" xlink:to="loc_srt_ProductsAndServicesDomain_019e40b4-44aa-7756-bdd6-c935863bafb5_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_019e40b4-44aa-7074-a3f7-71b15e1e2380" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ProductsAndServicesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ProductOrServiceAxis_019e40b4-44aa-7756-bdd6-c935863bafb5" xlink:to="loc_srt_ProductsAndServicesDomain_019e40b4-44aa-7074-a3f7-71b15e1e2380" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OilAndGasServiceMember_019e40b4-44aa-71f9-8f27-d6ff45c4b40b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OilAndGasServiceMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_019e40b4-44aa-7074-a3f7-71b15e1e2380" xlink:to="loc_us-gaap_OilAndGasServiceMember_019e40b4-44aa-71f9-8f27-d6ff45c4b40b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ne_FloatersMember_019e40b4-44aa-7c96-8d90-2c868dcc98fe" xlink:href="ne-20260630.xsd#ne_FloatersMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OilAndGasServiceMember_019e40b4-44aa-71f9-8f27-d6ff45c4b40b" xlink:to="loc_ne_FloatersMember_019e40b4-44aa-7c96-8d90-2c868dcc98fe" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ne_JackupsMember_019e40b4-44aa-7b26-977c-a044bfeea5cc" xlink:href="ne-20260630.xsd#ne_JackupsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OilAndGasServiceMember_019e40b4-44aa-71f9-8f27-d6ff45c4b40b" xlink:to="loc_ne_JackupsMember_019e40b4-44aa-7b26-977c-a044bfeea5cc" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_019e40b4-44aa-7677-9507-75869f2951d8" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_019e40b4-44aa-75cd-bd93-52ec30d5c097" xlink:to="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_019e40b4-44aa-7677-9507-75869f2951d8" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.noblecorp.com/role/RevenueandCustomersAdditionalInformationDetails" xlink:type="simple" xlink:href="ne-20260630.xsd#RevenueandCustomersAdditionalInformationDetails"/>
  <link:definitionLink xlink:role="http://www.noblecorp.com/role/RevenueandCustomersAdditionalInformationDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisaggregationOfRevenueLineItems_019e40b4-44aa-71f3-a6f8-1346afac4bad" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DisaggregationOfRevenueLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisaggregationOfRevenueTable_019e40b4-44aa-7563-b5a3-fd689ae1c1ed" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DisaggregationOfRevenueTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_019e40b4-44aa-71f3-a6f8-1346afac4bad" xlink:to="loc_us-gaap_DisaggregationOfRevenueTable_019e40b4-44aa-7563-b5a3-fd689ae1c1ed" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_019e40b4-44aa-70d2-a204-8003ffd319e2" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_RangeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DisaggregationOfRevenueTable_019e40b4-44aa-7563-b5a3-fd689ae1c1ed" xlink:to="loc_srt_RangeAxis_019e40b4-44aa-70d2-a204-8003ffd319e2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_019e40b4-44aa-70d2-a204-8003ffd319e2_default" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_019e40b4-44aa-70d2-a204-8003ffd319e2" xlink:to="loc_srt_RangeMember_019e40b4-44aa-70d2-a204-8003ffd319e2_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_019e40b4-44aa-73d1-85a4-14f857dcb03a" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_019e40b4-44aa-70d2-a204-8003ffd319e2" xlink:to="loc_srt_RangeMember_019e40b4-44aa-73d1-85a4-14f857dcb03a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember_019e40b4-44aa-7e19-babb-a8ea1326b563" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_MinimumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_019e40b4-44aa-73d1-85a4-14f857dcb03a" xlink:to="loc_srt_MinimumMember_019e40b4-44aa-7e19-babb-a8ea1326b563" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_019e40b4-44aa-7be7-9eed-3a1fe24e79a3" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_MaximumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_019e40b4-44aa-73d1-85a4-14f857dcb03a" xlink:to="loc_srt_MaximumMember_019e40b4-44aa-7be7-9eed-3a1fe24e79a3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAxis_019e40b4-44aa-7df3-b8ab-f455a5b3857e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessAcquisitionAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DisaggregationOfRevenueTable_019e40b4-44aa-7563-b5a3-fd689ae1c1ed" xlink:to="loc_us-gaap_BusinessAcquisitionAxis_019e40b4-44aa-7df3-b8ab-f455a5b3857e" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_019e40b4-44aa-7df3-b8ab-f455a5b3857e_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessAcquisitionAcquireeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_019e40b4-44aa-7df3-b8ab-f455a5b3857e" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_019e40b4-44aa-7df3-b8ab-f455a5b3857e_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_019e40b4-44aa-73e0-80e5-b69cf9ef1f9d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessAcquisitionAcquireeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_019e40b4-44aa-7df3-b8ab-f455a5b3857e" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_019e40b4-44aa-73e0-80e5-b69cf9ef1f9d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ne_DiamondOffshoreDrillingInc.Member_019e40b4-44aa-7c38-9d14-cde352e6f1f1" xlink:href="ne-20260630.xsd#ne_DiamondOffshoreDrillingInc.Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_019e40b4-44aa-73e0-80e5-b69cf9ef1f9d" xlink:to="loc_ne_DiamondOffshoreDrillingInc.Member_019e40b4-44aa-7c38-9d14-cde352e6f1f1" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ne_RevenuePerformanceObligationPaymentTerms_019e40b4-44aa-74d1-8243-d69ca98ac208" xlink:href="ne-20260630.xsd#ne_RevenuePerformanceObligationPaymentTerms"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_019e40b4-44aa-71f3-a6f8-1346afac4bad" xlink:to="loc_ne_RevenuePerformanceObligationPaymentTerms_019e40b4-44aa-74d1-8243-d69ca98ac208" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ne_UnfavorableCustomerContractsFairValueAdjustment_019e40b4-44aa-7631-a1b1-ebcfb4484192" xlink:href="ne-20260630.xsd#ne_UnfavorableCustomerContractsFairValueAdjustment"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_019e40b4-44aa-71f3-a6f8-1346afac4bad" xlink:to="loc_ne_UnfavorableCustomerContractsFairValueAdjustment_019e40b4-44aa-7631-a1b1-ebcfb4484192" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.noblecorp.com/role/RevenueandCustomersFavorableandUnfavorableContractsDetails" xlink:type="simple" xlink:href="ne-20260630.xsd#RevenueandCustomersFavorableandUnfavorableContractsDetails"/>
  <link:definitionLink xlink:role="http://www.noblecorp.com/role/RevenueandCustomersFavorableandUnfavorableContractsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisaggregationOfRevenueLineItems_019e40b4-457c-7da3-8d7c-2805ded5e993" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DisaggregationOfRevenueLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisaggregationOfRevenueTable_019e40b4-44aa-706d-9f33-e0a8fca8c351" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DisaggregationOfRevenueTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_019e40b4-457c-7da3-8d7c-2805ded5e993" xlink:to="loc_us-gaap_DisaggregationOfRevenueTable_019e40b4-44aa-706d-9f33-e0a8fca8c351" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductOrServiceAxis_019e40b4-44aa-7b85-9978-d30dd515a351" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ProductOrServiceAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DisaggregationOfRevenueTable_019e40b4-44aa-706d-9f33-e0a8fca8c351" xlink:to="loc_srt_ProductOrServiceAxis_019e40b4-44aa-7b85-9978-d30dd515a351" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_019e40b4-44aa-7b85-9978-d30dd515a351_default" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ProductsAndServicesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ProductOrServiceAxis_019e40b4-44aa-7b85-9978-d30dd515a351" xlink:to="loc_srt_ProductsAndServicesDomain_019e40b4-44aa-7b85-9978-d30dd515a351_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_019e40b4-44aa-7128-a833-bbf5d832632f" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ProductsAndServicesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ProductOrServiceAxis_019e40b4-44aa-7b85-9978-d30dd515a351" xlink:to="loc_srt_ProductsAndServicesDomain_019e40b4-44aa-7128-a833-bbf5d832632f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ne_UnfavorableCustomerContactsMember_019e40b4-457c-7aa7-badb-ac9a21377dca" xlink:href="ne-20260630.xsd#ne_UnfavorableCustomerContactsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_019e40b4-44aa-7128-a833-bbf5d832632f" xlink:to="loc_ne_UnfavorableCustomerContactsMember_019e40b4-457c-7aa7-badb-ac9a21377dca" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ne_FavorableCustomerContractsMember_019e40b4-457c-70b0-95e1-b526d89c31ca" xlink:href="ne-20260630.xsd#ne_FavorableCustomerContractsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_019e40b4-44aa-7128-a833-bbf5d832632f" xlink:to="loc_ne_FavorableCustomerContractsMember_019e40b4-457c-70b0-95e1-b526d89c31ca" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ne_ChangeInContractWithCustomerLiabilityRollForward_019e40b4-457c-7d2f-bee5-86496c9db1bb" xlink:href="ne-20260630.xsd#ne_ChangeInContractWithCustomerLiabilityRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_019e40b4-457c-7da3-8d7c-2805ded5e993" xlink:to="loc_ne_ChangeInContractWithCustomerLiabilityRollForward_019e40b4-457c-7d2f-bee5-86496c9db1bb" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractWithCustomerLiabilityNoncurrent_019e40b4-457c-7cee-9931-983ff01849d2" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ContractWithCustomerLiabilityNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ne_ChangeInContractWithCustomerLiabilityRollForward_019e40b4-457c-7d2f-bee5-86496c9db1bb" xlink:to="loc_us-gaap_ContractWithCustomerLiabilityNoncurrent_019e40b4-457c-7cee-9931-983ff01849d2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ne_ContractWithCustomerLiabilityAmortizationOfDeferredRevenue_019e40b4-457c-7e7d-8119-d7045723d94d" xlink:href="ne-20260630.xsd#ne_ContractWithCustomerLiabilityAmortizationOfDeferredRevenue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ne_ChangeInContractWithCustomerLiabilityRollForward_019e40b4-457c-7d2f-bee5-86496c9db1bb" xlink:to="loc_ne_ContractWithCustomerLiabilityAmortizationOfDeferredRevenue_019e40b4-457c-7e7d-8119-d7045723d94d" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractWithCustomerLiabilityNoncurrent_019e40b4-457c-7463-8716-a5ac26f86e2a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ContractWithCustomerLiabilityNoncurrent"/>
    <link:loc xlink:type="locator" xlink:label="loc_ne_ChangeInContractWithCustomerAssetsRollForward_019e40b4-457c-7de9-841b-fb0ba91ed5c9" xlink:href="ne-20260630.xsd#ne_ChangeInContractWithCustomerAssetsRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_019e40b4-457c-7da3-8d7c-2805ded5e993" xlink:to="loc_ne_ChangeInContractWithCustomerAssetsRollForward_019e40b4-457c-7de9-841b-fb0ba91ed5c9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractWithCustomerAssetNet_019e40b4-457c-755a-b5af-c4b823d3ea13" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ContractWithCustomerAssetNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ne_ChangeInContractWithCustomerAssetsRollForward_019e40b4-457c-7de9-841b-fb0ba91ed5c9" xlink:to="loc_us-gaap_ContractWithCustomerAssetNet_019e40b4-457c-755a-b5af-c4b823d3ea13" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractWithCustomerAssetCreditLossExpense_019e40b4-457c-7be1-8d91-2c70a74ca874" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ContractWithCustomerAssetCreditLossExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ne_ChangeInContractWithCustomerAssetsRollForward_019e40b4-457c-7de9-841b-fb0ba91ed5c9" xlink:to="loc_us-gaap_ContractWithCustomerAssetCreditLossExpense_019e40b4-457c-7be1-8d91-2c70a74ca874" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractWithCustomerAssetNet_019e40b4-457c-7a6d-8e9e-69508a589e53" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ContractWithCustomerAssetNet"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.noblecorp.com/role/IncomeTaxesDetails" xlink:type="simple" xlink:href="ne-20260630.xsd#IncomeTaxesDetails"/>
  <link:definitionLink xlink:role="http://www.noblecorp.com/role/IncomeTaxesDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EffectiveIncomeTaxRateReconciliationLineItems_019e40b4-457c-7908-a3fc-bd51cb160040" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EffectiveIncomeTaxRateReconciliationLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EffectiveIncomeTaxRateReconciliationTable_019e40b4-457c-74ae-b7db-aba45a2cbc00" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EffectiveIncomeTaxRateReconciliationTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_EffectiveIncomeTaxRateReconciliationLineItems_019e40b4-457c-7908-a3fc-bd51cb160040" xlink:to="loc_us-gaap_EffectiveIncomeTaxRateReconciliationTable_019e40b4-457c-74ae-b7db-aba45a2cbc00" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxAuthorityAxis_019e40b4-457c-747c-9e46-a4e93dce3edc" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncomeTaxAuthorityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_EffectiveIncomeTaxRateReconciliationTable_019e40b4-457c-74ae-b7db-aba45a2cbc00" xlink:to="loc_us-gaap_IncomeTaxAuthorityAxis_019e40b4-457c-747c-9e46-a4e93dce3edc" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxAuthorityDomain_019e40b4-457c-747c-9e46-a4e93dce3edc_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncomeTaxAuthorityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_IncomeTaxAuthorityAxis_019e40b4-457c-747c-9e46-a4e93dce3edc" xlink:to="loc_us-gaap_IncomeTaxAuthorityDomain_019e40b4-457c-747c-9e46-a4e93dce3edc_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxAuthorityDomain_019e40b4-457c-7df8-a361-0e6c7dfe19c0" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncomeTaxAuthorityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_IncomeTaxAuthorityAxis_019e40b4-457c-747c-9e46-a4e93dce3edc" xlink:to="loc_us-gaap_IncomeTaxAuthorityDomain_019e40b4-457c-7df8-a361-0e6c7dfe19c0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ForeignCountryMember_019e40b4-457c-77eb-81fa-9686c8fe7462" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ForeignCountryMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeTaxAuthorityDomain_019e40b4-457c-7df8-a361-0e6c7dfe19c0" xlink:to="loc_us-gaap_ForeignCountryMember_019e40b4-457c-77eb-81fa-9686c8fe7462" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ne_ForeignAndDomesticTaxJurisdictionMember_019e40b4-457c-7e1a-a137-d0a695d35fc7" xlink:href="ne-20260630.xsd#ne_ForeignAndDomesticTaxJurisdictionMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeTaxAuthorityDomain_019e40b4-457c-7df8-a361-0e6c7dfe19c0" xlink:to="loc_ne_ForeignAndDomesticTaxJurisdictionMember_019e40b4-457c-7e1a-a137-d0a695d35fc7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxAuthorityNameAxis_019e40b4-457c-7934-b3b3-9ae76fb51914" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncomeTaxAuthorityNameAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_EffectiveIncomeTaxRateReconciliationTable_019e40b4-457c-74ae-b7db-aba45a2cbc00" xlink:to="loc_us-gaap_IncomeTaxAuthorityNameAxis_019e40b4-457c-7934-b3b3-9ae76fb51914" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxAuthorityNameDomain_019e40b4-457c-7934-b3b3-9ae76fb51914_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncomeTaxAuthorityNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_IncomeTaxAuthorityNameAxis_019e40b4-457c-7934-b3b3-9ae76fb51914" xlink:to="loc_us-gaap_IncomeTaxAuthorityNameDomain_019e40b4-457c-7934-b3b3-9ae76fb51914_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxAuthorityNameDomain_019e40b4-457c-71ed-8be5-bbf47af309f8" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncomeTaxAuthorityNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_IncomeTaxAuthorityNameAxis_019e40b4-457c-7934-b3b3-9ae76fb51914" xlink:to="loc_us-gaap_IncomeTaxAuthorityNameDomain_019e40b4-457c-71ed-8be5-bbf47af309f8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ne_SwitzerlandAndNigeriaMember_019f8777-b802-7e30-bdc9-535ec742282f" xlink:href="ne-20260630.xsd#ne_SwitzerlandAndNigeriaMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeTaxAuthorityNameDomain_019e40b4-457c-71ed-8be5-bbf47af309f8" xlink:to="loc_ne_SwitzerlandAndNigeriaMember_019f8777-b802-7e30-bdc9-535ec742282f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ne_LuxembourgSwitzerlandAndNigeriaMember_019f8778-7ad3-7567-ac02-9c514a02eadd" xlink:href="ne-20260630.xsd#ne_LuxembourgSwitzerlandAndNigeriaMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeTaxAuthorityNameDomain_019e40b4-457c-71ed-8be5-bbf47af309f8" xlink:to="loc_ne_LuxembourgSwitzerlandAndNigeriaMember_019f8778-7ad3-7567-ac02-9c514a02eadd" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ne_LuxembourgMember_019ed5e1-0f3b-7b41-8fd9-392c317cb887" xlink:href="ne-20260630.xsd#ne_LuxembourgMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeTaxAuthorityNameDomain_019e40b4-457c-71ed-8be5-bbf47af309f8" xlink:to="loc_ne_LuxembourgMember_019ed5e1-0f3b-7b41-8fd9-392c317cb887" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ne_LuxembourgSwitzerlandAndUnitedStatesMember_019e40b4-457c-7cfa-9759-1fe6106c9ba1" xlink:href="ne-20260630.xsd#ne_LuxembourgSwitzerlandAndUnitedStatesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeTaxAuthorityNameDomain_019e40b4-457c-71ed-8be5-bbf47af309f8" xlink:to="loc_ne_LuxembourgSwitzerlandAndUnitedStatesMember_019e40b4-457c-7cfa-9759-1fe6106c9ba1" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupClassificationAxis_019e40b4-457c-75e8-9861-07bedf5f11af" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DisposalGroupClassificationAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_EffectiveIncomeTaxRateReconciliationTable_019e40b4-457c-74ae-b7db-aba45a2cbc00" xlink:to="loc_us-gaap_DisposalGroupClassificationAxis_019e40b4-457c-75e8-9861-07bedf5f11af" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupClassificationDomain_019e40b4-457c-75e8-9861-07bedf5f11af_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DisposalGroupClassificationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DisposalGroupClassificationAxis_019e40b4-457c-75e8-9861-07bedf5f11af" xlink:to="loc_us-gaap_DisposalGroupClassificationDomain_019e40b4-457c-75e8-9861-07bedf5f11af_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupClassificationDomain_019e40b4-457c-77c0-a3b7-f5f4c00a1110" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DisposalGroupClassificationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DisposalGroupClassificationAxis_019e40b4-457c-75e8-9861-07bedf5f11af" xlink:to="loc_us-gaap_DisposalGroupClassificationDomain_019e40b4-457c-77c0-a3b7-f5f4c00a1110" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupDisposedOfBySaleNotDiscontinuedOperationsMember_019e40b4-457c-7bad-8925-6eca0c654078" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DisposalGroupDisposedOfBySaleNotDiscontinuedOperationsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupClassificationDomain_019e40b4-457c-77c0-a3b7-f5f4c00a1110" xlink:to="loc_us-gaap_DisposalGroupDisposedOfBySaleNotDiscontinuedOperationsMember_019e40b4-457c-7bad-8925-6eca0c654078" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredForeignIncomeTaxExpenseBenefit_019e40b4-457c-7786-95af-f8057ba57fe6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DeferredForeignIncomeTaxExpenseBenefit"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EffectiveIncomeTaxRateReconciliationLineItems_019e40b4-457c-7908-a3fc-bd51cb160040" xlink:to="loc_us-gaap_DeferredForeignIncomeTaxExpenseBenefit_019e40b4-457c-7786-95af-f8057ba57fe6" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ne_ReservesForUncertainTaxPositions_019e40b4-457c-77fa-86b1-9a0d4be7204c" xlink:href="ne-20260630.xsd#ne_ReservesForUncertainTaxPositions"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EffectiveIncomeTaxRateReconciliationLineItems_019e40b4-457c-7908-a3fc-bd51cb160040" xlink:to="loc_ne_ReservesForUncertainTaxPositions_019e40b4-457c-77fa-86b1-9a0d4be7204c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ne_UnrecognizedTaxBenefitsRelatedTaxBenefits_019e40b4-457c-70bb-93d1-35dd30541bc4" xlink:href="ne-20260630.xsd#ne_UnrecognizedTaxBenefitsRelatedTaxBenefits"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EffectiveIncomeTaxRateReconciliationLineItems_019e40b4-457c-7908-a3fc-bd51cb160040" xlink:to="loc_ne_UnrecognizedTaxBenefitsRelatedTaxBenefits_019e40b4-457c-70bb-93d1-35dd30541bc4" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ne_TaxExpensesBenefitsRelatedToVariousRecurringItems_019e40b4-457c-721b-b1bf-12c05ca26451" xlink:href="ne-20260630.xsd#ne_TaxExpensesBenefitsRelatedToVariousRecurringItems"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EffectiveIncomeTaxRateReconciliationLineItems_019e40b4-457c-7908-a3fc-bd51cb160040" xlink:to="loc_ne_TaxExpensesBenefitsRelatedToVariousRecurringItems_019e40b4-457c-721b-b1bf-12c05ca26451" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxReconciliationDispositionOfAssets_019e40b4-457c-74b9-933d-716007afe19a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncomeTaxReconciliationDispositionOfAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EffectiveIncomeTaxRateReconciliationLineItems_019e40b4-457c-7908-a3fc-bd51cb160040" xlink:to="loc_us-gaap_IncomeTaxReconciliationDispositionOfAssets_019e40b4-457c-74b9-933d-716007afe19a" xlink:type="arc" order="4"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.noblecorp.com/role/CommitmentsandContingenciesDetails" xlink:type="simple" xlink:href="ne-20260630.xsd#CommitmentsandContingenciesDetails"/>
  <link:definitionLink xlink:role="http://www.noblecorp.com/role/CommitmentsandContingenciesDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherCommitmentsLineItems_019e40b4-457c-76c8-aafa-0f840ab3d42c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherCommitmentsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherCommitmentsTable_019e40b4-457c-7548-8658-68b29725efad" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherCommitmentsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_OtherCommitmentsLineItems_019e40b4-457c-76c8-aafa-0f840ab3d42c" xlink:to="loc_us-gaap_OtherCommitmentsTable_019e40b4-457c-7548-8658-68b29725efad" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxAuthorityAxis_019e40b4-457c-71b8-9ee7-7d82c82e9160" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncomeTaxAuthorityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_OtherCommitmentsTable_019e40b4-457c-7548-8658-68b29725efad" xlink:to="loc_us-gaap_IncomeTaxAuthorityAxis_019e40b4-457c-71b8-9ee7-7d82c82e9160" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxAuthorityDomain_019e40b4-457c-71b8-9ee7-7d82c82e9160_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncomeTaxAuthorityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_IncomeTaxAuthorityAxis_019e40b4-457c-71b8-9ee7-7d82c82e9160" xlink:to="loc_us-gaap_IncomeTaxAuthorityDomain_019e40b4-457c-71b8-9ee7-7d82c82e9160_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxAuthorityDomain_019e40b4-457c-7a84-aa8c-8ae01bcff42b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncomeTaxAuthorityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_IncomeTaxAuthorityAxis_019e40b4-457c-71b8-9ee7-7d82c82e9160" xlink:to="loc_us-gaap_IncomeTaxAuthorityDomain_019e40b4-457c-7a84-aa8c-8ae01bcff42b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ForeignCountryMember_019e40b4-457c-7192-aaa0-9a10bf22d657" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ForeignCountryMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeTaxAuthorityDomain_019e40b4-457c-7a84-aa8c-8ae01bcff42b" xlink:to="loc_us-gaap_ForeignCountryMember_019e40b4-457c-7192-aaa0-9a10bf22d657" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherCommitmentsAxis_019e40b4-457c-7122-877e-72e3fa2b4a71" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherCommitmentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_OtherCommitmentsTable_019e40b4-457c-7548-8658-68b29725efad" xlink:to="loc_us-gaap_OtherCommitmentsAxis_019e40b4-457c-7122-877e-72e3fa2b4a71" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherCommitmentsDomain_019e40b4-457c-7122-877e-72e3fa2b4a71_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherCommitmentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_OtherCommitmentsAxis_019e40b4-457c-7122-877e-72e3fa2b4a71" xlink:to="loc_us-gaap_OtherCommitmentsDomain_019e40b4-457c-7122-877e-72e3fa2b4a71_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherCommitmentsDomain_019e40b4-457c-7aeb-9f6d-e7d69463db8d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherCommitmentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_OtherCommitmentsAxis_019e40b4-457c-7122-877e-72e3fa2b4a71" xlink:to="loc_us-gaap_OtherCommitmentsDomain_019e40b4-457c-7aeb-9f6d-e7d69463db8d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ne_CustomsAndOtherBusinessTaxesMember_019e40b4-457c-7a57-a3fc-3be60674d8ed" xlink:href="ne-20260630.xsd#ne_CustomsAndOtherBusinessTaxesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherCommitmentsDomain_019e40b4-457c-7aeb-9f6d-e7d69463db8d" xlink:to="loc_ne_CustomsAndOtherBusinessTaxesMember_019e40b4-457c-7a57-a3fc-3be60674d8ed" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_019e40b4-457c-72e5-9bbe-45f7bab99d8a" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_RangeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_OtherCommitmentsTable_019e40b4-457c-7548-8658-68b29725efad" xlink:to="loc_srt_RangeAxis_019e40b4-457c-72e5-9bbe-45f7bab99d8a" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_019e40b4-457c-72e5-9bbe-45f7bab99d8a_default" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_019e40b4-457c-72e5-9bbe-45f7bab99d8a" xlink:to="loc_srt_RangeMember_019e40b4-457c-72e5-9bbe-45f7bab99d8a_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_019e40b4-457c-765b-90f6-d6d37a86aca1" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_019e40b4-457c-72e5-9bbe-45f7bab99d8a" xlink:to="loc_srt_RangeMember_019e40b4-457c-765b-90f6-d6d37a86aca1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember_019e40b4-457c-7da5-850d-3bc20e8da709" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_MinimumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_019e40b4-457c-765b-90f6-d6d37a86aca1" xlink:to="loc_srt_MinimumMember_019e40b4-457c-7da5-850d-3bc20e8da709" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityAxis_019e40b4-457c-7ce4-ab41-97f6c6aac50c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CreditFacilityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_OtherCommitmentsTable_019e40b4-457c-7548-8658-68b29725efad" xlink:to="loc_us-gaap_CreditFacilityAxis_019e40b4-457c-7ce4-ab41-97f6c6aac50c" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityDomain_019e40b4-457c-7ce4-ab41-97f6c6aac50c_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CreditFacilityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_CreditFacilityAxis_019e40b4-457c-7ce4-ab41-97f6c6aac50c" xlink:to="loc_us-gaap_CreditFacilityDomain_019e40b4-457c-7ce4-ab41-97f6c6aac50c_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityDomain_019e40b4-457c-740a-ab65-d6b0573c7cfc" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CreditFacilityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_CreditFacilityAxis_019e40b4-457c-7ce4-ab41-97f6c6aac50c" xlink:to="loc_us-gaap_CreditFacilityDomain_019e40b4-457c-740a-ab65-d6b0573c7cfc" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevolvingCreditFacilityMember_019e40b4-457c-745b-bf2c-e62f897a11bb" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RevolvingCreditFacilityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CreditFacilityDomain_019e40b4-457c-740a-ab65-d6b0573c7cfc" xlink:to="loc_us-gaap_RevolvingCreditFacilityMember_019e40b4-457c-745b-bf2c-e62f897a11bb" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentAxis_019e40b4-457c-7f4b-be80-cef89c171da4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_OtherCommitmentsTable_019e40b4-457c-7548-8658-68b29725efad" xlink:to="loc_us-gaap_DebtInstrumentAxis_019e40b4-457c-7f4b-be80-cef89c171da4" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_019e40b4-457c-7f4b-be80-cef89c171da4_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DebtInstrumentAxis_019e40b4-457c-7f4b-be80-cef89c171da4" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_019e40b4-457c-7f4b-be80-cef89c171da4_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_019e40b4-457c-78e2-ac15-aca1bfe80055" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DebtInstrumentAxis_019e40b4-457c-7f4b-be80-cef89c171da4" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_019e40b4-457c-78e2-ac15-aca1bfe80055" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ne_A2023RevolvingCreditAgreementMember_019e40b4-457c-76df-a671-f2c3bc3b1175" xlink:href="ne-20260630.xsd#ne_A2023RevolvingCreditAgreementMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_019e40b4-457c-78e2-ac15-aca1bfe80055" xlink:to="loc_ne_A2023RevolvingCreditAgreementMember_019e40b4-457c-76df-a671-f2c3bc3b1175" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_019e40b4-457c-741c-8724-fcdcf5ffd19e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongtermDebtTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_OtherCommitmentsTable_019e40b4-457c-7548-8658-68b29725efad" xlink:to="loc_us-gaap_LongtermDebtTypeAxis_019e40b4-457c-741c-8724-fcdcf5ffd19e" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_019e40b4-457c-741c-8724-fcdcf5ffd19e_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_019e40b4-457c-741c-8724-fcdcf5ffd19e" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_019e40b4-457c-741c-8724-fcdcf5ffd19e_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_019e40b4-457c-77f4-a40e-54b13d77595c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_019e40b4-457c-741c-8724-fcdcf5ffd19e" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_019e40b4-457c-77f4-a40e-54b13d77595c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UnsecuredDebtMember_019e40b4-457c-7396-818f-1709caa9decb" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_UnsecuredDebtMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_019e40b4-457c-77f4-a40e-54b13d77595c" xlink:to="loc_us-gaap_UnsecuredDebtMember_019e40b4-457c-7396-818f-1709caa9decb" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxExaminationEstimateOfPossibleLoss_019e40b4-457c-79b6-9ab2-7844ed0c6153" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncomeTaxExaminationEstimateOfPossibleLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherCommitmentsLineItems_019e40b4-457c-76c8-aafa-0f840ab3d42c" xlink:to="loc_us-gaap_IncomeTaxExaminationEstimateOfPossibleLoss_019e40b4-457c-79b6-9ab2-7844ed0c6153" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ne_PercentageOfUncertainTaxPositionsLikelihoodOfBeingSustained_019e40b4-457c-79f2-9bf3-15716552e189" xlink:href="ne-20260630.xsd#ne_PercentageOfUncertainTaxPositionsLikelihoodOfBeingSustained"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherCommitmentsLineItems_019e40b4-457c-76c8-aafa-0f840ab3d42c" xlink:to="loc_ne_PercentageOfUncertainTaxPositionsLikelihoodOfBeingSustained_019e40b4-457c-79f2-9bf3-15716552e189" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LettersOfCreditOutstandingAmount_019e40b4-457c-7f03-a499-6b50fc894239" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LettersOfCreditOutstandingAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherCommitmentsLineItems_019e40b4-457c-76c8-aafa-0f840ab3d42c" xlink:to="loc_us-gaap_LettersOfCreditOutstandingAmount_019e40b4-457c-7f03-a499-6b50fc894239" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.noblecorp.com/role/SupplementalFinancialInformationAdditionalInformationDetails" xlink:type="simple" xlink:href="ne-20260630.xsd#SupplementalFinancialInformationAdditionalInformationDetails"/>
  <link:definitionLink xlink:role="http://www.noblecorp.com/role/SupplementalFinancialInformationAdditionalInformationDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_ne_SupplementalFinancialInformationLineItems_019e40b4-457d-7a56-8d7c-97d43d68124d" xlink:href="ne-20260630.xsd#ne_SupplementalFinancialInformationLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_ne_SupplementalFinancialInformationTable_019e40b4-457c-7cbd-aa78-a63d4801b33e" xlink:href="ne-20260630.xsd#ne_SupplementalFinancialInformationTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_ne_SupplementalFinancialInformationLineItems_019e40b4-457d-7a56-8d7c-97d43d68124d" xlink:to="loc_ne_SupplementalFinancialInformationTable_019e40b4-457c-7cbd-aa78-a63d4801b33e" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_CounterpartyNameAxis_019e40b4-457c-74ee-8fc0-bc69af66745a" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_CounterpartyNameAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ne_SupplementalFinancialInformationTable_019e40b4-457c-7cbd-aa78-a63d4801b33e" xlink:to="loc_srt_CounterpartyNameAxis_019e40b4-457c-74ee-8fc0-bc69af66745a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RepurchaseAgreementCounterpartyNameDomain_019e40b4-457c-74ee-8fc0-bc69af66745a_default" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_RepurchaseAgreementCounterpartyNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_CounterpartyNameAxis_019e40b4-457c-74ee-8fc0-bc69af66745a" xlink:to="loc_srt_RepurchaseAgreementCounterpartyNameDomain_019e40b4-457c-74ee-8fc0-bc69af66745a_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RepurchaseAgreementCounterpartyNameDomain_019e40b4-457c-7a29-a86a-3e53fa8b8dc1" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_RepurchaseAgreementCounterpartyNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_CounterpartyNameAxis_019e40b4-457c-74ee-8fc0-bc69af66745a" xlink:to="loc_srt_RepurchaseAgreementCounterpartyNameDomain_019e40b4-457c-7a29-a86a-3e53fa8b8dc1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ne_EFSBOPLLCMember_019e40b4-457c-722b-a257-e0eda6e46ac7" xlink:href="ne-20260630.xsd#ne_EFSBOPLLCMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RepurchaseAgreementCounterpartyNameDomain_019e40b4-457c-7a29-a86a-3e53fa8b8dc1" xlink:to="loc_ne_EFSBOPLLCMember_019e40b4-457c-722b-a257-e0eda6e46ac7" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ne_BorrDrillingLimitedBorrMember_019e40b4-457c-7c0e-a517-866f17b61f0d" xlink:href="ne-20260630.xsd#ne_BorrDrillingLimitedBorrMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RepurchaseAgreementCounterpartyNameDomain_019e40b4-457c-7a29-a86a-3e53fa8b8dc1" xlink:to="loc_ne_BorrDrillingLimitedBorrMember_019e40b4-457c-7c0e-a517-866f17b61f0d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupClassificationAxis_019e40b4-457c-78b9-8513-3f9c4f6602b2" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DisposalGroupClassificationAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ne_SupplementalFinancialInformationTable_019e40b4-457c-7cbd-aa78-a63d4801b33e" xlink:to="loc_us-gaap_DisposalGroupClassificationAxis_019e40b4-457c-78b9-8513-3f9c4f6602b2" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupClassificationDomain_019e40b4-457c-78b9-8513-3f9c4f6602b2_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DisposalGroupClassificationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DisposalGroupClassificationAxis_019e40b4-457c-78b9-8513-3f9c4f6602b2" xlink:to="loc_us-gaap_DisposalGroupClassificationDomain_019e40b4-457c-78b9-8513-3f9c4f6602b2_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupClassificationDomain_019e40b4-457c-7121-9e6c-16c0d09c3a18" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DisposalGroupClassificationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DisposalGroupClassificationAxis_019e40b4-457c-78b9-8513-3f9c4f6602b2" xlink:to="loc_us-gaap_DisposalGroupClassificationDomain_019e40b4-457c-7121-9e6c-16c0d09c3a18" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupHeldforsaleNotDiscontinuedOperationsMember_019e40b4-457d-786e-b0df-942b4673ca25" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DisposalGroupHeldforsaleNotDiscontinuedOperationsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupClassificationDomain_019e40b4-457c-7121-9e6c-16c0d09c3a18" xlink:to="loc_us-gaap_DisposalGroupHeldforsaleNotDiscontinuedOperationsMember_019e40b4-457d-786e-b0df-942b4673ca25" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_019e40b4-457d-764e-a769-0c88d24bde05" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PropertyPlantAndEquipmentByTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ne_SupplementalFinancialInformationTable_019e40b4-457c-7cbd-aa78-a63d4801b33e" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_019e40b4-457d-764e-a769-0c88d24bde05" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_019e40b4-457d-764e-a769-0c88d24bde05_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PropertyPlantAndEquipmentTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_019e40b4-457d-764e-a769-0c88d24bde05" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_019e40b4-457d-764e-a769-0c88d24bde05_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_019e40b4-457d-7ffc-9162-9b5b54937577" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PropertyPlantAndEquipmentTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_019e40b4-457d-764e-a769-0c88d24bde05" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_019e40b4-457d-7ffc-9162-9b5b54937577" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ne_BlowoutPreventerBOPSystemsMember_019e40b4-457d-73b5-be3f-b7718bf1385d" xlink:href="ne-20260630.xsd#ne_BlowoutPreventerBOPSystemsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_019e40b4-457d-7ffc-9162-9b5b54937577" xlink:to="loc_ne_BlowoutPreventerBOPSystemsMember_019e40b4-457d-73b5-be3f-b7718bf1385d" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ne_FiveRigsMember_019e40b4-457d-76fc-ac4c-f8b4bcbb4ee1" xlink:href="ne-20260630.xsd#ne_FiveRigsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_019e40b4-457d-7ffc-9162-9b5b54937577" xlink:to="loc_ne_FiveRigsMember_019e40b4-457d-76fc-ac4c-f8b4bcbb4ee1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_019e40b4-457d-7f80-9901-4f6b3889ce15" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_RangeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ne_SupplementalFinancialInformationTable_019e40b4-457c-7cbd-aa78-a63d4801b33e" xlink:to="loc_srt_RangeAxis_019e40b4-457d-7f80-9901-4f6b3889ce15" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_019e40b4-457d-7f80-9901-4f6b3889ce15_default" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_019e40b4-457d-7f80-9901-4f6b3889ce15" xlink:to="loc_srt_RangeMember_019e40b4-457d-7f80-9901-4f6b3889ce15_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_019e40b4-457d-76f2-a4ea-8a15755984d8" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_019e40b4-457d-7f80-9901-4f6b3889ce15" xlink:to="loc_srt_RangeMember_019e40b4-457d-76f2-a4ea-8a15755984d8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember_019e40b4-457d-75e4-858e-7ebb6826a158" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_MinimumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_019e40b4-457d-76f2-a4ea-8a15755984d8" xlink:to="loc_srt_MinimumMember_019e40b4-457d-75e4-858e-7ebb6826a158" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_019e40b4-457d-763a-8b3a-f443bbf68181" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_MaximumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_019e40b4-457d-76f2-a4ea-8a15755984d8" xlink:to="loc_srt_MaximumMember_019e40b4-457d-763a-8b3a-f443bbf68181" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestrictedCash_019e40b4-457d-7715-851d-d3ed190087e6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestrictedCash"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ne_SupplementalFinancialInformationLineItems_019e40b4-457d-7a56-8d7c-97d43d68124d" xlink:to="loc_us-gaap_RestrictedCash_019e40b4-457d-7715-851d-d3ed190087e6" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ne_NumberOfProductiveAssetsAcquired_019e40b4-457d-750e-86ba-02e5a5106803" xlink:href="ne-20260630.xsd#ne_NumberOfProductiveAssetsAcquired"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ne_SupplementalFinancialInformationLineItems_019e40b4-457d-7a56-8d7c-97d43d68124d" xlink:to="loc_ne_NumberOfProductiveAssetsAcquired_019e40b4-457d-750e-86ba-02e5a5106803" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsToAcquireProductiveAssets_019e40b4-457d-7930-b21e-5e7e21e62890" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PaymentsToAcquireProductiveAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ne_SupplementalFinancialInformationLineItems_019e40b4-457d-7a56-8d7c-97d43d68124d" xlink:to="loc_us-gaap_PaymentsToAcquireProductiveAssets_019e40b4-457d-7930-b21e-5e7e21e62890" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ne_DisposalGroupIncludingDiscontinuedOperationNumberOfDisposals_019e40b4-457d-78fc-a11c-546d9c458767" xlink:href="ne-20260630.xsd#ne_DisposalGroupIncludingDiscontinuedOperationNumberOfDisposals"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ne_SupplementalFinancialInformationLineItems_019e40b4-457d-7a56-8d7c-97d43d68124d" xlink:to="loc_ne_DisposalGroupIncludingDiscontinuedOperationNumberOfDisposals_019e40b4-457d-78fc-a11c-546d9c458767" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationConsideration_019e40b4-457d-7263-bebc-6f54bd81cf77" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DisposalGroupIncludingDiscontinuedOperationConsideration"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ne_SupplementalFinancialInformationLineItems_019e40b4-457d-7a56-8d7c-97d43d68124d" xlink:to="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationConsideration_019e40b4-457d-7263-bebc-6f54bd81cf77" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationAccountsNotesAndLoansReceivableNet_019e40b4-457d-7647-96e4-29995a53fbbf" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DisposalGroupIncludingDiscontinuedOperationAccountsNotesAndLoansReceivableNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ne_SupplementalFinancialInformationLineItems_019e40b4-457d-7a56-8d7c-97d43d68124d" xlink:to="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationAccountsNotesAndLoansReceivableNet_019e40b4-457d-7647-96e4-29995a53fbbf" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_ne_DisposalGroupIncludingDiscontinuedOperationPercentageOfInterestRateOnNotesPayable_019e40b4-457d-7afa-aa4c-f35b9febf113" xlink:href="ne-20260630.xsd#ne_DisposalGroupIncludingDiscontinuedOperationPercentageOfInterestRateOnNotesPayable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ne_SupplementalFinancialInformationLineItems_019e40b4-457d-7a56-8d7c-97d43d68124d" xlink:to="loc_ne_DisposalGroupIncludingDiscontinuedOperationPercentageOfInterestRateOnNotesPayable_019e40b4-457d-7afa-aa4c-f35b9febf113" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherAssetsNoncurrent_019e40b4-457d-775b-9618-c48fcae2042e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherAssetsNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ne_SupplementalFinancialInformationLineItems_019e40b4-457d-7a56-8d7c-97d43d68124d" xlink:to="loc_us-gaap_OtherAssetsNoncurrent_019e40b4-457d-775b-9618-c48fcae2042e" xlink:type="arc" order="7"/>
  </link:definitionLink>
</link:linkbase>
