SEC Info - Chevron Corp - ‘10-K’ for 12/31/18

SEC Info℠

Home

Help

Please Sign In

Chevron Corp – ‘10-K’ for 12/31/18 – ‘EX-101.DEF’

On: Friday, 2/22/19, at 11:25am ET · For: 12/31/18 · Accession #: 93410-19-8 · File #: 1-00368

  As Of               Filer                 Filing    For·On·As Docs:Size

 2/22/19  Chevron Corp                      10-K       12/31/18  132:27M

Annual Report — Form 10-K — Sect. 13 / 15(d) – SEA’34
Filing Table of Contents

Document/Exhibit                   Description                      Pages   Size 

 1: 10-K        Annual Report                                       HTML   2.28M 
 2: EX-10.7     Material Contract                                   HTML     38K 
 3: EX-21.1     Subsidiaries List                                   HTML     42K 
 4: EX-23.1     Consent of Experts or Counsel                       HTML     38K 
 5: EX-24.1     Power of Attorney                                   HTML     44K 
10: EX-99.1     Miscellaneous Exhibit                               HTML     43K 
 6: EX-31.1     Certification -- §302 - SOA'02                      HTML     43K 
 7: EX-31.2     Certification -- §302 - SOA'02                      HTML     43K 
 8: EX-32.1     Certification -- §906 - SOA'02                      HTML     37K 
 9: EX-32.2     Certification -- §906 - SOA'02                      HTML     37K 
17: R1          Document and Entity Information                     HTML     69K 
18: R2          Consolidated Statement of Income                    HTML    108K 
19: R3          Consolidated Statement of Income (Parenthetical)    HTML     37K 
20: R4          Consolidated Statement of Comprehensive Income      HTML     93K 
21: R5          Consolidated Balance Sheet                          HTML    162K 
22: R6          Consolidated Balance Sheet (Parenthetical)          HTML     58K 
23: R7          Consolidated Statement of Cash Flows                HTML    122K 
24: R8          Consolidated Statement of Equity                    HTML    103K 
25: R9          Consolidated Statement of Equity (Parenthetical)    HTML     40K 
26: R10         Summary of Significant Accounting Policies          HTML     64K 
27: R11         Changes in Accumulated Other Comprehensive Losses   HTML    105K 
28: R12         Information Relating to the Consolidated Statement  HTML    172K 
                of Cash Flows                                                    
29: R13         New Accounting Standards                            HTML     50K 
30: R14         Lease Commitments                                   HTML     90K 
31: R15         Summarized Financial Data - Chevron U.S.A. Inc.     HTML     60K 
32: R16         Summarized Financial Data - Tengizchevroil LLP      HTML     59K 
33: R17         Fair Value Measurements                             HTML    108K 
34: R18         Financial and Derivative Instruments                HTML    105K 
35: R19         Assets Held For Sale                                HTML     37K 
36: R20         Equity                                              HTML     39K 
37: R21         Earnings Per Share                                  HTML     75K 
38: R22         Operating Segments and Geographic Data              HTML    210K 
39: R23         Investments and Advances                            HTML    164K 
40: R24         Litigation                                          HTML     69K 
41: R25         Taxes                                               HTML    221K 
42: R26         Properties, Plant and Equipment                     HTML    142K 
43: R27         Short-Term Debt                                     HTML     63K 
44: R28         Long-Term Debt                                      HTML    105K 
45: R29         Accounting for Suspended Exploratory Wells          HTML     85K 
46: R30         Stock Options and Other Share-Based Compensation    HTML     88K 
47: R31         Employee Benefit Plans                              HTML    700K 
48: R32         Other Contingencies and Commitments                 HTML     56K 
49: R33         Asset Retirement Obligations                        HTML     57K 
50: R34         Revenue                                             HTML     44K 
51: R35         Other Financial Information                         HTML     65K 
52: R36         Schedule II - Valuation and Qualifying Accounts     HTML     64K 
53: R37         Summary of Significant Accounting Policies          HTML    146K 
                (Policies)                                                       
54: R38         Changes in Accumulated Other Comprehensive Losses   HTML    104K 
                (Tables)                                                         
55: R39         Information Relating to the Consolidated Statement  HTML    166K 
                of Cash Flows (Tables)                                           
56: R40         Lease Commitments (Tables)                          HTML     93K 
57: R41         Summarized Financial Data - Chevron U.S.A. Inc.     HTML     61K 
                (Tables)                                                         
58: R42         Summarized Financial Data - Tengizchevroil LLP      HTML     60K 
                (Tables)                                                         
59: R43         Fair Value Measurements (Tables)                    HTML    102K 
60: R44         Financial and Derivative Instruments (Tables)       HTML    137K 
61: R45         Earnings Per Share (Tables)                         HTML     74K 
62: R46         Operating Segments and Geographic Data (Tables)     HTML    211K 
63: R47         Investments and Advances (Tables)                   HTML    154K 
64: R48         Taxes (Tables)                                      HTML    220K 
65: R49         Properties, Plant and Equipment (Tables)            HTML    142K 
66: R50         Short-Term Debt (Tables)                            HTML     59K 
67: R51         Long-Term Debt (Tables)                             HTML    107K 
68: R52         Accounting for Suspended Exploratory Wells          HTML     84K 
                (Tables)                                                         
69: R53         Stock Options and Other Share-Based Compensation    HTML     76K 
                (Tables)                                                         
70: R54         Employee Benefit Plans (Tables)                     HTML    695K 
71: R55         Asset Retirement Obligations (Tables)               HTML     54K 
72: R56         Other Financial Information (Tables)                HTML     62K 
73: R57         Summary of Significant Accounting Policies          HTML     44K 
                (Details)                                                        
74: R58         Changes in Accumulated Other Comprehensive Losses   HTML     87K 
                - Summary of Changed (Details)                                   
75: R59         Information Relating to the Consolidated Statement  HTML    135K 
                of Cash Flows - Summary of Information (Details)                 
76: R60         Information Relating to the Consolidated Statement  HTML     57K 
                of Cash Flows - Narrative (Details)                              
77: R61         Information Relating to the Consolidated Statement  HTML     50K 
                of Cash Flows - Cash Balances (Details)                          
78: R62         New Accounting Standards (Details)                  HTML     55K 
79: R63         Lease Commitments (Details)                         HTML    135K 
80: R64         Summarized Financial Data - Chevron U.S.A. Inc. -   HTML     54K 
                Summary of Income Statement Information (Details)                
81: R65         Summarized Financial Data - Chevron U.S.A. Inc. -   HTML     55K 
                Summary of Balance Sheet Information (Details)                   
82: R66         Summarized Financial Data - Tengizchevroil LLP -    HTML     54K 
                Summary of Income Statement Information (Details)                
83: R67         Summarized Financial Data - Tengizchevroil LLP -    HTML     58K 
                Summary of Balance Sheet Information (Details)                   
84: R68         Fair Value Measurements - Summary of Assets and     HTML     63K 
                Liabiliites Measured on a Recurring Basis                        
                (Details)                                                        
85: R69         Fair Value Measurements - Summary of Assets and     HTML     64K 
                Liabilities Measured On a Non-Recurring Basis                    
                (Details)                                                        
86: R70         Fair Value Measurements - Narrative (Details)       HTML     66K 
87: R71         Financial and Derivative Instruments - Fair Value   HTML     50K 
                of Derivatives Not Designated as Hedging                         
                Instruments (Details)                                            
88: R72         Financial and Derivative Instruments Financial and  HTML     46K 
                Derivative Instruments - Effect of Derivatives Not               
                Designated On Hedging Instruments (Details)                      
89: R73         Financial and Derivative Instruments Financial and  HTML     74K 
                Derivative Instruments - Effect of Netting                       
                Derivative Assets and Liabilities (Details)                      
90: R74         Assets Held For Sale (Details)                      HTML     42K 
91: R75         Equity (Details)                                    HTML     45K 
92: R76         Earnings Per Share (Details)                        HTML     75K 
93: R77         Operating Segments and Geographic Data - Narrative  HTML     38K 
                (Details)                                                        
94: R78         Operating Segments and Geographic Data - Segment    HTML     64K 
                Earnings (Details)                                               
95: R79         Operating Segments and Geographic Data - Segment    HTML     60K 
                Assets (Details)                                                 
96: R80         Operating Segments and Geographic Data - Segment    HTML    102K 
                Sales and Operating Revenues (Details)                           
97: R81         Operating Segments and Geographic Data - Segement   HTML     53K 
                Income Taxes (Details)                                           
98: R82         Investments and Advances - Summary of Investment    HTML     90K 
                and Advances and Equity in Earnings (Details)                    
99: R83         Investments and Advances - Narrative (Details)      HTML     92K 
100: R84         Investments and Advances - Summary of Financial     HTML     73K  
                Information of All Equity Affiliates (Details)                   
101: R85         Litigation (Details)                                HTML     60K  
102: R86         Taxes - Summary of Components of Income Tax         HTML     65K  
                (Details)                                                        
103: R87         Taxes - Effective Income Tax Reconcilliation and    HTML    132K  
                Summary of Deferred Tax Assets and Liabilities                   
                (Details)                                                        
104: R88         Taxes - Narrative (Details)                         HTML     75K  
105: R89         Taxes - Sumamry of Unrecognized Income Tax          HTML     81K  
                Benefits and Taxes Other Than on Income (Details                 
                2)                                                               
106: R90         Properties, Plant and Equipment (Details)           HTML     86K  
107: R91         Short-Term Debt - Sumamry (Details)                 HTML     62K  
108: R92         Short-Term Debt - Narrative (Details)               HTML     48K  
109: R93         Long-Term Debt (Details)                            HTML    164K  
110: R94         Accounting for Suspended Exploratory Wells -        HTML     59K  
                Summary of Changes and Aging of Capitalized Well                 
                Costs (Details)                                                  
111: R95         Accounting for Suspended Exploratory Wells -        HTML     67K  
                Narrative (Details)                                              
112: R96         Accounting for Suspended Exploratory Wells - Aging  HTML     61K  
                of Costs on a Well and Project Basis (Details)                   
113: R97         Stock Options and Other Share-Based Compensation -  HTML    105K  
                Narrative (Details)                                              
114: R98         Stock Options and Other Share-Based Compensation -  HTML     92K  
                Summary of Valuation Assumptions and Activity                    
                (Details)                                                        
115: R99         Employee Benefit Plans - Narrative (Details)        HTML    170K  
116: R100        Employee Benefit Plans - Summary of Change in       HTML    112K  
                Benefit Obligation and Plan Assets (Details)                     
117: R101        Employee Benefit Plans - Sumamry of Balance Sheet   HTML     60K  
                Components (Details)                                             
118: R102        Employee Benefit Plans - Amounts Recognized in      HTML     53K  
                Accumulated Other Comprehensive Loss (Details)                   
119: R103        Employee Benefit Plans - Accumulated Benefit        HTML     49K  
                Obligation in Excess of Plan Assets (Details)                    
120: R104        Employee Benefit Plans - Net Periodic Benefit Cost  HTML    103K  
                (Details)                                                        
121: R105        Employee Benefit Plans - Assumptions (Details)      HTML     79K  
122: R106        Employee Benefit Plans - Plan Assets (Details)      HTML    245K  
123: R107        Employee Benefit Plans - Summary of Change in       HTML     76K  
                Assets Measured at Level 3 (Details)                             
124: R108        Employee Benefit Plans - Execpected Benefit         HTML     58K  
                Payments (Details)                                               
125: R109        Other Contingencies and Commitments (Details)       HTML     94K  
126: R110        Asset Retirement Obligations (Details)              HTML     51K  
127: R111        Revenue (Details)                                   HTML     48K  
128: R112        Other Financial Information (Details)               HTML     71K  
129: R113        Schedule II - Valuation and Qualifying Accounts     HTML     51K  
                (Details)                                                        
131: XML         IDEA XML File -- Filing Summary                      XML    236K  
130: EXCEL       IDEA Workbook of Financial Reports                  XLSX    180K  
11: EX-101.INS  XBRL Instance -- cvx-20181231                        XML   8.51M 
13: EX-101.CAL  XBRL Calculations -- cvx-20181231_cal                XML    456K 
14: EX-101.DEF  XBRL Definitions -- cvx-20181231_def                 XML   1.27M 
15: EX-101.LAB  XBRL Labels -- cvx-20181231_lab                      XML   3.27M 
16: EX-101.PRE  XBRL Presentations -- cvx-20181231_pre               XML   1.97M 
12: EX-101.SCH  XBRL Schema -- cvx-20181231                          XSD    324K 
132: ZIP         XBRL Zipped Folder -- 0000093410-19-000008-xbrl      Zip    543K

‘EX-101.DEF’ — XBRL Definitions — cvx-20181231_def

This Exhibit is an XBRL XML File.

<?xml version="1.0" encoding="windows-1252"?>

<link:linkbase xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd" xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xbrldt="http://xbrl.org/2005/xbrldt" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">

<link:roleRef roleURI="http://www.chevron.com/role/AccountingForSuspendedExploratoryWells" xlink:href="cvx-20181231.xsd#AccountingForSuspendedExploratoryWells" xlink:type="simple"/>

<link:roleRef roleURI="http://www.chevron.com/role/AccountingForSuspendedExploratoryWellsAgingOfCostsOnWellAndProjectBasisDetails" xlink:href="cvx-20181231.xsd#AccountingForSuspendedExploratoryWellsAgingOfCostsOnWellAndProjectBasisDetails" xlink:type="simple"/>

<link:roleRef roleURI="http://www.chevron.com/role/AccountingForSuspendedExploratoryWellsNarrativeDetails" xlink:href="cvx-20181231.xsd#AccountingForSuspendedExploratoryWellsNarrativeDetails" xlink:type="simple"/>

<link:roleRef roleURI="http://www.chevron.com/role/AccountingForSuspendedExploratoryWellsSummaryOfChangesAndAgingOfCapitalizedWellCostsDetails" xlink:href="cvx-20181231.xsd#AccountingForSuspendedExploratoryWellsSummaryOfChangesAndAgingOfCapitalizedWellCostsDetails" xlink:type="simple"/>

<link:roleRef roleURI="http://www.chevron.com/role/AccountingForSuspendedExploratoryWellsTables" xlink:href="cvx-20181231.xsd#AccountingForSuspendedExploratoryWellsTables" xlink:type="simple"/>

<link:roleRef roleURI="http://www.chevron.com/role/AssetRetirementObligations" xlink:href="cvx-20181231.xsd#AssetRetirementObligations" xlink:type="simple"/>

<link:roleRef roleURI="http://www.chevron.com/role/AssetRetirementObligationsDetails" xlink:href="cvx-20181231.xsd#AssetRetirementObligationsDetails" xlink:type="simple"/>

<link:roleRef roleURI="http://www.chevron.com/role/AssetRetirementObligationsTables" xlink:href="cvx-20181231.xsd#AssetRetirementObligationsTables" xlink:type="simple"/>

<link:roleRef roleURI="http://www.chevron.com/role/AssetsHeldForSale" xlink:href="cvx-20181231.xsd#AssetsHeldForSale" xlink:type="simple"/>

<link:roleRef roleURI="http://www.chevron.com/role/AssetsHeldForSaleDetails" xlink:href="cvx-20181231.xsd#AssetsHeldForSaleDetails" xlink:type="simple"/>

<link:roleRef roleURI="http://www.chevron.com/role/ChangesInAccumulatedOtherComprehensiveLosses" xlink:href="cvx-20181231.xsd#ChangesInAccumulatedOtherComprehensiveLosses" xlink:type="simple"/>

<link:roleRef roleURI="http://www.chevron.com/role/ChangesInAccumulatedOtherComprehensiveLossesSummaryOfChangedDetails" xlink:href="cvx-20181231.xsd#ChangesInAccumulatedOtherComprehensiveLossesSummaryOfChangedDetails" xlink:type="simple"/>

<link:roleRef roleURI="http://www.chevron.com/role/ChangesInAccumulatedOtherComprehensiveLossesTables" xlink:href="cvx-20181231.xsd#ChangesInAccumulatedOtherComprehensiveLossesTables" xlink:type="simple"/>

<link:roleRef roleURI="http://www.chevron.com/role/ConsolidatedBalanceSheet" xlink:href="cvx-20181231.xsd#ConsolidatedBalanceSheet" xlink:type="simple"/>

<link:roleRef roleURI="http://www.chevron.com/role/ConsolidatedBalanceSheetParenthetical" xlink:href="cvx-20181231.xsd#ConsolidatedBalanceSheetParenthetical" xlink:type="simple"/>

<link:roleRef roleURI="http://www.chevron.com/role/ConsolidatedStatementOfCashFlows" xlink:href="cvx-20181231.xsd#ConsolidatedStatementOfCashFlows" xlink:type="simple"/>

<link:roleRef roleURI="http://www.chevron.com/role/ConsolidatedStatementOfComprehensiveIncome" xlink:href="cvx-20181231.xsd#ConsolidatedStatementOfComprehensiveIncome" xlink:type="simple"/>

<link:roleRef roleURI="http://www.chevron.com/role/ConsolidatedStatementOfEquity" xlink:href="cvx-20181231.xsd#ConsolidatedStatementOfEquity" xlink:type="simple"/>

<link:roleRef roleURI="http://www.chevron.com/role/ConsolidatedStatementOfEquityParenthetical" xlink:href="cvx-20181231.xsd#ConsolidatedStatementOfEquityParenthetical" xlink:type="simple"/>

<link:roleRef roleURI="http://www.chevron.com/role/ConsolidatedStatementOfIncome" xlink:href="cvx-20181231.xsd#ConsolidatedStatementOfIncome" xlink:type="simple"/>

<link:roleRef roleURI="http://www.chevron.com/role/ConsolidatedStatementOfIncomeParenthetical" xlink:href="cvx-20181231.xsd#ConsolidatedStatementOfIncomeParenthetical" xlink:type="simple"/>

<link:roleRef roleURI="http://www.chevron.com/role/DocumentAndEntityInformation" xlink:href="cvx-20181231.xsd#DocumentAndEntityInformation" xlink:type="simple"/>

<link:roleRef roleURI="http://www.chevron.com/role/EarningsPerShare" xlink:href="cvx-20181231.xsd#EarningsPerShare" xlink:type="simple"/>

<link:roleRef roleURI="http://www.chevron.com/role/EarningsPerShareDetails" xlink:href="cvx-20181231.xsd#EarningsPerShareDetails" xlink:type="simple"/>

<link:roleRef roleURI="http://www.chevron.com/role/EarningsPerShareTables" xlink:href="cvx-20181231.xsd#EarningsPerShareTables" xlink:type="simple"/>

<link:roleRef roleURI="http://www.chevron.com/role/EmployeeBenefitPlans" xlink:href="cvx-20181231.xsd#EmployeeBenefitPlans" xlink:type="simple"/>

<link:roleRef roleURI="http://www.chevron.com/role/EmployeeBenefitPlansAccumulatedBenefitObligationInExcessOfPlanAssetsDetails" xlink:href="cvx-20181231.xsd#EmployeeBenefitPlansAccumulatedBenefitObligationInExcessOfPlanAssetsDetails" xlink:type="simple"/>

<link:roleRef roleURI="http://www.chevron.com/role/EmployeeBenefitPlansAmountsRecognizedInAccumulatedOtherComprehensiveLossDetails" xlink:href="cvx-20181231.xsd#EmployeeBenefitPlansAmountsRecognizedInAccumulatedOtherComprehensiveLossDetails" xlink:type="simple"/>

<link:roleRef roleURI="http://www.chevron.com/role/EmployeeBenefitPlansAssumptionsDetails" xlink:href="cvx-20181231.xsd#EmployeeBenefitPlansAssumptionsDetails" xlink:type="simple"/>

<link:roleRef roleURI="http://www.chevron.com/role/EmployeeBenefitPlansExecpectedBenefitPaymentsDetails" xlink:href="cvx-20181231.xsd#EmployeeBenefitPlansExecpectedBenefitPaymentsDetails" xlink:type="simple"/>

<link:roleRef roleURI="http://www.chevron.com/role/EmployeeBenefitPlansNarrativeDetails" xlink:href="cvx-20181231.xsd#EmployeeBenefitPlansNarrativeDetails" xlink:type="simple"/>

<link:roleRef roleURI="http://www.chevron.com/role/EmployeeBenefitPlansNetPeriodicBenefitCostDetails" xlink:href="cvx-20181231.xsd#EmployeeBenefitPlansNetPeriodicBenefitCostDetails" xlink:type="simple"/>

<link:roleRef roleURI="http://www.chevron.com/role/EmployeeBenefitPlansPlanAssetsDetails" xlink:href="cvx-20181231.xsd#EmployeeBenefitPlansPlanAssetsDetails" xlink:type="simple"/>

<link:roleRef roleURI="http://www.chevron.com/role/EmployeeBenefitPlansSumamryOfBalanceSheetComponentsDetails" xlink:href="cvx-20181231.xsd#EmployeeBenefitPlansSumamryOfBalanceSheetComponentsDetails" xlink:type="simple"/>

<link:roleRef roleURI="http://www.chevron.com/role/EmployeeBenefitPlansSummaryOfChangeInAssetsMeasuredAtLevel3Details" xlink:href="cvx-20181231.xsd#EmployeeBenefitPlansSummaryOfChangeInAssetsMeasuredAtLevel3Details" xlink:type="simple"/>

<link:roleRef roleURI="http://www.chevron.com/role/EmployeeBenefitPlansSummaryOfChangeInBenefitObligationAndPlanAssetsDetails" xlink:href="cvx-20181231.xsd#EmployeeBenefitPlansSummaryOfChangeInBenefitObligationAndPlanAssetsDetails" xlink:type="simple"/>

<link:roleRef roleURI="http://www.chevron.com/role/EmployeeBenefitPlansTables" xlink:href="cvx-20181231.xsd#EmployeeBenefitPlansTables" xlink:type="simple"/>

<link:roleRef roleURI="http://www.chevron.com/role/Equity" xlink:href="cvx-20181231.xsd#Equity" xlink:type="simple"/>

<link:roleRef roleURI="http://www.chevron.com/role/EquityDetails" xlink:href="cvx-20181231.xsd#EquityDetails" xlink:type="simple"/>

<link:roleRef roleURI="http://www.chevron.com/role/FairValueMeasurements" xlink:href="cvx-20181231.xsd#FairValueMeasurements" xlink:type="simple"/>

<link:roleRef roleURI="http://www.chevron.com/role/FairValueMeasurementsNarrativeDetails" xlink:href="cvx-20181231.xsd#FairValueMeasurementsNarrativeDetails" xlink:type="simple"/>

<link:roleRef roleURI="http://www.chevron.com/role/FairValueMeasurementsSummaryOfAssetsAndLiabiliitesMeasuredOnRecurringBasisDetails" xlink:href="cvx-20181231.xsd#FairValueMeasurementsSummaryOfAssetsAndLiabiliitesMeasuredOnRecurringBasisDetails" xlink:type="simple"/>

<link:roleRef roleURI="http://www.chevron.com/role/FairValueMeasurementsSummaryOfAssetsAndLiabilitiesMeasuredOnNonRecurringBasisDetails" xlink:href="cvx-20181231.xsd#FairValueMeasurementsSummaryOfAssetsAndLiabilitiesMeasuredOnNonRecurringBasisDetails" xlink:type="simple"/>

<link:roleRef roleURI="http://www.chevron.com/role/FairValueMeasurementsTables" xlink:href="cvx-20181231.xsd#FairValueMeasurementsTables" xlink:type="simple"/>

<link:roleRef roleURI="http://www.chevron.com/role/FinancialAndDerivativeInstruments" xlink:href="cvx-20181231.xsd#FinancialAndDerivativeInstruments" xlink:type="simple"/>

<link:roleRef roleURI="http://www.chevron.com/role/FinancialAndDerivativeInstrumentsFairValueOfDerivativesNotDesignatedAsHedgingInstrumentsDetails" xlink:href="cvx-20181231.xsd#FinancialAndDerivativeInstrumentsFairValueOfDerivativesNotDesignatedAsHedgingInstrumentsDetails" xlink:type="simple"/>

<link:roleRef roleURI="http://www.chevron.com/role/FinancialAndDerivativeInstrumentsFinancialAndDerivativeInstrumentsEffectOfDerivativesNotDesignatedOnHedgingInstrumentsDetails" xlink:href="cvx-20181231.xsd#FinancialAndDerivativeInstrumentsFinancialAndDerivativeInstrumentsEffectOfDerivativesNotDesignatedOnHedgingInstrumentsDetails" xlink:type="simple"/>

<link:roleRef roleURI="http://www.chevron.com/role/FinancialAndDerivativeInstrumentsFinancialAndDerivativeInstrumentsEffectOfNettingDerivativeAssetsAndLiabilitiesDetails" xlink:href="cvx-20181231.xsd#FinancialAndDerivativeInstrumentsFinancialAndDerivativeInstrumentsEffectOfNettingDerivativeAssetsAndLiabilitiesDetails" xlink:type="simple"/>

<link:roleRef roleURI="http://www.chevron.com/role/FinancialAndDerivativeInstrumentsTables" xlink:href="cvx-20181231.xsd#FinancialAndDerivativeInstrumentsTables" xlink:type="simple"/>

<link:roleRef roleURI="http://www.chevron.com/role/InformationRelatingToConsolidatedStatementOfCashFlows" xlink:href="cvx-20181231.xsd#InformationRelatingToConsolidatedStatementOfCashFlows" xlink:type="simple"/>

<link:roleRef roleURI="http://www.chevron.com/role/InformationRelatingToConsolidatedStatementOfCashFlowsCashBalancesDetails" xlink:href="cvx-20181231.xsd#InformationRelatingToConsolidatedStatementOfCashFlowsCashBalancesDetails" xlink:type="simple"/>

<link:roleRef roleURI="http://www.chevron.com/role/InformationRelatingToConsolidatedStatementOfCashFlowsNarrativeDetails" xlink:href="cvx-20181231.xsd#InformationRelatingToConsolidatedStatementOfCashFlowsNarrativeDetails" xlink:type="simple"/>

<link:roleRef roleURI="http://www.chevron.com/role/InformationRelatingToConsolidatedStatementOfCashFlowsSummaryOfInformationDetails" xlink:href="cvx-20181231.xsd#InformationRelatingToConsolidatedStatementOfCashFlowsSummaryOfInformationDetails" xlink:type="simple"/>

<link:roleRef roleURI="http://www.chevron.com/role/InformationRelatingToConsolidatedStatementOfCashFlowsTables" xlink:href="cvx-20181231.xsd#InformationRelatingToConsolidatedStatementOfCashFlowsTables" xlink:type="simple"/>

<link:roleRef roleURI="http://www.chevron.com/role/InvestmentsAndAdvances" xlink:href="cvx-20181231.xsd#InvestmentsAndAdvances" xlink:type="simple"/>

<link:roleRef roleURI="http://www.chevron.com/role/InvestmentsAndAdvancesNarrativeDetails" xlink:href="cvx-20181231.xsd#InvestmentsAndAdvancesNarrativeDetails" xlink:type="simple"/>

<link:roleRef roleURI="http://www.chevron.com/role/InvestmentsAndAdvancesSummaryOfFinancialInformationOfAllEquityAffiliatesDetails" xlink:href="cvx-20181231.xsd#InvestmentsAndAdvancesSummaryOfFinancialInformationOfAllEquityAffiliatesDetails" xlink:type="simple"/>

<link:roleRef roleURI="http://www.chevron.com/role/InvestmentsAndAdvancesSummaryOfInvestmentAndAdvancesAndEquityInEarningsDetails" xlink:href="cvx-20181231.xsd#InvestmentsAndAdvancesSummaryOfInvestmentAndAdvancesAndEquityInEarningsDetails" xlink:type="simple"/>

<link:roleRef roleURI="http://www.chevron.com/role/InvestmentsAndAdvancesTables" xlink:href="cvx-20181231.xsd#InvestmentsAndAdvancesTables" xlink:type="simple"/>

<link:roleRef roleURI="http://www.chevron.com/role/LeaseCommitments" xlink:href="cvx-20181231.xsd#LeaseCommitments" xlink:type="simple"/>

<link:roleRef roleURI="http://www.chevron.com/role/LeaseCommitmentsDetails" xlink:href="cvx-20181231.xsd#LeaseCommitmentsDetails" xlink:type="simple"/>

<link:roleRef roleURI="http://www.chevron.com/role/LeaseCommitmentsTables" xlink:href="cvx-20181231.xsd#LeaseCommitmentsTables" xlink:type="simple"/>

<link:roleRef roleURI="http://www.chevron.com/role/Litigation" xlink:href="cvx-20181231.xsd#Litigation" xlink:type="simple"/>

<link:roleRef roleURI="http://www.chevron.com/role/LitigationDetails" xlink:href="cvx-20181231.xsd#LitigationDetails" xlink:type="simple"/>

<link:roleRef roleURI="http://www.chevron.com/role/LongTermDebt" xlink:href="cvx-20181231.xsd#LongTermDebt" xlink:type="simple"/>

<link:roleRef roleURI="http://www.chevron.com/role/LongTermDebtDetails" xlink:href="cvx-20181231.xsd#LongTermDebtDetails" xlink:type="simple"/>

<link:roleRef roleURI="http://www.chevron.com/role/LongTermDebtTables" xlink:href="cvx-20181231.xsd#LongTermDebtTables" xlink:type="simple"/>

<link:roleRef roleURI="http://www.chevron.com/role/NewAccountingStandards" xlink:href="cvx-20181231.xsd#NewAccountingStandards" xlink:type="simple"/>

<link:roleRef roleURI="http://www.chevron.com/role/NewAccountingStandardsDetails" xlink:href="cvx-20181231.xsd#NewAccountingStandardsDetails" xlink:type="simple"/>

<link:roleRef roleURI="http://www.chevron.com/role/OperatingSegmentsAndGeographicData" xlink:href="cvx-20181231.xsd#OperatingSegmentsAndGeographicData" xlink:type="simple"/>

<link:roleRef roleURI="http://www.chevron.com/role/OperatingSegmentsAndGeographicDataNarrativeDetails" xlink:href="cvx-20181231.xsd#OperatingSegmentsAndGeographicDataNarrativeDetails" xlink:type="simple"/>

<link:roleRef roleURI="http://www.chevron.com/role/OperatingSegmentsAndGeographicDataSegementIncomeTaxesDetails" xlink:href="cvx-20181231.xsd#OperatingSegmentsAndGeographicDataSegementIncomeTaxesDetails" xlink:type="simple"/>

<link:roleRef roleURI="http://www.chevron.com/role/OperatingSegmentsAndGeographicDataSegmentAssetsDetails" xlink:href="cvx-20181231.xsd#OperatingSegmentsAndGeographicDataSegmentAssetsDetails" xlink:type="simple"/>

<link:roleRef roleURI="http://www.chevron.com/role/OperatingSegmentsAndGeographicDataSegmentEarningsDetails" xlink:href="cvx-20181231.xsd#OperatingSegmentsAndGeographicDataSegmentEarningsDetails" xlink:type="simple"/>

<link:roleRef roleURI="http://www.chevron.com/role/OperatingSegmentsAndGeographicDataSegmentSalesAndOperatingRevenuesDetails" xlink:href="cvx-20181231.xsd#OperatingSegmentsAndGeographicDataSegmentSalesAndOperatingRevenuesDetails" xlink:type="simple"/>

<link:roleRef roleURI="http://www.chevron.com/role/OperatingSegmentsAndGeographicDataTables" xlink:href="cvx-20181231.xsd#OperatingSegmentsAndGeographicDataTables" xlink:type="simple"/>

<link:roleRef roleURI="http://www.chevron.com/role/OtherContingenciesAndCommitments" xlink:href="cvx-20181231.xsd#OtherContingenciesAndCommitments" xlink:type="simple"/>

<link:roleRef roleURI="http://www.chevron.com/role/OtherContingenciesAndCommitmentsDetails" xlink:href="cvx-20181231.xsd#OtherContingenciesAndCommitmentsDetails" xlink:type="simple"/>

<link:roleRef roleURI="http://www.chevron.com/role/OtherFinancialInformation" xlink:href="cvx-20181231.xsd#OtherFinancialInformation" xlink:type="simple"/>

<link:roleRef roleURI="http://www.chevron.com/role/OtherFinancialInformationDetails" xlink:href="cvx-20181231.xsd#OtherFinancialInformationDetails" xlink:type="simple"/>

<link:roleRef roleURI="http://www.chevron.com/role/OtherFinancialInformationTables" xlink:href="cvx-20181231.xsd#OtherFinancialInformationTables" xlink:type="simple"/>

<link:roleRef roleURI="http://www.chevron.com/role/PropertiesPlantAndEquipment" xlink:href="cvx-20181231.xsd#PropertiesPlantAndEquipment" xlink:type="simple"/>

<link:roleRef roleURI="http://www.chevron.com/role/PropertiesPlantAndEquipmentDetails" xlink:href="cvx-20181231.xsd#PropertiesPlantAndEquipmentDetails" xlink:type="simple"/>

<link:roleRef roleURI="http://www.chevron.com/role/PropertiesPlantAndEquipmentTables" xlink:href="cvx-20181231.xsd#PropertiesPlantAndEquipmentTables" xlink:type="simple"/>

<link:roleRef roleURI="http://www.chevron.com/role/Revenue" xlink:href="cvx-20181231.xsd#Revenue" xlink:type="simple"/>

<link:roleRef roleURI="http://www.chevron.com/role/RevenueDetails" xlink:href="cvx-20181231.xsd#RevenueDetails" xlink:type="simple"/>

<link:roleRef roleURI="http://www.chevron.com/role/ScheduleIiValuationAndQualifyingAccounts" xlink:href="cvx-20181231.xsd#ScheduleIiValuationAndQualifyingAccounts" xlink:type="simple"/>

<link:roleRef roleURI="http://www.chevron.com/role/ScheduleIiValuationAndQualifyingAccountsDetails" xlink:href="cvx-20181231.xsd#ScheduleIiValuationAndQualifyingAccountsDetails" xlink:type="simple"/>

<link:roleRef roleURI="http://www.chevron.com/role/ShortTermDebt" xlink:href="cvx-20181231.xsd#ShortTermDebt" xlink:type="simple"/>

<link:roleRef roleURI="http://www.chevron.com/role/ShortTermDebtNarrativeDetails" xlink:href="cvx-20181231.xsd#ShortTermDebtNarrativeDetails" xlink:type="simple"/>

<link:roleRef roleURI="http://www.chevron.com/role/ShortTermDebtSumamryDetails" xlink:href="cvx-20181231.xsd#ShortTermDebtSumamryDetails" xlink:type="simple"/>

<link:roleRef roleURI="http://www.chevron.com/role/ShortTermDebtTables" xlink:href="cvx-20181231.xsd#ShortTermDebtTables" xlink:type="simple"/>

<link:roleRef roleURI="http://www.chevron.com/role/StockOptionsAndOtherShareBasedCompensation" xlink:href="cvx-20181231.xsd#StockOptionsAndOtherShareBasedCompensation" xlink:type="simple"/>

<link:roleRef roleURI="http://www.chevron.com/role/StockOptionsAndOtherShareBasedCompensationNarrativeDetails" xlink:href="cvx-20181231.xsd#StockOptionsAndOtherShareBasedCompensationNarrativeDetails" xlink:type="simple"/>

<link:roleRef roleURI="http://www.chevron.com/role/StockOptionsAndOtherShareBasedCompensationSummaryOfValuationAssumptionsAndActivityDetails" xlink:href="cvx-20181231.xsd#StockOptionsAndOtherShareBasedCompensationSummaryOfValuationAssumptionsAndActivityDetails" xlink:type="simple"/>

<link:roleRef roleURI="http://www.chevron.com/role/StockOptionsAndOtherShareBasedCompensationTables" xlink:href="cvx-20181231.xsd#StockOptionsAndOtherShareBasedCompensationTables" xlink:type="simple"/>

<link:roleRef roleURI="http://www.chevron.com/role/SummarizedFinancialDataChevronUSAInc" xlink:href="cvx-20181231.xsd#SummarizedFinancialDataChevronUSAInc" xlink:type="simple"/>

<link:roleRef roleURI="http://www.chevron.com/role/SummarizedFinancialDataChevronUSAIncSummaryOfBalanceSheetInformationDetails" xlink:href="cvx-20181231.xsd#SummarizedFinancialDataChevronUSAIncSummaryOfBalanceSheetInformationDetails" xlink:type="simple"/>

<link:roleRef roleURI="http://www.chevron.com/role/SummarizedFinancialDataChevronUSAIncSummaryOfIncomeStatementInformationDetails" xlink:href="cvx-20181231.xsd#SummarizedFinancialDataChevronUSAIncSummaryOfIncomeStatementInformationDetails" xlink:type="simple"/>

<link:roleRef roleURI="http://www.chevron.com/role/SummarizedFinancialDataChevronUSAIncTables" xlink:href="cvx-20181231.xsd#SummarizedFinancialDataChevronUSAIncTables" xlink:type="simple"/>

<link:roleRef roleURI="http://www.chevron.com/role/SummarizedFinancialDataTengizchevroilLlp" xlink:href="cvx-20181231.xsd#SummarizedFinancialDataTengizchevroilLlp" xlink:type="simple"/>

<link:roleRef roleURI="http://www.chevron.com/role/SummarizedFinancialDataTengizchevroilLlpSummaryOfBalanceSheetInformationDetails" xlink:href="cvx-20181231.xsd#SummarizedFinancialDataTengizchevroilLlpSummaryOfBalanceSheetInformationDetails" xlink:type="simple"/>

<link:roleRef roleURI="http://www.chevron.com/role/SummarizedFinancialDataTengizchevroilLlpSummaryOfIncomeStatementInformationDetails" xlink:href="cvx-20181231.xsd#SummarizedFinancialDataTengizchevroilLlpSummaryOfIncomeStatementInformationDetails" xlink:type="simple"/>

<link:roleRef roleURI="http://www.chevron.com/role/SummarizedFinancialDataTengizchevroilLlpTables" xlink:href="cvx-20181231.xsd#SummarizedFinancialDataTengizchevroilLlpTables" xlink:type="simple"/>

<link:roleRef roleURI="http://www.chevron.com/role/SummaryOfSignificantAccountingPolicies" xlink:href="cvx-20181231.xsd#SummaryOfSignificantAccountingPolicies" xlink:type="simple"/>

<link:roleRef roleURI="http://www.chevron.com/role/SummaryOfSignificantAccountingPoliciesDetails" xlink:href="cvx-20181231.xsd#SummaryOfSignificantAccountingPoliciesDetails" xlink:type="simple"/>

<link:roleRef roleURI="http://www.chevron.com/role/SummaryOfSignificantAccountingPoliciesPolicies" xlink:href="cvx-20181231.xsd#SummaryOfSignificantAccountingPoliciesPolicies" xlink:type="simple"/>

<link:roleRef roleURI="http://www.chevron.com/role/Taxes" xlink:href="cvx-20181231.xsd#Taxes" xlink:type="simple"/>

<link:roleRef roleURI="http://www.chevron.com/role/TaxesEffectiveIncomeTaxReconcilliationAndSummaryOfDeferredTaxAssetsAndLiabilitiesDetails" xlink:href="cvx-20181231.xsd#TaxesEffectiveIncomeTaxReconcilliationAndSummaryOfDeferredTaxAssetsAndLiabilitiesDetails" xlink:type="simple"/>

<link:roleRef roleURI="http://www.chevron.com/role/TaxesNarrativeDetails" xlink:href="cvx-20181231.xsd#TaxesNarrativeDetails" xlink:type="simple"/>

<link:roleRef roleURI="http://www.chevron.com/role/TaxesSumamryOfUnrecognizedIncomeTaxBenefitsAndTaxesOtherThanOnIncomeDetails2" xlink:href="cvx-20181231.xsd#TaxesSumamryOfUnrecognizedIncomeTaxBenefitsAndTaxesOtherThanOnIncomeDetails2" xlink:type="simple"/>

<link:roleRef roleURI="http://www.chevron.com/role/TaxesSummaryOfComponentsOfIncomeTaxDetails" xlink:href="cvx-20181231.xsd#TaxesSummaryOfComponentsOfIncomeTaxDetails" xlink:type="simple"/>

<link:roleRef roleURI="http://www.chevron.com/role/TaxesTables" xlink:href="cvx-20181231.xsd#TaxesTables" xlink:type="simple"/>

<link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/all" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#all" xlink:type="simple"/>

<link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#dimension-default" xlink:type="simple"/>

<link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#dimension-domain" xlink:type="simple"/>

<link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/domain-member" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#domain-member" xlink:type="simple"/>

<link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#hypercube-dimension" xlink:type="simple"/>

<link:definitionLink xlink:role="http://www.chevron.com/role/AccountingForSuspendedExploratoryWells" xlink:type="extended"/>

<link:definitionLink xlink:role="http://www.chevron.com/role/AccountingForSuspendedExploratoryWellsAgingOfCostsOnWellAndProjectBasisDetails" xlink:type="extended">

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ProjectsWithExploratoryWellCostsCapitalizedForMoreThanOneYearLineItems" xlink:label="loc_us-gaap_ProjectsWithExploratoryWellCostsCapitalizedForMoreThanOneYearLineItems_1580328DC5A5E227ECFD3D7DD61A1BAB" xlink:type="locator"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ProjectsWithExploratoryWellCostsCapitalizedForMoreThanOneYearTable" xlink:label="loc_us-gaap_ProjectsWithExploratoryWellCostsCapitalizedForMoreThanOneYearTable_C6654559AC1F511B99983D7DD6189852" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ProjectsWithExploratoryWellCostsCapitalizedForMoreThanOneYearLineItems_1580328DC5A5E227ECFD3D7DD61A1BAB" xlink:to="loc_us-gaap_ProjectsWithExploratoryWellCostsCapitalizedForMoreThanOneYearTable_C6654559AC1F511B99983D7DD6189852" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AgingOfCapitalizedExploratoryWellCostsAxis" xlink:label="loc_us-gaap_AgingOfCapitalizedExploratoryWellCostsAxis_A94322CF9BC7C22BD8733D7DD6189171" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ProjectsWithExploratoryWellCostsCapitalizedForMoreThanOneYearTable_C6654559AC1F511B99983D7DD6189852" xlink:to="loc_us-gaap_AgingOfCapitalizedExploratoryWellCostsAxis_A94322CF9BC7C22BD8733D7DD6189171" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AgingOfCapitalizedExploratoryWellCostsPeriodRangeDomain" xlink:label="loc_us-gaap_AgingOfCapitalizedExploratoryWellCostsPeriodRangeDomain_60777FFB7FE0DE1F09AF3D7DD6183C0C_default" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AgingOfCapitalizedExploratoryWellCostsAxis_A94322CF9BC7C22BD8733D7DD6189171" xlink:to="loc_us-gaap_AgingOfCapitalizedExploratoryWellCostsPeriodRangeDomain_60777FFB7FE0DE1F09AF3D7DD6183C0C_default" xlink:type="arc"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AgingOfCapitalizedExploratoryWellCostsAxis_A94322CF9BC7C22BD8733D7DD6189171" xlink:to="loc_us-gaap_AgingOfCapitalizedExploratoryWellCostsPeriodRangeDomain_60777FFB7FE0DE1F09AF3D7DD6183C0C" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AgingOfCapitalizedExploratoryWellCostsPeriodOneMember" xlink:label="loc_us-gaap_AgingOfCapitalizedExploratoryWellCostsPeriodOneMember_51B341C9779188B439CC3D7DD619F417" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AgingOfCapitalizedExploratoryWellCostsPeriodRangeDomain_60777FFB7FE0DE1F09AF3D7DD6183C0C" xlink:to="loc_us-gaap_AgingOfCapitalizedExploratoryWellCostsPeriodOneMember_51B341C9779188B439CC3D7DD619F417" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AgingOfCapitalizedExploratoryWellCostsPeriodTwoMember" xlink:label="loc_us-gaap_AgingOfCapitalizedExploratoryWellCostsPeriodTwoMember_05929B82DB735E3FB6DC3D7DD6190A28" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AgingOfCapitalizedExploratoryWellCostsPeriodRangeDomain_60777FFB7FE0DE1F09AF3D7DD6183C0C" xlink:to="loc_us-gaap_AgingOfCapitalizedExploratoryWellCostsPeriodTwoMember_05929B82DB735E3FB6DC3D7DD6190A28" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AgingOfCapitalizedExploratoryWellCostsPeriodThreeMember" xlink:label="loc_us-gaap_AgingOfCapitalizedExploratoryWellCostsPeriodThreeMember_C9AFCB6865AA2BBCDD6B3D7DD6197B02" xlink:type="locator"/>

<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AgingOfCapitalizedExploratoryWellCostsPeriodRangeDomain_60777FFB7FE0DE1F09AF3D7DD6183C0C" xlink:to="loc_us-gaap_AgingOfCapitalizedExploratoryWellCostsPeriodThreeMember_C9AFCB6865AA2BBCDD6B3D7DD6197B02" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AgingOfCapitalizedExploratoryWellCostsPeriodFourMember" xlink:label="loc_us-gaap_AgingOfCapitalizedExploratoryWellCostsPeriodFourMember_9A12509A72C14C648E233D7DD6195F1E" xlink:type="locator"/>

<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AgingOfCapitalizedExploratoryWellCostsPeriodRangeDomain_60777FFB7FE0DE1F09AF3D7DD6183C0C" xlink:to="loc_us-gaap_AgingOfCapitalizedExploratoryWellCostsPeriodFourMember_9A12509A72C14C648E233D7DD6195F1E" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AgingOfCapitalizedExploratoryWellCostsPeriodFiveMember" xlink:label="loc_us-gaap_AgingOfCapitalizedExploratoryWellCostsPeriodFiveMember_B6BA05AE8D25DDEE1EAB3D7DD619B71D" xlink:type="locator"/>

<link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AgingOfCapitalizedExploratoryWellCostsPeriodRangeDomain_60777FFB7FE0DE1F09AF3D7DD6183C0C" xlink:to="loc_us-gaap_AgingOfCapitalizedExploratoryWellCostsPeriodFiveMember_B6BA05AE8D25DDEE1EAB3D7DD619B71D" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_AgingOfCapitalizedExploratoryWellCostsPeriodSixMember" xlink:label="loc_cvx_AgingOfCapitalizedExploratoryWellCostsPeriodSixMember_4D0627A0108B3C4D166F3D7DD61A4227" xlink:type="locator"/>

<link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AgingOfCapitalizedExploratoryWellCostsPeriodRangeDomain_60777FFB7FE0DE1F09AF3D7DD6183C0C" xlink:to="loc_cvx_AgingOfCapitalizedExploratoryWellCostsPeriodSixMember_4D0627A0108B3C4D166F3D7DD61A4227" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CapitalizedExploratoryWellCostsThatHaveBeenCapitalizedForPeriodGreaterThanOneYear" xlink:label="loc_us-gaap_CapitalizedExploratoryWellCostsThatHaveBeenCapitalizedForPeriodGreaterThanOneYear_96297AC31A1E47B886063D7DD61A2903" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ProjectsWithExploratoryWellCostsCapitalizedForMoreThanOneYearLineItems_1580328DC5A5E227ECFD3D7DD61A1BAB" xlink:to="loc_us-gaap_CapitalizedExploratoryWellCostsThatHaveBeenCapitalizedForPeriodGreaterThanOneYear_96297AC31A1E47B886063D7DD61A2903" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_ExploratoryWellsThatHaveBeenCapitalizedForPeriodGreaterThanOneYearNumberOfWellsWithMultipleCompletionsGross" xlink:label="loc_cvx_ExploratoryWellsThatHaveBeenCapitalizedForPeriodGreaterThanOneYearNumberOfWellsWithMultipleCompletionsGross_703D086584F91501C7493D7DD61B02F4" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ProjectsWithExploratoryWellCostsCapitalizedForMoreThanOneYearLineItems_1580328DC5A5E227ECFD3D7DD61A1BAB" xlink:to="loc_cvx_ExploratoryWellsThatHaveBeenCapitalizedForPeriodGreaterThanOneYearNumberOfWellsWithMultipleCompletionsGross_703D086584F91501C7493D7DD61B02F4" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ProjectsThatHaveExploratoryWellCostsThatHaveBeenCapitalizedForPeriodGreaterThanOneYear" xlink:label="loc_us-gaap_ProjectsThatHaveExploratoryWellCostsThatHaveBeenCapitalizedForPeriodGreaterThanOneYear_D78BB7D632E25B36B79A3D7DD61B5D05" xlink:type="locator"/>

<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ProjectsWithExploratoryWellCostsCapitalizedForMoreThanOneYearLineItems_1580328DC5A5E227ECFD3D7DD61A1BAB" xlink:to="loc_us-gaap_ProjectsThatHaveExploratoryWellCostsThatHaveBeenCapitalizedForPeriodGreaterThanOneYear_D78BB7D632E25B36B79A3D7DD61B5D05" xlink:type="arc"/>

</link:definitionLink>

<link:definitionLink xlink:role="http://www.chevron.com/role/AccountingForSuspendedExploratoryWellsNarrativeDetails" xlink:type="extended">

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ProjectsWithExploratoryWellCostsCapitalizedForMoreThanOneYearLineItems" xlink:label="loc_us-gaap_ProjectsWithExploratoryWellCostsCapitalizedForMoreThanOneYearLineItems_BCD926C905B1DF8878927F3C547AE6C2" xlink:type="locator"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ProjectsWithExploratoryWellCostsCapitalizedForMoreThanOneYearTable" xlink:label="loc_us-gaap_ProjectsWithExploratoryWellCostsCapitalizedForMoreThanOneYearTable_DC2FA7B6BB80CC8A83507F3C54728A6E" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ProjectsWithExploratoryWellCostsCapitalizedForMoreThanOneYearLineItems_BCD926C905B1DF8878927F3C547AE6C2" xlink:to="loc_us-gaap_ProjectsWithExploratoryWellCostsCapitalizedForMoreThanOneYearTable_DC2FA7B6BB80CC8A83507F3C54728A6E" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CapitalizedCostsOfUnprovedPropertiesExcludedFromAmortizationByPropertyOrProjectAxis" xlink:label="loc_us-gaap_CapitalizedCostsOfUnprovedPropertiesExcludedFromAmortizationByPropertyOrProjectAxis_E14B7B70CC706CB156CB7F3C54729E68" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ProjectsWithExploratoryWellCostsCapitalizedForMoreThanOneYearTable_DC2FA7B6BB80CC8A83507F3C54728A6E" xlink:to="loc_us-gaap_CapitalizedCostsOfUnprovedPropertiesExcludedFromAmortizationByPropertyOrProjectAxis_E14B7B70CC706CB156CB7F3C54729E68" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ProjectMember" xlink:label="loc_us-gaap_ProjectMember_10BAF74FF990D1C6D9117F3C54731A93_default" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_CapitalizedCostsOfUnprovedPropertiesExcludedFromAmortizationByPropertyOrProjectAxis_E14B7B70CC706CB156CB7F3C54729E68" xlink:to="loc_us-gaap_ProjectMember_10BAF74FF990D1C6D9117F3C54731A93_default" xlink:type="arc"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_CapitalizedCostsOfUnprovedPropertiesExcludedFromAmortizationByPropertyOrProjectAxis_E14B7B70CC706CB156CB7F3C54729E68" xlink:to="loc_us-gaap_ProjectMember_10BAF74FF990D1C6D9117F3C54731A93" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_UndergoingFrontEndEngineeringAndDesignWithFinalInvestmentDecisionExpectedMember" xlink:label="loc_cvx_UndergoingFrontEndEngineeringAndDesignWithFinalInvestmentDecisionExpectedMember_65087BDA7582B83D77007F3C5473B7F2" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ProjectMember_10BAF74FF990D1C6D9117F3C54731A93" xlink:to="loc_cvx_UndergoingFrontEndEngineeringAndDesignWithFinalInvestmentDecisionExpectedMember_65087BDA7582B83D77007F3C5473B7F2" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_DevelopmentConceptUnderReviewByGovernmentMember" xlink:label="loc_cvx_DevelopmentConceptUnderReviewByGovernmentMember_6521956F7BF5410D25497F3C5473A69B" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ProjectMember_10BAF74FF990D1C6D9117F3C54731A93" xlink:to="loc_cvx_DevelopmentConceptUnderReviewByGovernmentMember_6521956F7BF5410D25497F3C5473A69B" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_ReviewingDevelopmentAlternativesMember" xlink:label="loc_cvx_ReviewingDevelopmentAlternativesMember_AD265512BCF93C51AB427F3C5473DB01" xlink:type="locator"/>

<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ProjectMember_10BAF74FF990D1C6D9117F3C54731A93" xlink:to="loc_cvx_ReviewingDevelopmentAlternativesMember_AD265512BCF93C51AB427F3C5473DB01" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_MiscellaneousActivitiesforProjectswithSmallerAmountsSuspendedMember" xlink:label="loc_cvx_MiscellaneousActivitiesforProjectswithSmallerAmountsSuspendedMember_BE488872CC117DEE99707F3C54740365" xlink:type="locator"/>

<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ProjectMember_10BAF74FF990D1C6D9117F3C54731A93" xlink:to="loc_cvx_MiscellaneousActivitiesforProjectswithSmallerAmountsSuspendedMember_BE488872CC117DEE99707F3C54740365" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_ProjectsWithExploratoryWellCostsCapitalizedForMoreThanOneYearByDifferentActivitiesAxis" xlink:label="loc_cvx_ProjectsWithExploratoryWellCostsCapitalizedForMoreThanOneYearByDifferentActivitiesAxis_5D014E82C46BFC7375307F3C54792C5B" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ProjectsWithExploratoryWellCostsCapitalizedForMoreThanOneYearTable_DC2FA7B6BB80CC8A83507F3C54728A6E" xlink:to="loc_cvx_ProjectsWithExploratoryWellCostsCapitalizedForMoreThanOneYearByDifferentActivitiesAxis_5D014E82C46BFC7375307F3C54792C5B" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_ProjectsWithExploratoryWellCostsCapitalizedForMoreThanOneYearByDifferentActivitiesDomain" xlink:label="loc_cvx_ProjectsWithExploratoryWellCostsCapitalizedForMoreThanOneYearByDifferentActivitiesDomain_C96AB687975734B041C77F3C5479F8E3_default" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_cvx_ProjectsWithExploratoryWellCostsCapitalizedForMoreThanOneYearByDifferentActivitiesAxis_5D014E82C46BFC7375307F3C54792C5B" xlink:to="loc_cvx_ProjectsWithExploratoryWellCostsCapitalizedForMoreThanOneYearByDifferentActivitiesDomain_C96AB687975734B041C77F3C5479F8E3_default" xlink:type="arc"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_cvx_ProjectsWithExploratoryWellCostsCapitalizedForMoreThanOneYearByDifferentActivitiesAxis_5D014E82C46BFC7375307F3C54792C5B" xlink:to="loc_cvx_ProjectsWithExploratoryWellCostsCapitalizedForMoreThanOneYearByDifferentActivitiesDomain_C96AB687975734B041C77F3C5479F8E3" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_DrillingActivityMember" xlink:label="loc_cvx_DrillingActivityMember_02AFDC6E9E029434D0487F3C5479F313" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_cvx_ProjectsWithExploratoryWellCostsCapitalizedForMoreThanOneYearByDifferentActivitiesDomain_C96AB687975734B041C77F3C5479F8E3" xlink:to="loc_cvx_DrillingActivityMember_02AFDC6E9E029434D0487F3C5479F313" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_NoDrillingActivityMember" xlink:label="loc_cvx_NoDrillingActivityMember_18E9DE695817BDBC02FE7F3C547A115C" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_cvx_ProjectsWithExploratoryWellCostsCapitalizedForMoreThanOneYearByDifferentActivitiesDomain_C96AB687975734B041C77F3C5479F8E3" xlink:to="loc_cvx_NoDrillingActivityMember_18E9DE695817BDBC02FE7F3C547A115C" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CapitalizedExploratoryWellCostsThatHaveBeenCapitalizedForPeriodGreaterThanOneYear" xlink:label="loc_us-gaap_CapitalizedExploratoryWellCostsThatHaveBeenCapitalizedForPeriodGreaterThanOneYear_F07B4504FF7CF711C8607F3C547AC34F" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ProjectsWithExploratoryWellCostsCapitalizedForMoreThanOneYearLineItems_BCD926C905B1DF8878927F3C547AE6C2" xlink:to="loc_us-gaap_CapitalizedExploratoryWellCostsThatHaveBeenCapitalizedForPeriodGreaterThanOneYear_F07B4504FF7CF711C8607F3C547AC34F" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ProjectsThatHaveExploratoryWellCostsThatHaveBeenCapitalizedForPeriodGreaterThanOneYear" xlink:label="loc_us-gaap_ProjectsThatHaveExploratoryWellCostsThatHaveBeenCapitalizedForPeriodGreaterThanOneYear_B3CDADA94570BC090B337F3C547ADA0C" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ProjectsWithExploratoryWellCostsCapitalizedForMoreThanOneYearLineItems_BCD926C905B1DF8878927F3C547AE6C2" xlink:to="loc_us-gaap_ProjectsThatHaveExploratoryWellCostsThatHaveBeenCapitalizedForPeriodGreaterThanOneYear_B3CDADA94570BC090B337F3C547ADA0C" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_UndergoingFrontEndEngineeringAndDesignWithFinalInvestmentDecisionExpectedInThreeYears" xlink:label="loc_cvx_UndergoingFrontEndEngineeringAndDesignWithFinalInvestmentDecisionExpectedInThreeYears_46BBF1BCBF92083666357F3C547BEA23" xlink:type="locator"/>

<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ProjectsWithExploratoryWellCostsCapitalizedForMoreThanOneYearLineItems_BCD926C905B1DF8878927F3C547AE6C2" xlink:to="loc_cvx_UndergoingFrontEndEngineeringAndDesignWithFinalInvestmentDecisionExpectedInThreeYears_46BBF1BCBF92083666357F3C547BEA23" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_ExpectedPeriodForDecisionOnRecognitionOfProvedReserves" xlink:label="loc_cvx_ExpectedPeriodForDecisionOnRecognitionOfProvedReserves_9967283EC4FA674922867F3C547BEEC9" xlink:type="locator"/>

<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ProjectsWithExploratoryWellCostsCapitalizedForMoreThanOneYearLineItems_BCD926C905B1DF8878927F3C547AE6C2" xlink:to="loc_cvx_ExpectedPeriodForDecisionOnRecognitionOfProvedReserves_9967283EC4FA674922867F3C547BEEC9" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_ExploratoryWellsThatHaveBeenCapitalizedForPeriodGreaterThanOneYearNumberOfWellsWithMultipleCompletionsGross" xlink:label="loc_cvx_ExploratoryWellsThatHaveBeenCapitalizedForPeriodGreaterThanOneYearNumberOfWellsWithMultipleCompletionsGross_CED1006905647B157F6A7F3C547B6776" xlink:type="locator"/>

<link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ProjectsWithExploratoryWellCostsCapitalizedForMoreThanOneYearLineItems_BCD926C905B1DF8878927F3C547AE6C2" xlink:to="loc_cvx_ExploratoryWellsThatHaveBeenCapitalizedForPeriodGreaterThanOneYearNumberOfWellsWithMultipleCompletionsGross_CED1006905647B157F6A7F3C547B6776" xlink:type="arc"/>

</link:definitionLink>

<link:definitionLink xlink:role="http://www.chevron.com/role/AccountingForSuspendedExploratoryWellsSummaryOfChangesAndAgingOfCapitalizedWellCostsDetails" xlink:type="extended"/>

<link:definitionLink xlink:role="http://www.chevron.com/role/AccountingForSuspendedExploratoryWellsTables" xlink:type="extended"/>

<link:definitionLink xlink:role="http://www.chevron.com/role/AssetRetirementObligations" xlink:type="extended"/>

<link:definitionLink xlink:role="http://www.chevron.com/role/AssetRetirementObligationsDetails" xlink:type="extended"/>

<link:definitionLink xlink:role="http://www.chevron.com/role/AssetRetirementObligationsTables" xlink:type="extended"/>

<link:definitionLink xlink:role="http://www.chevron.com/role/AssetsHeldForSale" xlink:type="extended"/>

<link:definitionLink xlink:role="http://www.chevron.com/role/AssetsHeldForSaleDetails" xlink:type="extended">

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems" xlink:label="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_953919BC8C3B057E924E3DF654F95084" xlink:type="locator"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable" xlink:label="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable_8B020729EEC8A568BCA63DF654F8D178" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_953919BC8C3B057E924E3DF654F95084" xlink:to="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable_8B020729EEC8A568BCA63DF654F8D178" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DisposalGroupClassificationAxis" xlink:label="loc_us-gaap_DisposalGroupClassificationAxis_68A93F44FF1C84B3452F3DF654F870A4" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable_8B020729EEC8A568BCA63DF654F8D178" xlink:to="loc_us-gaap_DisposalGroupClassificationAxis_68A93F44FF1C84B3452F3DF654F870A4" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DisposalGroupClassificationDomain" xlink:label="loc_us-gaap_DisposalGroupClassificationDomain_07F92EE1EA2DEF2F34A73DF654F99F72_default" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DisposalGroupClassificationAxis_68A93F44FF1C84B3452F3DF654F870A4" xlink:to="loc_us-gaap_DisposalGroupClassificationDomain_07F92EE1EA2DEF2F34A73DF654F99F72_default" xlink:type="arc"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DisposalGroupClassificationAxis_68A93F44FF1C84B3452F3DF654F870A4" xlink:to="loc_us-gaap_DisposalGroupClassificationDomain_07F92EE1EA2DEF2F34A73DF654F99F72" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DisposalGroupHeldForSaleOrDisposedOfBySaleNotDiscontinuedOperationsMember" xlink:label="loc_us-gaap_DisposalGroupHeldForSaleOrDisposedOfBySaleNotDiscontinuedOperationsMember_CACEC2825B4A580CA5F73DF654F993B7" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupClassificationDomain_07F92EE1EA2DEF2F34A73DF654F99F72" xlink:to="loc_us-gaap_DisposalGroupHeldForSaleOrDisposedOfBySaleNotDiscontinuedOperationsMember_CACEC2825B4A580CA5F73DF654F993B7" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DisposalGroupIncludingDiscontinuedOperationPropertyPlantAndEquipment" xlink:label="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationPropertyPlantAndEquipment_4844AFBFA4C7ED75D1943DF654FA388C" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_953919BC8C3B057E924E3DF654F95084" xlink:to="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationPropertyPlantAndEquipment_4844AFBFA4C7ED75D1943DF654FA388C" xlink:type="arc"/>

</link:definitionLink>

<link:definitionLink xlink:role="http://www.chevron.com/role/ChangesInAccumulatedOtherComprehensiveLosses" xlink:type="extended"/>

<link:definitionLink xlink:role="http://www.chevron.com/role/ChangesInAccumulatedOtherComprehensiveLossesSummaryOfChangedDetails" xlink:type="extended">

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems_E2ADBD5EA4846DF887CDC9BCDC1A19EA" xlink:type="locator"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossTable" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossTable_582399629351569DD9ECC9BCDC13DBBF" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems_E2ADBD5EA4846DF887CDC9BCDC1A19EA" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossTable_582399629351569DD9ECC9BCDC13DBBF" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StatementEquityComponentsAxis" xlink:label="loc_us-gaap_StatementEquityComponentsAxis_B99DD5143D58F42F11D5C9BCDC142604" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossTable_582399629351569DD9ECC9BCDC13DBBF" xlink:to="loc_us-gaap_StatementEquityComponentsAxis_B99DD5143D58F42F11D5C9BCDC142604" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EquityComponentDomain" xlink:label="loc_us-gaap_EquityComponentDomain_44137E212C8E2B6D7A96C9BCDC147183_default" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_B99DD5143D58F42F11D5C9BCDC142604" xlink:to="loc_us-gaap_EquityComponentDomain_44137E212C8E2B6D7A96C9BCDC147183_default" xlink:type="arc"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_B99DD5143D58F42F11D5C9BCDC142604" xlink:to="loc_us-gaap_EquityComponentDomain_44137E212C8E2B6D7A96C9BCDC147183" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AccumulatedTranslationAdjustmentMember" xlink:label="loc_us-gaap_AccumulatedTranslationAdjustmentMember_7BBC662DE08A655D75F8C9BCDC148563" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_44137E212C8E2B6D7A96C9BCDC147183" xlink:to="loc_us-gaap_AccumulatedTranslationAdjustmentMember_7BBC662DE08A655D75F8C9BCDC148563" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AccumulatedNetUnrealizedInvestmentGainLossMember" xlink:label="loc_us-gaap_AccumulatedNetUnrealizedInvestmentGainLossMember_FC50CF0551A8E5DDD7ECC9BCDC1557F6" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_44137E212C8E2B6D7A96C9BCDC147183" xlink:to="loc_us-gaap_AccumulatedNetUnrealizedInvestmentGainLossMember_FC50CF0551A8E5DDD7ECC9BCDC1557F6" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedgesMember" xlink:label="loc_us-gaap_AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedgesMember_7446FFA6CEC87F6A942CC9BCDC155798" xlink:type="locator"/>

<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_44137E212C8E2B6D7A96C9BCDC147183" xlink:to="loc_us-gaap_AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedgesMember_7446FFA6CEC87F6A942CC9BCDC155798" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember" xlink:label="loc_us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember_6CD268AAD524B67E36E4C9BCDC1623EE" xlink:type="locator"/>

<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_44137E212C8E2B6D7A96C9BCDC147183" xlink:to="loc_us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember_6CD268AAD524B67E36E4C9BCDC1623EE" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AociIncludingPortionAttributableToNoncontrollingInterestMember" xlink:label="loc_us-gaap_AociIncludingPortionAttributableToNoncontrollingInterestMember_A961485BB7C09B2A8F72C9BCDC167C31" xlink:type="locator"/>

<link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_44137E212C8E2B6D7A96C9BCDC147183" xlink:to="loc_us-gaap_AociIncludingPortionAttributableToNoncontrollingInterestMember_A961485BB7C09B2A8F72C9BCDC167C31" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis" xlink:label="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis_CFBBCB1248743BFE86BCC9BCDC17374E" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossTable_582399629351569DD9ECC9BCDC13DBBF" xlink:to="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis_CFBBCB1248743BFE86BCC9BCDC17374E" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeDomain" xlink:label="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeDomain_B89AACBA7BA82F4CEB42C9BCDC171486_default" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis_CFBBCB1248743BFE86BCC9BCDC17374E" xlink:to="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeDomain_B89AACBA7BA82F4CEB42C9BCDC171486_default" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeDomain" xlink:label="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeDomain_B89AACBA7BA82F4CEB42C9BCDC171486" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis_CFBBCB1248743BFE86BCC9BCDC17374E" xlink:to="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeDomain_B89AACBA7BA82F4CEB42C9BCDC171486" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember" xlink:label="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember_3559878949617D33C993C9BCDC199854" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeDomain_B89AACBA7BA82F4CEB42C9BCDC171486" xlink:to="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember_3559878949617D33C993C9BCDC199854" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTaxAbstract" xlink:label="loc_us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTaxAbstract_31C6F52CEA7555F1CF50C9BCDC1A0C01" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems_E2ADBD5EA4846DF887CDC9BCDC1A19EA" xlink:to="loc_us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTaxAbstract_31C6F52CEA7555F1CF50C9BCDC1A0C01" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest" xlink:label="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_D9D9B89413D4382EBEDAC9BCDC1BE213" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTaxAbstract_31C6F52CEA7555F1CF50C9BCDC1A0C01" xlink:to="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_D9D9B89413D4382EBEDAC9BCDC1BE213" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTaxPeriodChangeAbstract" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPeriodChangeAbstract_2769B659776347DEA39BC9BCDC1BD8C5" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTaxAbstract_31C6F52CEA7555F1CF50C9BCDC1A0C01" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPeriodChangeAbstract_2769B659776347DEA39BC9BCDC1BD8C5" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax_B3C99671B29AA0B7D56DC9BCDC1BB574" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPeriodChangeAbstract_2769B659776347DEA39BC9BCDC1BD8C5" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax_B3C99671B29AA0B7D56DC9BCDC1BB574" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax" xlink:label="loc_us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax_CAE27A3D1F55569DB8C4C9BCDC1CA6D1" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPeriodChangeAbstract_2769B659776347DEA39BC9BCDC1BD8C5" xlink:to="loc_us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax_CAE27A3D1F55569DB8C4C9BCDC1CA6D1" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTax" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_EEFDEBCC30190F03F126C9BCDC1C1E31" xlink:type="locator"/>

<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPeriodChangeAbstract_2769B659776347DEA39BC9BCDC1BD8C5" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_EEFDEBCC30190F03F126C9BCDC1C1E31" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_TaxCutsAndJobsActOf2017ReclassificationFromAOCIToRetainedEarningsTaxEffect" xlink:label="loc_cvx_TaxCutsAndJobsActOf2017ReclassificationFromAOCIToRetainedEarningsTaxEffect_492940A8AF5D87D17DEDC9BCDC1CFF9F" xlink:type="locator"/>

<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPeriodChangeAbstract_2769B659776347DEA39BC9BCDC1BD8C5" xlink:to="loc_cvx_TaxCutsAndJobsActOf2017ReclassificationFromAOCIToRetainedEarningsTaxEffect_492940A8AF5D87D17DEDC9BCDC1CFF9F" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodBeforeTax" xlink:label="loc_us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodBeforeTax_A7A3BE5DD8EFF9AA769CC9BCDC1D167B" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems_E2ADBD5EA4846DF887CDC9BCDC1A19EA" xlink:to="loc_us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodBeforeTax_A7A3BE5DD8EFF9AA769CC9BCDC1D167B" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncomeTaxExpenseBenefit" xlink:label="loc_us-gaap_IncomeTaxExpenseBenefit_C1184B2A32DB06640CD9C9BCDC1D7E70" xlink:type="locator"/>

<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems_E2ADBD5EA4846DF887CDC9BCDC1A19EA" xlink:to="loc_us-gaap_IncomeTaxExpenseBenefit_C1184B2A32DB06640CD9C9BCDC1D7E70" xlink:type="arc"/>

</link:definitionLink>

<link:definitionLink xlink:role="http://www.chevron.com/role/ChangesInAccumulatedOtherComprehensiveLossesTables" xlink:type="extended"/>

<link:definitionLink xlink:role="http://www.chevron.com/role/ConsolidatedBalanceSheet" xlink:type="extended"/>

<link:definitionLink xlink:role="http://www.chevron.com/role/ConsolidatedBalanceSheetParenthetical" xlink:type="extended"/>

<link:definitionLink xlink:role="http://www.chevron.com/role/ConsolidatedStatementOfCashFlows" xlink:type="extended"/>

<link:definitionLink xlink:role="http://www.chevron.com/role/ConsolidatedStatementOfComprehensiveIncome" xlink:type="extended"/>

<link:definitionLink xlink:role="http://www.chevron.com/role/ConsolidatedStatementOfEquity" xlink:type="extended">

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StatementLineItems" xlink:label="loc_us-gaap_StatementLineItems_86DF1A7DF623A769F82F08A841484F4C" xlink:type="locator"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StatementTable" xlink:label="loc_us-gaap_StatementTable_1BC95B19B92D8C7CC46B08A8414698C3" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_86DF1A7DF623A769F82F08A841484F4C" xlink:to="loc_us-gaap_StatementTable_1BC95B19B92D8C7CC46B08A8414698C3" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StatementEquityComponentsAxis" xlink:label="loc_us-gaap_StatementEquityComponentsAxis_C4D4B767BA26CD499A6F08A841475337" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_1BC95B19B92D8C7CC46B08A8414698C3" xlink:to="loc_us-gaap_StatementEquityComponentsAxis_C4D4B767BA26CD499A6F08A841475337" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EquityComponentDomain" xlink:label="loc_us-gaap_EquityComponentDomain_E26C5A17CBC93E372D3908A84147F8B8_default" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_C4D4B767BA26CD499A6F08A841475337" xlink:to="loc_us-gaap_EquityComponentDomain_E26C5A17CBC93E372D3908A84147F8B8_default" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EquityComponentDomain" xlink:label="loc_us-gaap_EquityComponentDomain_E26C5A17CBC93E372D3908A84147F8B8" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_C4D4B767BA26CD499A6F08A841475337" xlink:to="loc_us-gaap_EquityComponentDomain_E26C5A17CBC93E372D3908A84147F8B8" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CommonStockIncludingAdditionalPaidInCapitalMember" xlink:label="loc_us-gaap_CommonStockIncludingAdditionalPaidInCapitalMember_2A63508DBC5E3D2F26E008A8414730C6" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_E26C5A17CBC93E372D3908A84147F8B8" xlink:to="loc_us-gaap_CommonStockIncludingAdditionalPaidInCapitalMember_2A63508DBC5E3D2F26E008A8414730C6" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RetainedEarningsMember" xlink:label="loc_us-gaap_RetainedEarningsMember_0353F4BA6E20F15BB62308A8414795B8" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_E26C5A17CBC93E372D3908A84147F8B8" xlink:to="loc_us-gaap_RetainedEarningsMember_0353F4BA6E20F15BB62308A8414795B8" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AociIncludingPortionAttributableToNoncontrollingInterestMember" xlink:label="loc_us-gaap_AociIncludingPortionAttributableToNoncontrollingInterestMember_1EA224C3E8A5BB35A9A408A841474E17" xlink:type="locator"/>

<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_E26C5A17CBC93E372D3908A84147F8B8" xlink:to="loc_us-gaap_AociIncludingPortionAttributableToNoncontrollingInterestMember_1EA224C3E8A5BB35A9A408A841474E17" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_TreasuryStockMember" xlink:label="loc_us-gaap_TreasuryStockMember_8ACC2DEEF2EFAC55CE3108A84148AABC" xlink:type="locator"/>

<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_E26C5A17CBC93E372D3908A84147F8B8" xlink:to="loc_us-gaap_TreasuryStockMember_8ACC2DEEF2EFAC55CE3108A84148AABC" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ParentMember" xlink:label="loc_us-gaap_ParentMember_76AA5F2900B2608F827D08A84148FDCC" xlink:type="locator"/>

<link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_E26C5A17CBC93E372D3908A84147F8B8" xlink:to="loc_us-gaap_ParentMember_76AA5F2900B2608F827D08A84148FDCC" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NoncontrollingInterestMember" xlink:label="loc_us-gaap_NoncontrollingInterestMember_064B0C863A3E690C700208A84148BBFC" xlink:type="locator"/>

<link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_E26C5A17CBC93E372D3908A84147F8B8" xlink:to="loc_us-gaap_NoncontrollingInterestMember_064B0C863A3E690C700208A84148BBFC" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncreaseDecreaseInStockholdersEquityRollForward" xlink:label="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_27CA557C1795F029C02F08A84148DD09" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_86DF1A7DF623A769F82F08A841484F4C" xlink:to="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_27CA557C1795F029C02F08A84148DD09" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest" xlink:label="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_660E2BED105E1629FE7308A8414815D4" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_27CA557C1795F029C02F08A84148DD09" xlink:to="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_660E2BED105E1629FE7308A8414815D4" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_AdjustmentsToAdditionalPaidInCapital" xlink:label="loc_cvx_AdjustmentsToAdditionalPaidInCapital_BD02419AEC585D98EFA208A8414837C2" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_27CA557C1795F029C02F08A84148DD09" xlink:to="loc_cvx_AdjustmentsToAdditionalPaidInCapital_BD02419AEC585D98EFA208A8414837C2" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ProfitLoss" xlink:label="loc_us-gaap_ProfitLoss_4E978C332B30FB7A91C308A8414A1475" xlink:type="locator"/>

<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_27CA557C1795F029C02F08A84148DD09" xlink:to="loc_us-gaap_ProfitLoss_4E978C332B30FB7A91C308A8414A1475" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DividendsCommonStockCash" xlink:label="loc_us-gaap_DividendsCommonStockCash_7F93F4BFB928E26E0B1F08A8414AE498" xlink:type="locator"/>

<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_27CA557C1795F029C02F08A84148DD09" xlink:to="loc_us-gaap_DividendsCommonStockCash_7F93F4BFB928E26E0B1F08A8414AE498" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DividendsCommonStockStock" xlink:label="loc_us-gaap_DividendsCommonStockStock_E2CF643632ACF4C8E1BD08A8414A3BCE" xlink:type="locator"/>

<link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_27CA557C1795F029C02F08A84148DD09" xlink:to="loc_us-gaap_DividendsCommonStockStock_E2CF643632ACF4C8E1BD08A8414A3BCE" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTax" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_9D6779A9D16C4B573F0208A8414A5413" xlink:type="locator"/>

<link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_27CA557C1795F029C02F08A84148DD09" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_9D6779A9D16C4B573F0208A8414A5413" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_TreasuryStockValueAcquiredCostMethod" xlink:label="loc_us-gaap_TreasuryStockValueAcquiredCostMethod_DC9444C829BB85258F3E08A8414A7C34" xlink:type="locator"/>

<link:definitionArc order="7" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_27CA557C1795F029C02F08A84148DD09" xlink:to="loc_us-gaap_TreasuryStockValueAcquiredCostMethod_DC9444C829BB85258F3E08A8414A7C34" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StockIssuedDuringPeriodValueTreasuryStockReissued" xlink:label="loc_us-gaap_StockIssuedDuringPeriodValueTreasuryStockReissued_20BD9F23177D07D8643108A8414AD70A" xlink:type="locator"/>

<link:definitionArc order="8" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_27CA557C1795F029C02F08A84148DD09" xlink:to="loc_us-gaap_StockIssuedDuringPeriodValueTreasuryStockReissued_20BD9F23177D07D8643108A8414AD70A" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StockholdersEquityOther" xlink:label="loc_us-gaap_StockholdersEquityOther_9D4CEEDE1A888E272CF408A8414A944E" xlink:type="locator"/>

<link:definitionArc order="9" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_27CA557C1795F029C02F08A84148DD09" xlink:to="loc_us-gaap_StockholdersEquityOther_9D4CEEDE1A888E272CF408A8414A944E" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SharesIssued" xlink:label="loc_us-gaap_SharesIssued_F3BEF55F747AD96179E508A8414A9C65" xlink:type="locator"/>

<link:definitionArc order="11" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_27CA557C1795F029C02F08A84148DD09" xlink:to="loc_us-gaap_SharesIssued_F3BEF55F747AD96179E508A8414A9C65" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_TreasuryStockCommonShares" xlink:label="loc_us-gaap_TreasuryStockCommonShares_66F521BF005210072B6308A8414AA68E" xlink:type="locator"/>

<link:definitionArc order="12" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_27CA557C1795F029C02F08A84148DD09" xlink:to="loc_us-gaap_TreasuryStockCommonShares_66F521BF005210072B6308A8414AA68E" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SharesOutstanding" xlink:label="loc_us-gaap_SharesOutstanding_4784E99564A67F6FF91C08A8414A9CAC" xlink:type="locator"/>

<link:definitionArc order="13" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_27CA557C1795F029C02F08A84148DD09" xlink:to="loc_us-gaap_SharesOutstanding_4784E99564A67F6FF91C08A8414A9CAC" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_TreasuryStockSharesAcquired" xlink:label="loc_us-gaap_TreasuryStockSharesAcquired_2644BB7DE00924481B6708A8414AE9EF" xlink:type="locator"/>

<link:definitionArc order="14" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_27CA557C1795F029C02F08A84148DD09" xlink:to="loc_us-gaap_TreasuryStockSharesAcquired_2644BB7DE00924481B6708A8414AE9EF" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StockIssuedDuringPeriodSharesTreasuryStockReissued" xlink:label="loc_us-gaap_StockIssuedDuringPeriodSharesTreasuryStockReissued_E8CE87DCE2317D3A58A308A8414A562C" xlink:type="locator"/>

<link:definitionArc order="15" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_27CA557C1795F029C02F08A84148DD09" xlink:to="loc_us-gaap_StockIssuedDuringPeriodSharesTreasuryStockReissued_E8CE87DCE2317D3A58A308A8414A562C" xlink:type="arc"/>

</link:definitionLink>

<link:definitionLink xlink:role="http://www.chevron.com/role/ConsolidatedStatementOfEquityParenthetical" xlink:type="extended"/>

<link:definitionLink xlink:role="http://www.chevron.com/role/ConsolidatedStatementOfIncome" xlink:type="extended"/>

<link:definitionLink xlink:role="http://www.chevron.com/role/ConsolidatedStatementOfIncomeParenthetical" xlink:type="extended"/>

<link:definitionLink xlink:role="http://www.chevron.com/role/DocumentAndEntityInformation" xlink:type="extended"/>

<link:definitionLink xlink:role="http://www.chevron.com/role/EarningsPerShare" xlink:type="extended"/>

<link:definitionLink xlink:role="http://www.chevron.com/role/EarningsPerShareDetails" xlink:type="extended">

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems" xlink:label="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems_EFC4596F503AFF761F043DF654E540FA" xlink:type="locator"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable" xlink:label="loc_us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable_2EB896DF427FC7B9F41D3DF654E4126C" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems_EFC4596F503AFF761F043DF654E540FA" xlink:to="loc_us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable_2EB896DF427FC7B9F41D3DF654E4126C" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis" xlink:label="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis_26A1245E9CBDFABAC35A3DF654E4F572" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable_2EB896DF427FC7B9F41D3DF654E4126C" xlink:to="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis_26A1245E9CBDFABAC35A3DF654E4F572" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AntidilutiveSecuritiesNameDomain" xlink:label="loc_us-gaap_AntidilutiveSecuritiesNameDomain_AE9D8D29FB4753AE52F93DF654E4A53D_default" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis_26A1245E9CBDFABAC35A3DF654E4F572" xlink:to="loc_us-gaap_AntidilutiveSecuritiesNameDomain_AE9D8D29FB4753AE52F93DF654E4A53D_default" xlink:type="arc"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis_26A1245E9CBDFABAC35A3DF654E4F572" xlink:to="loc_us-gaap_AntidilutiveSecuritiesNameDomain_AE9D8D29FB4753AE52F93DF654E4A53D" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EmployeeStockOptionMember" xlink:label="loc_us-gaap_EmployeeStockOptionMember_966B0031C3A30377DF3C3DF654E41904" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AntidilutiveSecuritiesNameDomain_AE9D8D29FB4753AE52F93DF654E4A53D" xlink:to="loc_us-gaap_EmployeeStockOptionMember_966B0031C3A30377DF3C3DF654E41904" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount" xlink:label="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount_0FDA48D90D9F72C66A6B3DF654E5B238" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems_EFC4596F503AFF761F043DF654E540FA" xlink:to="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount_0FDA48D90D9F72C66A6B3DF654E5B238" xlink:type="arc"/>

</link:definitionLink>

<link:definitionLink xlink:role="http://www.chevron.com/role/EarningsPerShareTables" xlink:type="extended"/>

<link:definitionLink xlink:role="http://www.chevron.com/role/EmployeeBenefitPlans" xlink:type="extended"/>

<link:definitionLink xlink:role="http://www.chevron.com/role/EmployeeBenefitPlansAccumulatedBenefitObligationInExcessOfPlanAssetsDetails" xlink:type="extended">

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:label="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_E47EF28AE6FA5ED41AAB7F3C5363F545" xlink:type="locator"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:label="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_3F9EACD7DD16CAF50D547F3C535CF72B" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_E47EF28AE6FA5ED41AAB7F3C5363F545" xlink:to="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_3F9EACD7DD16CAF50D547F3C535CF72B" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RetirementPlanTypeAxis" xlink:label="loc_us-gaap_RetirementPlanTypeAxis_1C8C7F68EE6FC5BDEAEA7F3C535CD40C" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_3F9EACD7DD16CAF50D547F3C535CF72B" xlink:to="loc_us-gaap_RetirementPlanTypeAxis_1C8C7F68EE6FC5BDEAEA7F3C535CD40C" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RetirementPlanTypeDomain" xlink:label="loc_us-gaap_RetirementPlanTypeDomain_CCC22EDCACD34EF5E5927F3C535C9A13_default" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RetirementPlanTypeAxis_1C8C7F68EE6FC5BDEAEA7F3C535CD40C" xlink:to="loc_us-gaap_RetirementPlanTypeDomain_CCC22EDCACD34EF5E5927F3C535C9A13_default" xlink:type="arc"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RetirementPlanTypeAxis_1C8C7F68EE6FC5BDEAEA7F3C535CD40C" xlink:to="loc_us-gaap_RetirementPlanTypeDomain_CCC22EDCACD34EF5E5927F3C535C9A13" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PensionPlansDefinedBenefitMember" xlink:label="loc_us-gaap_PensionPlansDefinedBenefitMember_CB2CCE13F972E995051D7F3C535D581D" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanTypeDomain_CCC22EDCACD34EF5E5927F3C535C9A13" xlink:to="loc_us-gaap_PensionPlansDefinedBenefitMember_CB2CCE13F972E995051D7F3C535D581D" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RetirementPlanSponsorLocationAxis" xlink:label="loc_us-gaap_RetirementPlanSponsorLocationAxis_233627ED58A3448C2D9C7F3C535D4599" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_3F9EACD7DD16CAF50D547F3C535CF72B" xlink:to="loc_us-gaap_RetirementPlanSponsorLocationAxis_233627ED58A3448C2D9C7F3C535D4599" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RetirementPlanSponsorLocationDomain" xlink:label="loc_us-gaap_RetirementPlanSponsorLocationDomain_3586C2266BFFEEA6C20A7F3C53634B68_default" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RetirementPlanSponsorLocationAxis_233627ED58A3448C2D9C7F3C535D4599" xlink:to="loc_us-gaap_RetirementPlanSponsorLocationDomain_3586C2266BFFEEA6C20A7F3C53634B68_default" xlink:type="arc"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RetirementPlanSponsorLocationAxis_233627ED58A3448C2D9C7F3C535D4599" xlink:to="loc_us-gaap_RetirementPlanSponsorLocationDomain_3586C2266BFFEEA6C20A7F3C53634B68" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.sec.gov/country/2017/country-2017-01-31.xsd#country_US" xlink:label="loc_country_US_CE78510B46A1DB4D9A067F3C5363B7B4" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanSponsorLocationDomain_3586C2266BFFEEA6C20A7F3C53634B68" xlink:to="loc_country_US_CE78510B46A1DB4D9A067F3C5363B7B4" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ForeignPlanMember" xlink:label="loc_us-gaap_ForeignPlanMember_D3364DA5F33FF476EE757F3C536339AB" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanSponsorLocationDomain_3586C2266BFFEEA6C20A7F3C53634B68" xlink:to="loc_us-gaap_ForeignPlanMember_D3364DA5F33FF476EE757F3C536339AB" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAbstract" xlink:label="loc_us-gaap_DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAbstract_CEEFD1962DBC89BD7BA07F3C5364F4E3" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_E47EF28AE6FA5ED41AAB7F3C5363F545" xlink:to="loc_us-gaap_DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAbstract_CEEFD1962DBC89BD7BA07F3C5364F4E3" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateProjectedBenefitObligation" xlink:label="loc_us-gaap_DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateProjectedBenefitObligation_E4E1EA88AFE0D1535A497F3C53645940" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAbstract_CEEFD1962DBC89BD7BA07F3C5364F4E3" xlink:to="loc_us-gaap_DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateProjectedBenefitObligation_E4E1EA88AFE0D1535A497F3C53645940" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateAccumulatedBenefitObligation" xlink:label="loc_us-gaap_DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateAccumulatedBenefitObligation_8A1DDDC81423C5431F5F7F3C536432F2" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAbstract_CEEFD1962DBC89BD7BA07F3C5364F4E3" xlink:to="loc_us-gaap_DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateAccumulatedBenefitObligation_8A1DDDC81423C5431F5F7F3C536432F2" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateFairValueOfPlanAssets" xlink:label="loc_us-gaap_DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateFairValueOfPlanAssets_5497FEF67D60CE0703337F3C5364EE65" xlink:type="locator"/>

<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAbstract_CEEFD1962DBC89BD7BA07F3C5364F4E3" xlink:to="loc_us-gaap_DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateFairValueOfPlanAssets_5497FEF67D60CE0703337F3C5364EE65" xlink:type="arc"/>

</link:definitionLink>

<link:definitionLink xlink:role="http://www.chevron.com/role/EmployeeBenefitPlansAmountsRecognizedInAccumulatedOtherComprehensiveLossDetails" xlink:type="extended">

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:label="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_2D8C60DB0DE3FD48B2607F3C537C3ED1" xlink:type="locator"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:label="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_5BA64C4367584C7767637F3C537A7AE0" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_2D8C60DB0DE3FD48B2607F3C537C3ED1" xlink:to="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_5BA64C4367584C7767637F3C537A7AE0" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RetirementPlanSponsorLocationAxis" xlink:label="loc_us-gaap_RetirementPlanSponsorLocationAxis_7BAB9682B4D565F3923B7F3C537A9699" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_5BA64C4367584C7767637F3C537A7AE0" xlink:to="loc_us-gaap_RetirementPlanSponsorLocationAxis_7BAB9682B4D565F3923B7F3C537A9699" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RetirementPlanSponsorLocationDomain" xlink:label="loc_us-gaap_RetirementPlanSponsorLocationDomain_5334E9777B267AF318A27F3C537B174D_default" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RetirementPlanSponsorLocationAxis_7BAB9682B4D565F3923B7F3C537A9699" xlink:to="loc_us-gaap_RetirementPlanSponsorLocationDomain_5334E9777B267AF318A27F3C537B174D_default" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RetirementPlanSponsorLocationDomain" xlink:label="loc_us-gaap_RetirementPlanSponsorLocationDomain_5334E9777B267AF318A27F3C537B174D" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RetirementPlanSponsorLocationAxis_7BAB9682B4D565F3923B7F3C537A9699" xlink:to="loc_us-gaap_RetirementPlanSponsorLocationDomain_5334E9777B267AF318A27F3C537B174D" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.sec.gov/country/2017/country-2017-01-31.xsd#country_US" xlink:label="loc_country_US_0925F2A2640FE8EB285E7F3C537B082A" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanSponsorLocationDomain_5334E9777B267AF318A27F3C537B174D" xlink:to="loc_country_US_0925F2A2640FE8EB285E7F3C537B082A" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ForeignPlanMember" xlink:label="loc_us-gaap_ForeignPlanMember_7DAE7404A702A5F559D17F3C537BF72E" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanSponsorLocationDomain_5334E9777B267AF318A27F3C537B174D" xlink:to="loc_us-gaap_ForeignPlanMember_7DAE7404A702A5F559D17F3C537BF72E" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RetirementPlanTypeAxis" xlink:label="loc_us-gaap_RetirementPlanTypeAxis_33DDD81D0701D64770677F3C537BC315" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_5BA64C4367584C7767637F3C537A7AE0" xlink:to="loc_us-gaap_RetirementPlanTypeAxis_33DDD81D0701D64770677F3C537BC315" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RetirementPlanTypeDomain" xlink:label="loc_us-gaap_RetirementPlanTypeDomain_7A86D5847F5987BDA67C7F3C537C11D7_default" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RetirementPlanTypeAxis_33DDD81D0701D64770677F3C537BC315" xlink:to="loc_us-gaap_RetirementPlanTypeDomain_7A86D5847F5987BDA67C7F3C537C11D7_default" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RetirementPlanTypeDomain" xlink:label="loc_us-gaap_RetirementPlanTypeDomain_7A86D5847F5987BDA67C7F3C537C11D7" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RetirementPlanTypeAxis_33DDD81D0701D64770677F3C537BC315" xlink:to="loc_us-gaap_RetirementPlanTypeDomain_7A86D5847F5987BDA67C7F3C537C11D7" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PensionPlansDefinedBenefitMember" xlink:label="loc_us-gaap_PensionPlansDefinedBenefitMember_BBA436AAE64001DCBE637F3C537CAB0F" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanTypeDomain_7A86D5847F5987BDA67C7F3C537C11D7" xlink:to="loc_us-gaap_PensionPlansDefinedBenefitMember_BBA436AAE64001DCBE637F3C537CAB0F" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember" xlink:label="loc_us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember_4A02F0D9A0A783802AB67F3C537C04E2" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanTypeDomain_7A86D5847F5987BDA67C7F3C537C11D7" xlink:to="loc_us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember_4A02F0D9A0A783802AB67F3C537C04E2" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTaxAbstract" xlink:label="loc_us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTaxAbstract_ECCF5C28944C86FC6BA67F3C537D492D" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_2D8C60DB0DE3FD48B2607F3C537C3ED1" xlink:to="loc_us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTaxAbstract_ECCF5C28944C86FC6BA67F3C537D492D" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetGainsLossesBeforeTax" xlink:label="loc_us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetGainsLossesBeforeTax_C3161DF236021D9200697F3C537D0578" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTaxAbstract_ECCF5C28944C86FC6BA67F3C537D492D" xlink:to="loc_us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetGainsLossesBeforeTax_C3161DF236021D9200697F3C537D0578" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetPriorServiceCostCreditBeforeTax" xlink:label="loc_us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetPriorServiceCostCreditBeforeTax_93EF4356C249DA0618B07F3C537D57EA" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTaxAbstract_ECCF5C28944C86FC6BA67F3C537D492D" xlink:to="loc_us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetPriorServiceCostCreditBeforeTax_93EF4356C249DA0618B07F3C537D57EA" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTax" xlink:label="loc_us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTax_7274632254A705DD95667F3C537DCA7A" xlink:type="locator"/>

<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTaxAbstract_ECCF5C28944C86FC6BA67F3C537D492D" xlink:to="loc_us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTax_7274632254A705DD95667F3C537DCA7A" xlink:type="arc"/>

</link:definitionLink>

<link:definitionLink xlink:role="http://www.chevron.com/role/EmployeeBenefitPlansAssumptionsDetails" xlink:type="extended">

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:label="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_E749D00729D9743324187F3C53133641" xlink:type="locator"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:label="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_5D72F7CA7A6A76BF03487F3C53105D64" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_E749D00729D9743324187F3C53133641" xlink:to="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_5D72F7CA7A6A76BF03487F3C53105D64" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RetirementPlanSponsorLocationAxis" xlink:label="loc_us-gaap_RetirementPlanSponsorLocationAxis_B835491F9DD2B4AE66847F3C53118305" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_5D72F7CA7A6A76BF03487F3C53105D64" xlink:to="loc_us-gaap_RetirementPlanSponsorLocationAxis_B835491F9DD2B4AE66847F3C53118305" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RetirementPlanSponsorLocationDomain" xlink:label="loc_us-gaap_RetirementPlanSponsorLocationDomain_1DA9ABFD4BA02E3FA4E97F3C5311122C_default" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RetirementPlanSponsorLocationAxis_B835491F9DD2B4AE66847F3C53118305" xlink:to="loc_us-gaap_RetirementPlanSponsorLocationDomain_1DA9ABFD4BA02E3FA4E97F3C5311122C_default" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RetirementPlanSponsorLocationDomain" xlink:label="loc_us-gaap_RetirementPlanSponsorLocationDomain_1DA9ABFD4BA02E3FA4E97F3C5311122C" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RetirementPlanSponsorLocationAxis_B835491F9DD2B4AE66847F3C53118305" xlink:to="loc_us-gaap_RetirementPlanSponsorLocationDomain_1DA9ABFD4BA02E3FA4E97F3C5311122C" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.sec.gov/country/2017/country-2017-01-31.xsd#country_US" xlink:label="loc_country_US_B44FBC6E3ED16579A1417F3C53118B30" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanSponsorLocationDomain_1DA9ABFD4BA02E3FA4E97F3C5311122C" xlink:to="loc_country_US_B44FBC6E3ED16579A1417F3C53118B30" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ForeignPlanMember" xlink:label="loc_us-gaap_ForeignPlanMember_83827743A790C32BDFDE7F3C531275E8" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanSponsorLocationDomain_1DA9ABFD4BA02E3FA4E97F3C5311122C" xlink:to="loc_us-gaap_ForeignPlanMember_83827743A790C32BDFDE7F3C531275E8" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RetirementPlanTypeAxis" xlink:label="loc_us-gaap_RetirementPlanTypeAxis_95F660676E7B4E020E8E7F3C5312CA0E" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_5D72F7CA7A6A76BF03487F3C53105D64" xlink:to="loc_us-gaap_RetirementPlanTypeAxis_95F660676E7B4E020E8E7F3C5312CA0E" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RetirementPlanTypeDomain" xlink:label="loc_us-gaap_RetirementPlanTypeDomain_7D3BC7B95A46CF20BC267F3C53128506_default" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RetirementPlanTypeAxis_95F660676E7B4E020E8E7F3C5312CA0E" xlink:to="loc_us-gaap_RetirementPlanTypeDomain_7D3BC7B95A46CF20BC267F3C53128506_default" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RetirementPlanTypeDomain" xlink:label="loc_us-gaap_RetirementPlanTypeDomain_7D3BC7B95A46CF20BC267F3C53128506" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RetirementPlanTypeAxis_95F660676E7B4E020E8E7F3C5312CA0E" xlink:to="loc_us-gaap_RetirementPlanTypeDomain_7D3BC7B95A46CF20BC267F3C53128506" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PensionPlansDefinedBenefitMember" xlink:label="loc_us-gaap_PensionPlansDefinedBenefitMember_975FCCF69D9478FE129A7F3C53123DDA" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanTypeDomain_7D3BC7B95A46CF20BC267F3C53128506" xlink:to="loc_us-gaap_PensionPlansDefinedBenefitMember_975FCCF69D9478FE129A7F3C53123DDA" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember" xlink:label="loc_us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember_B3E6A0279F806BF864247F3C5312ECA9" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanTypeDomain_7D3BC7B95A46CF20BC267F3C53128506" xlink:to="loc_us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember_B3E6A0279F806BF864247F3C5312ECA9" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanWeightedAverageAssumptionsUsedInCalculatingBenefitObligationAbstract" xlink:label="loc_us-gaap_DefinedBenefitPlanWeightedAverageAssumptionsUsedInCalculatingBenefitObligationAbstract_2CD02A41231955084BC57F3C5313977D" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_E749D00729D9743324187F3C53133641" xlink:to="loc_us-gaap_DefinedBenefitPlanWeightedAverageAssumptionsUsedInCalculatingBenefitObligationAbstract_2CD02A41231955084BC57F3C5313977D" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanAssumptionsUsedInCalculationsAbstract" xlink:label="loc_us-gaap_DefinedBenefitPlanAssumptionsUsedInCalculationsAbstract_F4E1DC4700B10CCA1C0F7F3C5313B939" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanWeightedAverageAssumptionsUsedInCalculatingBenefitObligationAbstract_2CD02A41231955084BC57F3C5313977D" xlink:to="loc_us-gaap_DefinedBenefitPlanAssumptionsUsedInCalculationsAbstract_F4E1DC4700B10CCA1C0F7F3C5313B939" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate" xlink:label="loc_us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate_E81887CF7A737098ED377F3C5319E21C" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanAssumptionsUsedInCalculationsAbstract_F4E1DC4700B10CCA1C0F7F3C5313B939" xlink:to="loc_us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate_E81887CF7A737098ED377F3C5319E21C" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationRateOfCompensationIncrease" xlink:label="loc_us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationRateOfCompensationIncrease_3BF4A7692F14754B43DE7F3C5319E84B" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanAssumptionsUsedInCalculationsAbstract_F4E1DC4700B10CCA1C0F7F3C5313B939" xlink:to="loc_us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationRateOfCompensationIncrease_3BF4A7692F14754B43DE7F3C5319E84B" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanWeightedAverageAssumptionsUsedInCalculatingNetPeriodicBenefitCostAbstract" xlink:label="loc_us-gaap_DefinedBenefitPlanWeightedAverageAssumptionsUsedInCalculatingNetPeriodicBenefitCostAbstract_1A3DD1011DA0083885EE7F3C53191634" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanWeightedAverageAssumptionsUsedInCalculatingBenefitObligationAbstract_2CD02A41231955084BC57F3C5313977D" xlink:to="loc_us-gaap_DefinedBenefitPlanWeightedAverageAssumptionsUsedInCalculatingNetPeriodicBenefitCostAbstract_1A3DD1011DA0083885EE7F3C53191634" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRateforServiceCost" xlink:label="loc_cvx_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRateforServiceCost_C20C4B5411D14CFA6B737F3C531984E3" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanWeightedAverageAssumptionsUsedInCalculatingNetPeriodicBenefitCostAbstract_1A3DD1011DA0083885EE7F3C53191634" xlink:to="loc_cvx_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRateforServiceCost_C20C4B5411D14CFA6B737F3C531984E3" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRateforInterestCost" xlink:label="loc_cvx_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRateforInterestCost_0C969DD1E6DDD19D18DF7F3C531A6C5B" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanWeightedAverageAssumptionsUsedInCalculatingNetPeriodicBenefitCostAbstract_1A3DD1011DA0083885EE7F3C53191634" xlink:to="loc_cvx_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRateforInterestCost_0C969DD1E6DDD19D18DF7F3C531A6C5B" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets" xlink:label="loc_us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets_32E0041A27E9C4FE6D887F3C531AB3BB" xlink:type="locator"/>

<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanWeightedAverageAssumptionsUsedInCalculatingNetPeriodicBenefitCostAbstract_1A3DD1011DA0083885EE7F3C53191634" xlink:to="loc_us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets_32E0041A27E9C4FE6D887F3C531AB3BB" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostRateOfCompensationIncrease" xlink:label="loc_us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostRateOfCompensationIncrease_53344AEAD8385331C8F27F3C531AE21D" xlink:type="locator"/>

<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanWeightedAverageAssumptionsUsedInCalculatingNetPeriodicBenefitCostAbstract_1A3DD1011DA0083885EE7F3C53191634" xlink:to="loc_us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostRateOfCompensationIncrease_53344AEAD8385331C8F27F3C531AE21D" xlink:type="arc"/>

</link:definitionLink>

<link:definitionLink xlink:role="http://www.chevron.com/role/EmployeeBenefitPlansExecpectedBenefitPaymentsDetails" xlink:type="extended">

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:label="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_86CFC71B6F75DB9FE4EE9A45785F1ADA" xlink:type="locator"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:label="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_B3791366F870CC1EDA3F9A45785FF5BE" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_86CFC71B6F75DB9FE4EE9A45785F1ADA" xlink:to="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_B3791366F870CC1EDA3F9A45785FF5BE" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RetirementPlanSponsorLocationAxis" xlink:label="loc_us-gaap_RetirementPlanSponsorLocationAxis_651B5EFB1CD0AA2403A39A45785F6D58" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_B3791366F870CC1EDA3F9A45785FF5BE" xlink:to="loc_us-gaap_RetirementPlanSponsorLocationAxis_651B5EFB1CD0AA2403A39A45785F6D58" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RetirementPlanSponsorLocationDomain" xlink:label="loc_us-gaap_RetirementPlanSponsorLocationDomain_DBBDBDD4EBA9F229C9699A45785F79F3_default" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RetirementPlanSponsorLocationAxis_651B5EFB1CD0AA2403A39A45785F6D58" xlink:to="loc_us-gaap_RetirementPlanSponsorLocationDomain_DBBDBDD4EBA9F229C9699A45785F79F3_default" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RetirementPlanSponsorLocationDomain" xlink:label="loc_us-gaap_RetirementPlanSponsorLocationDomain_DBBDBDD4EBA9F229C9699A45785F79F3" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RetirementPlanSponsorLocationAxis_651B5EFB1CD0AA2403A39A45785F6D58" xlink:to="loc_us-gaap_RetirementPlanSponsorLocationDomain_DBBDBDD4EBA9F229C9699A45785F79F3" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.sec.gov/country/2017/country-2017-01-31.xsd#country_US" xlink:label="loc_country_US_85A31BF18D4E2E898D699A45785FBFB1" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanSponsorLocationDomain_DBBDBDD4EBA9F229C9699A45785F79F3" xlink:to="loc_country_US_85A31BF18D4E2E898D699A45785FBFB1" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ForeignPlanMember" xlink:label="loc_us-gaap_ForeignPlanMember_B39FB7FE0ABED11453369A45785F667D" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanSponsorLocationDomain_DBBDBDD4EBA9F229C9699A45785F79F3" xlink:to="loc_us-gaap_ForeignPlanMember_B39FB7FE0ABED11453369A45785F667D" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RetirementPlanTypeAxis" xlink:label="loc_us-gaap_RetirementPlanTypeAxis_41BC5673FCD5B56BC7D99A45785F2A92" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_B3791366F870CC1EDA3F9A45785FF5BE" xlink:to="loc_us-gaap_RetirementPlanTypeAxis_41BC5673FCD5B56BC7D99A45785F2A92" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RetirementPlanTypeDomain" xlink:label="loc_us-gaap_RetirementPlanTypeDomain_1DB913906D26AB0254169A45785FAF3A_default" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RetirementPlanTypeAxis_41BC5673FCD5B56BC7D99A45785F2A92" xlink:to="loc_us-gaap_RetirementPlanTypeDomain_1DB913906D26AB0254169A45785FAF3A_default" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RetirementPlanTypeDomain" xlink:label="loc_us-gaap_RetirementPlanTypeDomain_1DB913906D26AB0254169A45785FAF3A" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RetirementPlanTypeAxis_41BC5673FCD5B56BC7D99A45785F2A92" xlink:to="loc_us-gaap_RetirementPlanTypeDomain_1DB913906D26AB0254169A45785FAF3A" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember" xlink:label="loc_us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember_C6F0AFDE461A7739B9B39A45785F4A2C" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanTypeDomain_1DB913906D26AB0254169A45785FAF3A" xlink:to="loc_us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember_C6F0AFDE461A7739B9B39A45785F4A2C" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PensionPlansDefinedBenefitMember" xlink:label="loc_us-gaap_PensionPlansDefinedBenefitMember_D83C5ACE1AB7E44E5F359A45785FFA29" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanTypeDomain_1DB913906D26AB0254169A45785FAF3A" xlink:to="loc_us-gaap_PensionPlansDefinedBenefitMember_D83C5ACE1AB7E44E5F359A45785FFA29" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanEstimatedFutureBenefitPaymentsAbstract" xlink:label="loc_us-gaap_DefinedBenefitPlanEstimatedFutureBenefitPaymentsAbstract_6117829685EDB501D71B9A45785F28FB" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_86CFC71B6F75DB9FE4EE9A45785F1ADA" xlink:to="loc_us-gaap_DefinedBenefitPlanEstimatedFutureBenefitPaymentsAbstract_6117829685EDB501D71B9A45785F28FB" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths" xlink:label="loc_us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths_908B661F03FE924AA52B9A45785F9B73" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanEstimatedFutureBenefitPaymentsAbstract_6117829685EDB501D71B9A45785F28FB" xlink:to="loc_us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths_908B661F03FE924AA52B9A45785F9B73" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo" xlink:label="loc_us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo_1C89735BD174F0900F129A45785FC67B" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanEstimatedFutureBenefitPaymentsAbstract_6117829685EDB501D71B9A45785F28FB" xlink:to="loc_us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo_1C89735BD174F0900F129A45785FC67B" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree" xlink:label="loc_us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree_783EBE6E5573DB3ED8B39A45785F52D9" xlink:type="locator"/>

<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanEstimatedFutureBenefitPaymentsAbstract_6117829685EDB501D71B9A45785F28FB" xlink:to="loc_us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree_783EBE6E5573DB3ED8B39A45785F52D9" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour" xlink:label="loc_us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour_AE174CE5F5C4F68F66A19A45785F6437" xlink:type="locator"/>

<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanEstimatedFutureBenefitPaymentsAbstract_6117829685EDB501D71B9A45785F28FB" xlink:to="loc_us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour_AE174CE5F5C4F68F66A19A45785F6437" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive" xlink:label="loc_us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive_1EE93FEC5D3F4D50C78D9A45785FDB5B" xlink:type="locator"/>

<link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanEstimatedFutureBenefitPaymentsAbstract_6117829685EDB501D71B9A45785F28FB" xlink:to="loc_us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive_1EE93FEC5D3F4D50C78D9A45785FDB5B" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter" xlink:label="loc_us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter_1FE0438D2EBA9EDED6789A45785FD4BB" xlink:type="locator"/>

<link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanEstimatedFutureBenefitPaymentsAbstract_6117829685EDB501D71B9A45785F28FB" xlink:to="loc_us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter_1FE0438D2EBA9EDED6789A45785FD4BB" xlink:type="arc"/>

</link:definitionLink>

<link:definitionLink xlink:role="http://www.chevron.com/role/EmployeeBenefitPlansNarrativeDetails" xlink:type="extended">

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:label="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_2C72796EADC2CCA0828E08A873715DEF" xlink:type="locator"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:label="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_7547906E05122ED673B508A8736F1A08" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_2C72796EADC2CCA0828E08A873715DEF" xlink:to="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_7547906E05122ED673B508A8736F1A08" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RetirementPlanSponsorLocationAxis" xlink:label="loc_us-gaap_RetirementPlanSponsorLocationAxis_8A36C8FFFC18BCF63C3E08A8736FCE50" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_7547906E05122ED673B508A8736F1A08" xlink:to="loc_us-gaap_RetirementPlanSponsorLocationAxis_8A36C8FFFC18BCF63C3E08A8736FCE50" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RetirementPlanSponsorLocationDomain" xlink:label="loc_us-gaap_RetirementPlanSponsorLocationDomain_EC19EA4FB86945D7DF1508A8736F3ACB_default" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RetirementPlanSponsorLocationAxis_8A36C8FFFC18BCF63C3E08A8736FCE50" xlink:to="loc_us-gaap_RetirementPlanSponsorLocationDomain_EC19EA4FB86945D7DF1508A8736F3ACB_default" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RetirementPlanSponsorLocationDomain" xlink:label="loc_us-gaap_RetirementPlanSponsorLocationDomain_EC19EA4FB86945D7DF1508A8736F3ACB" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RetirementPlanSponsorLocationAxis_8A36C8FFFC18BCF63C3E08A8736FCE50" xlink:to="loc_us-gaap_RetirementPlanSponsorLocationDomain_EC19EA4FB86945D7DF1508A8736F3ACB" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.sec.gov/country/2017/country-2017-01-31.xsd#country_US" xlink:label="loc_country_US_CEEF744C332AA937C3A308A8736FEA03" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanSponsorLocationDomain_EC19EA4FB86945D7DF1508A8736F3ACB" xlink:to="loc_country_US_CEEF744C332AA937C3A308A8736FEA03" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ForeignPlanMember" xlink:label="loc_us-gaap_ForeignPlanMember_C234D27DE2F24031324308A8736F98BE" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanSponsorLocationDomain_EC19EA4FB86945D7DF1508A8736F3ACB" xlink:to="loc_us-gaap_ForeignPlanMember_C234D27DE2F24031324308A8736F98BE" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.sec.gov/country/2017/country-2017-01-31.xsd#country_GB" xlink:label="loc_country_GB_AAAC55FBB2E92F032E5E08A8736FE264" xlink:type="locator"/>

<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanSponsorLocationDomain_EC19EA4FB86945D7DF1508A8736F3ACB" xlink:to="loc_country_GB_AAAC55FBB2E92F032E5E08A8736FE264" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RetirementPlanTypeAxis" xlink:label="loc_us-gaap_RetirementPlanTypeAxis_B83FBF4A3CE7BB7DA33B08A8736FE102" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_7547906E05122ED673B508A8736F1A08" xlink:to="loc_us-gaap_RetirementPlanTypeAxis_B83FBF4A3CE7BB7DA33B08A8736FE102" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RetirementPlanTypeDomain" xlink:label="loc_us-gaap_RetirementPlanTypeDomain_4D41F4F6F2C8F6FE6E8808A8736F9D90_default" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RetirementPlanTypeAxis_B83FBF4A3CE7BB7DA33B08A8736FE102" xlink:to="loc_us-gaap_RetirementPlanTypeDomain_4D41F4F6F2C8F6FE6E8808A8736F9D90_default" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RetirementPlanTypeDomain" xlink:label="loc_us-gaap_RetirementPlanTypeDomain_4D41F4F6F2C8F6FE6E8808A8736F9D90" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RetirementPlanTypeAxis_B83FBF4A3CE7BB7DA33B08A8736FE102" xlink:to="loc_us-gaap_RetirementPlanTypeDomain_4D41F4F6F2C8F6FE6E8808A8736F9D90" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PensionPlansDefinedBenefitMember" xlink:label="loc_us-gaap_PensionPlansDefinedBenefitMember_6FF30DBE60559A1B2ED208A8736F6DF8" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanTypeDomain_4D41F4F6F2C8F6FE6E8808A8736F9D90" xlink:to="loc_us-gaap_PensionPlansDefinedBenefitMember_6FF30DBE60559A1B2ED208A8736F6DF8" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember" xlink:label="loc_us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember_D73421C4A75C21E3CAF408A87370F88F" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanTypeDomain_4D41F4F6F2C8F6FE6E8808A8736F9D90" xlink:to="loc_us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember_D73421C4A75C21E3CAF408A87370F88F" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherPensionPlansDefinedBenefitMember" xlink:label="loc_us-gaap_OtherPensionPlansDefinedBenefitMember_21DDAA27D31E946125EA08A873708915" xlink:type="locator"/>

<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanTypeDomain_4D41F4F6F2C8F6FE6E8808A8736F9D90" xlink:to="loc_us-gaap_OtherPensionPlansDefinedBenefitMember_21DDAA27D31E946125EA08A873708915" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis" xlink:label="loc_us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis_BC1F7115F92402E6CE7008A87370AA4F" xlink:type="locator"/>

<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_7547906E05122ED673B508A8736F1A08" xlink:to="loc_us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis_BC1F7115F92402E6CE7008A87370AA4F" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PlanAssetCategoriesDomain" xlink:label="loc_us-gaap_PlanAssetCategoriesDomain_3A0109F500B3ACC89C1208A873706E53_default" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis_BC1F7115F92402E6CE7008A87370AA4F" xlink:to="loc_us-gaap_PlanAssetCategoriesDomain_3A0109F500B3ACC89C1208A873706E53_default" xlink:type="arc"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis_BC1F7115F92402E6CE7008A87370AA4F" xlink:to="loc_us-gaap_PlanAssetCategoriesDomain_3A0109F500B3ACC89C1208A873706E53" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EquitySecuritiesMember" xlink:label="loc_us-gaap_EquitySecuritiesMember_06DDB54C895CAD963FE708A87370F3E5" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_3A0109F500B3ACC89C1208A873706E53" xlink:to="loc_us-gaap_EquitySecuritiesMember_06DDB54C895CAD963FE708A87370F3E5" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_FixedIncomeAndCashAndCashEquivalentsMember" xlink:label="loc_cvx_FixedIncomeAndCashAndCashEquivalentsMember_A8D59B30F5D50FD516D008A87370CF69" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_3A0109F500B3ACC89C1208A873706E53" xlink:to="loc_cvx_FixedIncomeAndCashAndCashEquivalentsMember_A8D59B30F5D50FD516D008A87370CF69" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RealEstateMember" xlink:label="loc_us-gaap_RealEstateMember_2EC47976B7F95255077208A87370DABD" xlink:type="locator"/>

<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_3A0109F500B3ACC89C1208A873706E53" xlink:to="loc_us-gaap_RealEstateMember_2EC47976B7F95255077208A87370DABD" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_OtherPlanAssetsMember" xlink:label="loc_cvx_OtherPlanAssetsMember_A5FEF14DEC52E688ACD908A873705958" xlink:type="locator"/>

<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_3A0109F500B3ACC89C1208A873706E53" xlink:to="loc_cvx_OtherPlanAssetsMember_A5FEF14DEC52E688ACD908A873705958" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_StatementGeographicalAxis" xlink:label="loc_srt_StatementGeographicalAxis_B24BBC2C60BEF08689C508A87370B892" xlink:type="locator"/>

<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_7547906E05122ED673B508A8736F1A08" xlink:to="loc_srt_StatementGeographicalAxis_B24BBC2C60BEF08689C508A87370B892" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_SegmentGeographicalDomain" xlink:label="loc_srt_SegmentGeographicalDomain_8ADD82696A4E218C85A108A873712727_default" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_StatementGeographicalAxis_B24BBC2C60BEF08689C508A87370B892" xlink:to="loc_srt_SegmentGeographicalDomain_8ADD82696A4E218C85A108A873712727_default" xlink:type="arc"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_StatementGeographicalAxis_B24BBC2C60BEF08689C508A87370B892" xlink:to="loc_srt_SegmentGeographicalDomain_8ADD82696A4E218C85A108A873712727" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_RangeAxis" xlink:label="loc_srt_RangeAxis_1FB70B9530C115E75CC708A8737171AF" xlink:type="locator"/>

<link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_7547906E05122ED673B508A8736F1A08" xlink:to="loc_srt_RangeAxis_1FB70B9530C115E75CC708A8737171AF" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_RangeMember" xlink:label="loc_srt_RangeMember_EC7BB2A1E4FB360D12D208A87371D1B3_default" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_1FB70B9530C115E75CC708A8737171AF" xlink:to="loc_srt_RangeMember_EC7BB2A1E4FB360D12D208A87371D1B3_default" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_RangeMember" xlink:label="loc_srt_RangeMember_EC7BB2A1E4FB360D12D208A87371D1B3" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_1FB70B9530C115E75CC708A8737171AF" xlink:to="loc_srt_RangeMember_EC7BB2A1E4FB360D12D208A87371D1B3" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_MinimumMember" xlink:label="loc_srt_MinimumMember_C97373AB6CEA816090D308A87371FD89" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_EC7BB2A1E4FB360D12D208A87371D1B3" xlink:to="loc_srt_MinimumMember_C97373AB6CEA816090D308A87371FD89" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_MaximumMember" xlink:label="loc_srt_MaximumMember_C97A600D71E65EDEB6C108A873717241" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_EC7BB2A1E4FB360D12D208A87371D1B3" xlink:to="loc_srt_MaximumMember_C97A600D71E65EDEB6C108A873717241" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_MaximumAnnualIncreasePercentageToCompanyContributionForRetireeMedicalCoverage" xlink:label="loc_cvx_MaximumAnnualIncreasePercentageToCompanyContributionForRetireeMedicalCoverage_691C6A977C7E90AB1DAC08A87371B361" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_2C72796EADC2CCA0828E08A873715DEF" xlink:to="loc_cvx_MaximumAnnualIncreasePercentageToCompanyContributionForRetireeMedicalCoverage_691C6A977C7E90AB1DAC08A87371B361" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanFundedStatusOfPlanAbstract" xlink:label="loc_us-gaap_DefinedBenefitPlanFundedStatusOfPlanAbstract_6F64F2D718609CB4E68108A87371BFDD" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_2C72796EADC2CCA0828E08A873715DEF" xlink:to="loc_us-gaap_DefinedBenefitPlanFundedStatusOfPlanAbstract_6F64F2D718609CB4E68108A87371BFDD" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTax" xlink:label="loc_us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTax_51DE8AEA5D592026631808A873727967" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanFundedStatusOfPlanAbstract_6F64F2D718609CB4E68108A87371BFDD" xlink:to="loc_us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTax_51DE8AEA5D592026631808A873727967" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanAccumulatedBenefitObligation" xlink:label="loc_us-gaap_DefinedBenefitPlanAccumulatedBenefitObligation_DE1132CBC9C5AA17E04D08A873725B9F" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanFundedStatusOfPlanAbstract_6F64F2D718609CB4E68108A87371BFDD" xlink:to="loc_us-gaap_DefinedBenefitPlanAccumulatedBenefitObligation_DE1132CBC9C5AA17E04D08A873725B9F" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_DefinedBenefitPlanNetActuarialGainLossAbstract" xlink:label="loc_cvx_DefinedBenefitPlanNetActuarialGainLossAbstract_D40A839BB6359682B25108A87372933E" xlink:type="locator"/>

<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_2C72796EADC2CCA0828E08A873715DEF" xlink:to="loc_cvx_DefinedBenefitPlanNetActuarialGainLossAbstract_D40A839BB6359682B25108A87372933E" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_NumberOfYearsNetActuarialLossesRecordedInAccumulatedOtherComprehensiveLossForCompanysDomesticPensionPlansAreBeingAmortizedForOverStraightLineBasis" xlink:label="loc_cvx_NumberOfYearsNetActuarialLossesRecordedInAccumulatedOtherComprehensiveLossForCompanysDomesticPensionPlansAreBeingAmortizedForOverStraightLineBasis_BCBB18455C5F1FDDAB8B08A873726436" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_cvx_DefinedBenefitPlanNetActuarialGainLossAbstract_D40A839BB6359682B25108A87372933E" xlink:to="loc_cvx_NumberOfYearsNetActuarialLossesRecordedInAccumulatedOtherComprehensiveLossForCompanysDomesticPensionPlansAreBeingAmortizedForOverStraightLineBasis_BCBB18455C5F1FDDAB8B08A873726436" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_NumberOfYearsNetActuarialLossesRecordedInAccumulatedOtherComprehensiveLossForCompanysInternationalPensionPlansAreBeingAmortizedForOverStraightLineBasis" xlink:label="loc_cvx_NumberOfYearsNetActuarialLossesRecordedInAccumulatedOtherComprehensiveLossForCompanysInternationalPensionPlansAreBeingAmortizedForOverStraightLineBasis_47B1B87B88829DE0C79608A87372A2DB" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_cvx_DefinedBenefitPlanNetActuarialGainLossAbstract_D40A839BB6359682B25108A87372933E" xlink:to="loc_cvx_NumberOfYearsNetActuarialLossesRecordedInAccumulatedOtherComprehensiveLossForCompanysInternationalPensionPlansAreBeingAmortizedForOverStraightLineBasis_47B1B87B88829DE0C79608A87372A2DB" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_NumberOfYearsNetActuarialLossesRecordedInAccumulatedOtherComprehensiveLossForCompanysOpebPlansAreBeingAmortizedForOverStraightLineBasis" xlink:label="loc_cvx_NumberOfYearsNetActuarialLossesRecordedInAccumulatedOtherComprehensiveLossForCompanysOpebPlansAreBeingAmortizedForOverStraightLineBasis_EE01BEB02395B670A99708A87372C209" xlink:type="locator"/>

<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_cvx_DefinedBenefitPlanNetActuarialGainLossAbstract_D40A839BB6359682B25108A87372933E" xlink:to="loc_cvx_NumberOfYearsNetActuarialLossesRecordedInAccumulatedOtherComprehensiveLossForCompanysOpebPlansAreBeingAmortizedForOverStraightLineBasis_EE01BEB02395B670A99708A87372C209" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_HigherPercentageOfProjectedBenefitObligationOrMarketRelatedValueOfPlanAssetsOfWhichLossesAreAmortized" xlink:label="loc_cvx_HigherPercentageOfProjectedBenefitObligationOrMarketRelatedValueOfPlanAssetsOfWhichLossesAreAmortized_50DADE5AA81CB013C36C08A87372E6D0" xlink:type="locator"/>

<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_cvx_DefinedBenefitPlanNetActuarialGainLossAbstract_D40A839BB6359682B25108A87372933E" xlink:to="loc_cvx_HigherPercentageOfProjectedBenefitObligationOrMarketRelatedValueOfPlanAssetsOfWhichLossesAreAmortized_50DADE5AA81CB013C36C08A87372E6D0" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanExpectedAmortizationOfGainLossNextFiscalYear" xlink:label="loc_us-gaap_DefinedBenefitPlanExpectedAmortizationOfGainLossNextFiscalYear_9B64E4B1EAB6F0F6D1AA08A8737218CC" xlink:type="locator"/>

<link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_cvx_DefinedBenefitPlanNetActuarialGainLossAbstract_D40A839BB6359682B25108A87372933E" xlink:to="loc_us-gaap_DefinedBenefitPlanExpectedAmortizationOfGainLossNextFiscalYear_9B64E4B1EAB6F0F6D1AA08A8737218CC" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_CompanysEstimatedAmountThatWillBeRecognizedFromAccumulatedOtherComprehensiveLossDuringNextYearRelatedToLumpSumSettlementCostsFromDomesticPensionPlans" xlink:label="loc_cvx_CompanysEstimatedAmountThatWillBeRecognizedFromAccumulatedOtherComprehensiveLossDuringNextYearRelatedToLumpSumSettlementCostsFromDomesticPensionPlans_C2EF8835D66599530D8C08A8737220D6" xlink:type="locator"/>

<link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_cvx_DefinedBenefitPlanNetActuarialGainLossAbstract_D40A839BB6359682B25108A87372933E" xlink:to="loc_cvx_CompanysEstimatedAmountThatWillBeRecognizedFromAccumulatedOtherComprehensiveLossDuringNextYearRelatedToLumpSumSettlementCostsFromDomesticPensionPlans_C2EF8835D66599530D8C08A8737220D6" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_WeightedAverageAmortizationPeriodInYearsForRecognizingPriorServiceCostsCreditsRecordedInAccumulatedOtherComprehensiveLossForDomesticPensionPlan" xlink:label="loc_cvx_WeightedAverageAmortizationPeriodInYearsForRecognizingPriorServiceCostsCreditsRecordedInAccumulatedOtherComprehensiveLossForDomesticPensionPlan_CD18E3F418E48F4F2A7F08A873723548" xlink:type="locator"/>

<link:definitionArc order="7" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_cvx_DefinedBenefitPlanNetActuarialGainLossAbstract_D40A839BB6359682B25108A87372933E" xlink:to="loc_cvx_WeightedAverageAmortizationPeriodInYearsForRecognizingPriorServiceCostsCreditsRecordedInAccumulatedOtherComprehensiveLossForDomesticPensionPlan_CD18E3F418E48F4F2A7F08A873723548" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_WeightedAverageAmortizationPeriodInYearsForRecognizingPriorServiceCostsCreditsRecordedInAccumulatedOtherComprehensiveLossForInternationalPensionPlan" xlink:label="loc_cvx_WeightedAverageAmortizationPeriodInYearsForRecognizingPriorServiceCostsCreditsRecordedInAccumulatedOtherComprehensiveLossForInternationalPensionPlan_76CBA02651C03FCA3AB008A873725256" xlink:type="locator"/>

<link:definitionArc order="8" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_cvx_DefinedBenefitPlanNetActuarialGainLossAbstract_D40A839BB6359682B25108A87372933E" xlink:to="loc_cvx_WeightedAverageAmortizationPeriodInYearsForRecognizingPriorServiceCostsCreditsRecordedInAccumulatedOtherComprehensiveLossForInternationalPensionPlan_76CBA02651C03FCA3AB008A873725256" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_WeightedAverageAmortizationPeriodInYearsForRecognizingPriorServiceCostsCreditsRecordedInAccumulatedOtherComprehensiveLossForOtherPostretirementBenefitPlan" xlink:label="loc_cvx_WeightedAverageAmortizationPeriodInYearsForRecognizingPriorServiceCostsCreditsRecordedInAccumulatedOtherComprehensiveLossForOtherPostretirementBenefitPlan_F2E00F78A46F318521B308A8737289A0" xlink:type="locator"/>

<link:definitionArc order="9" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_cvx_DefinedBenefitPlanNetActuarialGainLossAbstract_D40A839BB6359682B25108A87372933E" xlink:to="loc_cvx_WeightedAverageAmortizationPeriodInYearsForRecognizingPriorServiceCostsCreditsRecordedInAccumulatedOtherComprehensiveLossForOtherPostretirementBenefitPlan_F2E00F78A46F318521B308A8737289A0" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanExpectedAmortizationOfPriorServiceCostCreditNextFiscalYear" xlink:label="loc_us-gaap_DefinedBenefitPlanExpectedAmortizationOfPriorServiceCostCreditNextFiscalYear_04CC5E7A23E4615A8A2108A8737240E3" xlink:type="locator"/>

<link:definitionArc order="10" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_cvx_DefinedBenefitPlanNetActuarialGainLossAbstract_D40A839BB6359682B25108A87372933E" xlink:to="loc_us-gaap_DefinedBenefitPlanExpectedAmortizationOfPriorServiceCostCreditNextFiscalYear_04CC5E7A23E4615A8A2108A8737240E3" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_DefinedBenefitPlanExpectedReturnOnPlanAssetsAbstract" xlink:label="loc_cvx_DefinedBenefitPlanExpectedReturnOnPlanAssetsAbstract_F16C127F6D4BE723497C08A873727AF9" xlink:type="locator"/>

<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_2C72796EADC2CCA0828E08A873715DEF" xlink:to="loc_cvx_DefinedBenefitPlanExpectedReturnOnPlanAssetsAbstract_F16C127F6D4BE723497C08A873727AF9" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets" xlink:label="loc_us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets_42390CCB292A01EE43C108A873721CE3" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_cvx_DefinedBenefitPlanExpectedReturnOnPlanAssetsAbstract_F16C127F6D4BE723497C08A873727AF9" xlink:to="loc_us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets_42390CCB292A01EE43C108A873721CE3" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_PercentageOfDomesticPensionPlanAssetsRelativeToPensionPlanAssets" xlink:label="loc_cvx_PercentageOfDomesticPensionPlanAssetsRelativeToPensionPlanAssets_E6CECD900E8A805A3D5708A873726913" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_cvx_DefinedBenefitPlanExpectedReturnOnPlanAssetsAbstract_F16C127F6D4BE723497C08A873727AF9" xlink:to="loc_cvx_PercentageOfDomesticPensionPlanAssetsRelativeToPensionPlanAssets_E6CECD900E8A805A3D5708A873726913" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_DefinedBenefitPlanPlanAssetsAtFairValueValuationTechniquesMarketValuationPeriodPriorToYearEndMeasurmentDate" xlink:label="loc_cvx_DefinedBenefitPlanPlanAssetsAtFairValueValuationTechniquesMarketValuationPeriodPriorToYearEndMeasurmentDate_D2305FA1AD4B12E6704A08A87373BCA7" xlink:type="locator"/>

<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_cvx_DefinedBenefitPlanExpectedReturnOnPlanAssetsAbstract_F16C127F6D4BE723497C08A873727AF9" xlink:to="loc_cvx_DefinedBenefitPlanPlanAssetsAtFairValueValuationTechniquesMarketValuationPeriodPriorToYearEndMeasurmentDate_D2305FA1AD4B12E6704A08A87373BCA7" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanWeightedAverageAssumptionsUsedInCalculatingBenefitObligationAbstract" xlink:label="loc_us-gaap_DefinedBenefitPlanWeightedAverageAssumptionsUsedInCalculatingBenefitObligationAbstract_BB51F5C317C1D8C21A6208A87373AFB5" xlink:type="locator"/>

<link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_2C72796EADC2CCA0828E08A873715DEF" xlink:to="loc_us-gaap_DefinedBenefitPlanWeightedAverageAssumptionsUsedInCalculatingBenefitObligationAbstract_BB51F5C317C1D8C21A6208A87373AFB5" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate" xlink:label="loc_us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate_3D0F3A88A70CE2F5E0ED08A873731284" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanWeightedAverageAssumptionsUsedInCalculatingBenefitObligationAbstract_BB51F5C317C1D8C21A6208A87373AFB5" xlink:to="loc_us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate_3D0F3A88A70CE2F5E0ED08A873731284" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_DefinedBenefitPlanOtherAssumptionsAbstract" xlink:label="loc_cvx_DefinedBenefitPlanOtherAssumptionsAbstract_67FE2BC42B83EC4EBC2508A873733DFA" xlink:type="locator"/>

<link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_2C72796EADC2CCA0828E08A873715DEF" xlink:to="loc_cvx_DefinedBenefitPlanOtherAssumptionsAbstract_67FE2BC42B83EC4EBC2508A873733DFA" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanHealthCareCostTrendRateAssumedNextFiscalYear" xlink:label="loc_us-gaap_DefinedBenefitPlanHealthCareCostTrendRateAssumedNextFiscalYear_A8DE8ADD61E83D6864EB08A87373CD83" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_cvx_DefinedBenefitPlanOtherAssumptionsAbstract_67FE2BC42B83EC4EBC2508A873733DFA" xlink:to="loc_us-gaap_DefinedBenefitPlanHealthCareCostTrendRateAssumedNextFiscalYear_A8DE8ADD61E83D6864EB08A87373CD83" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanUltimateHealthCareCostTrendRate1" xlink:label="loc_us-gaap_DefinedBenefitPlanUltimateHealthCareCostTrendRate1_9DC994F5E2019BD6C5A808A87373AC8D" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_cvx_DefinedBenefitPlanOtherAssumptionsAbstract_67FE2BC42B83EC4EBC2508A873733DFA" xlink:to="loc_us-gaap_DefinedBenefitPlanUltimateHealthCareCostTrendRate1_9DC994F5E2019BD6C5A808A87373AC8D" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanYearHealthCareCostTrendRateReachesUltimateTrendRate" xlink:label="loc_us-gaap_DefinedBenefitPlanYearHealthCareCostTrendRateReachesUltimateTrendRate_6878B7EC72A76CCBD56A08A873735D79" xlink:type="locator"/>

<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_cvx_DefinedBenefitPlanOtherAssumptionsAbstract_67FE2BC42B83EC4EBC2508A873733DFA" xlink:to="loc_us-gaap_DefinedBenefitPlanYearHealthCareCostTrendRateReachesUltimateTrendRate_6878B7EC72A76CCBD56A08A873735D79" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_DefinedBenefitPlanPrimaryInvestmentAbstract" xlink:label="loc_cvx_DefinedBenefitPlanPrimaryInvestmentAbstract_4125C309A8C25F56970C08A87373A33E" xlink:type="locator"/>

<link:definitionArc order="7" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_2C72796EADC2CCA0828E08A873715DEF" xlink:to="loc_cvx_DefinedBenefitPlanPrimaryInvestmentAbstract_4125C309A8C25F56970C08A87373A33E" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_CompanysPensionPlansAsPercentageOfPensionAssets" xlink:label="loc_cvx_CompanysPensionPlansAsPercentageOfPensionAssets_C33A563962C126DDD69708A873739BC4" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_cvx_DefinedBenefitPlanPrimaryInvestmentAbstract_4125C309A8C25F56970C08A87373A33E" xlink:to="loc_cvx_CompanysPensionPlansAsPercentageOfPensionAssets_C33A563962C126DDD69708A873739BC4" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanPlanAssetsTargetAllocationPercentage" xlink:label="loc_us-gaap_DefinedBenefitPlanPlanAssetsTargetAllocationPercentage_50BE1CD6E1594015942A08A873735B4C" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_cvx_DefinedBenefitPlanPrimaryInvestmentAbstract_4125C309A8C25F56970C08A87373A33E" xlink:to="loc_us-gaap_DefinedBenefitPlanPlanAssetsTargetAllocationPercentage_50BE1CD6E1594015942A08A873735B4C" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_DefinedBenefitPlanContributionsAndPaymentsAbstract" xlink:label="loc_cvx_DefinedBenefitPlanContributionsAndPaymentsAbstract_F8B440E73652DF1BA02F08A87373A88D" xlink:type="locator"/>

<link:definitionArc order="8" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_2C72796EADC2CCA0828E08A873715DEF" xlink:to="loc_cvx_DefinedBenefitPlanContributionsAndPaymentsAbstract_F8B440E73652DF1BA02F08A87373A88D" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanContributionsByEmployer" xlink:label="loc_us-gaap_DefinedBenefitPlanContributionsByEmployer_87E26D0570237631D81308A87373DA57" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_cvx_DefinedBenefitPlanContributionsAndPaymentsAbstract_F8B440E73652DF1BA02F08A87373A88D" xlink:to="loc_us-gaap_DefinedBenefitPlanContributionsByEmployer_87E26D0570237631D81308A87373DA57" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanExpectedFutureEmployerContributionsNextFiscalYear" xlink:label="loc_us-gaap_DefinedBenefitPlanExpectedFutureEmployerContributionsNextFiscalYear_AF2FF20EA4D56408CD5108A8737327AF" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_cvx_DefinedBenefitPlanContributionsAndPaymentsAbstract_F8B440E73652DF1BA02F08A87373A88D" xlink:to="loc_us-gaap_DefinedBenefitPlanExpectedFutureEmployerContributionsNextFiscalYear_AF2FF20EA4D56408CD5108A8737327AF" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_EmployeeSavingsInvestmentPlanAbstract" xlink:label="loc_cvx_EmployeeSavingsInvestmentPlanAbstract_9145D0FB8603651ED24E08A873732B2A" xlink:type="locator"/>

<link:definitionArc order="9" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_2C72796EADC2CCA0828E08A873715DEF" xlink:to="loc_cvx_EmployeeSavingsInvestmentPlanAbstract_9145D0FB8603651ED24E08A873732B2A" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AllocatedShareBasedCompensationExpense" xlink:label="loc_us-gaap_AllocatedShareBasedCompensationExpense_3906E82691592EE0C5D008A87373892E" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_cvx_EmployeeSavingsInvestmentPlanAbstract_9145D0FB8603651ED24E08A873732B2A" xlink:to="loc_us-gaap_AllocatedShareBasedCompensationExpense_3906E82691592EE0C5D008A87373892E" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_DefinedBenefitPlanBenefitPlanTrustsAbstract" xlink:label="loc_cvx_DefinedBenefitPlanBenefitPlanTrustsAbstract_37F7A2A2C4568849784208A87373FCB9" xlink:type="locator"/>

<link:definitionArc order="10" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_2C72796EADC2CCA0828E08A873715DEF" xlink:to="loc_cvx_DefinedBenefitPlanBenefitPlanTrustsAbstract_37F7A2A2C4568849784208A87373FCB9" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_NumberOfTreasuryStocksHeldInBenefitPlanTrustForFundingObligations" xlink:label="loc_cvx_NumberOfTreasuryStocksHeldInBenefitPlanTrustForFundingObligations_3361D5F9B5FFCAA896AB08A87373A735" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_cvx_DefinedBenefitPlanBenefitPlanTrustsAbstract_37F7A2A2C4568849784208A87373FCB9" xlink:to="loc_cvx_NumberOfTreasuryStocksHeldInBenefitPlanTrustForFundingObligations_3361D5F9B5FFCAA896AB08A87373A735" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_VariousGrantorTrustAssetsInvestedPrimarilyInInterestEarningAccounts" xlink:label="loc_cvx_VariousGrantorTrustAssetsInvestedPrimarilyInInterestEarningAccounts_88284CDDE19EBCDD6BAE08A87374D058" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_cvx_DefinedBenefitPlanBenefitPlanTrustsAbstract_37F7A2A2C4568849784208A87373FCB9" xlink:to="loc_cvx_VariousGrantorTrustAssetsInvestedPrimarilyInInterestEarningAccounts_88284CDDE19EBCDD6BAE08A87374D058" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_EmployeeIncentivePlanAbstract" xlink:label="loc_cvx_EmployeeIncentivePlanAbstract_93B7A133B3A22956707B08A873746F4C" xlink:type="locator"/>

<link:definitionArc order="11" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_2C72796EADC2CCA0828E08A873715DEF" xlink:to="loc_cvx_EmployeeIncentivePlanAbstract_93B7A133B3A22956707B08A873746F4C" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_ChargesToExpenseForCashBonuses" xlink:label="loc_cvx_ChargesToExpenseForCashBonuses_9770BA5A6D37F7F4667608A873748590" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_cvx_EmployeeIncentivePlanAbstract_93B7A133B3A22956707B08A873746F4C" xlink:to="loc_cvx_ChargesToExpenseForCashBonuses_9770BA5A6D37F7F4667608A873748590" xlink:type="arc"/>

</link:definitionLink>

<link:definitionLink xlink:role="http://www.chevron.com/role/EmployeeBenefitPlansNetPeriodicBenefitCostDetails" xlink:type="extended">

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:label="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_358B68977B596BEE6276C92048D9EB95" xlink:type="locator"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:label="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_CE7716FCEB9E2037DFA9C92048D1C2E0" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_358B68977B596BEE6276C92048D9EB95" xlink:to="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_CE7716FCEB9E2037DFA9C92048D1C2E0" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RetirementPlanSponsorLocationAxis" xlink:label="loc_us-gaap_RetirementPlanSponsorLocationAxis_86EECC7E6D443D205AB4C92048D12C2F" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_CE7716FCEB9E2037DFA9C92048D1C2E0" xlink:to="loc_us-gaap_RetirementPlanSponsorLocationAxis_86EECC7E6D443D205AB4C92048D12C2F" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RetirementPlanSponsorLocationDomain" xlink:label="loc_us-gaap_RetirementPlanSponsorLocationDomain_8BE08B015EE29CE20AE0C92048D1028F_default" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RetirementPlanSponsorLocationAxis_86EECC7E6D443D205AB4C92048D12C2F" xlink:to="loc_us-gaap_RetirementPlanSponsorLocationDomain_8BE08B015EE29CE20AE0C92048D1028F_default" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RetirementPlanSponsorLocationDomain" xlink:label="loc_us-gaap_RetirementPlanSponsorLocationDomain_8BE08B015EE29CE20AE0C92048D1028F" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RetirementPlanSponsorLocationAxis_86EECC7E6D443D205AB4C92048D12C2F" xlink:to="loc_us-gaap_RetirementPlanSponsorLocationDomain_8BE08B015EE29CE20AE0C92048D1028F" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.sec.gov/country/2017/country-2017-01-31.xsd#country_US" xlink:label="loc_country_US_6DF9061476C7B1856BB5C92048D27CFC" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanSponsorLocationDomain_8BE08B015EE29CE20AE0C92048D1028F" xlink:to="loc_country_US_6DF9061476C7B1856BB5C92048D27CFC" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ForeignPlanMember" xlink:label="loc_us-gaap_ForeignPlanMember_2CF5EA5B46FFD61D4FE9C92048D2185E" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanSponsorLocationDomain_8BE08B015EE29CE20AE0C92048D1028F" xlink:to="loc_us-gaap_ForeignPlanMember_2CF5EA5B46FFD61D4FE9C92048D2185E" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RetirementPlanTypeAxis" xlink:label="loc_us-gaap_RetirementPlanTypeAxis_4A980BB83490A673F7A0C92048D2AC95" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_CE7716FCEB9E2037DFA9C92048D1C2E0" xlink:to="loc_us-gaap_RetirementPlanTypeAxis_4A980BB83490A673F7A0C92048D2AC95" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RetirementPlanTypeDomain" xlink:label="loc_us-gaap_RetirementPlanTypeDomain_9DC0E906BFF8146701B2C92048D874A7_default" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RetirementPlanTypeAxis_4A980BB83490A673F7A0C92048D2AC95" xlink:to="loc_us-gaap_RetirementPlanTypeDomain_9DC0E906BFF8146701B2C92048D874A7_default" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RetirementPlanTypeDomain" xlink:label="loc_us-gaap_RetirementPlanTypeDomain_9DC0E906BFF8146701B2C92048D874A7" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RetirementPlanTypeAxis_4A980BB83490A673F7A0C92048D2AC95" xlink:to="loc_us-gaap_RetirementPlanTypeDomain_9DC0E906BFF8146701B2C92048D874A7" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PensionPlansDefinedBenefitMember" xlink:label="loc_us-gaap_PensionPlansDefinedBenefitMember_D36F71E562B77F331E40C92048D87E99" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanTypeDomain_9DC0E906BFF8146701B2C92048D874A7" xlink:to="loc_us-gaap_PensionPlansDefinedBenefitMember_D36F71E562B77F331E40C92048D87E99" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember" xlink:label="loc_us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember_91B1D25BBA1AAADF5FD0C92048D94235" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanTypeDomain_9DC0E906BFF8146701B2C92048D874A7" xlink:to="loc_us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember_91B1D25BBA1AAADF5FD0C92048D94235" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentBeforeTaxPeriodIncreaseDecreaseAbstract" xlink:label="loc_us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentBeforeTaxPeriodIncreaseDecreaseAbstract_49225D966AF7FA94AEBBC92048D9C318" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_358B68977B596BEE6276C92048D9EB95" xlink:to="loc_us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentBeforeTaxPeriodIncreaseDecreaseAbstract_49225D966AF7FA94AEBBC92048D9C318" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanNetPeriodicBenefitCostAbstract" xlink:label="loc_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCostAbstract_E288083C45644AABF97DC92048D9F552" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentBeforeTaxPeriodIncreaseDecreaseAbstract_49225D966AF7FA94AEBBC92048D9C318" xlink:to="loc_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCostAbstract_E288083C45644AABF97DC92048D9F552" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanServiceCost" xlink:label="loc_us-gaap_DefinedBenefitPlanServiceCost_67FE47BF5665437488BAC92048DA832C" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCostAbstract_E288083C45644AABF97DC92048D9F552" xlink:to="loc_us-gaap_DefinedBenefitPlanServiceCost_67FE47BF5665437488BAC92048DA832C" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanInterestCost" xlink:label="loc_us-gaap_DefinedBenefitPlanInterestCost_B231CEC5E48F1232FF4EC92048DA5B1C" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCostAbstract_E288083C45644AABF97DC92048D9F552" xlink:to="loc_us-gaap_DefinedBenefitPlanInterestCost_B231CEC5E48F1232FF4EC92048DA5B1C" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanExpectedReturnOnPlanAssets" xlink:label="loc_us-gaap_DefinedBenefitPlanExpectedReturnOnPlanAssets_DFB9C7153764F8E4CAD1C92048DAA55E" xlink:type="locator"/>

<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCostAbstract_E288083C45644AABF97DC92048D9F552" xlink:to="loc_us-gaap_DefinedBenefitPlanExpectedReturnOnPlanAssets_DFB9C7153764F8E4CAD1C92048DAA55E" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanAmortizationOfPriorServiceCostCredit" xlink:label="loc_us-gaap_DefinedBenefitPlanAmortizationOfPriorServiceCostCredit_F5D7190B70A908C8A5FAC92048DB815E" xlink:type="locator"/>

<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCostAbstract_E288083C45644AABF97DC92048D9F552" xlink:to="loc_us-gaap_DefinedBenefitPlanAmortizationOfPriorServiceCostCredit_F5D7190B70A908C8A5FAC92048DB815E" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanActuarialGainLossImmediateRecognitionAsComponentInNetPeriodicBenefitCostCredit" xlink:label="loc_us-gaap_DefinedBenefitPlanActuarialGainLossImmediateRecognitionAsComponentInNetPeriodicBenefitCostCredit_51797D55655B4A166EBFC92048DB3DF9" xlink:type="locator"/>

<link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCostAbstract_E288083C45644AABF97DC92048D9F552" xlink:to="loc_us-gaap_DefinedBenefitPlanActuarialGainLossImmediateRecognitionAsComponentInNetPeriodicBenefitCostCredit_51797D55655B4A166EBFC92048DB3DF9" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanRecognizedNetGainLossDueToSettlements1" xlink:label="loc_us-gaap_DefinedBenefitPlanRecognizedNetGainLossDueToSettlements1_49D277CD29BC7F861DDAC92048DB8714" xlink:type="locator"/>

<link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCostAbstract_E288083C45644AABF97DC92048D9F552" xlink:to="loc_us-gaap_DefinedBenefitPlanRecognizedNetGainLossDueToSettlements1_49D277CD29BC7F861DDAC92048DB8714" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanRecognizedNetGainLossDueToCurtailments" xlink:label="loc_us-gaap_DefinedBenefitPlanRecognizedNetGainLossDueToCurtailments_FC1E613270C28FEBA3F0C92048DB3A84" xlink:type="locator"/>

<link:definitionArc order="7" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCostAbstract_E288083C45644AABF97DC92048D9F552" xlink:to="loc_us-gaap_DefinedBenefitPlanRecognizedNetGainLossDueToCurtailments_FC1E613270C28FEBA3F0C92048DB3A84" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost" xlink:label="loc_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost_905427EBCBA011546346C92048DBDE18" xlink:type="locator"/>

<link:definitionArc order="8" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCostAbstract_E288083C45644AABF97DC92048D9F552" xlink:to="loc_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost_905427EBCBA011546346C92048DBDE18" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanAmountsRecognizedInOtherComprehensiveIncomeAbstract" xlink:label="loc_us-gaap_DefinedBenefitPlanAmountsRecognizedInOtherComprehensiveIncomeAbstract_C678E3A0A47216C41CBAC92048DC6BC7" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentBeforeTaxPeriodIncreaseDecreaseAbstract_49225D966AF7FA94AEBBC92048D9C318" xlink:to="loc_us-gaap_DefinedBenefitPlanAmountsRecognizedInOtherComprehensiveIncomeAbstract_C678E3A0A47216C41CBAC92048DC6BC7" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansNetUnamortizedGainLossArisingDuringPeriodBeforeTax" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansNetUnamortizedGainLossArisingDuringPeriodBeforeTax_CEE87615DB14EA71E4C3C92048DC93FD" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanAmountsRecognizedInOtherComprehensiveIncomeAbstract_C678E3A0A47216C41CBAC92048DC6BC7" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansNetUnamortizedGainLossArisingDuringPeriodBeforeTax_CEE87615DB14EA71E4C3C92048DC93FD" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax_391E23299E29C55122F0C92048DC9C4B" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanAmountsRecognizedInOtherComprehensiveIncomeAbstract_C678E3A0A47216C41CBAC92048DC6BC7" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax_391E23299E29C55122F0C92048DC9C4B" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherComprehensiveIncomeDefinedBenefitPlanNetPriorServiceCostCreditArisingDuringPeriodBeforeTax" xlink:label="loc_us-gaap_OtherComprehensiveIncomeDefinedBenefitPlanNetPriorServiceCostCreditArisingDuringPeriodBeforeTax_2C16EFA3FAC948C6B330C92048DCB7F2" xlink:type="locator"/>

<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanAmountsRecognizedInOtherComprehensiveIncomeAbstract_C678E3A0A47216C41CBAC92048DC6BC7" xlink:to="loc_us-gaap_OtherComprehensiveIncomeDefinedBenefitPlanNetPriorServiceCostCreditArisingDuringPeriodBeforeTax_2C16EFA3FAC948C6B330C92048DCB7F2" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditBeforeTax" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditBeforeTax_E4F36700B7094293973AC92048DCB92A" xlink:type="locator"/>

<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanAmountsRecognizedInOtherComprehensiveIncomeAbstract_C678E3A0A47216C41CBAC92048DC6BC7" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditBeforeTax_E4F36700B7094293973AC92048DCB92A" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax_C29BC7E8346DACFA88A1C92048DD5344" xlink:type="locator"/>

<link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanAmountsRecognizedInOtherComprehensiveIncomeAbstract_C678E3A0A47216C41CBAC92048DC6BC7" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax_C29BC7E8346DACFA88A1C92048DD5344" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AmountRecognizedInNetPeriodicBenefitCostAndOtherComprehensiveIncomeLossBeforeTax" xlink:label="loc_us-gaap_AmountRecognizedInNetPeriodicBenefitCostAndOtherComprehensiveIncomeLossBeforeTax_C1AA99662944E3D29B35C94AF2486723" xlink:type="locator"/>

<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentBeforeTaxPeriodIncreaseDecreaseAbstract_49225D966AF7FA94AEBBC92048D9C318" xlink:to="loc_us-gaap_AmountRecognizedInNetPeriodicBenefitCostAndOtherComprehensiveIncomeLossBeforeTax_C1AA99662944E3D29B35C94AF2486723" xlink:type="arc"/>

</link:definitionLink>

<link:definitionLink xlink:role="http://www.chevron.com/role/EmployeeBenefitPlansPlanAssetsDetails" xlink:type="extended">

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:label="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_A6FE3071DB907C534576C9204876E31F" xlink:type="locator"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:label="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_5CA6AAEAA90713AA4D18C920486AAFF1" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_A6FE3071DB907C534576C9204876E31F" xlink:to="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_5CA6AAEAA90713AA4D18C920486AAFF1" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis" xlink:label="loc_us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis_6B77E26BB9E6621A5C8EC920486A1926" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_5CA6AAEAA90713AA4D18C920486AAFF1" xlink:to="loc_us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis_6B77E26BB9E6621A5C8EC920486A1926" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PlanAssetCategoriesDomain" xlink:label="loc_us-gaap_PlanAssetCategoriesDomain_00D478A4FFB5A7F049B6C920487091DC_default" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis_6B77E26BB9E6621A5C8EC920486A1926" xlink:to="loc_us-gaap_PlanAssetCategoriesDomain_00D478A4FFB5A7F049B6C920487091DC_default" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PlanAssetCategoriesDomain" xlink:label="loc_us-gaap_PlanAssetCategoriesDomain_00D478A4FFB5A7F049B6C920487091DC" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis_6B77E26BB9E6621A5C8EC920486A1926" xlink:to="loc_us-gaap_PlanAssetCategoriesDomain_00D478A4FFB5A7F049B6C920487091DC" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanEquitySecuritiesUsMember" xlink:label="loc_us-gaap_DefinedBenefitPlanEquitySecuritiesUsMember_170962BC31E1101985D1C9204870D6FF" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_00D478A4FFB5A7F049B6C920487091DC" xlink:to="loc_us-gaap_DefinedBenefitPlanEquitySecuritiesUsMember_170962BC31E1101985D1C9204870D6FF" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanEquitySecuritiesNonUsMember" xlink:label="loc_us-gaap_DefinedBenefitPlanEquitySecuritiesNonUsMember_FDE2D37FA22F5A624A65C9204871D4F0" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_00D478A4FFB5A7F049B6C920487091DC" xlink:to="loc_us-gaap_DefinedBenefitPlanEquitySecuritiesNonUsMember_FDE2D37FA22F5A624A65C9204871D4F0" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_CollectiveTrustsMutualFundsEquitySecuritiesMember" xlink:label="loc_cvx_CollectiveTrustsMutualFundsEquitySecuritiesMember_26442F20DFB5067CA975C9204871E357" xlink:type="locator"/>

<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_00D478A4FFB5A7F049B6C920487091DC" xlink:to="loc_cvx_CollectiveTrustsMutualFundsEquitySecuritiesMember_26442F20DFB5067CA975C9204871E357" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_USTreasuryAndGovernmentMember" xlink:label="loc_us-gaap_USTreasuryAndGovernmentMember_00584B54944A2F5223DDC92048719470" xlink:type="locator"/>

<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_00D478A4FFB5A7F049B6C920487091DC" xlink:to="loc_us-gaap_USTreasuryAndGovernmentMember_00584B54944A2F5223DDC92048719470" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CorporateDebtSecuritiesMember" xlink:label="loc_us-gaap_CorporateDebtSecuritiesMember_49F4B2F78CC62A3D72E4C9204872A307" xlink:type="locator"/>

<link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_00D478A4FFB5A7F049B6C920487091DC" xlink:to="loc_us-gaap_CorporateDebtSecuritiesMember_49F4B2F78CC62A3D72E4C9204872A307" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_BankLoanObligationsMember" xlink:label="loc_us-gaap_BankLoanObligationsMember_11B755BA2B2802FF5BECC92048729174" xlink:type="locator"/>

<link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_00D478A4FFB5A7F049B6C920487091DC" xlink:to="loc_us-gaap_BankLoanObligationsMember_11B755BA2B2802FF5BECC92048729174" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AssetBackedSecuritiesMember" xlink:label="loc_us-gaap_AssetBackedSecuritiesMember_FB2B59C92164ACBA24EDC9204872DCB1" xlink:type="locator"/>

<link:definitionArc order="7" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_00D478A4FFB5A7F049B6C920487091DC" xlink:to="loc_us-gaap_AssetBackedSecuritiesMember_FB2B59C92164ACBA24EDC9204872DCB1" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_CollectiveTrustsMutualFundsDebtSecuritiesMember" xlink:label="loc_cvx_CollectiveTrustsMutualFundsDebtSecuritiesMember_D76F7BC357B3671045C9C92048726067" xlink:type="locator"/>

<link:definitionArc order="8" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_00D478A4FFB5A7F049B6C920487091DC" xlink:to="loc_cvx_CollectiveTrustsMutualFundsDebtSecuritiesMember_D76F7BC357B3671045C9C92048726067" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_MutualFundsPlanAssetsMember" xlink:label="loc_cvx_MutualFundsPlanAssetsMember_6800B876CC4C3C25E4AAC9204872B02C" xlink:type="locator"/>

<link:definitionArc order="9" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_00D478A4FFB5A7F049B6C920487091DC" xlink:to="loc_cvx_MutualFundsPlanAssetsMember_6800B876CC4C3C25E4AAC9204872B02C" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanRealEstateMember" xlink:label="loc_us-gaap_DefinedBenefitPlanRealEstateMember_E3394F551100341F8676C920487329E6" xlink:type="locator"/>

<link:definitionArc order="10" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_00D478A4FFB5A7F049B6C920487091DC" xlink:to="loc_us-gaap_DefinedBenefitPlanRealEstateMember_E3394F551100341F8676C920487329E6" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_AlternativeInvestmentsMember" xlink:label="loc_cvx_AlternativeInvestmentsMember_1637E1D6B39B57B6B8E9C92048736180" xlink:type="locator"/>

<link:definitionArc order="11" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_00D478A4FFB5A7F049B6C920487091DC" xlink:to="loc_cvx_AlternativeInvestmentsMember_1637E1D6B39B57B6B8E9C92048736180" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanCashAndCashEquivalentsMember" xlink:label="loc_us-gaap_DefinedBenefitPlanCashAndCashEquivalentsMember_F00861630C416C489305C9204873C60D" xlink:type="locator"/>

<link:definitionArc order="12" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_00D478A4FFB5A7F049B6C920487091DC" xlink:to="loc_us-gaap_DefinedBenefitPlanCashAndCashEquivalentsMember_F00861630C416C489305C9204873C60D" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_OtherPlanAssetsMember" xlink:label="loc_cvx_OtherPlanAssetsMember_9B41574DB0845A82824CC9204873A0BE" xlink:type="locator"/>

<link:definitionArc order="13" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_00D478A4FFB5A7F049B6C920487091DC" xlink:to="loc_cvx_OtherPlanAssetsMember_9B41574DB0845A82824CC9204873A0BE" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanEquitySecuritiesCommonStockMember" xlink:label="loc_us-gaap_DefinedBenefitPlanEquitySecuritiesCommonStockMember_0CA78AF4149638E1DD97C920487359B4" xlink:type="locator"/>

<link:definitionArc order="14" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_00D478A4FFB5A7F049B6C920487091DC" xlink:to="loc_us-gaap_DefinedBenefitPlanEquitySecuritiesCommonStockMember_0CA78AF4149638E1DD97C920487359B4" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RetirementPlanSponsorLocationAxis" xlink:label="loc_us-gaap_RetirementPlanSponsorLocationAxis_74A64E3A29FB0FBAB02FC920487345BB" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_5CA6AAEAA90713AA4D18C920486AAFF1" xlink:to="loc_us-gaap_RetirementPlanSponsorLocationAxis_74A64E3A29FB0FBAB02FC920487345BB" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RetirementPlanSponsorLocationDomain" xlink:label="loc_us-gaap_RetirementPlanSponsorLocationDomain_254D3C6144973F3DA8C4C9204874E42A_default" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RetirementPlanSponsorLocationAxis_74A64E3A29FB0FBAB02FC920487345BB" xlink:to="loc_us-gaap_RetirementPlanSponsorLocationDomain_254D3C6144973F3DA8C4C9204874E42A_default" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RetirementPlanSponsorLocationDomain" xlink:label="loc_us-gaap_RetirementPlanSponsorLocationDomain_254D3C6144973F3DA8C4C9204874E42A" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RetirementPlanSponsorLocationAxis_74A64E3A29FB0FBAB02FC920487345BB" xlink:to="loc_us-gaap_RetirementPlanSponsorLocationDomain_254D3C6144973F3DA8C4C9204874E42A" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.sec.gov/country/2017/country-2017-01-31.xsd#country_US" xlink:label="loc_country_US_FDBC2B7B43DD7691B13DC9204874B11C" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanSponsorLocationDomain_254D3C6144973F3DA8C4C9204874E42A" xlink:to="loc_country_US_FDBC2B7B43DD7691B13DC9204874B11C" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ForeignPlanMember" xlink:label="loc_us-gaap_ForeignPlanMember_058CF65DE9BAA0E2A5B0C92048742DFE" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanSponsorLocationDomain_254D3C6144973F3DA8C4C9204874E42A" xlink:to="loc_us-gaap_ForeignPlanMember_058CF65DE9BAA0E2A5B0C92048742DFE" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FairValueByFairValueHierarchyLevelAxis" xlink:label="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_3B0E2270C3133C2964EDC9204874C00D" xlink:type="locator"/>

<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_5CA6AAEAA90713AA4D18C920486AAFF1" xlink:to="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_3B0E2270C3133C2964EDC9204874C00D" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_F62EEFD4308EE6C7A103C9204875C60E_default" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_3B0E2270C3133C2964EDC9204874C00D" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_F62EEFD4308EE6C7A103C9204875C60E_default" xlink:type="arc"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_3B0E2270C3133C2964EDC9204874C00D" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_F62EEFD4308EE6C7A103C9204875C60E" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FairValueInputsLevel1Member" xlink:label="loc_us-gaap_FairValueInputsLevel1Member_655E9F33949B03F3CA74C920487523BB" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_F62EEFD4308EE6C7A103C9204875C60E" xlink:to="loc_us-gaap_FairValueInputsLevel1Member_655E9F33949B03F3CA74C920487523BB" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FairValueInputsLevel2Member" xlink:label="loc_us-gaap_FairValueInputsLevel2Member_CFC5F95623DC91CB262BC9204875F2F1" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_F62EEFD4308EE6C7A103C9204875C60E" xlink:to="loc_us-gaap_FairValueInputsLevel2Member_CFC5F95623DC91CB262BC9204875F2F1" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FairValueInputsLevel3Member" xlink:label="loc_us-gaap_FairValueInputsLevel3Member_04AF2B7E8C9DAA090231C92048750452" xlink:type="locator"/>

<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_F62EEFD4308EE6C7A103C9204875C60E" xlink:to="loc_us-gaap_FairValueInputsLevel3Member_04AF2B7E8C9DAA090231C92048750452" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FairValueMeasuredAtNetAssetValuePerShareMember" xlink:label="loc_us-gaap_FairValueMeasuredAtNetAssetValuePerShareMember_A173810D1FA2DC618E98C9204875E875" xlink:type="locator"/>

<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_F62EEFD4308EE6C7A103C9204875C60E" xlink:to="loc_us-gaap_FairValueMeasuredAtNetAssetValuePerShareMember_A173810D1FA2DC618E98C9204875E875" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisAbstract" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisAbstract_FE21035B60F9752B8D5CC92048761D88" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_A6FE3071DB907C534576C9204876E31F" xlink:to="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisAbstract_FE21035B60F9752B8D5CC92048761D88" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanFairValueOfPlanAssets" xlink:label="loc_us-gaap_DefinedBenefitPlanFairValueOfPlanAssets_E7B03832C4541C0BABBEC920487686D1" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisAbstract_FE21035B60F9752B8D5CC92048761D88" xlink:to="loc_us-gaap_DefinedBenefitPlanFairValueOfPlanAssets_E7B03832C4541C0BABBEC920487686D1" xlink:type="arc"/>

</link:definitionLink>

<link:definitionLink xlink:role="http://www.chevron.com/role/EmployeeBenefitPlansSumamryOfBalanceSheetComponentsDetails" xlink:type="extended">

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:label="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_B8BC0042F2E0094A5EE04791013B0827" xlink:type="locator"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:label="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_8FFDD464E64AD8A62ADF4791013879E9" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_B8BC0042F2E0094A5EE04791013B0827" xlink:to="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_8FFDD464E64AD8A62ADF4791013879E9" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RetirementPlanTypeAxis" xlink:label="loc_us-gaap_RetirementPlanTypeAxis_134EF2CCECE56D218507479101397104" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_8FFDD464E64AD8A62ADF4791013879E9" xlink:to="loc_us-gaap_RetirementPlanTypeAxis_134EF2CCECE56D218507479101397104" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RetirementPlanTypeDomain" xlink:label="loc_us-gaap_RetirementPlanTypeDomain_7026B6F093D352A93C8A479101398B3A_default" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RetirementPlanTypeAxis_134EF2CCECE56D218507479101397104" xlink:to="loc_us-gaap_RetirementPlanTypeDomain_7026B6F093D352A93C8A479101398B3A_default" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RetirementPlanTypeDomain" xlink:label="loc_us-gaap_RetirementPlanTypeDomain_7026B6F093D352A93C8A479101398B3A" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RetirementPlanTypeAxis_134EF2CCECE56D218507479101397104" xlink:to="loc_us-gaap_RetirementPlanTypeDomain_7026B6F093D352A93C8A479101398B3A" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PensionPlansDefinedBenefitMember" xlink:label="loc_us-gaap_PensionPlansDefinedBenefitMember_96CF679C9AB512C4BD1D47910139FBED" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanTypeDomain_7026B6F093D352A93C8A479101398B3A" xlink:to="loc_us-gaap_PensionPlansDefinedBenefitMember_96CF679C9AB512C4BD1D47910139FBED" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember" xlink:label="loc_us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember_E3B75F284639991D16354791013AD222" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanTypeDomain_7026B6F093D352A93C8A479101398B3A" xlink:to="loc_us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember_E3B75F284639991D16354791013AD222" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RetirementPlanSponsorLocationAxis" xlink:label="loc_us-gaap_RetirementPlanSponsorLocationAxis_84F4DBD77FB6ECFDF2784791013AC857" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_8FFDD464E64AD8A62ADF4791013879E9" xlink:to="loc_us-gaap_RetirementPlanSponsorLocationAxis_84F4DBD77FB6ECFDF2784791013AC857" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RetirementPlanSponsorLocationDomain" xlink:label="loc_us-gaap_RetirementPlanSponsorLocationDomain_1BCB055A0FED784969304791013ADBF3_default" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RetirementPlanSponsorLocationAxis_84F4DBD77FB6ECFDF2784791013AC857" xlink:to="loc_us-gaap_RetirementPlanSponsorLocationDomain_1BCB055A0FED784969304791013ADBF3_default" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RetirementPlanSponsorLocationDomain" xlink:label="loc_us-gaap_RetirementPlanSponsorLocationDomain_1BCB055A0FED784969304791013ADBF3" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RetirementPlanSponsorLocationAxis_84F4DBD77FB6ECFDF2784791013AC857" xlink:to="loc_us-gaap_RetirementPlanSponsorLocationDomain_1BCB055A0FED784969304791013ADBF3" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.sec.gov/country/2017/country-2017-01-31.xsd#country_US" xlink:label="loc_country_US_9A431AE4D0B9614139E44791013AD4B5" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanSponsorLocationDomain_1BCB055A0FED784969304791013ADBF3" xlink:to="loc_country_US_9A431AE4D0B9614139E44791013AD4B5" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ForeignPlanMember" xlink:label="loc_us-gaap_ForeignPlanMember_1B3B9326B8642D2A156E4791013A16B2" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanSponsorLocationDomain_1BCB055A0FED784969304791013ADBF3" xlink:to="loc_us-gaap_ForeignPlanMember_1B3B9326B8642D2A156E4791013A16B2" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansNoncurrentLiabilitiesAbstract" xlink:label="loc_us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansNoncurrentLiabilitiesAbstract_DB48BF638AD9E48EA3CA4791013BBC84" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_B8BC0042F2E0094A5EE04791013B0827" xlink:to="loc_us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansNoncurrentLiabilitiesAbstract_DB48BF638AD9E48EA3CA4791013BBC84" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent" xlink:label="loc_us-gaap_DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent_A9990B3EBFFF33DCD47B4791013B98CF" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansNoncurrentLiabilitiesAbstract_DB48BF638AD9E48EA3CA4791013BBC84" xlink:to="loc_us-gaap_DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent_A9990B3EBFFF33DCD47B4791013B98CF" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansCurrentLiabilities" xlink:label="loc_us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansCurrentLiabilities_40922AD06A01A5B003694791013BCF0F" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansNoncurrentLiabilitiesAbstract_DB48BF638AD9E48EA3CA4791013BBC84" xlink:to="loc_us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansCurrentLiabilities_40922AD06A01A5B003694791013BCF0F" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent" xlink:label="loc_us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent_586D4E806E221DC492914791013B3C0C" xlink:type="locator"/>

<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansNoncurrentLiabilitiesAbstract_DB48BF638AD9E48EA3CA4791013BBC84" xlink:to="loc_us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent_586D4E806E221DC492914791013B3C0C" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanAmountsRecognizedInBalanceSheet" xlink:label="loc_us-gaap_DefinedBenefitPlanAmountsRecognizedInBalanceSheet_23EBC4D5C5844A9788D94791013C49AF" xlink:type="locator"/>

<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansNoncurrentLiabilitiesAbstract_DB48BF638AD9E48EA3CA4791013BBC84" xlink:to="loc_us-gaap_DefinedBenefitPlanAmountsRecognizedInBalanceSheet_23EBC4D5C5844A9788D94791013C49AF" xlink:type="arc"/>

</link:definitionLink>

<link:definitionLink xlink:role="http://www.chevron.com/role/EmployeeBenefitPlansSummaryOfChangeInAssetsMeasuredAtLevel3Details" xlink:type="extended">

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:label="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_466D5D309E4F0E57F8C80C4228EA31DE" xlink:type="locator"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:label="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_CAE67A29FCC8FAD73BD00C4228E81DF6" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_466D5D309E4F0E57F8C80C4228EA31DE" xlink:to="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_CAE67A29FCC8FAD73BD00C4228E81DF6" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis" xlink:label="loc_us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis_627C6DED08EB3FE9CC940C4228E8C61D" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_CAE67A29FCC8FAD73BD00C4228E81DF6" xlink:to="loc_us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis_627C6DED08EB3FE9CC940C4228E8C61D" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PlanAssetCategoriesDomain" xlink:label="loc_us-gaap_PlanAssetCategoriesDomain_36DB468FF5C170CA7BD90C4228E8A453_default" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis_627C6DED08EB3FE9CC940C4228E8C61D" xlink:to="loc_us-gaap_PlanAssetCategoriesDomain_36DB468FF5C170CA7BD90C4228E8A453_default" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PlanAssetCategoriesDomain" xlink:label="loc_us-gaap_PlanAssetCategoriesDomain_36DB468FF5C170CA7BD90C4228E8A453" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis_627C6DED08EB3FE9CC940C4228E8C61D" xlink:to="loc_us-gaap_PlanAssetCategoriesDomain_36DB468FF5C170CA7BD90C4228E8A453" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanEquitySecuritiesNonUsMember" xlink:label="loc_us-gaap_DefinedBenefitPlanEquitySecuritiesNonUsMember_3DAA912689DD03CB55A50C4228E82048" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_36DB468FF5C170CA7BD90C4228E8A453" xlink:to="loc_us-gaap_DefinedBenefitPlanEquitySecuritiesNonUsMember_3DAA912689DD03CB55A50C4228E82048" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CorporateDebtSecuritiesMember" xlink:label="loc_us-gaap_CorporateDebtSecuritiesMember_BCD06BA115AC44BA99DB0C4228E90305" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_36DB468FF5C170CA7BD90C4228E8A453" xlink:to="loc_us-gaap_CorporateDebtSecuritiesMember_BCD06BA115AC44BA99DB0C4228E90305" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_BankLoanObligationsMember" xlink:label="loc_us-gaap_BankLoanObligationsMember_6553E3488BDC315920AB0C4228E9BA39" xlink:type="locator"/>

<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_36DB468FF5C170CA7BD90C4228E8A453" xlink:to="loc_us-gaap_BankLoanObligationsMember_6553E3488BDC315920AB0C4228E9BA39" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanRealEstateMember" xlink:label="loc_us-gaap_DefinedBenefitPlanRealEstateMember_77A7DF3270B4B284864D0C4228E9A748" xlink:type="locator"/>

<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_36DB468FF5C170CA7BD90C4228E8A453" xlink:to="loc_us-gaap_DefinedBenefitPlanRealEstateMember_77A7DF3270B4B284864D0C4228E9A748" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_OtherPlanAssetsMember" xlink:label="loc_cvx_OtherPlanAssetsMember_760BD25719F414797ABC0C4228E90DF2" xlink:type="locator"/>

<link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_36DB468FF5C170CA7BD90C4228E8A453" xlink:to="loc_cvx_OtherPlanAssetsMember_760BD25719F414797ABC0C4228E90DF2" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FairValueByFairValueHierarchyLevelAxis" xlink:label="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_C2B5D54A631C11F533DC0C4228E9EE41" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_CAE67A29FCC8FAD73BD00C4228E81DF6" xlink:to="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_C2B5D54A631C11F533DC0C4228E9EE41" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_AAD11D25A3088F67E3960C4228EA9353_default" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_C2B5D54A631C11F533DC0C4228E9EE41" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_AAD11D25A3088F67E3960C4228EA9353_default" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_AAD11D25A3088F67E3960C4228EA9353" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_C2B5D54A631C11F533DC0C4228E9EE41" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_AAD11D25A3088F67E3960C4228EA9353" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FairValueInputsLevel3Member" xlink:label="loc_us-gaap_FairValueInputsLevel3Member_F6830034FE2BED372D2B0C4228EA8B80" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_AAD11D25A3088F67E3960C4228EA9353" xlink:to="loc_us-gaap_FairValueInputsLevel3Member_F6830034FE2BED372D2B0C4228EA8B80" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanChangeInFairValueOfPlanAssetsRollForward" xlink:label="loc_us-gaap_DefinedBenefitPlanChangeInFairValueOfPlanAssetsRollForward_2F344AAD6F1A64D52CC30C4228EA41E7" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_466D5D309E4F0E57F8C80C4228EA31DE" xlink:to="loc_us-gaap_DefinedBenefitPlanChangeInFairValueOfPlanAssetsRollForward_2F344AAD6F1A64D52CC30C4228EA41E7" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanFairValueOfPlanAssets" xlink:label="loc_us-gaap_DefinedBenefitPlanFairValueOfPlanAssets_13D5417F7ADD2C5316230C4228EBAE84" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanChangeInFairValueOfPlanAssetsRollForward_2F344AAD6F1A64D52CC30C4228EA41E7" xlink:to="loc_us-gaap_DefinedBenefitPlanFairValueOfPlanAssets_13D5417F7ADD2C5316230C4228EBAE84" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanActualReturnOnPlanAssetsAbstract" xlink:label="loc_us-gaap_DefinedBenefitPlanActualReturnOnPlanAssetsAbstract_B892AB706B9F55B199BE0C4228EB02FC" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanChangeInFairValueOfPlanAssetsRollForward_2F344AAD6F1A64D52CC30C4228EA41E7" xlink:to="loc_us-gaap_DefinedBenefitPlanActualReturnOnPlanAssetsAbstract_B892AB706B9F55B199BE0C4228EB02FC" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanActualReturnOnPlanAssetsStillHeld" xlink:label="loc_us-gaap_DefinedBenefitPlanActualReturnOnPlanAssetsStillHeld_D020A4061013D96B37590C4228EB4068" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanActualReturnOnPlanAssetsAbstract_B892AB706B9F55B199BE0C4228EB02FC" xlink:to="loc_us-gaap_DefinedBenefitPlanActualReturnOnPlanAssetsStillHeld_D020A4061013D96B37590C4228EB4068" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanActualReturnOnPlanAssetsSoldDuringPeriod" xlink:label="loc_us-gaap_DefinedBenefitPlanActualReturnOnPlanAssetsSoldDuringPeriod_7A9C890650B1329E0AB80C4228EB12A8" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanActualReturnOnPlanAssetsAbstract_B892AB706B9F55B199BE0C4228EB02FC" xlink:to="loc_us-gaap_DefinedBenefitPlanActualReturnOnPlanAssetsSoldDuringPeriod_7A9C890650B1329E0AB80C4228EB12A8" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanPurchasesSalesAndSettlements" xlink:label="loc_us-gaap_DefinedBenefitPlanPurchasesSalesAndSettlements_E5C77FA8BE89CB1B84D00C4228EB3497" xlink:type="locator"/>

<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanChangeInFairValueOfPlanAssetsRollForward_2F344AAD6F1A64D52CC30C4228EA41E7" xlink:to="loc_us-gaap_DefinedBenefitPlanPurchasesSalesAndSettlements_E5C77FA8BE89CB1B84D00C4228EB3497" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanTransfersBetweenMeasurementLevels" xlink:label="loc_us-gaap_DefinedBenefitPlanTransfersBetweenMeasurementLevels_D60A1D6E0F18B21F91410C4228ECA62C" xlink:type="locator"/>

<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanChangeInFairValueOfPlanAssetsRollForward_2F344AAD6F1A64D52CC30C4228EA41E7" xlink:to="loc_us-gaap_DefinedBenefitPlanTransfersBetweenMeasurementLevels_D60A1D6E0F18B21F91410C4228ECA62C" xlink:type="arc"/>

</link:definitionLink>

<link:definitionLink xlink:role="http://www.chevron.com/role/EmployeeBenefitPlansSummaryOfChangeInBenefitObligationAndPlanAssetsDetails" xlink:type="extended">

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:label="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_C380C1FA905A98A6BACF47910146F50D" xlink:type="locator"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:label="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_E242BED3FFDA6CD44D34479101434ED7" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_C380C1FA905A98A6BACF47910146F50D" xlink:to="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_E242BED3FFDA6CD44D34479101434ED7" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RetirementPlanTypeAxis" xlink:label="loc_us-gaap_RetirementPlanTypeAxis_17DC2C532705634B294347910144C3FC" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_E242BED3FFDA6CD44D34479101434ED7" xlink:to="loc_us-gaap_RetirementPlanTypeAxis_17DC2C532705634B294347910144C3FC" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RetirementPlanTypeDomain" xlink:label="loc_us-gaap_RetirementPlanTypeDomain_2AEC4288E5726A1F47EF479101442E9B_default" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RetirementPlanTypeAxis_17DC2C532705634B294347910144C3FC" xlink:to="loc_us-gaap_RetirementPlanTypeDomain_2AEC4288E5726A1F47EF479101442E9B_default" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RetirementPlanTypeDomain" xlink:label="loc_us-gaap_RetirementPlanTypeDomain_2AEC4288E5726A1F47EF479101442E9B" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RetirementPlanTypeAxis_17DC2C532705634B294347910144C3FC" xlink:to="loc_us-gaap_RetirementPlanTypeDomain_2AEC4288E5726A1F47EF479101442E9B" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PensionPlansDefinedBenefitMember" xlink:label="loc_us-gaap_PensionPlansDefinedBenefitMember_0D1907D7779D7A37950E4791014429E3" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanTypeDomain_2AEC4288E5726A1F47EF479101442E9B" xlink:to="loc_us-gaap_PensionPlansDefinedBenefitMember_0D1907D7779D7A37950E4791014429E3" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember" xlink:label="loc_us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember_020A65E2AC45FA627BA4479101452350" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanTypeDomain_2AEC4288E5726A1F47EF479101442E9B" xlink:to="loc_us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember_020A65E2AC45FA627BA4479101452350" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RetirementPlanSponsorLocationAxis" xlink:label="loc_us-gaap_RetirementPlanSponsorLocationAxis_E1B929C97616F7C08606479101455AB6" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_E242BED3FFDA6CD44D34479101434ED7" xlink:to="loc_us-gaap_RetirementPlanSponsorLocationAxis_E1B929C97616F7C08606479101455AB6" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RetirementPlanSponsorLocationDomain" xlink:label="loc_us-gaap_RetirementPlanSponsorLocationDomain_3E1461F9CC56FD48171E479101452095_default" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RetirementPlanSponsorLocationAxis_E1B929C97616F7C08606479101455AB6" xlink:to="loc_us-gaap_RetirementPlanSponsorLocationDomain_3E1461F9CC56FD48171E479101452095_default" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RetirementPlanSponsorLocationDomain" xlink:label="loc_us-gaap_RetirementPlanSponsorLocationDomain_3E1461F9CC56FD48171E479101452095" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RetirementPlanSponsorLocationAxis_E1B929C97616F7C08606479101455AB6" xlink:to="loc_us-gaap_RetirementPlanSponsorLocationDomain_3E1461F9CC56FD48171E479101452095" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.sec.gov/country/2017/country-2017-01-31.xsd#country_US" xlink:label="loc_country_US_9B689D5C4A5990FFFF0147910145C82D" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanSponsorLocationDomain_3E1461F9CC56FD48171E479101452095" xlink:to="loc_country_US_9B689D5C4A5990FFFF0147910145C82D" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ForeignPlanMember" xlink:label="loc_us-gaap_ForeignPlanMember_1373AD814E035A2F4DAF47910146D06E" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanSponsorLocationDomain_3E1461F9CC56FD48171E479101452095" xlink:to="loc_us-gaap_ForeignPlanMember_1373AD814E035A2F4DAF47910146D06E" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanChangeInBenefitObligationRollForward" xlink:label="loc_us-gaap_DefinedBenefitPlanChangeInBenefitObligationRollForward_CC708EAF0ABDB31F8F80479101463152" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_C380C1FA905A98A6BACF47910146F50D" xlink:to="loc_us-gaap_DefinedBenefitPlanChangeInBenefitObligationRollForward_CC708EAF0ABDB31F8F80479101463152" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanBenefitObligation" xlink:label="loc_us-gaap_DefinedBenefitPlanBenefitObligation_2A3659B3C85C46077E0247910146C9AE" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanChangeInBenefitObligationRollForward_CC708EAF0ABDB31F8F80479101463152" xlink:to="loc_us-gaap_DefinedBenefitPlanBenefitObligation_2A3659B3C85C46077E0247910146C9AE" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanServiceCost" xlink:label="loc_us-gaap_DefinedBenefitPlanServiceCost_350487C7250192C042AA47910146A642" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanChangeInBenefitObligationRollForward_CC708EAF0ABDB31F8F80479101463152" xlink:to="loc_us-gaap_DefinedBenefitPlanServiceCost_350487C7250192C042AA47910146A642" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanInterestCost" xlink:label="loc_us-gaap_DefinedBenefitPlanInterestCost_70AE66EF479ABC5E8F814791014759C6" xlink:type="locator"/>

<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanChangeInBenefitObligationRollForward_CC708EAF0ABDB31F8F80479101463152" xlink:to="loc_us-gaap_DefinedBenefitPlanInterestCost_70AE66EF479ABC5E8F814791014759C6" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanBenefitObligationContributionsByPlanParticipant" xlink:label="loc_us-gaap_DefinedBenefitPlanBenefitObligationContributionsByPlanParticipant_D96A601F5D0864E8CC04479101479890" xlink:type="locator"/>

<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanChangeInBenefitObligationRollForward_CC708EAF0ABDB31F8F80479101463152" xlink:to="loc_us-gaap_DefinedBenefitPlanBenefitObligationContributionsByPlanParticipant_D96A601F5D0864E8CC04479101479890" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanPlanAmendments" xlink:label="loc_us-gaap_DefinedBenefitPlanPlanAmendments_8CE02443FE3E92F26B3A47910147C2EA" xlink:type="locator"/>

<link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanChangeInBenefitObligationRollForward_CC708EAF0ABDB31F8F80479101463152" xlink:to="loc_us-gaap_DefinedBenefitPlanPlanAmendments_8CE02443FE3E92F26B3A47910147C2EA" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanActuarialGainLoss" xlink:label="loc_us-gaap_DefinedBenefitPlanActuarialGainLoss_7C90308AC28A07C171EE4791014755FC" xlink:type="locator"/>

<link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanChangeInBenefitObligationRollForward_CC708EAF0ABDB31F8F80479101463152" xlink:to="loc_us-gaap_DefinedBenefitPlanActuarialGainLoss_7C90308AC28A07C171EE4791014755FC" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanForeignCurrencyExchangeRateChangesBenefitObligation" xlink:label="loc_us-gaap_DefinedBenefitPlanForeignCurrencyExchangeRateChangesBenefitObligation_07C08EEA65F89222FA7A4791014835AD" xlink:type="locator"/>

<link:definitionArc order="7" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanChangeInBenefitObligationRollForward_CC708EAF0ABDB31F8F80479101463152" xlink:to="loc_us-gaap_DefinedBenefitPlanForeignCurrencyExchangeRateChangesBenefitObligation_07C08EEA65F89222FA7A4791014835AD" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanBenefitObligationBenefitsPaid" xlink:label="loc_us-gaap_DefinedBenefitPlanBenefitObligationBenefitsPaid_2282CF929B292ABA94F94791014860A3" xlink:type="locator"/>

<link:definitionArc order="8" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanChangeInBenefitObligationRollForward_CC708EAF0ABDB31F8F80479101463152" xlink:to="loc_us-gaap_DefinedBenefitPlanBenefitObligationBenefitsPaid_2282CF929B292ABA94F94791014860A3" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanDivestituresBenefitObligation" xlink:label="loc_us-gaap_DefinedBenefitPlanDivestituresBenefitObligation_1F32C636BCEF08487A6047910148483E" xlink:type="locator"/>

<link:definitionArc order="9" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanChangeInBenefitObligationRollForward_CC708EAF0ABDB31F8F80479101463152" xlink:to="loc_us-gaap_DefinedBenefitPlanDivestituresBenefitObligation_1F32C636BCEF08487A6047910148483E" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanChangeInFairValueOfPlanAssetsRollForward" xlink:label="loc_us-gaap_DefinedBenefitPlanChangeInFairValueOfPlanAssetsRollForward_B03D4C802380BA187C5247910148185E" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_C380C1FA905A98A6BACF47910146F50D" xlink:to="loc_us-gaap_DefinedBenefitPlanChangeInFairValueOfPlanAssetsRollForward_B03D4C802380BA187C5247910148185E" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanFairValueOfPlanAssets" xlink:label="loc_us-gaap_DefinedBenefitPlanFairValueOfPlanAssets_60BABD4ADC41BC6A1BF247910149BA1F" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanChangeInFairValueOfPlanAssetsRollForward_B03D4C802380BA187C5247910148185E" xlink:to="loc_us-gaap_DefinedBenefitPlanFairValueOfPlanAssets_60BABD4ADC41BC6A1BF247910149BA1F" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanActualReturnOnPlanAssets" xlink:label="loc_us-gaap_DefinedBenefitPlanActualReturnOnPlanAssets_76A89BB3FE48758CCF504791014951BC" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanChangeInFairValueOfPlanAssetsRollForward_B03D4C802380BA187C5247910148185E" xlink:to="loc_us-gaap_DefinedBenefitPlanActualReturnOnPlanAssets_76A89BB3FE48758CCF504791014951BC" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanPlanAssetsForeignCurrencyTranslationGainLoss" xlink:label="loc_us-gaap_DefinedBenefitPlanPlanAssetsForeignCurrencyTranslationGainLoss_E9B3CACA20ED4281147F479101496659" xlink:type="locator"/>

<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanChangeInFairValueOfPlanAssetsRollForward_B03D4C802380BA187C5247910148185E" xlink:to="loc_us-gaap_DefinedBenefitPlanPlanAssetsForeignCurrencyTranslationGainLoss_E9B3CACA20ED4281147F479101496659" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanContributionsByEmployer" xlink:label="loc_us-gaap_DefinedBenefitPlanContributionsByEmployer_C7284C53F3AC95433E50479101495305" xlink:type="locator"/>

<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanChangeInFairValueOfPlanAssetsRollForward_B03D4C802380BA187C5247910148185E" xlink:to="loc_us-gaap_DefinedBenefitPlanContributionsByEmployer_C7284C53F3AC95433E50479101495305" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanPlanAssetsContributionsByPlanParticipant" xlink:label="loc_us-gaap_DefinedBenefitPlanPlanAssetsContributionsByPlanParticipant_91833913692595D3DF984791014AFB63" xlink:type="locator"/>

<link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanChangeInFairValueOfPlanAssetsRollForward_B03D4C802380BA187C5247910148185E" xlink:to="loc_us-gaap_DefinedBenefitPlanPlanAssetsContributionsByPlanParticipant_91833913692595D3DF984791014AFB63" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanPlanAssetsBenefitsPaid" xlink:label="loc_us-gaap_DefinedBenefitPlanPlanAssetsBenefitsPaid_E58E3F609E66F89EDAD74791014A24E6" xlink:type="locator"/>

<link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanChangeInFairValueOfPlanAssetsRollForward_B03D4C802380BA187C5247910148185E" xlink:to="loc_us-gaap_DefinedBenefitPlanPlanAssetsBenefitsPaid_E58E3F609E66F89EDAD74791014A24E6" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanDivestituresPlanAssets" xlink:label="loc_us-gaap_DefinedBenefitPlanDivestituresPlanAssets_FDF44CA7CFBB6F22AE394791014AD653" xlink:type="locator"/>

<link:definitionArc order="7" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanChangeInFairValueOfPlanAssetsRollForward_B03D4C802380BA187C5247910148185E" xlink:to="loc_us-gaap_DefinedBenefitPlanDivestituresPlanAssets_FDF44CA7CFBB6F22AE394791014AD653" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanFundedStatusOfPlan" xlink:label="loc_us-gaap_DefinedBenefitPlanFundedStatusOfPlan_10C2717F8AD07EAB331B4791014B4D91" xlink:type="locator"/>

<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_C380C1FA905A98A6BACF47910146F50D" xlink:to="loc_us-gaap_DefinedBenefitPlanFundedStatusOfPlan_10C2717F8AD07EAB331B4791014B4D91" xlink:type="arc"/>

</link:definitionLink>

<link:definitionLink xlink:role="http://www.chevron.com/role/EmployeeBenefitPlansTables" xlink:type="extended"/>

<link:definitionLink xlink:role="http://www.chevron.com/role/Equity" xlink:type="extended"/>

<link:definitionLink xlink:role="http://www.chevron.com/role/EquityDetails" xlink:type="extended">

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_46A9DCC4D42CC95700282CB6ADC16CA0" xlink:type="locator"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable" xlink:label="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_E077E3F76597BCC3D8182CB6ADC1BC2C" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_46A9DCC4D42CC95700282CB6ADC16CA0" xlink:to="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_E077E3F76597BCC3D8182CB6ADC1BC2C" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PlanNameAxis" xlink:label="loc_us-gaap_PlanNameAxis_5D3C10838E45766D75AA2CB6ADC11E5B" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_E077E3F76597BCC3D8182CB6ADC1BC2C" xlink:to="loc_us-gaap_PlanNameAxis_5D3C10838E45766D75AA2CB6ADC11E5B" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PlanNameDomain" xlink:label="loc_us-gaap_PlanNameDomain_504D8E58765A88DAD86B2CB6ADC114F8_default" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_PlanNameAxis_5D3C10838E45766D75AA2CB6ADC11E5B" xlink:to="loc_us-gaap_PlanNameDomain_504D8E58765A88DAD86B2CB6ADC114F8_default" xlink:type="arc"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_PlanNameAxis_5D3C10838E45766D75AA2CB6ADC11E5B" xlink:to="loc_us-gaap_PlanNameDomain_504D8E58765A88DAD86B2CB6ADC114F8" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_ChevronLongTermIncentivePlanLTIPMember" xlink:label="loc_cvx_ChevronLongTermIncentivePlanLTIPMember_F131ABA9DF671D4AD7272CB6ADC11C9B" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanNameDomain_504D8E58765A88DAD86B2CB6ADC114F8" xlink:to="loc_cvx_ChevronLongTermIncentivePlanLTIPMember_F131ABA9DF671D4AD7272CB6ADC11C9B" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RetainedEarningsUndistributedEarningsFromEquityMethodInvestees" xlink:label="loc_us-gaap_RetainedEarningsUndistributedEarningsFromEquityMethodInvestees_495F9EE1A33EE8575B922CB6ADC1C0E4" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_46A9DCC4D42CC95700282CB6ADC16CA0" xlink:to="loc_us-gaap_RetainedEarningsUndistributedEarningsFromEquityMethodInvestees_495F9EE1A33EE8575B922CB6ADC1C0E4" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant_AC22D628C551D4B4B80F2CB6ADC19659" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_46A9DCC4D42CC95700282CB6ADC16CA0" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant_AC22D628C551D4B4B80F2CB6ADC19659" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CommonStockCapitalSharesReservedForFutureIssuance" xlink:label="loc_us-gaap_CommonStockCapitalSharesReservedForFutureIssuance_0F28FE3322F51E148C5C2CB6ADC21581" xlink:type="locator"/>

<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_46A9DCC4D42CC95700282CB6ADC16CA0" xlink:to="loc_us-gaap_CommonStockCapitalSharesReservedForFutureIssuance_0F28FE3322F51E148C5C2CB6ADC21581" xlink:type="arc"/>

</link:definitionLink>

<link:definitionLink xlink:role="http://www.chevron.com/role/FairValueMeasurements" xlink:type="extended"/>

<link:definitionLink xlink:role="http://www.chevron.com/role/FairValueMeasurementsNarrativeDetails" xlink:type="extended">

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems" xlink:label="loc_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems_22B368A30EE58A6B340F623E76D7FBE8" xlink:type="locator"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FairValueByBalanceSheetGroupingTable" xlink:label="loc_us-gaap_FairValueByBalanceSheetGroupingTable_1004F1A0927501E34774623E76D7B8F7" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems_22B368A30EE58A6B340F623E76D7FBE8" xlink:to="loc_us-gaap_FairValueByBalanceSheetGroupingTable_1004F1A0927501E34774623E76D7B8F7" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>

<link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_RangeAxis" xlink:label="loc_srt_RangeAxis_D33AA9AFB86A7918F63B623E76D75FD0" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueByBalanceSheetGroupingTable_1004F1A0927501E34774623E76D7B8F7" xlink:to="loc_srt_RangeAxis_D33AA9AFB86A7918F63B623E76D75FD0" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_RangeMember" xlink:label="loc_srt_RangeMember_8AF45C0128CCFF2308C9623E76D78643_default" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_D33AA9AFB86A7918F63B623E76D75FD0" xlink:to="loc_srt_RangeMember_8AF45C0128CCFF2308C9623E76D78643_default" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_RangeMember" xlink:label="loc_srt_RangeMember_8AF45C0128CCFF2308C9623E76D78643" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_D33AA9AFB86A7918F63B623E76D75FD0" xlink:to="loc_srt_RangeMember_8AF45C0128CCFF2308C9623E76D78643" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_MaximumMember" xlink:label="loc_srt_MaximumMember_F76C8A3E4294454D8BCA623E76D710A3" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_8AF45C0128CCFF2308C9623E76D78643" xlink:to="loc_srt_MaximumMember_F76C8A3E4294454D8BCA623E76D710A3" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FairValueByMeasurementBasisAxis" xlink:label="loc_us-gaap_FairValueByMeasurementBasisAxis_3EBA52A422D2C90BF6CC623E76D75269" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueByBalanceSheetGroupingTable_1004F1A0927501E34774623E76D7B8F7" xlink:to="loc_us-gaap_FairValueByMeasurementBasisAxis_3EBA52A422D2C90BF6CC623E76D75269" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PortionAtFairValueFairValueDisclosureMember" xlink:label="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_C1651A97085082BA8F16623E76D7D5B5_default" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByMeasurementBasisAxis_3EBA52A422D2C90BF6CC623E76D75269" xlink:to="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_C1651A97085082BA8F16623E76D7D5B5_default" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FairValueDisclosureItemAmountsDomain" xlink:label="loc_us-gaap_FairValueDisclosureItemAmountsDomain_3CB2E3DA6857E8EC64F1623E76D75F74" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByMeasurementBasisAxis_3EBA52A422D2C90BF6CC623E76D75269" xlink:to="loc_us-gaap_FairValueDisclosureItemAmountsDomain_3CB2E3DA6857E8EC64F1623E76D75F74" xlink:type="arc"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueDisclosureItemAmountsDomain_3CB2E3DA6857E8EC64F1623E76D75F74" xlink:to="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_C1651A97085082BA8F16623E76D7D5B5" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CarryingReportedAmountFairValueDisclosureMember" xlink:label="loc_us-gaap_CarryingReportedAmountFairValueDisclosureMember_DAAA630CBE906CA4B0F1623E76D78D18" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_C1651A97085082BA8F16623E76D7D5B5" xlink:to="loc_us-gaap_CarryingReportedAmountFairValueDisclosureMember_DAAA630CBE906CA4B0F1623E76D78D18" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EstimateOfFairValueFairValueDisclosureMember" xlink:label="loc_us-gaap_EstimateOfFairValueFairValueDisclosureMember_3C116057C8E631F10612623E76D71DCD" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_C1651A97085082BA8F16623E76D7D5B5" xlink:to="loc_us-gaap_EstimateOfFairValueFairValueDisclosureMember_3C116057C8E631F10612623E76D71DCD" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LongtermDebtTypeAxis" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_33A5828EDAECD08FC751623E76D78DBC" xlink:type="locator"/>

<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueByBalanceSheetGroupingTable_1004F1A0927501E34774623E76D7B8F7" xlink:to="loc_us-gaap_LongtermDebtTypeAxis_33A5828EDAECD08FC751623E76D78DBC" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LongtermDebtTypeDomain" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_B2A9361A9FF7AD8F1AB2623E76D7C3D3_default" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_33A5828EDAECD08FC751623E76D78DBC" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_B2A9361A9FF7AD8F1AB2623E76D7C3D3_default" xlink:type="arc"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_33A5828EDAECD08FC751623E76D78DBC" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_B2A9361A9FF7AD8F1AB2623E76D7C3D3" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CorporateBondSecuritiesMember" xlink:label="loc_us-gaap_CorporateBondSecuritiesMember_1D62CB29F2B114B3F852623E76D7EE61" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_B2A9361A9FF7AD8F1AB2623E76D7C3D3" xlink:to="loc_us-gaap_CorporateBondSecuritiesMember_1D62CB29F2B114B3F852623E76D7EE61" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherLongTermInvestmentsMember" xlink:label="loc_us-gaap_OtherLongTermInvestmentsMember_6D1D7018749D6DF6EAE3623E76D789C8" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_B2A9361A9FF7AD8F1AB2623E76D7C3D3" xlink:to="loc_us-gaap_OtherLongTermInvestmentsMember_6D1D7018749D6DF6EAE3623E76D789C8" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FairValueByFairValueHierarchyLevelAxis" xlink:label="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_03BA9CA191E4376EB6A9623E76D790E0" xlink:type="locator"/>

<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueByBalanceSheetGroupingTable_1004F1A0927501E34774623E76D7B8F7" xlink:to="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_03BA9CA191E4376EB6A9623E76D790E0" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_5081394C04C594442DC4623E76D74205_default" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_03BA9CA191E4376EB6A9623E76D790E0" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_5081394C04C594442DC4623E76D74205_default" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_5081394C04C594442DC4623E76D74205" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_03BA9CA191E4376EB6A9623E76D790E0" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_5081394C04C594442DC4623E76D74205" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FairValueInputsLevel1Member" xlink:label="loc_us-gaap_FairValueInputsLevel1Member_3D5D7DEAD1772018D1F7623E76D728E3" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_5081394C04C594442DC4623E76D74205" xlink:to="loc_us-gaap_FairValueInputsLevel1Member_3D5D7DEAD1772018D1F7623E76D728E3" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FairValueInputsLevel2Member" xlink:label="loc_us-gaap_FairValueInputsLevel2Member_687E6CD1904395466C35623E76D757E0" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_5081394C04C594442DC4623E76D74205" xlink:to="loc_us-gaap_FairValueInputsLevel2Member_687E6CD1904395466C35623E76D757E0" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_MaturityPeriodofBanktimeDepositsclassifiedasCashequivalents" xlink:label="loc_cvx_MaturityPeriodofBanktimeDepositsclassifiedasCashequivalents_BB1043E2A9A7EF441642623E76D7F141" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems_22B368A30EE58A6B340F623E76D7FBE8" xlink:to="loc_cvx_MaturityPeriodofBanktimeDepositsclassifiedasCashequivalents_BB1043E2A9A7EF441642623E76D7F141" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CashAndCashEquivalentsAtCarryingValue" xlink:label="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_3819CBFBEF71C3DAC681623E76D70F96" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems_22B368A30EE58A6B340F623E76D7FBE8" xlink:to="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_3819CBFBEF71C3DAC681623E76D70F96" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_TimeDeposits" xlink:label="loc_us-gaap_TimeDeposits_6AA98DF5DB4DF9F9786362442A3B9BD5" xlink:type="locator"/>

<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems_22B368A30EE58A6B340F623E76D7FBE8" xlink:to="loc_us-gaap_TimeDeposits_6AA98DF5DB4DF9F9786362442A3B9BD5" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RestrictedInvestmentsCurrent" xlink:label="loc_us-gaap_RestrictedInvestmentsCurrent_FF571EC13AA688856450623E76D7453C" xlink:type="locator"/>

<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems_22B368A30EE58A6B340F623E76D7FBE8" xlink:to="loc_us-gaap_RestrictedInvestmentsCurrent_FF571EC13AA688856450623E76D7453C" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LongTermDebt" xlink:label="loc_us-gaap_LongTermDebt_C0D6BF3CAA6FE82383A5623E76D7896B" xlink:type="locator"/>

<link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems_22B368A30EE58A6B340F623E76D7FBE8" xlink:to="loc_us-gaap_LongTermDebt_C0D6BF3CAA6FE82383A5623E76D7896B" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DebtInstrumentFairValue" xlink:label="loc_us-gaap_DebtInstrumentFairValue_1FC814FD58EBAD49BA06623E76D7A0C2" xlink:type="locator"/>

<link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems_22B368A30EE58A6B340F623E76D7FBE8" xlink:to="loc_us-gaap_DebtInstrumentFairValue_1FC814FD58EBAD49BA06623E76D7A0C2" xlink:type="arc"/>

</link:definitionLink>

<link:definitionLink xlink:role="http://www.chevron.com/role/FairValueMeasurementsSummaryOfAssetsAndLiabiliitesMeasuredOnRecurringBasisDetails" xlink:type="extended">

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_3BB513E3A764B6002D02A60E570C5F28" xlink:type="locator"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_E9BB116102E14DDCD7EFA60E570710CC" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_3BB513E3A764B6002D02A60E570C5F28" xlink:to="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_E9BB116102E14DDCD7EFA60E570710CC" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FairValueByMeasurementFrequencyAxis" xlink:label="loc_us-gaap_FairValueByMeasurementFrequencyAxis_C5AF46CB8B3F94164569A60E570AFF73" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_E9BB116102E14DDCD7EFA60E570710CC" xlink:to="loc_us-gaap_FairValueByMeasurementFrequencyAxis_C5AF46CB8B3F94164569A60E570AFF73" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FairValueMeasurementFrequencyDomain" xlink:label="loc_us-gaap_FairValueMeasurementFrequencyDomain_0AC4FA5BDF8283A5AF87A60E570B569E_default" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByMeasurementFrequencyAxis_C5AF46CB8B3F94164569A60E570AFF73" xlink:to="loc_us-gaap_FairValueMeasurementFrequencyDomain_0AC4FA5BDF8283A5AF87A60E570B569E_default" xlink:type="arc"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByMeasurementFrequencyAxis_C5AF46CB8B3F94164569A60E570AFF73" xlink:to="loc_us-gaap_FairValueMeasurementFrequencyDomain_0AC4FA5BDF8283A5AF87A60E570B569E" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FairValueMeasurementsRecurringMember" xlink:label="loc_us-gaap_FairValueMeasurementsRecurringMember_FAF2C087078135823CCFA60E570B86B6" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementFrequencyDomain_0AC4FA5BDF8283A5AF87A60E570B569E" xlink:to="loc_us-gaap_FairValueMeasurementsRecurringMember_FAF2C087078135823CCFA60E570B86B6" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FairValueByFairValueHierarchyLevelAxis" xlink:label="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_BE358D84A415AEC07CF7A60E570B0CD8" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_E9BB116102E14DDCD7EFA60E570710CC" xlink:to="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_BE358D84A415AEC07CF7A60E570B0CD8" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_300760D04912159A0A5AA60E570BB3D4_default" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_BE358D84A415AEC07CF7A60E570B0CD8" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_300760D04912159A0A5AA60E570BB3D4_default" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_300760D04912159A0A5AA60E570BB3D4" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_BE358D84A415AEC07CF7A60E570B0CD8" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_300760D04912159A0A5AA60E570BB3D4" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FairValueInputsLevel1Member" xlink:label="loc_us-gaap_FairValueInputsLevel1Member_649AF16169DE67B651E1A60E570B6507" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_300760D04912159A0A5AA60E570BB3D4" xlink:to="loc_us-gaap_FairValueInputsLevel1Member_649AF16169DE67B651E1A60E570B6507" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FairValueInputsLevel2Member" xlink:label="loc_us-gaap_FairValueInputsLevel2Member_A25C765A02958F8C4B8BA60E570B982C" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_300760D04912159A0A5AA60E570BB3D4" xlink:to="loc_us-gaap_FairValueInputsLevel2Member_A25C765A02958F8C4B8BA60E570B982C" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FairValueInputsLevel3Member" xlink:label="loc_us-gaap_FairValueInputsLevel3Member_EEC302FED4E04992A824A60E570B3A0E" xlink:type="locator"/>

<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_300760D04912159A0A5AA60E570BB3D4" xlink:to="loc_us-gaap_FairValueInputsLevel3Member_EEC302FED4E04992A824A60E570B3A0E" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AvailableForSaleSecuritiesDebtSecurities" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesDebtSecurities_2649A21761C6D2B6B1E9A6399DE5D9E8" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_3BB513E3A764B6002D02A60E570C5F28" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesDebtSecurities_2649A21761C6D2B6B1E9A6399DE5D9E8" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DerivativeAssets" xlink:label="loc_us-gaap_DerivativeAssets_385155E7ECCC40CDE2E7A60E570CB7A6" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_3BB513E3A764B6002D02A60E570C5F28" xlink:to="loc_us-gaap_DerivativeAssets_385155E7ECCC40CDE2E7A60E570CB7A6" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AssetsFairValueDisclosure" xlink:label="loc_us-gaap_AssetsFairValueDisclosure_71492FED6F7AE4C5BE4DA60E570CDD2B" xlink:type="locator"/>

<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_3BB513E3A764B6002D02A60E570C5F28" xlink:to="loc_us-gaap_AssetsFairValueDisclosure_71492FED6F7AE4C5BE4DA60E570CDD2B" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DerivativeLiabilities" xlink:label="loc_us-gaap_DerivativeLiabilities_A0974D894DD614B2DF66A60E570C1D68" xlink:type="locator"/>

<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_3BB513E3A764B6002D02A60E570C5F28" xlink:to="loc_us-gaap_DerivativeLiabilities_A0974D894DD614B2DF66A60E570C1D68" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LiabilitiesFairValueDisclosure" xlink:label="loc_us-gaap_LiabilitiesFairValueDisclosure_88FFB3CE4149FF421A22A60E570C6DFF" xlink:type="locator"/>

<link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_3BB513E3A764B6002D02A60E570C5F28" xlink:to="loc_us-gaap_LiabilitiesFairValueDisclosure_88FFB3CE4149FF421A22A60E570C6DFF" xlink:type="arc"/>

</link:definitionLink>

<link:definitionLink xlink:role="http://www.chevron.com/role/FairValueMeasurementsSummaryOfAssetsAndLiabilitiesMeasuredOnNonRecurringBasisDetails" xlink:type="extended">

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_87583DB583B2C06E8C087F3C56B21051" xlink:type="locator"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_516B18DA67C46D358B157F3C56B0B9F1" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_87583DB583B2C06E8C087F3C56B21051" xlink:to="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_516B18DA67C46D358B157F3C56B0B9F1" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FairValueByMeasurementFrequencyAxis" xlink:label="loc_us-gaap_FairValueByMeasurementFrequencyAxis_379DFF8ED8EF6601A7CB7F3C56B0A57D" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_516B18DA67C46D358B157F3C56B0B9F1" xlink:to="loc_us-gaap_FairValueByMeasurementFrequencyAxis_379DFF8ED8EF6601A7CB7F3C56B0A57D" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FairValueMeasurementFrequencyDomain" xlink:label="loc_us-gaap_FairValueMeasurementFrequencyDomain_BF1BEA8AA66F63E5F98A7F3C56B09DBA_default" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByMeasurementFrequencyAxis_379DFF8ED8EF6601A7CB7F3C56B0A57D" xlink:to="loc_us-gaap_FairValueMeasurementFrequencyDomain_BF1BEA8AA66F63E5F98A7F3C56B09DBA_default" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FairValueMeasurementFrequencyDomain" xlink:label="loc_us-gaap_FairValueMeasurementFrequencyDomain_BF1BEA8AA66F63E5F98A7F3C56B09DBA" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByMeasurementFrequencyAxis_379DFF8ED8EF6601A7CB7F3C56B0A57D" xlink:to="loc_us-gaap_FairValueMeasurementFrequencyDomain_BF1BEA8AA66F63E5F98A7F3C56B09DBA" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FairValueMeasurementsNonrecurringMember" xlink:label="loc_us-gaap_FairValueMeasurementsNonrecurringMember_ACAE4040331572826A467F3C56B11C54" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementFrequencyDomain_BF1BEA8AA66F63E5F98A7F3C56B09DBA" xlink:to="loc_us-gaap_FairValueMeasurementsNonrecurringMember_ACAE4040331572826A467F3C56B11C54" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FairValueByFairValueHierarchyLevelAxis" xlink:label="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_5F6764811EC93FAF1F887F3C56B1E357" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_516B18DA67C46D358B157F3C56B0B9F1" xlink:to="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_5F6764811EC93FAF1F887F3C56B1E357" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_44160864FD98AC9E92707F3C56B1759A_default" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_5F6764811EC93FAF1F887F3C56B1E357" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_44160864FD98AC9E92707F3C56B1759A_default" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_44160864FD98AC9E92707F3C56B1759A" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_5F6764811EC93FAF1F887F3C56B1E357" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_44160864FD98AC9E92707F3C56B1759A" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FairValueInputsLevel1Member" xlink:label="loc_us-gaap_FairValueInputsLevel1Member_A2FFDB324805E03A25037F3C56B16F08" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_44160864FD98AC9E92707F3C56B1759A" xlink:to="loc_us-gaap_FairValueInputsLevel1Member_A2FFDB324805E03A25037F3C56B16F08" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FairValueInputsLevel2Member" xlink:label="loc_us-gaap_FairValueInputsLevel2Member_EFB932F2CC4C0CF365FB7F3C56B2DE43" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_44160864FD98AC9E92707F3C56B1759A" xlink:to="loc_us-gaap_FairValueInputsLevel2Member_EFB932F2CC4C0CF365FB7F3C56B2DE43" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FairValueInputsLevel3Member" xlink:label="loc_us-gaap_FairValueInputsLevel3Member_C45016D5EA7455918DC67F3C56B2919D" xlink:type="locator"/>

<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_44160864FD98AC9E92707F3C56B1759A" xlink:to="loc_us-gaap_FairValueInputsLevel3Member_C45016D5EA7455918DC67F3C56B2919D" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PropertyPlantAndEquipmentFairValueDisclosure" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentFairValueDisclosure_6E55FAC02380C4A6714F7F3C56B236C2" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_87583DB583B2C06E8C087F3C56B21051" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentFairValueDisclosure_6E55FAC02380C4A6714F7F3C56B236C2" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AssetsHeldForSaleLongLivedFairValueDisclosure" xlink:label="loc_us-gaap_AssetsHeldForSaleLongLivedFairValueDisclosure_ADF05C1CDE20FC0868147F3C56B3B4D7" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_87583DB583B2C06E8C087F3C56B21051" xlink:to="loc_us-gaap_AssetsHeldForSaleLongLivedFairValueDisclosure_ADF05C1CDE20FC0868147F3C56B3B4D7" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVenturesFairValueDisclosure" xlink:label="loc_us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVenturesFairValueDisclosure_557921DCBFD6420907567F3C56B33D28" xlink:type="locator"/>

<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_87583DB583B2C06E8C087F3C56B21051" xlink:to="loc_us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVenturesFairValueDisclosure_557921DCBFD6420907567F3C56B33D28" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AssetsFairValueDisclosure" xlink:label="loc_us-gaap_AssetsFairValueDisclosure_A5922D8A66B83F1377B37F3C56B3268E" xlink:type="locator"/>

<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_87583DB583B2C06E8C087F3C56B21051" xlink:to="loc_us-gaap_AssetsFairValueDisclosure_A5922D8A66B83F1377B37F3C56B3268E" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_PropertyPlantAndEquipmentFairValueBeforeTaxLoss" xlink:label="loc_cvx_PropertyPlantAndEquipmentFairValueBeforeTaxLoss_D138DFD0133406AFEF8B7F3C56B39605" xlink:type="locator"/>

<link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_87583DB583B2C06E8C087F3C56B21051" xlink:to="loc_cvx_PropertyPlantAndEquipmentFairValueBeforeTaxLoss_D138DFD0133406AFEF8B7F3C56B39605" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_AssetsHeldForSaleLongLivedFairValueBeforeTaxLoss" xlink:label="loc_cvx_AssetsHeldForSaleLongLivedFairValueBeforeTaxLoss_712103D7D47F504B31DB7F3C56B383B3" xlink:type="locator"/>

<link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_87583DB583B2C06E8C087F3C56B21051" xlink:to="loc_cvx_AssetsHeldForSaleLongLivedFairValueBeforeTaxLoss_712103D7D47F504B31DB7F3C56B383B3" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_FairValueInvestmentsAndAdvancesBeforeTaxLoss" xlink:label="loc_cvx_FairValueInvestmentsAndAdvancesBeforeTaxLoss_027EF5A4E335D47682A47F3C56B4178D" xlink:type="locator"/>

<link:definitionArc order="7" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_87583DB583B2C06E8C087F3C56B21051" xlink:to="loc_cvx_FairValueInvestmentsAndAdvancesBeforeTaxLoss_027EF5A4E335D47682A47F3C56B4178D" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_AssetsFairValueBeforeTaxLoss" xlink:label="loc_cvx_AssetsFairValueBeforeTaxLoss_B4A5C2A584D9243DDAE17F3C56B4B67F" xlink:type="locator"/>

<link:definitionArc order="8" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_87583DB583B2C06E8C087F3C56B21051" xlink:to="loc_cvx_AssetsFairValueBeforeTaxLoss_B4A5C2A584D9243DDAE17F3C56B4B67F" xlink:type="arc"/>

</link:definitionLink>

<link:definitionLink xlink:role="http://www.chevron.com/role/FairValueMeasurementsTables" xlink:type="extended"/>

<link:definitionLink xlink:role="http://www.chevron.com/role/FinancialAndDerivativeInstruments" xlink:type="extended"/>

<link:definitionLink xlink:role="http://www.chevron.com/role/FinancialAndDerivativeInstrumentsFairValueOfDerivativesNotDesignatedAsHedgingInstrumentsDetails" xlink:type="extended">

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DerivativesFairValueLineItems" xlink:label="loc_us-gaap_DerivativesFairValueLineItems_B582692919CDC87BFA387F3C5691F6C6" xlink:type="locator"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable" xlink:label="loc_us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable_2866003A9C3EF3B9D4BB7F3C568C68BC" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DerivativesFairValueLineItems_B582692919CDC87BFA387F3C5691F6C6" xlink:to="loc_us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable_2866003A9C3EF3B9D4BB7F3C568C68BC" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DerivativeInstrumentRiskAxis" xlink:label="loc_us-gaap_DerivativeInstrumentRiskAxis_2BCC8965F524BBF925417F3C568D8289" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable_2866003A9C3EF3B9D4BB7F3C568C68BC" xlink:to="loc_us-gaap_DerivativeInstrumentRiskAxis_2BCC8965F524BBF925417F3C568D8289" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DerivativeContractTypeDomain" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_710DAD6D1D177A1AC2C77F3C568EF659_default" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_2BCC8965F524BBF925417F3C568D8289" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_710DAD6D1D177A1AC2C77F3C568EF659_default" xlink:type="arc"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_2BCC8965F524BBF925417F3C568D8289" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_710DAD6D1D177A1AC2C77F3C568EF659" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CommodityContractMember" xlink:label="loc_us-gaap_CommodityContractMember_6B274DBF3A65ADC69F937F3C568E6672" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_710DAD6D1D177A1AC2C77F3C568EF659" xlink:to="loc_us-gaap_CommodityContractMember_6B274DBF3A65ADC69F937F3C568E6672" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_BalanceSheetLocationAxis" xlink:label="loc_us-gaap_BalanceSheetLocationAxis_DDED1782D8368FDB8B6B7F3C568F4A86" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable_2866003A9C3EF3B9D4BB7F3C568C68BC" xlink:to="loc_us-gaap_BalanceSheetLocationAxis_DDED1782D8368FDB8B6B7F3C568F4A86" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_BalanceSheetLocationDomain" xlink:label="loc_us-gaap_BalanceSheetLocationDomain_5CFD362EABE217D25AEC7F3C568FBF36_default" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_BalanceSheetLocationAxis_DDED1782D8368FDB8B6B7F3C568F4A86" xlink:to="loc_us-gaap_BalanceSheetLocationDomain_5CFD362EABE217D25AEC7F3C568FBF36_default" xlink:type="arc"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_BalanceSheetLocationAxis_DDED1782D8368FDB8B6B7F3C568F4A86" xlink:to="loc_us-gaap_BalanceSheetLocationDomain_5CFD362EABE217D25AEC7F3C568FBF36" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_AccountsAndNotesReceivableNetMember" xlink:label="loc_cvx_AccountsAndNotesReceivableNetMember_D71B5B7AEB3CF5E7D9777F3C568FFC12" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BalanceSheetLocationDomain_5CFD362EABE217D25AEC7F3C568FBF36" xlink:to="loc_cvx_AccountsAndNotesReceivableNetMember_D71B5B7AEB3CF5E7D9777F3C568FFC12" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_LongTermReceivablesNetMember" xlink:label="loc_cvx_LongTermReceivablesNetMember_40BCB27CF2EC51B4FC517F3C5690D466" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BalanceSheetLocationDomain_5CFD362EABE217D25AEC7F3C568FBF36" xlink:to="loc_cvx_LongTermReceivablesNetMember_40BCB27CF2EC51B4FC517F3C5690D466" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AccountsPayableMember" xlink:label="loc_us-gaap_AccountsPayableMember_3AC49C9633EBF389AFBD7F3C56909855" xlink:type="locator"/>

<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BalanceSheetLocationDomain_5CFD362EABE217D25AEC7F3C568FBF36" xlink:to="loc_us-gaap_AccountsPayableMember_3AC49C9633EBF389AFBD7F3C56909855" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_DeferredCreditsAndOtherNoncurrentObligationsMember" xlink:label="loc_cvx_DeferredCreditsAndOtherNoncurrentObligationsMember_2F1905FB2CF435D6EFB37F3C5690361F" xlink:type="locator"/>

<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BalanceSheetLocationDomain_5CFD362EABE217D25AEC7F3C568FBF36" xlink:to="loc_cvx_DeferredCreditsAndOtherNoncurrentObligationsMember_2F1905FB2CF435D6EFB37F3C5690361F" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsAssetAtFairValue" xlink:label="loc_us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsAssetAtFairValue_FAD3ED2F1936B15F67027F3C56919F35" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativesFairValueLineItems_B582692919CDC87BFA387F3C5691F6C6" xlink:to="loc_us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsAssetAtFairValue_FAD3ED2F1936B15F67027F3C56919F35" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsLiabilityAtFairValue" xlink:label="loc_us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsLiabilityAtFairValue_9842271FD522FA552E5D7F3C56912F05" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativesFairValueLineItems_B582692919CDC87BFA387F3C5691F6C6" xlink:to="loc_us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsLiabilityAtFairValue_9842271FD522FA552E5D7F3C56912F05" xlink:type="arc"/>

</link:definitionLink>

<link:definitionLink xlink:role="http://www.chevron.com/role/FinancialAndDerivativeInstrumentsFinancialAndDerivativeInstrumentsEffectOfDerivativesNotDesignatedOnHedgingInstrumentsDetails" xlink:type="extended">

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DerivativeInstrumentsGainLossLineItems" xlink:label="loc_us-gaap_DerivativeInstrumentsGainLossLineItems_83EDE7EFE76045401FFE7F3C568700CD" xlink:type="locator"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable" xlink:label="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable_F2B11F988BF1FC3641DB7F3C5682274E" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossLineItems_83EDE7EFE76045401FFE7F3C568700CD" xlink:to="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable_F2B11F988BF1FC3641DB7F3C5682274E" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DerivativeInstrumentRiskAxis" xlink:label="loc_us-gaap_DerivativeInstrumentRiskAxis_2FF5481E0470B901C4857F3C5683B2B8" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable_F2B11F988BF1FC3641DB7F3C5682274E" xlink:to="loc_us-gaap_DerivativeInstrumentRiskAxis_2FF5481E0470B901C4857F3C5683B2B8" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DerivativeContractTypeDomain" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_DAB692684A73B433E2C67F3C56836B72_default" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_2FF5481E0470B901C4857F3C5683B2B8" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_DAB692684A73B433E2C67F3C56836B72_default" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DerivativeContractTypeDomain" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_DAB692684A73B433E2C67F3C56836B72" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_2FF5481E0470B901C4857F3C5683B2B8" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_DAB692684A73B433E2C67F3C56836B72" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CommodityContractMember" xlink:label="loc_us-gaap_CommodityContractMember_E9A3EF833E1BAB2A250D7F3C568302B5" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_DAB692684A73B433E2C67F3C56836B72" xlink:to="loc_us-gaap_CommodityContractMember_E9A3EF833E1BAB2A250D7F3C568302B5" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncomeStatementLocationAxis" xlink:label="loc_us-gaap_IncomeStatementLocationAxis_664F6BFF103AE970521D7F3C56854584" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable_F2B11F988BF1FC3641DB7F3C5682274E" xlink:to="loc_us-gaap_IncomeStatementLocationAxis_664F6BFF103AE970521D7F3C56854584" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncomeStatementLocationDomain" xlink:label="loc_us-gaap_IncomeStatementLocationDomain_51E39839D2610C5B069C7F3C568522E1_default" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_IncomeStatementLocationAxis_664F6BFF103AE970521D7F3C56854584" xlink:to="loc_us-gaap_IncomeStatementLocationDomain_51E39839D2610C5B069C7F3C568522E1_default" xlink:type="arc"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_IncomeStatementLocationAxis_664F6BFF103AE970521D7F3C56854584" xlink:to="loc_us-gaap_IncomeStatementLocationDomain_51E39839D2610C5B069C7F3C568522E1" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SalesMember" xlink:label="loc_us-gaap_SalesMember_2A26EB7AB2F8856D245B7F3C5685C07C" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementLocationDomain_51E39839D2610C5B069C7F3C568522E1" xlink:to="loc_us-gaap_SalesMember_2A26EB7AB2F8856D245B7F3C5685C07C" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_PurchasedCrudeOilAndProductsMember" xlink:label="loc_cvx_PurchasedCrudeOilAndProductsMember_7742D20297F0F4FB51927F3C5686D816" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementLocationDomain_51E39839D2610C5B069C7F3C568522E1" xlink:to="loc_cvx_PurchasedCrudeOilAndProductsMember_7742D20297F0F4FB51927F3C5686D816" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherIncomeMember" xlink:label="loc_us-gaap_OtherIncomeMember_9D4701B1598569E8B7B07F3C568658C2" xlink:type="locator"/>

<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementLocationDomain_51E39839D2610C5B069C7F3C568522E1" xlink:to="loc_us-gaap_OtherIncomeMember_9D4701B1598569E8B7B07F3C568658C2" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet" xlink:label="loc_us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet_F300194624DC5E2B23217F3C56876B0F" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossLineItems_83EDE7EFE76045401FFE7F3C568700CD" xlink:to="loc_us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet_F300194624DC5E2B23217F3C56876B0F" xlink:type="arc"/>

</link:definitionLink>

<link:definitionLink xlink:role="http://www.chevron.com/role/FinancialAndDerivativeInstrumentsFinancialAndDerivativeInstrumentsEffectOfNettingDerivativeAssetsAndLiabilitiesDetails" xlink:type="extended"/>

<link:definitionLink xlink:role="http://www.chevron.com/role/FinancialAndDerivativeInstrumentsTables" xlink:type="extended"/>

<link:definitionLink xlink:role="http://www.chevron.com/role/InformationRelatingToConsolidatedStatementOfCashFlows" xlink:type="extended"/>

<link:definitionLink xlink:role="http://www.chevron.com/role/InformationRelatingToConsolidatedStatementOfCashFlowsCashBalancesDetails" xlink:type="extended"/>

<link:definitionLink xlink:role="http://www.chevron.com/role/InformationRelatingToConsolidatedStatementOfCashFlowsNarrativeDetails" xlink:type="extended">

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SegmentReportingInformationLineItems" xlink:label="loc_us-gaap_SegmentReportingInformationLineItems_A5F12281CA7243741CB2A4DDAEDE5758" xlink:type="locator"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable" xlink:label="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_B85FC0FA5B32683EB8E9A4DDAED63E51" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_A5F12281CA7243741CB2A4DDAEDE5758" xlink:to="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_B85FC0FA5B32683EB8E9A4DDAED63E51" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ProspectiveAdoptionOfNewAccountingPronouncementsAxis" xlink:label="loc_us-gaap_ProspectiveAdoptionOfNewAccountingPronouncementsAxis_1908C69197D769869CD0A4DDAED8FBC6" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_B85FC0FA5B32683EB8E9A4DDAED63E51" xlink:to="loc_us-gaap_ProspectiveAdoptionOfNewAccountingPronouncementsAxis_1908C69197D769869CD0A4DDAED8FBC6" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AccountingGuidanceMember" xlink:label="loc_us-gaap_AccountingGuidanceMember_E9035A1F53548C428E1FA4DDAED8D616_default" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_ProspectiveAdoptionOfNewAccountingPronouncementsAxis_1908C69197D769869CD0A4DDAED8FBC6" xlink:to="loc_us-gaap_AccountingGuidanceMember_E9035A1F53548C428E1FA4DDAED8D616_default" xlink:type="arc"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_ProspectiveAdoptionOfNewAccountingPronouncementsAxis_1908C69197D769869CD0A4DDAED8FBC6" xlink:to="loc_us-gaap_AccountingGuidanceMember_E9035A1F53548C428E1FA4DDAED8D616" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AccountingStandardsUpdate201615Member" xlink:label="loc_us-gaap_AccountingStandardsUpdate201615Member_29EC4F2A484D90B6B736A4DDAED80FFD" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccountingGuidanceMember_E9035A1F53548C428E1FA4DDAED8D616" xlink:to="loc_us-gaap_AccountingStandardsUpdate201615Member_29EC4F2A484D90B6B736A4DDAED80FFD" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_ConsolidationItemsAxis" xlink:label="loc_srt_ConsolidationItemsAxis_926E812D1E67470CB727A4DDAED89811" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_B85FC0FA5B32683EB8E9A4DDAED63E51" xlink:to="loc_srt_ConsolidationItemsAxis_926E812D1E67470CB727A4DDAED89811" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_ConsolidationItemsDomain" xlink:label="loc_srt_ConsolidationItemsDomain_FD11D4418F24F795C1AAA4DDAED8BB02_default" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ConsolidationItemsAxis_926E812D1E67470CB727A4DDAED89811" xlink:to="loc_srt_ConsolidationItemsDomain_FD11D4418F24F795C1AAA4DDAED8BB02_default" xlink:type="arc"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ConsolidationItemsAxis_926E812D1E67470CB727A4DDAED89811" xlink:to="loc_srt_ConsolidationItemsDomain_FD11D4418F24F795C1AAA4DDAED8BB02" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OperatingSegmentsMember" xlink:label="loc_us-gaap_OperatingSegmentsMember_F11C351B3C0B86C7BB2FA4DDAED8FE23" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ConsolidationItemsDomain_FD11D4418F24F795C1AAA4DDAED8BB02" xlink:to="loc_us-gaap_OperatingSegmentsMember_F11C351B3C0B86C7BB2FA4DDAED8FE23" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StatementBusinessSegmentsAxis" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_3E76379C3BABE3EF28C7A4DDAED85853" xlink:type="locator"/>

<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_B85FC0FA5B32683EB8E9A4DDAED63E51" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_3E76379C3BABE3EF28C7A4DDAED85853" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SegmentDomain" xlink:label="loc_us-gaap_SegmentDomain_B9990093C0C6BD04CE1CA4DDAEDE4F47_default" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_3E76379C3BABE3EF28C7A4DDAED85853" xlink:to="loc_us-gaap_SegmentDomain_B9990093C0C6BD04CE1CA4DDAEDE4F47_default" xlink:type="arc"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_3E76379C3BABE3EF28C7A4DDAED85853" xlink:to="loc_us-gaap_SegmentDomain_B9990093C0C6BD04CE1CA4DDAEDE4F47" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_UpstreamEquipmentMember" xlink:label="loc_us-gaap_UpstreamEquipmentMember_4500F809A652AC21361FA4DDAEDEFF88" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_B9990093C0C6BD04CE1CA4DDAEDE4F47" xlink:to="loc_us-gaap_UpstreamEquipmentMember_4500F809A652AC21361FA4DDAEDEFF88" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PaymentsForRepurchaseOfCommonStock" xlink:label="loc_us-gaap_PaymentsForRepurchaseOfCommonStock_C0491DCCF1B9C5178B8DA4DDAEDE7C66" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_A5F12281CA7243741CB2A4DDAEDE5758" xlink:to="loc_us-gaap_PaymentsForRepurchaseOfCommonStock_C0491DCCF1B9C5178B8DA4DDAEDE7C66" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StockRepurchasedDuringPeriodShares" xlink:label="loc_us-gaap_StockRepurchasedDuringPeriodShares_7C551DE5F6ACC83DBA60A4DDAEDEFC58" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_A5F12281CA7243741CB2A4DDAEDE5758" xlink:to="loc_us-gaap_StockRepurchasedDuringPeriodShares_7C551DE5F6ACC83DBA60A4DDAEDEFC58" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StockRepurchasedDuringPeriodValue" xlink:label="loc_us-gaap_StockRepurchasedDuringPeriodValue_E296B2EF37477686E7CDA4DDAEDE90CE" xlink:type="locator"/>

<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_A5F12281CA7243741CB2A4DDAEDE5758" xlink:to="loc_us-gaap_StockRepurchasedDuringPeriodValue_E296B2EF37477686E7CDA4DDAEDE90CE" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_Noncashincreasetransactioninoperatingsegments" xlink:label="loc_cvx_Noncashincreasetransactioninoperatingsegments_085DFDB24F52648BEEAAA4DDAEDED00E" xlink:type="locator"/>

<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_A5F12281CA7243741CB2A4DDAEDE5758" xlink:to="loc_cvx_Noncashincreasetransactioninoperatingsegments_085DFDB24F52648BEEAAA4DDAEDED00E" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncomeLossFromEquityMethodInvestmentsNetOfDividendsOrDistributions" xlink:label="loc_us-gaap_IncomeLossFromEquityMethodInvestmentsNetOfDividendsOrDistributions_71C6DDB76EFC83F8D632A4DDAEDEACF8" xlink:type="locator"/>

<link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_A5F12281CA7243741CB2A4DDAEDE5758" xlink:to="loc_us-gaap_IncomeLossFromEquityMethodInvestmentsNetOfDividendsOrDistributions_71C6DDB76EFC83F8D632A4DDAEDEACF8" xlink:type="arc"/>

</link:definitionLink>

<link:definitionLink xlink:role="http://www.chevron.com/role/InformationRelatingToConsolidatedStatementOfCashFlowsSummaryOfInformationDetails" xlink:type="extended"/>

<link:definitionLink xlink:role="http://www.chevron.com/role/InformationRelatingToConsolidatedStatementOfCashFlowsTables" xlink:type="extended"/>

<link:definitionLink xlink:role="http://www.chevron.com/role/InvestmentsAndAdvances" xlink:type="extended"/>

<link:definitionLink xlink:role="http://www.chevron.com/role/InvestmentsAndAdvancesNarrativeDetails" xlink:type="extended">

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_VariableInterestEntityLineItems" xlink:label="loc_us-gaap_VariableInterestEntityLineItems_8DC402C09820161D05A39FA002BD1936" xlink:type="locator"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfVariableInterestEntitiesTable" xlink:label="loc_us-gaap_ScheduleOfVariableInterestEntitiesTable_50B5BCEF6ABE8BE2EB5A9FA002B917CB" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_VariableInterestEntityLineItems_8DC402C09820161D05A39FA002BD1936" xlink:to="loc_us-gaap_ScheduleOfVariableInterestEntitiesTable_50B5BCEF6ABE8BE2EB5A9FA002B917CB" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>

<link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis" xlink:label="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_7172B1706A7D8F967FE69FA002B944DE" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfVariableInterestEntitiesTable_50B5BCEF6ABE8BE2EB5A9FA002B917CB" xlink:to="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_7172B1706A7D8F967FE69FA002B944DE" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_EquityMethodInvesteeNameDomain" xlink:label="loc_srt_EquityMethodInvesteeNameDomain_E1EC5FD3E0D06EB5FB259FA002BA4793_default" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_7172B1706A7D8F967FE69FA002B944DE" xlink:to="loc_srt_EquityMethodInvesteeNameDomain_E1EC5FD3E0D06EB5FB259FA002BA4793_default" xlink:type="arc"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_7172B1706A7D8F967FE69FA002B944DE" xlink:to="loc_srt_EquityMethodInvesteeNameDomain_E1EC5FD3E0D06EB5FB259FA002BA4793" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_TengizchevroilLlpMember" xlink:label="loc_cvx_TengizchevroilLlpMember_5F47F429F03D5E4178449FA002BA808C" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_EquityMethodInvesteeNameDomain_E1EC5FD3E0D06EB5FB259FA002BA4793" xlink:to="loc_cvx_TengizchevroilLlpMember_5F47F429F03D5E4178449FA002BA808C" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_PetropiarMember" xlink:label="loc_cvx_PetropiarMember_8E36333DEB6AEAA15DD19FA002BA182C" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_EquityMethodInvesteeNameDomain_E1EC5FD3E0D06EB5FB259FA002BA4793" xlink:to="loc_cvx_PetropiarMember_8E36333DEB6AEAA15DD19FA002BA182C" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_PetroboscanMember" xlink:label="loc_cvx_PetroboscanMember_DFE9EBC6652F18B5CC899FA002BB28E7" xlink:type="locator"/>

<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_EquityMethodInvesteeNameDomain_E1EC5FD3E0D06EB5FB259FA002BA4793" xlink:to="loc_cvx_PetroboscanMember_DFE9EBC6652F18B5CC899FA002BB28E7" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_CaspianPipelineConsortiumMember" xlink:label="loc_cvx_CaspianPipelineConsortiumMember_06ED4CD8D1110579A9889FA002BAA82C" xlink:type="locator"/>

<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_EquityMethodInvesteeNameDomain_E1EC5FD3E0D06EB5FB259FA002BA4793" xlink:to="loc_cvx_CaspianPipelineConsortiumMember_06ED4CD8D1110579A9889FA002BAA82C" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_AngolaLngLimitedMember" xlink:label="loc_cvx_AngolaLngLimitedMember_B6A983C6781015CCC1CC9FA002BB884D" xlink:type="locator"/>

<link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_EquityMethodInvesteeNameDomain_E1EC5FD3E0D06EB5FB259FA002BA4793" xlink:to="loc_cvx_AngolaLngLimitedMember_B6A983C6781015CCC1CC9FA002BB884D" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_ChevronPhillipsChemicalCompanyLlcMember" xlink:label="loc_cvx_ChevronPhillipsChemicalCompanyLlcMember_DBC0BFD91AAB99742F909FA002BB3934" xlink:type="locator"/>

<link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_EquityMethodInvesteeNameDomain_E1EC5FD3E0D06EB5FB259FA002BA4793" xlink:to="loc_cvx_ChevronPhillipsChemicalCompanyLlcMember_DBC0BFD91AAB99742F909FA002BB3934" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_GsCaltexCorporationMember" xlink:label="loc_cvx_GsCaltexCorporationMember_393C34DA8D30A2ED1ED29FA002BBB087" xlink:type="locator"/>

<link:definitionArc order="7" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_EquityMethodInvesteeNameDomain_E1EC5FD3E0D06EB5FB259FA002BA4793" xlink:to="loc_cvx_GsCaltexCorporationMember_393C34DA8D30A2ED1ED29FA002BBB087" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RelatedPartyTransactionsByRelatedPartyAxis" xlink:label="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_42DAF8A4E92D548450589FA002BB9267" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfVariableInterestEntitiesTable_50B5BCEF6ABE8BE2EB5A9FA002B917CB" xlink:to="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_42DAF8A4E92D548450589FA002BB9267" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RelatedPartyDomain" xlink:label="loc_us-gaap_RelatedPartyDomain_6E3CBA2751EADE69087F9FA002BCFD04_default" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_42DAF8A4E92D548450589FA002BB9267" xlink:to="loc_us-gaap_RelatedPartyDomain_6E3CBA2751EADE69087F9FA002BCFD04_default" xlink:type="arc"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_42DAF8A4E92D548450589FA002BB9267" xlink:to="loc_us-gaap_RelatedPartyDomain_6E3CBA2751EADE69087F9FA002BCFD04" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_AffiliatedEntityMember" xlink:label="loc_srt_AffiliatedEntityMember_6CD1829C080B1D13426C9FA002BC20AC" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyDomain_6E3CBA2751EADE69087F9FA002BCFD04" xlink:to="loc_srt_AffiliatedEntityMember_6CD1829C080B1D13426C9FA002BC20AC" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_ProductOrServiceAxis" xlink:label="loc_srt_ProductOrServiceAxis_B04FA200E58852CE8B4A9FA002BCF105" xlink:type="locator"/>

<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfVariableInterestEntitiesTable_50B5BCEF6ABE8BE2EB5A9FA002B917CB" xlink:to="loc_srt_ProductOrServiceAxis_B04FA200E58852CE8B4A9FA002BCF105" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_ProductsAndServicesDomain" xlink:label="loc_srt_ProductsAndServicesDomain_01EE60929BF217AF8BA29FA002BC911B_default" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ProductOrServiceAxis_B04FA200E58852CE8B4A9FA002BCF105" xlink:to="loc_srt_ProductsAndServicesDomain_01EE60929BF217AF8BA29FA002BC911B_default" xlink:type="arc"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ProductOrServiceAxis_B04FA200E58852CE8B4A9FA002BCF105" xlink:to="loc_srt_ProductsAndServicesDomain_01EE60929BF217AF8BA29FA002BC911B" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OilAndGasPurchasedMember" xlink:label="loc_us-gaap_OilAndGasPurchasedMember_89796F41415D99EA77239FA002BCE30D" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_01EE60929BF217AF8BA29FA002BC911B" xlink:to="loc_us-gaap_OilAndGasPurchasedMember_89796F41415D99EA77239FA002BCE30D" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EquityMethodInvestmentOwnershipPercentage" xlink:label="loc_us-gaap_EquityMethodInvestmentOwnershipPercentage_DD23A3DF10939DF8F0789FA002BDB891" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_VariableInterestEntityLineItems_8DC402C09820161D05A39FA002BD1936" xlink:to="loc_us-gaap_EquityMethodInvestmentOwnershipPercentage_DD23A3DF10939DF8F0789FA002BDB891" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_InvestmentInVieGreaterLessThanUnderlyingEquityInVieNetAssetsVieOne" xlink:label="loc_cvx_InvestmentInVieGreaterLessThanUnderlyingEquityInVieNetAssetsVieOne_64826EEA1CD7F1DFD10A9FA002BDEB26" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_VariableInterestEntityLineItems_8DC402C09820161D05A39FA002BD1936" xlink:to="loc_cvx_InvestmentInVieGreaterLessThanUnderlyingEquityInVieNetAssetsVieOne_64826EEA1CD7F1DFD10A9FA002BDEB26" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NotesReceivableRelatedParties" xlink:label="loc_us-gaap_NotesReceivableRelatedParties_EAED88899C2F4F2F91129FA002BD43EC" xlink:type="locator"/>

<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_VariableInterestEntityLineItems_8DC402C09820161D05A39FA002BD1936" xlink:to="loc_us-gaap_NotesReceivableRelatedParties_EAED88899C2F4F2F91129FA002BD43EC" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_PercentageOfAffiliateBySummarizedFinancialInformation" xlink:label="loc_cvx_PercentageOfAffiliateBySummarizedFinancialInformation_BF5C3F6851F6A13DB68A9FA002BEBEE1" xlink:type="locator"/>

<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_VariableInterestEntityLineItems_8DC402C09820161D05A39FA002BD1936" xlink:to="loc_cvx_PercentageOfAffiliateBySummarizedFinancialInformation_BF5C3F6851F6A13DB68A9FA002BEBEE1" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_DecreaseInCompanyInvestmentCarryingValueOverUnderlyingEquityInVieTwoNetAssets" xlink:label="loc_cvx_DecreaseInCompanyInvestmentCarryingValueOverUnderlyingEquityInVieTwoNetAssets_3BEF5F57CA58386F974D9FA002BE159E" xlink:type="locator"/>

<link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_VariableInterestEntityLineItems_8DC402C09820161D05A39FA002BD1936" xlink:to="loc_cvx_DecreaseInCompanyInvestmentCarryingValueOverUnderlyingEquityInVieTwoNetAssets_3BEF5F57CA58386F974D9FA002BE159E" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_InvestmentInVieGreaterLessThanUnderlyingEquityInVieNetAssetsVieThree" xlink:label="loc_cvx_InvestmentInVieGreaterLessThanUnderlyingEquityInVieNetAssetsVieThree_30976B4AE54CEC6C0EC99FA002BFB3BF" xlink:type="locator"/>

<link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_VariableInterestEntityLineItems_8DC402C09820161D05A39FA002BD1936" xlink:to="loc_cvx_InvestmentInVieGreaterLessThanUnderlyingEquityInVieNetAssetsVieThree_30976B4AE54CEC6C0EC99FA002BFB3BF" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LongTermDebt" xlink:label="loc_us-gaap_LongTermDebt_586D89256E505D4D82D49FA002BF781B" xlink:type="locator"/>

<link:definitionArc order="7" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_VariableInterestEntityLineItems_8DC402C09820161D05A39FA002BD1936" xlink:to="loc_us-gaap_LongTermDebt_586D89256E505D4D82D49FA002BF781B" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EquityMethodInvestments" xlink:label="loc_us-gaap_EquityMethodInvestments_B4C91DC67DCE789EFD539FA002BE2CFA" xlink:type="locator"/>

<link:definitionArc order="8" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_VariableInterestEntityLineItems_8DC402C09820161D05A39FA002BD1936" xlink:to="loc_us-gaap_EquityMethodInvestments_B4C91DC67DCE789EFD539FA002BE2CFA" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_LongTermLoansIncludedInInvestmentsAndAdvances" xlink:label="loc_cvx_LongTermLoansIncludedInInvestmentsAndAdvances_A3B713EF1C65D367492D9FA002BEC068" xlink:type="locator"/>

<link:definitionArc order="9" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_VariableInterestEntityLineItems_8DC402C09820161D05A39FA002BD1936" xlink:to="loc_cvx_LongTermLoansIncludedInInvestmentsAndAdvances_A3B713EF1C65D367492D9FA002BEC068" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_LoanProvidedToFundPipeLineConstruction" xlink:label="loc_cvx_LoanProvidedToFundPipeLineConstruction_E393F5C934049914CDB59FA002BEE650" xlink:type="locator"/>

<link:definitionArc order="10" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_VariableInterestEntityLineItems_8DC402C09820161D05A39FA002BD1936" xlink:to="loc_cvx_LoanProvidedToFundPipeLineConstruction_E393F5C934049914CDB59FA002BEE650" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RelatedPartyTransactionOtherRevenuesFromTransactionsWithRelatedParty" xlink:label="loc_us-gaap_RelatedPartyTransactionOtherRevenuesFromTransactionsWithRelatedParty_143136CEE5D536B80F8F9FA002C0408C" xlink:type="locator"/>

<link:definitionArc order="11" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_VariableInterestEntityLineItems_8DC402C09820161D05A39FA002BD1936" xlink:to="loc_us-gaap_RelatedPartyTransactionOtherRevenuesFromTransactionsWithRelatedParty_143136CEE5D536B80F8F9FA002C0408C" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CostOfGoodsAndServicesSold" xlink:label="loc_us-gaap_CostOfGoodsAndServicesSold_42BFDEBE84B02237EF399FA002C02417" xlink:type="locator"/>

<link:definitionArc order="12" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_VariableInterestEntityLineItems_8DC402C09820161D05A39FA002BD1936" xlink:to="loc_us-gaap_CostOfGoodsAndServicesSold_42BFDEBE84B02237EF399FA002C02417" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_AccountsAndNotesReceivableDueFromAffiliatedCompanies" xlink:label="loc_cvx_AccountsAndNotesReceivableDueFromAffiliatedCompanies_7492E570777118C3AE569FA002C0E3F6" xlink:type="locator"/>

<link:definitionArc order="13" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_VariableInterestEntityLineItems_8DC402C09820161D05A39FA002BD1936" xlink:to="loc_cvx_AccountsAndNotesReceivableDueFromAffiliatedCompanies_7492E570777118C3AE569FA002C0E3F6" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_AccountsPayableDueToAffiliatedCompanies" xlink:label="loc_cvx_AccountsPayableDueToAffiliatedCompanies_E20E1F8CA6DFD90C98759FA002C058A3" xlink:type="locator"/>

<link:definitionArc order="14" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_VariableInterestEntityLineItems_8DC402C09820161D05A39FA002BD1936" xlink:to="loc_cvx_AccountsPayableDueToAffiliatedCompanies_E20E1F8CA6DFD90C98759FA002C058A3" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DueFromAffiliates" xlink:label="loc_us-gaap_DueFromAffiliates_0C4EA7A356544BCA935A9FA002C09431" xlink:type="locator"/>

<link:definitionArc order="15" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_VariableInterestEntityLineItems_8DC402C09820161D05A39FA002BD1936" xlink:to="loc_us-gaap_DueFromAffiliates_0C4EA7A356544BCA935A9FA002C09431" xlink:type="arc"/>

</link:definitionLink>

<link:definitionLink xlink:role="http://www.chevron.com/role/InvestmentsAndAdvancesSummaryOfFinancialInformationOfAllEquityAffiliatesDetails" xlink:type="extended">

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfInvestmentsLineItems" xlink:label="loc_us-gaap_ScheduleOfInvestmentsLineItems_83E3FE1E47C21700BFED0BDE64F3C599" xlink:type="locator"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfInvestmentsTable" xlink:label="loc_us-gaap_ScheduleOfInvestmentsTable_BB323D1198469BA76A770BDE64F282B6" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ScheduleOfInvestmentsLineItems_83E3FE1E47C21700BFED0BDE64F3C599" xlink:to="loc_us-gaap_ScheduleOfInvestmentsTable_BB323D1198469BA76A770BDE64F282B6" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>

<link:loc xlink:href="https://xbrl.sec.gov/dei/2018/dei-2018-01-31.xsd#dei_LegalEntityAxis" xlink:label="loc_dei_LegalEntityAxis_534B47F78FEF795AE0820BDE64F38BDB" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfInvestmentsTable_BB323D1198469BA76A770BDE64F282B6" xlink:to="loc_dei_LegalEntityAxis_534B47F78FEF795AE0820BDE64F38BDB" xlink:type="arc"/>

<link:loc xlink:href="https://xbrl.sec.gov/dei/2018/dei-2018-01-31.xsd#dei_EntityDomain" xlink:label="loc_dei_EntityDomain_8C2315809A955B59E1100BDE64F3612D_default" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_534B47F78FEF795AE0820BDE64F38BDB" xlink:to="loc_dei_EntityDomain_8C2315809A955B59E1100BDE64F3612D_default" xlink:type="arc"/>

<link:loc xlink:href="https://xbrl.sec.gov/dei/2018/dei-2018-01-31.xsd#dei_EntityDomain" xlink:label="loc_dei_EntityDomain_8C2315809A955B59E1100BDE64F3612D" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_534B47F78FEF795AE0820BDE64F38BDB" xlink:to="loc_dei_EntityDomain_8C2315809A955B59E1100BDE64F3612D" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_AffiliatesMember" xlink:label="loc_cvx_AffiliatesMember_94F57DA0F22B814524DB0BDE64F318AE" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_8C2315809A955B59E1100BDE64F3612D" xlink:to="loc_cvx_AffiliatesMember_94F57DA0F22B814524DB0BDE64F318AE" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_ConsolidatedEntitiesAxis" xlink:label="loc_srt_ConsolidatedEntitiesAxis_7D3E32AD2E0389F169570BDE64F3C9CA" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfInvestmentsTable_BB323D1198469BA76A770BDE64F282B6" xlink:to="loc_srt_ConsolidatedEntitiesAxis_7D3E32AD2E0389F169570BDE64F3C9CA" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_ConsolidatedEntitiesDomain" xlink:label="loc_srt_ConsolidatedEntitiesDomain_CE0454762C0C37302B820BDE64F35A52_default" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ConsolidatedEntitiesAxis_7D3E32AD2E0389F169570BDE64F3C9CA" xlink:to="loc_srt_ConsolidatedEntitiesDomain_CE0454762C0C37302B820BDE64F35A52_default" xlink:type="arc"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ConsolidatedEntitiesAxis_7D3E32AD2E0389F169570BDE64F3C9CA" xlink:to="loc_srt_ConsolidatedEntitiesDomain_CE0454762C0C37302B820BDE64F35A52" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_ParentCompanyMember" xlink:label="loc_srt_ParentCompanyMember_AFF1DA6CA6C021202E8B0BDE64F3AA53" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ConsolidatedEntitiesDomain_CE0454762C0C37302B820BDE64F35A52" xlink:to="loc_srt_ParentCompanyMember_AFF1DA6CA6C021202E8B0BDE64F3AA53" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EquityMethodInvestmentSummarizedFinancialInformationRevenue" xlink:label="loc_us-gaap_EquityMethodInvestmentSummarizedFinancialInformationRevenue_77C2BCE60C8F5C6024B30BDE64F37B46" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfInvestmentsLineItems_83E3FE1E47C21700BFED0BDE64F3C599" xlink:to="loc_us-gaap_EquityMethodInvestmentSummarizedFinancialInformationRevenue_77C2BCE60C8F5C6024B30BDE64F37B46" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_SummarizedFinancialInformationOnIncomeBeforeIncomeTaxExpense" xlink:label="loc_cvx_SummarizedFinancialInformationOnIncomeBeforeIncomeTaxExpense_FEE041E8AAACB1C9A5370BDE64F3160F" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfInvestmentsLineItems_83E3FE1E47C21700BFED0BDE64F3C599" xlink:to="loc_cvx_SummarizedFinancialInformationOnIncomeBeforeIncomeTaxExpense_FEE041E8AAACB1C9A5370BDE64F3160F" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EquityMethodInvestmentSummarizedFinancialInformationNetIncomeLoss" xlink:label="loc_us-gaap_EquityMethodInvestmentSummarizedFinancialInformationNetIncomeLoss_137CD4536DA1CB3B19720BDE64F35614" xlink:type="locator"/>

<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfInvestmentsLineItems_83E3FE1E47C21700BFED0BDE64F3C599" xlink:to="loc_us-gaap_EquityMethodInvestmentSummarizedFinancialInformationNetIncomeLoss_137CD4536DA1CB3B19720BDE64F35614" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EquityMethodInvestmentSummarizedFinancialInformationCurrentAssets" xlink:label="loc_us-gaap_EquityMethodInvestmentSummarizedFinancialInformationCurrentAssets_3EDD02830D303CD5CE5A0BDE64F37A2C" xlink:type="locator"/>

<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfInvestmentsLineItems_83E3FE1E47C21700BFED0BDE64F3C599" xlink:to="loc_us-gaap_EquityMethodInvestmentSummarizedFinancialInformationCurrentAssets_3EDD02830D303CD5CE5A0BDE64F37A2C" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EquityMethodInvestmentSummarizedFinancialInformationNoncurrentAssets" xlink:label="loc_us-gaap_EquityMethodInvestmentSummarizedFinancialInformationNoncurrentAssets_2A770C8C9A6A82591B1C0BDE64F34619" xlink:type="locator"/>

<link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfInvestmentsLineItems_83E3FE1E47C21700BFED0BDE64F3C599" xlink:to="loc_us-gaap_EquityMethodInvestmentSummarizedFinancialInformationNoncurrentAssets_2A770C8C9A6A82591B1C0BDE64F34619" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EquityMethodInvestmentSummarizedFinancialInformationCurrentLiabilities" xlink:label="loc_us-gaap_EquityMethodInvestmentSummarizedFinancialInformationCurrentLiabilities_E4ED5F44D3BFEDAEFA510BDE64F3843B" xlink:type="locator"/>

<link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfInvestmentsLineItems_83E3FE1E47C21700BFED0BDE64F3C599" xlink:to="loc_us-gaap_EquityMethodInvestmentSummarizedFinancialInformationCurrentLiabilities_E4ED5F44D3BFEDAEFA510BDE64F3843B" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EquityMethodInvestmentSummarizedFinancialInformationNoncurrentLiabilities" xlink:label="loc_us-gaap_EquityMethodInvestmentSummarizedFinancialInformationNoncurrentLiabilities_12F12B3807BFD020427D0BDE64F45927" xlink:type="locator"/>

<link:definitionArc order="7" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfInvestmentsLineItems_83E3FE1E47C21700BFED0BDE64F3C599" xlink:to="loc_us-gaap_EquityMethodInvestmentSummarizedFinancialInformationNoncurrentLiabilities_12F12B3807BFD020427D0BDE64F45927" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EquityMethodInvestmentSummarizedFinancialInformationEquity" xlink:label="loc_us-gaap_EquityMethodInvestmentSummarizedFinancialInformationEquity_C0979674690BCC66A35E0BDE64F45F32" xlink:type="locator"/>

<link:definitionArc order="8" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfInvestmentsLineItems_83E3FE1E47C21700BFED0BDE64F3C599" xlink:to="loc_us-gaap_EquityMethodInvestmentSummarizedFinancialInformationEquity_C0979674690BCC66A35E0BDE64F45F32" xlink:type="arc"/>

</link:definitionLink>

<link:definitionLink xlink:role="http://www.chevron.com/role/InvestmentsAndAdvancesSummaryOfInvestmentAndAdvancesAndEquityInEarningsDetails" xlink:type="extended">

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfEquityMethodInvestmentsLineItems" xlink:label="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_ED214C68E603218C3AF5E25311079B93" xlink:type="locator"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfEquityMethodInvestmentsTable" xlink:label="loc_us-gaap_ScheduleOfEquityMethodInvestmentsTable_4C80C3372AC4CE51B0B4E25310FB74CB" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_ED214C68E603218C3AF5E25311079B93" xlink:to="loc_us-gaap_ScheduleOfEquityMethodInvestmentsTable_4C80C3372AC4CE51B0B4E25310FB74CB" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StatementBusinessSegmentsAxis" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_4FB9C392817D9078B206E25310FB484D" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsTable_4C80C3372AC4CE51B0B4E25310FB74CB" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_4FB9C392817D9078B206E25310FB484D" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SegmentDomain" xlink:label="loc_us-gaap_SegmentDomain_155AE7B9F283F80EEC0FE25310FCF20D_default" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_4FB9C392817D9078B206E25310FB484D" xlink:to="loc_us-gaap_SegmentDomain_155AE7B9F283F80EEC0FE25310FCF20D_default" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SegmentDomain" xlink:label="loc_us-gaap_SegmentDomain_155AE7B9F283F80EEC0FE25310FCF20D" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_4FB9C392817D9078B206E25310FB484D" xlink:to="loc_us-gaap_SegmentDomain_155AE7B9F283F80EEC0FE25310FCF20D" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_UpstreamEquipmentMember" xlink:label="loc_us-gaap_UpstreamEquipmentMember_9488DA01023C5EEC7FB6E25310FCE994" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_155AE7B9F283F80EEC0FE25310FCF20D" xlink:to="loc_us-gaap_UpstreamEquipmentMember_9488DA01023C5EEC7FB6E25310FCE994" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DownstreamEquipmentMember" xlink:label="loc_us-gaap_DownstreamEquipmentMember_1A598E817EAA094C670AE25310FD1760" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_155AE7B9F283F80EEC0FE25310FCF20D" xlink:to="loc_us-gaap_DownstreamEquipmentMember_1A598E817EAA094C670AE25310FD1760" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_ConsolidationItemsAxis" xlink:label="loc_srt_ConsolidationItemsAxis_CC321D33641BB770D4B7E25310FD216D" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsTable_4C80C3372AC4CE51B0B4E25310FB74CB" xlink:to="loc_srt_ConsolidationItemsAxis_CC321D33641BB770D4B7E25310FD216D" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_ConsolidationItemsDomain" xlink:label="loc_srt_ConsolidationItemsDomain_FEEC066DB9D1D58E5BBBE25310FD8F26_default" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ConsolidationItemsAxis_CC321D33641BB770D4B7E25310FD216D" xlink:to="loc_srt_ConsolidationItemsDomain_FEEC066DB9D1D58E5BBBE25310FD8F26_default" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_ConsolidationItemsDomain" xlink:label="loc_srt_ConsolidationItemsDomain_FEEC066DB9D1D58E5BBBE25310FD8F26" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ConsolidationItemsAxis_CC321D33641BB770D4B7E25310FD216D" xlink:to="loc_srt_ConsolidationItemsDomain_FEEC066DB9D1D58E5BBBE25310FD8F26" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OperatingSegmentsMember" xlink:label="loc_us-gaap_OperatingSegmentsMember_B2E3413507E93001CCAEE25310FE182F" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ConsolidationItemsDomain_FEEC066DB9D1D58E5BBBE25310FD8F26" xlink:to="loc_us-gaap_OperatingSegmentsMember_B2E3413507E93001CCAEE25310FE182F" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CorporateNonSegmentMember" xlink:label="loc_us-gaap_CorporateNonSegmentMember_9B87CD9C1B122EFE82E4E25310FEC641" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ConsolidationItemsDomain_FEEC066DB9D1D58E5BBBE25310FD8F26" xlink:to="loc_us-gaap_CorporateNonSegmentMember_9B87CD9C1B122EFE82E4E25310FEC641" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_StatementGeographicalAxis" xlink:label="loc_srt_StatementGeographicalAxis_84B3EE9AC07489CA74BFE25310FE1877" xlink:type="locator"/>

<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsTable_4C80C3372AC4CE51B0B4E25310FB74CB" xlink:to="loc_srt_StatementGeographicalAxis_84B3EE9AC07489CA74BFE25310FE1877" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_SegmentGeographicalDomain" xlink:label="loc_srt_SegmentGeographicalDomain_6B902A5552FAAD562A1CE25310FF69BA_default" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_StatementGeographicalAxis_84B3EE9AC07489CA74BFE25310FE1877" xlink:to="loc_srt_SegmentGeographicalDomain_6B902A5552FAAD562A1CE25310FF69BA_default" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_SegmentGeographicalDomain" xlink:label="loc_srt_SegmentGeographicalDomain_6B902A5552FAAD562A1CE25310FF69BA" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_StatementGeographicalAxis_84B3EE9AC07489CA74BFE25310FE1877" xlink:to="loc_srt_SegmentGeographicalDomain_6B902A5552FAAD562A1CE25310FF69BA" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.sec.gov/country/2017/country-2017-01-31.xsd#country_US" xlink:label="loc_country_US_9631CDDA170D21F1AB2FE25310FFF3B7" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_6B902A5552FAAD562A1CE25310FF69BA" xlink:to="loc_country_US_9631CDDA170D21F1AB2FE25310FFF3B7" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NonUsMember" xlink:label="loc_us-gaap_NonUsMember_E409180BA8B2927D5A33E25311002127" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_6B902A5552FAAD562A1CE25310FF69BA" xlink:to="loc_us-gaap_NonUsMember_E409180BA8B2927D5A33E25311002127" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis" xlink:label="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_270A8FCFA08DB10EDBDAE25311000C77" xlink:type="locator"/>

<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsTable_4C80C3372AC4CE51B0B4E25310FB74CB" xlink:to="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_270A8FCFA08DB10EDBDAE25311000C77" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_EquityMethodInvesteeNameDomain" xlink:label="loc_srt_EquityMethodInvesteeNameDomain_66B9623DE0F0386ED0BEE25311008FAB_default" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_270A8FCFA08DB10EDBDAE25311000C77" xlink:to="loc_srt_EquityMethodInvesteeNameDomain_66B9623DE0F0386ED0BEE25311008FAB_default" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_EquityMethodInvesteeNameDomain" xlink:label="loc_srt_EquityMethodInvesteeNameDomain_66B9623DE0F0386ED0BEE25311008FAB" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_270A8FCFA08DB10EDBDAE25311000C77" xlink:to="loc_srt_EquityMethodInvesteeNameDomain_66B9623DE0F0386ED0BEE25311008FAB" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_TengizchevroilLlpMember" xlink:label="loc_cvx_TengizchevroilLlpMember_BD8AB38F29FF8DD0B313E2531100AD1F" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_EquityMethodInvesteeNameDomain_66B9623DE0F0386ED0BEE25311008FAB" xlink:to="loc_cvx_TengizchevroilLlpMember_BD8AB38F29FF8DD0B313E2531100AD1F" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_PetropiarMember" xlink:label="loc_cvx_PetropiarMember_DF695DC7F037A0686D89E2531102968B" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_EquityMethodInvesteeNameDomain_66B9623DE0F0386ED0BEE25311008FAB" xlink:to="loc_cvx_PetropiarMember_DF695DC7F037A0686D89E2531102968B" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_PetroboscanMember" xlink:label="loc_cvx_PetroboscanMember_BBA8DB74847D1E344548E2531103A2D4" xlink:type="locator"/>

<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_EquityMethodInvesteeNameDomain_66B9623DE0F0386ED0BEE25311008FAB" xlink:to="loc_cvx_PetroboscanMember_BBA8DB74847D1E344548E2531103A2D4" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_CaspianPipelineConsortiumMember" xlink:label="loc_cvx_CaspianPipelineConsortiumMember_161A99E374D2B4CC1B48E2531104C62F" xlink:type="locator"/>

<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_EquityMethodInvesteeNameDomain_66B9623DE0F0386ED0BEE25311008FAB" xlink:to="loc_cvx_CaspianPipelineConsortiumMember_161A99E374D2B4CC1B48E2531104C62F" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_AngolaLngLimitedMember" xlink:label="loc_cvx_AngolaLngLimitedMember_62F23910A28A22C401E9E2531105F47C" xlink:type="locator"/>

<link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_EquityMethodInvesteeNameDomain_66B9623DE0F0386ED0BEE25311008FAB" xlink:to="loc_cvx_AngolaLngLimitedMember_62F23910A28A22C401E9E2531105F47C" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_ChevronPhillipsChemicalCompanyLlcMember" xlink:label="loc_cvx_ChevronPhillipsChemicalCompanyLlcMember_B6759D802A59A833E1B5E25311066A65" xlink:type="locator"/>

<link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_EquityMethodInvesteeNameDomain_66B9623DE0F0386ED0BEE25311008FAB" xlink:to="loc_cvx_ChevronPhillipsChemicalCompanyLlcMember_B6759D802A59A833E1B5E25311066A65" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_GsCaltexCorporationMember" xlink:label="loc_cvx_GsCaltexCorporationMember_DC9608097EA460A9FBC0E2531106A895" xlink:type="locator"/>

<link:definitionArc order="7" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_EquityMethodInvesteeNameDomain_66B9623DE0F0386ED0BEE25311008FAB" xlink:to="loc_cvx_GsCaltexCorporationMember_DC9608097EA460A9FBC0E2531106A895" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_OtherVieMember" xlink:label="loc_cvx_OtherVieMember_99362AC26A640E84FA38E2531106D7A2" xlink:type="locator"/>

<link:definitionArc order="8" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_EquityMethodInvesteeNameDomain_66B9623DE0F0386ED0BEE25311008FAB" xlink:to="loc_cvx_OtherVieMember_99362AC26A640E84FA38E2531106D7A2" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.sec.gov/invest/2013/invest-2013-01-31.xsd#invest_InvestmentAxis" xlink:label="loc_invest_InvestmentAxis_9D3B9C2DF9DD3999A205E2996E12DF7F" xlink:type="locator"/>

<link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsTable_4C80C3372AC4CE51B0B4E25310FB74CB" xlink:to="loc_invest_InvestmentAxis_9D3B9C2DF9DD3999A205E2996E12DF7F" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.sec.gov/invest/2013/invest-2013-01-31.xsd#invest_InvestmentDomain" xlink:label="loc_invest_InvestmentDomain_9CFF47D3105899A621B1E2996E268D5D_default" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_invest_InvestmentAxis_9D3B9C2DF9DD3999A205E2996E12DF7F" xlink:to="loc_invest_InvestmentDomain_9CFF47D3105899A621B1E2996E268D5D_default" xlink:type="arc"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_invest_InvestmentAxis_9D3B9C2DF9DD3999A205E2996E12DF7F" xlink:to="loc_invest_InvestmentDomain_9CFF47D3105899A621B1E2996E268D5D" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_InvestmentsAndAdvancesMember" xlink:label="loc_cvx_InvestmentsAndAdvancesMember_E0AD720FAD5CA84C4054E29970AC59E2" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_invest_InvestmentDomain_9CFF47D3105899A621B1E2996E268D5D" xlink:to="loc_cvx_InvestmentsAndAdvancesMember_E0AD720FAD5CA84C4054E29970AC59E2" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_EquityInEarningsMember" xlink:label="loc_cvx_EquityInEarningsMember_9C5BB9693C86CEF061D2E29B58ACA204" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_invest_InvestmentDomain_9CFF47D3105899A621B1E2996E268D5D" xlink:to="loc_cvx_EquityInEarningsMember_9C5BB9693C86CEF061D2E29B58ACA204" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EquityMethodInvestments" xlink:label="loc_us-gaap_EquityMethodInvestments_5DD9F11CA700CE1E25D0E25311071F47" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_ED214C68E603218C3AF5E25311079B93" xlink:to="loc_us-gaap_EquityMethodInvestments_5DD9F11CA700CE1E25D0E25311071F47" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EquitySecuritiesFvNi" xlink:label="loc_us-gaap_EquitySecuritiesFvNi_68F79484132F0297FE1DE2531107A763" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_ED214C68E603218C3AF5E25311079B93" xlink:to="loc_us-gaap_EquitySecuritiesFvNi_68F79484132F0297FE1DE2531107A763" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures" xlink:label="loc_us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures_BFC714281691742FC5A2E253110769FA" xlink:type="locator"/>

<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_ED214C68E603218C3AF5E25311079B93" xlink:to="loc_us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures_BFC714281691742FC5A2E253110769FA" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncomeLossFromEquityMethodInvestments" xlink:label="loc_us-gaap_IncomeLossFromEquityMethodInvestments_06A7699774567C4F25EEE2531108B607" xlink:type="locator"/>

<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_ED214C68E603218C3AF5E25311079B93" xlink:to="loc_us-gaap_IncomeLossFromEquityMethodInvestments_06A7699774567C4F25EEE2531108B607" xlink:type="arc"/>

</link:definitionLink>

<link:definitionLink xlink:role="http://www.chevron.com/role/InvestmentsAndAdvancesTables" xlink:type="extended"/>

<link:definitionLink xlink:role="http://www.chevron.com/role/LeaseCommitments" xlink:type="extended"/>

<link:definitionLink xlink:role="http://www.chevron.com/role/LeaseCommitmentsDetails" xlink:type="extended"/>

<link:definitionLink xlink:role="http://www.chevron.com/role/LeaseCommitmentsTables" xlink:type="extended"/>

<link:definitionLink xlink:role="http://www.chevron.com/role/Litigation" xlink:type="extended"/>

<link:definitionLink xlink:role="http://www.chevron.com/role/LitigationDetails" xlink:type="extended">

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LossContingenciesLineItems" xlink:label="loc_us-gaap_LossContingenciesLineItems_F6B8FBBFD63C0D7B5B1E9A457A433839" xlink:type="locator"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LossContingenciesTable" xlink:label="loc_us-gaap_LossContingenciesTable_08C7DBB1E7BB9DF191349A457A43597B" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_LossContingenciesLineItems_F6B8FBBFD63C0D7B5B1E9A457A433839" xlink:to="loc_us-gaap_LossContingenciesTable_08C7DBB1E7BB9DF191349A457A43597B" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>

<link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_LitigationCaseAxis" xlink:label="loc_srt_LitigationCaseAxis_05AA4BD83F9B495271CD9A457A43F1BB" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LossContingenciesTable_08C7DBB1E7BB9DF191349A457A43597B" xlink:to="loc_srt_LitigationCaseAxis_05AA4BD83F9B495271CD9A457A43F1BB" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_LitigationCaseTypeDomain" xlink:label="loc_srt_LitigationCaseTypeDomain_16A2687B3C2CFE393D799A457A434912_default" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_LitigationCaseAxis_05AA4BD83F9B495271CD9A457A43F1BB" xlink:to="loc_srt_LitigationCaseTypeDomain_16A2687B3C2CFE393D799A457A434912_default" xlink:type="arc"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_LitigationCaseAxis_05AA4BD83F9B495271CD9A457A43F1BB" xlink:to="loc_srt_LitigationCaseTypeDomain_16A2687B3C2CFE393D799A457A434912" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_MtbeMember" xlink:label="loc_cvx_MtbeMember_4EE1B9DDF59360C8059E9A457A43C076" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_LitigationCaseTypeDomain_16A2687B3C2CFE393D799A457A434912" xlink:to="loc_cvx_MtbeMember_4EE1B9DDF59360C8059E9A457A43C076" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_EcuadorLitigationMember" xlink:label="loc_cvx_EcuadorLitigationMember_16764B8BD8E5FEACE0C49A457A4391D0" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_LitigationCaseTypeDomain_16A2687B3C2CFE393D799A457A434912" xlink:to="loc_cvx_EcuadorLitigationMember_16764B8BD8E5FEACE0C49A457A4391D0" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LitigationStatusAxis" xlink:label="loc_us-gaap_LitigationStatusAxis_B6686F09422EC17AEFB79A457A4350F2" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LossContingenciesTable_08C7DBB1E7BB9DF191349A457A43597B" xlink:to="loc_us-gaap_LitigationStatusAxis_B6686F09422EC17AEFB79A457A4350F2" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LitigationStatusDomain" xlink:label="loc_us-gaap_LitigationStatusDomain_095884F3C53B696705279A457A43A5B0_default" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LitigationStatusAxis_B6686F09422EC17AEFB79A457A4350F2" xlink:to="loc_us-gaap_LitigationStatusDomain_095884F3C53B696705279A457A43A5B0_default" xlink:type="arc"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LitigationStatusAxis_B6686F09422EC17AEFB79A457A4350F2" xlink:to="loc_us-gaap_LitigationStatusDomain_095884F3C53B696705279A457A43A5B0" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PendingLitigationMember" xlink:label="loc_us-gaap_PendingLitigationMember_264DE608C1C245C574CB9A457A43C0FA" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LitigationStatusDomain_095884F3C53B696705279A457A43A5B0" xlink:to="loc_us-gaap_PendingLitigationMember_264DE608C1C245C574CB9A457A43C0FA" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LossContingencyPendingClaimsNumber" xlink:label="loc_us-gaap_LossContingencyPendingClaimsNumber_9A697A322CF6D58494D09A457A43AEA0" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingenciesLineItems_F6B8FBBFD63C0D7B5B1E9A457A433839" xlink:to="loc_us-gaap_LossContingencyPendingClaimsNumber_9A697A322CF6D58494D09A457A43AEA0" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_ConductedRemediationProgram" xlink:label="loc_cvx_ConductedRemediationProgram_742DDCB6EE43BE96F7569A457A43D646" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingenciesLineItems_F6B8FBBFD63C0D7B5B1E9A457A433839" xlink:to="loc_cvx_ConductedRemediationProgram_742DDCB6EE43BE96F7569A457A43D646" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_RemediationProgram" xlink:label="loc_cvx_RemediationProgram_AC22ECF173144E968D6D9A457A43AEA3" xlink:type="locator"/>

<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingenciesLineItems_F6B8FBBFD63C0D7B5B1E9A457A433839" xlink:to="loc_cvx_RemediationProgram_AC22ECF173144E968D6D9A457A43AEA3" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LossContingencyDamagesAwardedValue" xlink:label="loc_us-gaap_LossContingencyDamagesAwardedValue_14BE03CD44AEA18FC7069A457A430E33" xlink:type="locator"/>

<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingenciesLineItems_F6B8FBBFD63C0D7B5B1E9A457A433839" xlink:to="loc_us-gaap_LossContingencyDamagesAwardedValue_14BE03CD44AEA18FC7069A457A430E33" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_AmountAssessedForPlaintiffsRepresentatives" xlink:label="loc_cvx_AmountAssessedForPlaintiffsRepresentatives_9E8C050F443E9868AB999A457A439E9A" xlink:type="locator"/>

<link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingenciesLineItems_F6B8FBBFD63C0D7B5B1E9A457A433839" xlink:to="loc_cvx_AmountAssessedForPlaintiffsRepresentatives_9E8C050F443E9868AB999A457A439E9A" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_AdditionalAmountAssessedInPunitiveDamages" xlink:label="loc_cvx_AdditionalAmountAssessedInPunitiveDamages_9F753FD2D1F6DFECF5309A457A4355F7" xlink:type="locator"/>

<link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingenciesLineItems_F6B8FBBFD63C0D7B5B1E9A457A433839" xlink:to="loc_cvx_AdditionalAmountAssessedInPunitiveDamages_9F753FD2D1F6DFECF5309A457A4355F7" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_PublicApologyDatewithinJudgment" xlink:label="loc_cvx_PublicApologyDatewithinJudgment_E03519C10B3DF064F2959A457A43B66E" xlink:type="locator"/>

<link:definitionArc order="7" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingenciesLineItems_F6B8FBBFD63C0D7B5B1E9A457A433839" xlink:to="loc_cvx_PublicApologyDatewithinJudgment_E03519C10B3DF064F2959A457A43B66E" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_ProposedAdditionalPaymentForPlaintiffAttorneyFeesAsPercentageOfJudgment" xlink:label="loc_cvx_ProposedAdditionalPaymentForPlaintiffAttorneyFeesAsPercentageOfJudgment_60B0BF3BD85F43ED71269A457A432C45" xlink:type="locator"/>

<link:definitionArc order="8" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingenciesLineItems_F6B8FBBFD63C0D7B5B1E9A457A433839" xlink:to="loc_cvx_ProposedAdditionalPaymentForPlaintiffAttorneyFeesAsPercentageOfJudgment_60B0BF3BD85F43ED71269A457A432C45" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LitigationSettlementAmountAwardedToOtherParty" xlink:label="loc_us-gaap_LitigationSettlementAmountAwardedToOtherParty_52C999E04C9849FEA82B9A457A43E349" xlink:type="locator"/>

<link:definitionArc order="9" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingenciesLineItems_F6B8FBBFD63C0D7B5B1E9A457A433839" xlink:to="loc_us-gaap_LitigationSettlementAmountAwardedToOtherParty_52C999E04C9849FEA82B9A457A43E349" xlink:type="arc"/>

</link:definitionLink>

<link:definitionLink xlink:role="http://www.chevron.com/role/LongTermDebt" xlink:type="extended"/>

<link:definitionLink xlink:role="http://www.chevron.com/role/LongTermDebtDetails" xlink:type="extended">

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DebtInstrumentLineItems" xlink:label="loc_us-gaap_DebtInstrumentLineItems_F4338375010DD346EA2408A873F6C540" xlink:type="locator"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DebtInstrumentTable" xlink:label="loc_us-gaap_DebtInstrumentTable_7D6394007D7B439C47D208A873F3DD88" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DebtInstrumentLineItems_F4338375010DD346EA2408A873F6C540" xlink:to="loc_us-gaap_DebtInstrumentTable_7D6394007D7B439C47D208A873F3DD88" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LongtermDebtTypeAxis" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_70A9FE8BE3AF8F3F1C0108A873F382A9" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_7D6394007D7B439C47D208A873F3DD88" xlink:to="loc_us-gaap_LongtermDebtTypeAxis_70A9FE8BE3AF8F3F1C0108A873F382A9" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LongtermDebtTypeDomain" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_BF2218576861A06376E908A873F3BEC1_default" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_70A9FE8BE3AF8F3F1C0108A873F382A9" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_BF2218576861A06376E908A873F3BEC1_default" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LongtermDebtTypeDomain" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_BF2218576861A06376E908A873F3BEC1" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_70A9FE8BE3AF8F3F1C0108A873F382A9" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_BF2218576861A06376E908A873F3BEC1" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NotesPayableToBanksMember" xlink:label="loc_us-gaap_NotesPayableToBanksMember_09C07CD960005D98C92D08A873F30A39" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_BF2218576861A06376E908A873F3BEC1" xlink:to="loc_us-gaap_NotesPayableToBanksMember_09C07CD960005D98C92D08A873F30A39" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_BondsMember" xlink:label="loc_us-gaap_BondsMember_6550A12E5FC197B2EC2E08A873F33215" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_BF2218576861A06376E908A873F3BEC1" xlink:to="loc_us-gaap_BondsMember_6550A12E5FC197B2EC2E08A873F33215" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LoansPayableMember" xlink:label="loc_us-gaap_LoansPayableMember_2A49066E5457AC28F4AF08A873F3259B" xlink:type="locator"/>

<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_BF2218576861A06376E908A873F3BEC1" xlink:to="loc_us-gaap_LoansPayableMember_2A49066E5457AC28F4AF08A873F3259B" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_UnsecuredDebtMember" xlink:label="loc_us-gaap_UnsecuredDebtMember_7B46A4A32BCF564C555E08A873F3BDFB" xlink:type="locator"/>

<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_BF2218576861A06376E908A873F3BEC1" xlink:to="loc_us-gaap_UnsecuredDebtMember_7B46A4A32BCF564C555E08A873F3BDFB" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_MediumTermNotesMember" xlink:label="loc_us-gaap_MediumTermNotesMember_37B9ADD43A0DED1EF74C08A873F30892" xlink:type="locator"/>

<link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_BF2218576861A06376E908A873F3BEC1" xlink:to="loc_us-gaap_MediumTermNotesMember_37B9ADD43A0DED1EF74C08A873F30892" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DebtInstrumentAxis" xlink:label="loc_us-gaap_DebtInstrumentAxis_646404EEBB46E50B328E08A873F32E8C" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_7D6394007D7B439C47D208A873F3DD88" xlink:to="loc_us-gaap_DebtInstrumentAxis_646404EEBB46E50B328E08A873F32E8C" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DebtInstrumentNameDomain" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_8B0FAC0DE70C7B937A7908A873F35BF9_default" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DebtInstrumentAxis_646404EEBB46E50B328E08A873F32E8C" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_8B0FAC0DE70C7B937A7908A873F35BF9_default" xlink:type="arc"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DebtInstrumentAxis_646404EEBB46E50B328E08A873F32E8C" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_8B0FAC0DE70C7B937A7908A873F35BF9" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_ThreePointOneNineOnePercentnotesdue2023Member" xlink:label="loc_cvx_ThreePointOneNineOnePercentnotesdue2023Member_A62DF091C6BB5A8B24A308A873F3B14A" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_8B0FAC0DE70C7B937A7908A873F35BF9" xlink:to="loc_cvx_ThreePointOneNineOnePercentnotesdue2023Member_A62DF091C6BB5A8B24A308A873F3B14A" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_TwoPointNineFiveFourPercentNotesdue2026Member" xlink:label="loc_cvx_TwoPointNineFiveFourPercentNotesdue2026Member_342965B397BAD5D1AC6208A873F49A82" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_8B0FAC0DE70C7B937A7908A873F35BF9" xlink:to="loc_cvx_TwoPointNineFiveFourPercentNotesdue2026Member_342965B397BAD5D1AC6208A873F49A82" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_TwoPointThreeFiveFivePercentNotesDue2022Member" xlink:label="loc_cvx_TwoPointThreeFiveFivePercentNotesDue2022Member_CECAB731FEE6F90302DB08A873F4F7E7" xlink:type="locator"/>

<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_8B0FAC0DE70C7B937A7908A873F35BF9" xlink:to="loc_cvx_TwoPointThreeFiveFivePercentNotesDue2022Member_CECAB731FEE6F90302DB08A873F4F7E7" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_OnePointNineSixOnePercentNotesdue2020Member" xlink:label="loc_cvx_OnePointNineSixOnePercentNotesdue2020Member_610B8E991AD15001313608A873F497AF" xlink:type="locator"/>

<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_8B0FAC0DE70C7B937A7908A873F35BF9" xlink:to="loc_cvx_OnePointNineSixOnePercentNotesdue2020Member_610B8E991AD15001313608A873F497AF" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_FourPointNineFivePercentnotesdue2019Member" xlink:label="loc_cvx_FourPointNineFivePercentnotesdue2019Member_6A822A737806840D039508A873F4D72C" xlink:type="locator"/>

<link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_8B0FAC0DE70C7B937A7908A873F35BF9" xlink:to="loc_cvx_FourPointNineFivePercentnotesdue2019Member_6A822A737806840D039508A873F4D72C" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_OnePointFiveSixOnePercentNotesdue2019Member" xlink:label="loc_cvx_OnePointFiveSixOnePercentNotesdue2019Member_5E137D54E25AFEC80A0808A873F43BD2" xlink:type="locator"/>

<link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_8B0FAC0DE70C7B937A7908A873F35BF9" xlink:to="loc_cvx_OnePointFiveSixOnePercentNotesdue2019Member_5E137D54E25AFEC80A0808A873F43BD2" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_TwoPointOnePercentNotesdue2021Member" xlink:label="loc_cvx_TwoPointOnePercentNotesdue2021Member_FC1FDAA58781A3F9689008A873F40CC6" xlink:type="locator"/>

<link:definitionArc order="7" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_8B0FAC0DE70C7B937A7908A873F35BF9" xlink:to="loc_cvx_TwoPointOnePercentNotesdue2021Member_FC1FDAA58781A3F9689008A873F40CC6" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_TwoPointFourOneNinePercentNotesdue2020Member" xlink:label="loc_cvx_TwoPointFourOneNinePercentNotesdue2020Member_18FDFD669E355DA5284A08A873F47570" xlink:type="locator"/>

<link:definitionArc order="8" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_8B0FAC0DE70C7B937A7908A873F35BF9" xlink:to="loc_cvx_TwoPointFourOneNinePercentNotesdue2020Member_18FDFD669E355DA5284A08A873F47570" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_TwoPointFourTwoSevenPercentNotesdue2020Member" xlink:label="loc_cvx_TwoPointFourTwoSevenPercentNotesdue2020Member_D3FC21A766CC636F0CFC08A873F4CA18" xlink:type="locator"/>

<link:definitionArc order="9" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_8B0FAC0DE70C7B937A7908A873F35BF9" xlink:to="loc_cvx_TwoPointFourTwoSevenPercentNotesdue2020Member_D3FC21A766CC636F0CFC08A873F4CA18" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_TwoPointEightNineFivePercentNotesdue2024Member" xlink:label="loc_cvx_TwoPointEightNineFivePercentNotesdue2024Member_3999256C763B9AA968C808A873F42029" xlink:type="locator"/>

<link:definitionArc order="10" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_8B0FAC0DE70C7B937A7908A873F35BF9" xlink:to="loc_cvx_TwoPointEightNineFivePercentNotesdue2024Member_3999256C763B9AA968C808A873F42029" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_FloatingRateNotesdue2019Member" xlink:label="loc_cvx_FloatingRateNotesdue2019Member_90FADC95F5E5E32DB71408A873F4D89D" xlink:type="locator"/>

<link:definitionArc order="11" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_8B0FAC0DE70C7B937A7908A873F35BF9" xlink:to="loc_cvx_FloatingRateNotesdue2019Member_90FADC95F5E5E32DB71408A873F4D89D" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_TwoPointOneNineThreePercentNotesdue2019Member" xlink:label="loc_cvx_TwoPointOneNineThreePercentNotesdue2019Member_5BEA2CF94AE6B9B8D16F08A873F405E2" xlink:type="locator"/>

<link:definitionArc order="12" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_8B0FAC0DE70C7B937A7908A873F35BF9" xlink:to="loc_cvx_TwoPointOneNineThreePercentNotesdue2019Member_5BEA2CF94AE6B9B8D16F08A873F405E2" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_TwoPointFiveSixSixPercentNotesdue2023Member" xlink:label="loc_cvx_TwoPointFiveSixSixPercentNotesdue2023Member_C2390D8948FB81878F7F08A873F48D47" xlink:type="locator"/>

<link:definitionArc order="13" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_8B0FAC0DE70C7B937A7908A873F35BF9" xlink:to="loc_cvx_TwoPointFiveSixSixPercentNotesdue2023Member_C2390D8948FB81878F7F08A873F48D47" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_ThreePointThreeTwoSixPercentNotesdue2025Member" xlink:label="loc_cvx_ThreePointThreeTwoSixPercentNotesdue2025Member_1DC02A4569589507F84B08A873F52C20" xlink:type="locator"/>

<link:definitionArc order="14" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_8B0FAC0DE70C7B937A7908A873F35BF9" xlink:to="loc_cvx_ThreePointThreeTwoSixPercentNotesdue2025Member_1DC02A4569589507F84B08A873F52C20" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_TwoPointFourNineEightPercentNotesdue2022Member" xlink:label="loc_cvx_TwoPointFourNineEightPercentNotesdue2022Member_EA0100CE56762044300508A873F57996" xlink:type="locator"/>

<link:definitionArc order="15" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_8B0FAC0DE70C7B937A7908A873F35BF9" xlink:to="loc_cvx_TwoPointFourNineEightPercentNotesdue2022Member_EA0100CE56762044300508A873F57996" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_TwoPointFourOneOnePercentNotesdue2022Member" xlink:label="loc_cvx_TwoPointFourOneOnePercentNotesdue2022Member_B47CB4811E794C860BAF08A873F5AF92" xlink:type="locator"/>

<link:definitionArc order="16" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_8B0FAC0DE70C7B937A7908A873F35BF9" xlink:to="loc_cvx_TwoPointFourOneOnePercentNotesdue2022Member_B47CB4811E794C860BAF08A873F5AF92" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_FloatingRateNotesdue2021Member" xlink:label="loc_cvx_FloatingRateNotesdue2021Member_4A0A0303D0A537BEF2E808A873F5ABF2" xlink:type="locator"/>

<link:definitionArc order="17" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_8B0FAC0DE70C7B937A7908A873F35BF9" xlink:to="loc_cvx_FloatingRateNotesdue2021Member_4A0A0303D0A537BEF2E808A873F5ABF2" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_FloatingRateNotesdue2022Member" xlink:label="loc_cvx_FloatingRateNotesdue2022Member_9A2E367FA553812077FB08A873F52E59" xlink:type="locator"/>

<link:definitionArc order="18" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_8B0FAC0DE70C7B937A7908A873F35BF9" xlink:to="loc_cvx_FloatingRateNotesdue2022Member_9A2E367FA553812077FB08A873F52E59" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_OnePointNineNineOnePercentNotesdue2020Member" xlink:label="loc_cvx_OnePointNineNineOnePercentNotesdue2020Member_E566FB45B76A8B32C7DA08A873F59FE1" xlink:type="locator"/>

<link:definitionArc order="19" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_8B0FAC0DE70C7B937A7908A873F35BF9" xlink:to="loc_cvx_OnePointNineNineOnePercentNotesdue2020Member_E566FB45B76A8B32C7DA08A873F59FE1" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_OnePointSixEightSixPercentNotesdue2019Member" xlink:label="loc_cvx_OnePointSixEightSixPercentNotesdue2019Member_A5CC001BF5DE5D8822D008A873F5F3F5" xlink:type="locator"/>

<link:definitionArc order="20" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_8B0FAC0DE70C7B937A7908A873F35BF9" xlink:to="loc_cvx_OnePointSixEightSixPercentNotesdue2019Member_A5CC001BF5DE5D8822D008A873F5F3F5" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_FloatingRateNotesdue2020Member" xlink:label="loc_cvx_FloatingRateNotesdue2020Member_18C24476B46EBB41D0C208A873F55437" xlink:type="locator"/>

<link:definitionArc order="21" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_8B0FAC0DE70C7B937A7908A873F35BF9" xlink:to="loc_cvx_FloatingRateNotesdue2020Member_18C24476B46EBB41D0C208A873F55437" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_ThreePointFourZeroLoanDue2021Member" xlink:label="loc_cvx_ThreePointFourZeroLoanDue2021Member_31466B87237F7EBE68CA08A873F58765" xlink:type="locator"/>

<link:definitionArc order="22" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_8B0FAC0DE70C7B937A7908A873F35BF9" xlink:to="loc_cvx_ThreePointFourZeroLoanDue2021Member_31466B87237F7EBE68CA08A873F58765" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_DebentureOneMember" xlink:label="loc_cvx_DebentureOneMember_FE400D8EBE087DDCC31808A873F54117" xlink:type="locator"/>

<link:definitionArc order="23" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_8B0FAC0DE70C7B937A7908A873F35BF9" xlink:to="loc_cvx_DebentureOneMember_FE400D8EBE087DDCC31808A873F54117" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_DebentureTwoMember" xlink:label="loc_cvx_DebentureTwoMember_7CFC9870362C6158DE6F08A873F5270F" xlink:type="locator"/>

<link:definitionArc order="24" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_8B0FAC0DE70C7B937A7908A873F35BF9" xlink:to="loc_cvx_DebentureTwoMember_7CFC9870362C6158DE6F08A873F5270F" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_DebentureFourMember" xlink:label="loc_cvx_DebentureFourMember_090C7899F8C12BFBBEED08A873F508EE" xlink:type="locator"/>

<link:definitionArc order="25" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_8B0FAC0DE70C7B937A7908A873F35BF9" xlink:to="loc_cvx_DebentureFourMember_090C7899F8C12BFBBEED08A873F508EE" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_DebentureFiveMember" xlink:label="loc_cvx_DebentureFiveMember_073F8ADA8C6B7B6A7FF308A873F5F875" xlink:type="locator"/>

<link:definitionArc order="26" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_8B0FAC0DE70C7B937A7908A873F35BF9" xlink:to="loc_cvx_DebentureFiveMember_073F8ADA8C6B7B6A7FF308A873F5F875" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_DebentureSixMember" xlink:label="loc_cvx_DebentureSixMember_612F4A1112C2D940CA4008A873F52FC8" xlink:type="locator"/>

<link:definitionArc order="27" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_8B0FAC0DE70C7B937A7908A873F35BF9" xlink:to="loc_cvx_DebentureSixMember_612F4A1112C2D940CA4008A873F52FC8" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_Mediumtermnotesmaturingfrom2021to2038Member" xlink:label="loc_cvx_Mediumtermnotesmaturingfrom2021to2038Member_750ECF2480933B9C430808A873F5D707" xlink:type="locator"/>

<link:definitionArc order="28" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_8B0FAC0DE70C7B937A7908A873F35BF9" xlink:to="loc_cvx_Mediumtermnotesmaturingfrom2021to2038Member_750ECF2480933B9C430808A873F5D707" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_OnePointSevenOneEightPercentNotesdue2018Member" xlink:label="loc_cvx_OnePointSevenOneEightPercentNotesdue2018Member_21A64402E94107DA388408A873F5A772" xlink:type="locator"/>

<link:definitionArc order="29" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_8B0FAC0DE70C7B937A7908A873F35BF9" xlink:to="loc_cvx_OnePointSevenOneEightPercentNotesdue2018Member_21A64402E94107DA388408A873F5A772" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_OnePointThreeSixFivePercentNotesdue2018Member" xlink:label="loc_cvx_OnePointThreeSixFivePercentNotesdue2018Member_DC689CE28FC22EA7C14F08A873F670CE" xlink:type="locator"/>

<link:definitionArc order="30" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_8B0FAC0DE70C7B937A7908A873F35BF9" xlink:to="loc_cvx_OnePointThreeSixFivePercentNotesdue2018Member_DC689CE28FC22EA7C14F08A873F670CE" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_FloatingRateNotesdue2018Member" xlink:label="loc_cvx_FloatingRateNotesdue2018Member_C1751ED00B2C7E6DCC6908A873F68D1E" xlink:type="locator"/>

<link:definitionArc order="31" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_8B0FAC0DE70C7B937A7908A873F35BF9" xlink:to="loc_cvx_FloatingRateNotesdue2018Member_C1751ED00B2C7E6DCC6908A873F68D1E" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_OnePointSevenNineZeroPercentNotesdue2018Member" xlink:label="loc_cvx_OnePointSevenNineZeroPercentNotesdue2018Member_03574C21181EE1593A5308A873F6FEE9" xlink:type="locator"/>

<link:definitionArc order="32" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_8B0FAC0DE70C7B937A7908A873F35BF9" xlink:to="loc_cvx_OnePointSevenNineZeroPercentNotesdue2018Member_03574C21181EE1593A5308A873F6FEE9" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_AmortizingBankLoandue2018Member" xlink:label="loc_cvx_AmortizingBankLoandue2018Member_EB3392E45310309822C708A873F652A4" xlink:type="locator"/>

<link:definitionArc order="33" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_8B0FAC0DE70C7B937A7908A873F35BF9" xlink:to="loc_cvx_AmortizingBankLoandue2018Member_EB3392E45310309822C708A873F652A4" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LongTermDebt" xlink:label="loc_us-gaap_LongTermDebt_12954AECBB40CD01894B08A873F627D9" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_F4338375010DD346EA2408A873F6C540" xlink:to="loc_us-gaap_LongTermDebt_12954AECBB40CD01894B08A873F627D9" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_LongtermDebtCurrentMaturitiesExcludingUnamortizedDiscountPremium" xlink:label="loc_cvx_LongtermDebtCurrentMaturitiesExcludingUnamortizedDiscountPremium_2E2C4281AD81C8B153C008A873F6CDE3" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_F4338375010DD346EA2408A873F6C540" xlink:to="loc_cvx_LongtermDebtCurrentMaturitiesExcludingUnamortizedDiscountPremium_2E2C4281AD81C8B153C008A873F6CDE3" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShortTermDebtRefinancedAmount" xlink:label="loc_us-gaap_ShortTermDebtRefinancedAmount_9097F976D4659529210608A873F6B2D0" xlink:type="locator"/>

<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_F4338375010DD346EA2408A873F6C540" xlink:to="loc_us-gaap_ShortTermDebtRefinancedAmount_9097F976D4659529210608A873F6B2D0" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_DebtInstrumentUnamortizedDiscountPremiumandDebtIssuanceCostsLongternNet" xlink:label="loc_cvx_DebtInstrumentUnamortizedDiscountPremiumandDebtIssuanceCostsLongternNet_037017D2C4670A24AF8708A873F665CF" xlink:type="locator"/>

<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_F4338375010DD346EA2408A873F6C540" xlink:to="loc_cvx_DebtInstrumentUnamortizedDiscountPremiumandDebtIssuanceCostsLongternNet_037017D2C4670A24AF8708A873F665CF" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CapitalLeaseObligations" xlink:label="loc_us-gaap_CapitalLeaseObligations_FF383C0A258CD19934D408A873F615A6" xlink:type="locator"/>

<link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_F4338375010DD346EA2408A873F6C540" xlink:to="loc_us-gaap_CapitalLeaseObligations_FF383C0A258CD19934D408A873F615A6" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LongTermDebtAndCapitalLeaseObligationsIncludingCurrentMaturities" xlink:label="loc_us-gaap_LongTermDebtAndCapitalLeaseObligationsIncludingCurrentMaturities_D815F0CA2F5242970C9808A873F6633A" xlink:type="locator"/>

<link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_F4338375010DD346EA2408A873F6C540" xlink:to="loc_us-gaap_LongTermDebtAndCapitalLeaseObligationsIncludingCurrentMaturities_D815F0CA2F5242970C9808A873F6633A" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DebtInstrumentInterestRateStatedPercentage" xlink:label="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_55A59849D401A3C0717808A873F6C819" xlink:type="locator"/>

<link:definitionArc order="7" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_F4338375010DD346EA2408A873F6C540" xlink:to="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_55A59849D401A3C0717808A873F6C819" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths" xlink:label="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths_DDF42A8C2D9368A7544D08A873F66D25" xlink:type="locator"/>

<link:definitionArc order="8" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_F4338375010DD346EA2408A873F6C540" xlink:to="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths_DDF42A8C2D9368A7544D08A873F66D25" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo" xlink:label="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo_2E661D7ABDE6FE9C155408A873F63403" xlink:type="locator"/>

<link:definitionArc order="9" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_F4338375010DD346EA2408A873F6C540" xlink:to="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo_2E661D7ABDE6FE9C155408A873F63403" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree" xlink:label="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree_7BA048CD944A68EF8F6F08A873F6AF13" xlink:type="locator"/>

<link:definitionArc order="10" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_F4338375010DD346EA2408A873F6C540" xlink:to="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree_7BA048CD944A68EF8F6F08A873F6AF13" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour" xlink:label="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour_6AE7684BE0D76C1CE59008A873F6FA12" xlink:type="locator"/>

<link:definitionArc order="11" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_F4338375010DD346EA2408A873F6C540" xlink:to="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour_6AE7684BE0D76C1CE59008A873F6FA12" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive" xlink:label="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive_060AE8E14BF2D0CD354008A873F77DD8" xlink:type="locator"/>

<link:definitionArc order="12" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_F4338375010DD346EA2408A873F6C540" xlink:to="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive_060AE8E14BF2D0CD354008A873F77DD8" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive" xlink:label="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive_7F3EA66A8F84C40A746A08A873F717A1" xlink:type="locator"/>

<link:definitionArc order="13" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_F4338375010DD346EA2408A873F6C540" xlink:to="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive_7F3EA66A8F84C40A746A08A873F717A1" xlink:type="arc"/>

</link:definitionLink>

<link:definitionLink xlink:role="http://www.chevron.com/role/LongTermDebtTables" xlink:type="extended"/>

<link:definitionLink xlink:role="http://www.chevron.com/role/NewAccountingStandards" xlink:type="extended"/>

<link:definitionLink xlink:role="http://www.chevron.com/role/NewAccountingStandardsDetails" xlink:type="extended">

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems" xlink:label="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_F42945E28F336A606B1F1152F2C7C9BB" xlink:type="locator"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable" xlink:label="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_D8D2396DD08AC55AA8721152F2C227C6" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_F42945E28F336A606B1F1152F2C7C9BB" xlink:to="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_D8D2396DD08AC55AA8721152F2C227C6" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AdjustmentsForNewAccountingPronouncementsAxis" xlink:label="loc_us-gaap_AdjustmentsForNewAccountingPronouncementsAxis_B76A6515724FC5BDA64C1152F2C4E45B" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_D8D2396DD08AC55AA8721152F2C227C6" xlink:to="loc_us-gaap_AdjustmentsForNewAccountingPronouncementsAxis_B76A6515724FC5BDA64C1152F2C4E45B" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_TypeOfAdoptionMember" xlink:label="loc_us-gaap_TypeOfAdoptionMember_5CB968F8EBB577CFAECF1152F2C55B4F_default" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AdjustmentsForNewAccountingPronouncementsAxis_B76A6515724FC5BDA64C1152F2C4E45B" xlink:to="loc_us-gaap_TypeOfAdoptionMember_5CB968F8EBB577CFAECF1152F2C55B4F_default" xlink:type="arc"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AdjustmentsForNewAccountingPronouncementsAxis_B76A6515724FC5BDA64C1152F2C4E45B" xlink:to="loc_us-gaap_TypeOfAdoptionMember_5CB968F8EBB577CFAECF1152F2C55B4F" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AccountingStandardsUpdate201602Member" xlink:label="loc_us-gaap_AccountingStandardsUpdate201602Member_ABFEB266AE780FA1A4191152F2C5C095" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TypeOfAdoptionMember_5CB968F8EBB577CFAECF1152F2C55B4F" xlink:to="loc_us-gaap_AccountingStandardsUpdate201602Member_ABFEB266AE780FA1A4191152F2C5C095" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AccountingStandardsUpdate201707Member" xlink:label="loc_us-gaap_AccountingStandardsUpdate201707Member_5AC0F49C82CCD002953F1152F2C564D0" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TypeOfAdoptionMember_5CB968F8EBB577CFAECF1152F2C55B4F" xlink:to="loc_us-gaap_AccountingStandardsUpdate201707Member_5AC0F49C82CCD002953F1152F2C564D0" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StatementScenarioAxis" xlink:label="loc_us-gaap_StatementScenarioAxis_D78C14E540D60FAC11391152F2C6F670" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_D8D2396DD08AC55AA8721152F2C227C6" xlink:to="loc_us-gaap_StatementScenarioAxis_D78C14E540D60FAC11391152F2C6F670" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScenarioUnspecifiedDomain" xlink:label="loc_us-gaap_ScenarioUnspecifiedDomain_216AF93185CD7A947C821152F2C6DD7D_default" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementScenarioAxis_D78C14E540D60FAC11391152F2C6F670" xlink:to="loc_us-gaap_ScenarioUnspecifiedDomain_216AF93185CD7A947C821152F2C6DD7D_default" xlink:type="arc"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementScenarioAxis_D78C14E540D60FAC11391152F2C6F670" xlink:to="loc_us-gaap_ScenarioUnspecifiedDomain_216AF93185CD7A947C821152F2C6DD7D" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScenarioForecastMember" xlink:label="loc_us-gaap_ScenarioForecastMember_7E78D769E2A640234EA71152F2C6DC70" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScenarioUnspecifiedDomain_216AF93185CD7A947C821152F2C6DD7D" xlink:to="loc_us-gaap_ScenarioForecastMember_7E78D769E2A640234EA71152F2C6DC70" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_RangeAxis" xlink:label="loc_srt_RangeAxis_1A767600D0F2DED0DEE11152F2C74162" xlink:type="locator"/>

<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_D8D2396DD08AC55AA8721152F2C227C6" xlink:to="loc_srt_RangeAxis_1A767600D0F2DED0DEE11152F2C74162" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_RangeMember" xlink:label="loc_srt_RangeMember_FA4B437E32F7EC8561C51152F2C7F8E0_default" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_1A767600D0F2DED0DEE11152F2C74162" xlink:to="loc_srt_RangeMember_FA4B437E32F7EC8561C51152F2C7F8E0_default" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_RangeMember" xlink:label="loc_srt_RangeMember_FA4B437E32F7EC8561C51152F2C7F8E0" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_1A767600D0F2DED0DEE11152F2C74162" xlink:to="loc_srt_RangeMember_FA4B437E32F7EC8561C51152F2C7F8E0" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_MinimumMember" xlink:label="loc_srt_MinimumMember_AA784077C93B113028BD1152F2C73976" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_FA4B437E32F7EC8561C51152F2C7F8E0" xlink:to="loc_srt_MinimumMember_AA784077C93B113028BD1152F2C73976" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_MaximumMember" xlink:label="loc_srt_MaximumMember_620BC73F3AD2BDC7FADE1152F2C79A5D" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_FA4B437E32F7EC8561C51152F2C7F8E0" xlink:to="loc_srt_MaximumMember_620BC73F3AD2BDC7FADE1152F2C79A5D" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OperatingCostsAndExpenses" xlink:label="loc_us-gaap_OperatingCostsAndExpenses_D264EF1AD60466C4317C1152F2C8B6BC" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_F42945E28F336A606B1F1152F2C7C9BB" xlink:to="loc_us-gaap_OperatingCostsAndExpenses_D264EF1AD60466C4317C1152F2C8B6BC" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SellingGeneralAndAdministrativeExpense" xlink:label="loc_us-gaap_SellingGeneralAndAdministrativeExpense_8969FD695A11411A81FD1152F2C83B53" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_F42945E28F336A606B1F1152F2C7C9BB" xlink:to="loc_us-gaap_SellingGeneralAndAdministrativeExpense_8969FD695A11411A81FD1152F2C83B53" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_TaxCutsAndJobsActOf2017ReclassificationFromAOCIToRetainedEarningsTaxEffect" xlink:label="loc_cvx_TaxCutsAndJobsActOf2017ReclassificationFromAOCIToRetainedEarningsTaxEffect_FAE638BC74F1A6A4DB2B1152F2C8ECA3" xlink:type="locator"/>

<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_F42945E28F336A606B1F1152F2C7C9BB" xlink:to="loc_cvx_TaxCutsAndJobsActOf2017ReclassificationFromAOCIToRetainedEarningsTaxEffect_FAE638BC74F1A6A4DB2B1152F2C8ECA3" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OperatingLeaseRightOfUseAsset" xlink:label="loc_us-gaap_OperatingLeaseRightOfUseAsset_722DC982C1290DBB63931152F2C83043" xlink:type="locator"/>

<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_F42945E28F336A606B1F1152F2C7C9BB" xlink:to="loc_us-gaap_OperatingLeaseRightOfUseAsset_722DC982C1290DBB63931152F2C83043" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OperatingLeaseLiability" xlink:label="loc_us-gaap_OperatingLeaseLiability_F5E2CE2D0E38E753E6CE1152F2C98764" xlink:type="locator"/>

<link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_F42945E28F336A606B1F1152F2C7C9BB" xlink:to="loc_us-gaap_OperatingLeaseLiability_F5E2CE2D0E38E753E6CE1152F2C98764" xlink:type="arc"/>

</link:definitionLink>

<link:definitionLink xlink:role="http://www.chevron.com/role/OperatingSegmentsAndGeographicData" xlink:type="extended"/>

<link:definitionLink xlink:role="http://www.chevron.com/role/OperatingSegmentsAndGeographicDataNarrativeDetails" xlink:type="extended"/>

<link:definitionLink xlink:role="http://www.chevron.com/role/OperatingSegmentsAndGeographicDataSegementIncomeTaxesDetails" xlink:type="extended">

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SegmentReportingInformationLineItems" xlink:label="loc_us-gaap_SegmentReportingInformationLineItems_E31B8CC506A39EFCD0BB9FA002E06659" xlink:type="locator"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable" xlink:label="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_9AD72B3910DD25637B009FA002DDD90C" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_E31B8CC506A39EFCD0BB9FA002E06659" xlink:to="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_9AD72B3910DD25637B009FA002DDD90C" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>

<link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_ConsolidationItemsAxis" xlink:label="loc_srt_ConsolidationItemsAxis_9DD7522086C2E5233FBE9FA002DDEF41" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_9AD72B3910DD25637B009FA002DDD90C" xlink:to="loc_srt_ConsolidationItemsAxis_9DD7522086C2E5233FBE9FA002DDEF41" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_ConsolidationItemsDomain" xlink:label="loc_srt_ConsolidationItemsDomain_93C63D95E03863FF23279FA002DED89A_default" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ConsolidationItemsAxis_9DD7522086C2E5233FBE9FA002DDEF41" xlink:to="loc_srt_ConsolidationItemsDomain_93C63D95E03863FF23279FA002DED89A_default" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_ConsolidationItemsDomain" xlink:label="loc_srt_ConsolidationItemsDomain_93C63D95E03863FF23279FA002DED89A" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ConsolidationItemsAxis_9DD7522086C2E5233FBE9FA002DDEF41" xlink:to="loc_srt_ConsolidationItemsDomain_93C63D95E03863FF23279FA002DED89A" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OperatingSegmentsMember" xlink:label="loc_us-gaap_OperatingSegmentsMember_C417BFB74AEBFB31B63A9FA002DEFD72" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ConsolidationItemsDomain_93C63D95E03863FF23279FA002DED89A" xlink:to="loc_us-gaap_OperatingSegmentsMember_C417BFB74AEBFB31B63A9FA002DEFD72" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CorporateNonSegmentMember" xlink:label="loc_us-gaap_CorporateNonSegmentMember_ABE7DAA984D724B3417A9FA002DE517C" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ConsolidationItemsDomain_93C63D95E03863FF23279FA002DED89A" xlink:to="loc_us-gaap_CorporateNonSegmentMember_ABE7DAA984D724B3417A9FA002DE517C" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StatementBusinessSegmentsAxis" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_39B8252DDB212BB7CFD09FA002DF2B63" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_9AD72B3910DD25637B009FA002DDD90C" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_39B8252DDB212BB7CFD09FA002DF2B63" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SegmentDomain" xlink:label="loc_us-gaap_SegmentDomain_188410770AD8ACAC5F569FA002DF4B1C_default" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_39B8252DDB212BB7CFD09FA002DF2B63" xlink:to="loc_us-gaap_SegmentDomain_188410770AD8ACAC5F569FA002DF4B1C_default" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SegmentDomain" xlink:label="loc_us-gaap_SegmentDomain_188410770AD8ACAC5F569FA002DF4B1C" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_39B8252DDB212BB7CFD09FA002DF2B63" xlink:to="loc_us-gaap_SegmentDomain_188410770AD8ACAC5F569FA002DF4B1C" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_UpstreamEquipmentMember" xlink:label="loc_us-gaap_UpstreamEquipmentMember_0461F29912548D4265689FA002DF8C53" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_188410770AD8ACAC5F569FA002DF4B1C" xlink:to="loc_us-gaap_UpstreamEquipmentMember_0461F29912548D4265689FA002DF8C53" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DownstreamEquipmentMember" xlink:label="loc_us-gaap_DownstreamEquipmentMember_346868EE87EB87B9FA569FA002DFFACB" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_188410770AD8ACAC5F569FA002DF4B1C" xlink:to="loc_us-gaap_DownstreamEquipmentMember_346868EE87EB87B9FA569FA002DFFACB" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_StatementGeographicalAxis" xlink:label="loc_srt_StatementGeographicalAxis_4318ADB7CF5D55ADB5439FA002DF7700" xlink:type="locator"/>

<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_9AD72B3910DD25637B009FA002DDD90C" xlink:to="loc_srt_StatementGeographicalAxis_4318ADB7CF5D55ADB5439FA002DF7700" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_SegmentGeographicalDomain" xlink:label="loc_srt_SegmentGeographicalDomain_6F45553D19D8DD3A85EF9FA002E093BD_default" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_StatementGeographicalAxis_4318ADB7CF5D55ADB5439FA002DF7700" xlink:to="loc_srt_SegmentGeographicalDomain_6F45553D19D8DD3A85EF9FA002E093BD_default" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_SegmentGeographicalDomain" xlink:label="loc_srt_SegmentGeographicalDomain_6F45553D19D8DD3A85EF9FA002E093BD" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_StatementGeographicalAxis_4318ADB7CF5D55ADB5439FA002DF7700" xlink:to="loc_srt_SegmentGeographicalDomain_6F45553D19D8DD3A85EF9FA002E093BD" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.sec.gov/country/2017/country-2017-01-31.xsd#country_US" xlink:label="loc_country_US_42E892668798E59167419FA002E0DCE2" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_6F45553D19D8DD3A85EF9FA002E093BD" xlink:to="loc_country_US_42E892668798E59167419FA002E0DCE2" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NonUsMember" xlink:label="loc_us-gaap_NonUsMember_B39A4FC30C4FABF031149FA002E08C0D" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_6F45553D19D8DD3A85EF9FA002E093BD" xlink:to="loc_us-gaap_NonUsMember_B39A4FC30C4FABF031149FA002E08C0D" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncomeTaxExpenseBenefit" xlink:label="loc_us-gaap_IncomeTaxExpenseBenefit_6B3B11855DAB4E15B5009FA002E10BE4" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_E31B8CC506A39EFCD0BB9FA002E06659" xlink:to="loc_us-gaap_IncomeTaxExpenseBenefit_6B3B11855DAB4E15B5009FA002E10BE4" xlink:type="arc"/>

</link:definitionLink>

<link:definitionLink xlink:role="http://www.chevron.com/role/OperatingSegmentsAndGeographicDataSegmentAssetsDetails" xlink:type="extended">

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SegmentReportingInformationLineItems" xlink:label="loc_us-gaap_SegmentReportingInformationLineItems_51599DF76A25AB19296C7F3C56238648" xlink:type="locator"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable" xlink:label="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_75C39C77AB7AD3A7056F7F3C562053F3" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_51599DF76A25AB19296C7F3C56238648" xlink:to="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_75C39C77AB7AD3A7056F7F3C562053F3" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>

<link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_ConsolidationItemsAxis" xlink:label="loc_srt_ConsolidationItemsAxis_0A9F57E7433634B1A7CB7F3C562027D6" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_75C39C77AB7AD3A7056F7F3C562053F3" xlink:to="loc_srt_ConsolidationItemsAxis_0A9F57E7433634B1A7CB7F3C562027D6" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_ConsolidationItemsDomain" xlink:label="loc_srt_ConsolidationItemsDomain_561624956B8A914DF0B27F3C56203D26_default" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ConsolidationItemsAxis_0A9F57E7433634B1A7CB7F3C562027D6" xlink:to="loc_srt_ConsolidationItemsDomain_561624956B8A914DF0B27F3C56203D26_default" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_ConsolidationItemsDomain" xlink:label="loc_srt_ConsolidationItemsDomain_561624956B8A914DF0B27F3C56203D26" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ConsolidationItemsAxis_0A9F57E7433634B1A7CB7F3C562027D6" xlink:to="loc_srt_ConsolidationItemsDomain_561624956B8A914DF0B27F3C56203D26" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OperatingSegmentsMember" xlink:label="loc_us-gaap_OperatingSegmentsMember_9FF0D056F6B6478495697F3C5621088B" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ConsolidationItemsDomain_561624956B8A914DF0B27F3C56203D26" xlink:to="loc_us-gaap_OperatingSegmentsMember_9FF0D056F6B6478495697F3C5621088B" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_MaterialReconcilingItemsMember" xlink:label="loc_us-gaap_MaterialReconcilingItemsMember_2BDDE20FCA973547ACE37F3C5621F5A6" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ConsolidationItemsDomain_561624956B8A914DF0B27F3C56203D26" xlink:to="loc_us-gaap_MaterialReconcilingItemsMember_2BDDE20FCA973547ACE37F3C5621F5A6" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StatementBusinessSegmentsAxis" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_45EC06EFDE0DAEAA21427F3C56218770" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_75C39C77AB7AD3A7056F7F3C562053F3" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_45EC06EFDE0DAEAA21427F3C56218770" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SegmentDomain" xlink:label="loc_us-gaap_SegmentDomain_D3F98418ABD223BF189B7F3C56211D1F_default" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_45EC06EFDE0DAEAA21427F3C56218770" xlink:to="loc_us-gaap_SegmentDomain_D3F98418ABD223BF189B7F3C56211D1F_default" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SegmentDomain" xlink:label="loc_us-gaap_SegmentDomain_D3F98418ABD223BF189B7F3C56211D1F" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_45EC06EFDE0DAEAA21427F3C56218770" xlink:to="loc_us-gaap_SegmentDomain_D3F98418ABD223BF189B7F3C56211D1F" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_UpstreamEquipmentMember" xlink:label="loc_us-gaap_UpstreamEquipmentMember_36E75730E7AC5444A2AC7F3C56221DB4" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_D3F98418ABD223BF189B7F3C56211D1F" xlink:to="loc_us-gaap_UpstreamEquipmentMember_36E75730E7AC5444A2AC7F3C56221DB4" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DownstreamEquipmentMember" xlink:label="loc_us-gaap_DownstreamEquipmentMember_239E2B869064B637139A7F3C56223A47" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_D3F98418ABD223BF189B7F3C56211D1F" xlink:to="loc_us-gaap_DownstreamEquipmentMember_239E2B869064B637139A7F3C56223A47" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_StatementGeographicalAxis" xlink:label="loc_srt_StatementGeographicalAxis_A5CBBE55E288F10737277F3C562287E3" xlink:type="locator"/>

<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_75C39C77AB7AD3A7056F7F3C562053F3" xlink:to="loc_srt_StatementGeographicalAxis_A5CBBE55E288F10737277F3C562287E3" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_SegmentGeographicalDomain" xlink:label="loc_srt_SegmentGeographicalDomain_EE37AC8800C70BE8DE477F3C5622554C_default" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_StatementGeographicalAxis_A5CBBE55E288F10737277F3C562287E3" xlink:to="loc_srt_SegmentGeographicalDomain_EE37AC8800C70BE8DE477F3C5622554C_default" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_SegmentGeographicalDomain" xlink:label="loc_srt_SegmentGeographicalDomain_EE37AC8800C70BE8DE477F3C5622554C" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_StatementGeographicalAxis_A5CBBE55E288F10737277F3C562287E3" xlink:to="loc_srt_SegmentGeographicalDomain_EE37AC8800C70BE8DE477F3C5622554C" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.sec.gov/country/2017/country-2017-01-31.xsd#country_US" xlink:label="loc_country_US_6D48DEE324F87317CD5B7F3C562393EE" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_EE37AC8800C70BE8DE477F3C5622554C" xlink:to="loc_country_US_6D48DEE324F87317CD5B7F3C562393EE" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NonUsMember" xlink:label="loc_us-gaap_NonUsMember_C44F2F49F692CF5C87E67F3C5623DA37" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_EE37AC8800C70BE8DE477F3C5622554C" xlink:to="loc_us-gaap_NonUsMember_C44F2F49F692CF5C87E67F3C5623DA37" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_Assets" xlink:label="loc_us-gaap_Assets_BF1913B4A39FB6F59DA07F3C5623CA19" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_51599DF76A25AB19296C7F3C56238648" xlink:to="loc_us-gaap_Assets_BF1913B4A39FB6F59DA07F3C5623CA19" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_Goodwill" xlink:label="loc_us-gaap_Goodwill_F7DE1ABD1B5BE1DB78B27F3C5623BA74" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_51599DF76A25AB19296C7F3C56238648" xlink:to="loc_us-gaap_Goodwill_F7DE1ABD1B5BE1DB78B27F3C5623BA74" xlink:type="arc"/>

</link:definitionLink>

<link:definitionLink xlink:role="http://www.chevron.com/role/OperatingSegmentsAndGeographicDataSegmentEarningsDetails" xlink:type="extended">

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SegmentReportingInformationLineItems" xlink:label="loc_us-gaap_SegmentReportingInformationLineItems_49BB416C2B0A221AF4D408A8746DDF29" xlink:type="locator"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable" xlink:label="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_35B5DC76B308224C2CB908A8746CA86B" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_49BB416C2B0A221AF4D408A8746DDF29" xlink:to="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_35B5DC76B308224C2CB908A8746CA86B" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>

<link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_ConsolidationItemsAxis" xlink:label="loc_srt_ConsolidationItemsAxis_EA5958BA9E2CD12665EA08A8746C2698" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_35B5DC76B308224C2CB908A8746CA86B" xlink:to="loc_srt_ConsolidationItemsAxis_EA5958BA9E2CD12665EA08A8746C2698" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_ConsolidationItemsDomain" xlink:label="loc_srt_ConsolidationItemsDomain_E4DBA0902C0CE8498B7B08A8746C0E73_default" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ConsolidationItemsAxis_EA5958BA9E2CD12665EA08A8746C2698" xlink:to="loc_srt_ConsolidationItemsDomain_E4DBA0902C0CE8498B7B08A8746C0E73_default" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_ConsolidationItemsDomain" xlink:label="loc_srt_ConsolidationItemsDomain_E4DBA0902C0CE8498B7B08A8746C0E73" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ConsolidationItemsAxis_EA5958BA9E2CD12665EA08A8746C2698" xlink:to="loc_srt_ConsolidationItemsDomain_E4DBA0902C0CE8498B7B08A8746C0E73" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OperatingSegmentsMember" xlink:label="loc_us-gaap_OperatingSegmentsMember_AF6B65291EAFE7F7110808A8746C987B" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ConsolidationItemsDomain_E4DBA0902C0CE8498B7B08A8746C0E73" xlink:to="loc_us-gaap_OperatingSegmentsMember_AF6B65291EAFE7F7110808A8746C987B" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_MaterialReconcilingItemsMember" xlink:label="loc_us-gaap_MaterialReconcilingItemsMember_7C010E7899B7B0141B2F08A8746C9978" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ConsolidationItemsDomain_E4DBA0902C0CE8498B7B08A8746C0E73" xlink:to="loc_us-gaap_MaterialReconcilingItemsMember_7C010E7899B7B0141B2F08A8746C9978" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StatementBusinessSegmentsAxis" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_E9C5B166B4E125CC974308A8746C2EA8" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_35B5DC76B308224C2CB908A8746CA86B" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_E9C5B166B4E125CC974308A8746C2EA8" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SegmentDomain" xlink:label="loc_us-gaap_SegmentDomain_5497F41C22BCB8DEE95808A8746C5E2F_default" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_E9C5B166B4E125CC974308A8746C2EA8" xlink:to="loc_us-gaap_SegmentDomain_5497F41C22BCB8DEE95808A8746C5E2F_default" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SegmentDomain" xlink:label="loc_us-gaap_SegmentDomain_5497F41C22BCB8DEE95808A8746C5E2F" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_E9C5B166B4E125CC974308A8746C2EA8" xlink:to="loc_us-gaap_SegmentDomain_5497F41C22BCB8DEE95808A8746C5E2F" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_UpstreamEquipmentMember" xlink:label="loc_us-gaap_UpstreamEquipmentMember_B2F0473FD0428A5377FD08A8746C8B1B" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_5497F41C22BCB8DEE95808A8746C5E2F" xlink:to="loc_us-gaap_UpstreamEquipmentMember_B2F0473FD0428A5377FD08A8746C8B1B" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DownstreamEquipmentMember" xlink:label="loc_us-gaap_DownstreamEquipmentMember_5DF476CC757B151272A608A8746CD1FD" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_5497F41C22BCB8DEE95808A8746C5E2F" xlink:to="loc_us-gaap_DownstreamEquipmentMember_5DF476CC757B151272A608A8746CD1FD" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_StatementGeographicalAxis" xlink:label="loc_srt_StatementGeographicalAxis_2D4CF04EABD2DA48DD4108A8746DB1BB" xlink:type="locator"/>

<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_35B5DC76B308224C2CB908A8746CA86B" xlink:to="loc_srt_StatementGeographicalAxis_2D4CF04EABD2DA48DD4108A8746DB1BB" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_SegmentGeographicalDomain" xlink:label="loc_srt_SegmentGeographicalDomain_ED1AC865087DEC7EC94208A8746DE552_default" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_StatementGeographicalAxis_2D4CF04EABD2DA48DD4108A8746DB1BB" xlink:to="loc_srt_SegmentGeographicalDomain_ED1AC865087DEC7EC94208A8746DE552_default" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_SegmentGeographicalDomain" xlink:label="loc_srt_SegmentGeographicalDomain_ED1AC865087DEC7EC94208A8746DE552" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_StatementGeographicalAxis_2D4CF04EABD2DA48DD4108A8746DB1BB" xlink:to="loc_srt_SegmentGeographicalDomain_ED1AC865087DEC7EC94208A8746DE552" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.sec.gov/country/2017/country-2017-01-31.xsd#country_US" xlink:label="loc_country_US_F072CCD71A7BFCDFC9C708A8746D1F9D" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_ED1AC865087DEC7EC94208A8746DE552" xlink:to="loc_country_US_F072CCD71A7BFCDFC9C708A8746D1F9D" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NonUsMember" xlink:label="loc_us-gaap_NonUsMember_30A1F530256CA45FE21908A8746DD4DC" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_ED1AC865087DEC7EC94208A8746DE552" xlink:to="loc_us-gaap_NonUsMember_30A1F530256CA45FE21908A8746DD4DC" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NetIncomeLoss" xlink:label="loc_us-gaap_NetIncomeLoss_FCF7B27B3A65A38A5E5B08A8746D610C" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_49BB416C2B0A221AF4D408A8746DDF29" xlink:to="loc_us-gaap_NetIncomeLoss_FCF7B27B3A65A38A5E5B08A8746D610C" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_InterestExpense" xlink:label="loc_us-gaap_InterestExpense_7C72FB04ADE1A5CF23EB08A8746D43C4" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_49BB416C2B0A221AF4D408A8746DDF29" xlink:to="loc_us-gaap_InterestExpense_7C72FB04ADE1A5CF23EB08A8746D43C4" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_InvestmentIncomeInterest" xlink:label="loc_us-gaap_InvestmentIncomeInterest_7AD3E152C11330C80F2508A8746D28CD" xlink:type="locator"/>

<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_49BB416C2B0A221AF4D408A8746DDF29" xlink:to="loc_us-gaap_InvestmentIncomeInterest_7AD3E152C11330C80F2508A8746D28CD" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_SegmentEarningsOtherIncomeExpense" xlink:label="loc_cvx_SegmentEarningsOtherIncomeExpense_5FD507733E847DC591C608A8746DD9BF" xlink:type="locator"/>

<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_49BB416C2B0A221AF4D408A8746DDF29" xlink:to="loc_cvx_SegmentEarningsOtherIncomeExpense_5FD507733E847DC591C608A8746DD9BF" xlink:type="arc"/>

</link:definitionLink>

<link:definitionLink xlink:role="http://www.chevron.com/role/OperatingSegmentsAndGeographicDataSegmentSalesAndOperatingRevenuesDetails" xlink:type="extended">

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SegmentReportingInformationLineItems" xlink:label="loc_us-gaap_SegmentReportingInformationLineItems_F2F574836B8CF0D7366308A87463F85C" xlink:type="locator"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable" xlink:label="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_7FAD2D3601BDCE83F96F08A87462C24B" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_F2F574836B8CF0D7366308A87463F85C" xlink:to="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_7FAD2D3601BDCE83F96F08A87462C24B" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StatementBusinessSegmentsAxis" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_EB69976E6608BB1E762508A874627C51" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_7FAD2D3601BDCE83F96F08A87462C24B" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_EB69976E6608BB1E762508A874627C51" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SegmentDomain" xlink:label="loc_us-gaap_SegmentDomain_A7E48ADE7F81EFE0450F08A87462AFCF_default" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_EB69976E6608BB1E762508A874627C51" xlink:to="loc_us-gaap_SegmentDomain_A7E48ADE7F81EFE0450F08A87462AFCF_default" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SegmentDomain" xlink:label="loc_us-gaap_SegmentDomain_A7E48ADE7F81EFE0450F08A87462AFCF" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_EB69976E6608BB1E762508A874627C51" xlink:to="loc_us-gaap_SegmentDomain_A7E48ADE7F81EFE0450F08A87462AFCF" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_UpstreamEquipmentMember" xlink:label="loc_us-gaap_UpstreamEquipmentMember_C695808F521F0CFCEA3A08A874629C70" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_A7E48ADE7F81EFE0450F08A87462AFCF" xlink:to="loc_us-gaap_UpstreamEquipmentMember_C695808F521F0CFCEA3A08A874629C70" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DownstreamEquipmentMember" xlink:label="loc_us-gaap_DownstreamEquipmentMember_F2D6FE8B4E6A797CA4BB08A87462E02D" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_A7E48ADE7F81EFE0450F08A87462AFCF" xlink:to="loc_us-gaap_DownstreamEquipmentMember_F2D6FE8B4E6A797CA4BB08A87462E02D" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_StatementGeographicalAxis" xlink:label="loc_srt_StatementGeographicalAxis_6520253537FE7B3ACFE308A874621D38" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_7FAD2D3601BDCE83F96F08A87462C24B" xlink:to="loc_srt_StatementGeographicalAxis_6520253537FE7B3ACFE308A874621D38" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_SegmentGeographicalDomain" xlink:label="loc_srt_SegmentGeographicalDomain_510DBEDDD6F66A49070208A8746296F1_default" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_StatementGeographicalAxis_6520253537FE7B3ACFE308A874621D38" xlink:to="loc_srt_SegmentGeographicalDomain_510DBEDDD6F66A49070208A8746296F1_default" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_SegmentGeographicalDomain" xlink:label="loc_srt_SegmentGeographicalDomain_510DBEDDD6F66A49070208A8746296F1" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_StatementGeographicalAxis_6520253537FE7B3ACFE308A874621D38" xlink:to="loc_srt_SegmentGeographicalDomain_510DBEDDD6F66A49070208A8746296F1" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.sec.gov/country/2017/country-2017-01-31.xsd#country_US" xlink:label="loc_country_US_08C6BAE3ABF2F873E7CD08A87462073E" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_510DBEDDD6F66A49070208A8746296F1" xlink:to="loc_country_US_08C6BAE3ABF2F873E7CD08A87462073E" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NonUsMember" xlink:label="loc_us-gaap_NonUsMember_ADBB32457C9858D8EA0D08A87462DE44" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_510DBEDDD6F66A49070208A8746296F1" xlink:to="loc_us-gaap_NonUsMember_ADBB32457C9858D8EA0D08A87462DE44" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_ConsolidationItemsAxis" xlink:label="loc_srt_ConsolidationItemsAxis_6F30268F893EB420887308A8746227C9" xlink:type="locator"/>

<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_7FAD2D3601BDCE83F96F08A87462C24B" xlink:to="loc_srt_ConsolidationItemsAxis_6F30268F893EB420887308A8746227C9" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_ConsolidationItemsDomain" xlink:label="loc_srt_ConsolidationItemsDomain_6F051808177D88CE368C08A87462D0EE_default" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ConsolidationItemsAxis_6F30268F893EB420887308A8746227C9" xlink:to="loc_srt_ConsolidationItemsDomain_6F051808177D88CE368C08A87462D0EE_default" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_ConsolidationItemsDomain" xlink:label="loc_srt_ConsolidationItemsDomain_6F051808177D88CE368C08A87462D0EE" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ConsolidationItemsAxis_6F30268F893EB420887308A8746227C9" xlink:to="loc_srt_ConsolidationItemsDomain_6F051808177D88CE368C08A87462D0EE" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OperatingSegmentsMember" xlink:label="loc_us-gaap_OperatingSegmentsMember_E6F93E17C1807D0942A708A8746214A1" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ConsolidationItemsDomain_6F051808177D88CE368C08A87462D0EE" xlink:to="loc_us-gaap_OperatingSegmentsMember_E6F93E17C1807D0942A708A8746214A1" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IntersegmentEliminationMember" xlink:label="loc_us-gaap_IntersegmentEliminationMember_5D0A094E7CAC8809B90A08A874635929" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ConsolidationItemsDomain_6F051808177D88CE368C08A87462D0EE" xlink:to="loc_us-gaap_IntersegmentEliminationMember_5D0A094E7CAC8809B90A08A874635929" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_MaterialReconcilingItemsMember" xlink:label="loc_us-gaap_MaterialReconcilingItemsMember_92D35AD9A67744E3EB4F08A87463DF11" xlink:type="locator"/>

<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ConsolidationItemsDomain_6F051808177D88CE368C08A87462D0EE" xlink:to="loc_us-gaap_MaterialReconcilingItemsMember_92D35AD9A67744E3EB4F08A87463DF11" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CorporateNonSegmentMember" xlink:label="loc_us-gaap_CorporateNonSegmentMember_49A843B225BF1D54E74B08A87463C316" xlink:type="locator"/>

<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ConsolidationItemsDomain_6F051808177D88CE368C08A87462D0EE" xlink:to="loc_us-gaap_CorporateNonSegmentMember_49A843B225BF1D54E74B08A87463C316" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_CorporateAndEliminationsMember" xlink:label="loc_cvx_CorporateAndEliminationsMember_40230116D3A6FA7C69FE08A874631C66" xlink:type="locator"/>

<link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ConsolidationItemsDomain_6F051808177D88CE368C08A87462D0EE" xlink:to="loc_cvx_CorporateAndEliminationsMember_40230116D3A6FA7C69FE08A874631C66" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax" xlink:label="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_BDF2DA7820F2B9BC0DA708A874636864" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_F2F574836B8CF0D7366308A87463F85C" xlink:to="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_BDF2DA7820F2B9BC0DA708A874636864" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RevenueFromContractWithCustomerIncludingAssessedTax" xlink:label="loc_us-gaap_RevenueFromContractWithCustomerIncludingAssessedTax_4F65B45885501D48CF4308A874639A1F" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_F2F574836B8CF0D7366308A87463F85C" xlink:to="loc_us-gaap_RevenueFromContractWithCustomerIncludingAssessedTax_4F65B45885501D48CF4308A874639A1F" xlink:type="arc"/>

</link:definitionLink>

<link:definitionLink xlink:role="http://www.chevron.com/role/OperatingSegmentsAndGeographicDataTables" xlink:type="extended"/>

<link:definitionLink xlink:role="http://www.chevron.com/role/OtherContingenciesAndCommitments" xlink:type="extended"/>

<link:definitionLink xlink:role="http://www.chevron.com/role/OtherContingenciesAndCommitmentsDetails" xlink:type="extended">

<link:loc xlink:href="cvx-20181231.xsd#cvx_OtherContingenciesAndCommitmentsLineItems" xlink:label="loc_cvx_OtherContingenciesAndCommitmentsLineItems_6ECB69D674B43403DA29A4DEEDD8C282" xlink:type="locator"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_OtherContingenciesAndCommitmentsTable" xlink:label="loc_cvx_OtherContingenciesAndCommitmentsTable_E8175968275BE1E53199A4DEEDD8A191" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_cvx_OtherContingenciesAndCommitmentsLineItems_6ECB69D674B43403DA29A4DEEDD8C282" xlink:to="loc_cvx_OtherContingenciesAndCommitmentsTable_E8175968275BE1E53199A4DEEDD8A191" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_GuaranteeObligationsByNatureAxis" xlink:label="loc_us-gaap_GuaranteeObligationsByNatureAxis_99D786C607F50A88FF09A4DEEDD87792" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_cvx_OtherContingenciesAndCommitmentsTable_E8175968275BE1E53199A4DEEDD8A191" xlink:to="loc_us-gaap_GuaranteeObligationsByNatureAxis_99D786C607F50A88FF09A4DEEDD87792" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_GuaranteeObligationsNatureDomain" xlink:label="loc_us-gaap_GuaranteeObligationsNatureDomain_0C8C06DBCC9C36930805A4DEEDD8537B_default" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_GuaranteeObligationsByNatureAxis_99D786C607F50A88FF09A4DEEDD87792" xlink:to="loc_us-gaap_GuaranteeObligationsNatureDomain_0C8C06DBCC9C36930805A4DEEDD8537B_default" xlink:type="arc"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_GuaranteeObligationsByNatureAxis_99D786C607F50A88FF09A4DEEDD87792" xlink:to="loc_us-gaap_GuaranteeObligationsNatureDomain_0C8C06DBCC9C36930805A4DEEDD8537B" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_FinancingArrangementMember" xlink:label="loc_cvx_FinancingArrangementMember_93146D2AA9B90DAAA9BCA4DEEDD8D867" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GuaranteeObligationsNatureDomain_0C8C06DBCC9C36930805A4DEEDD8537B" xlink:to="loc_cvx_FinancingArrangementMember_93146D2AA9B90DAAA9BCA4DEEDD8D867" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_AffiliatesMember" xlink:label="loc_cvx_AffiliatesMember_BACB58A6F12BF886A72BA4DEEDD8F3F4" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GuaranteeObligationsNatureDomain_0C8C06DBCC9C36930805A4DEEDD8537B" xlink:to="loc_cvx_AffiliatesMember_BACB58A6F12BF886A72BA4DEEDD8F3F4" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_StatementGeographicalAxis" xlink:label="loc_srt_StatementGeographicalAxis_C1E59ED299756B72945FA4DEEDD84217" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_cvx_OtherContingenciesAndCommitmentsTable_E8175968275BE1E53199A4DEEDD8A191" xlink:to="loc_srt_StatementGeographicalAxis_C1E59ED299756B72945FA4DEEDD84217" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_SegmentGeographicalDomain" xlink:label="loc_srt_SegmentGeographicalDomain_804E5BDD07195FAC5E22A4DEEDD85C72_default" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_StatementGeographicalAxis_C1E59ED299756B72945FA4DEEDD84217" xlink:to="loc_srt_SegmentGeographicalDomain_804E5BDD07195FAC5E22A4DEEDD85C72_default" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_SegmentGeographicalDomain" xlink:label="loc_srt_SegmentGeographicalDomain_804E5BDD07195FAC5E22A4DEEDD85C72" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_StatementGeographicalAxis_C1E59ED299756B72945FA4DEEDD84217" xlink:to="loc_srt_SegmentGeographicalDomain_804E5BDD07195FAC5E22A4DEEDD85C72" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.sec.gov/country/2017/country-2017-01-31.xsd#country_US" xlink:label="loc_country_US_7AEC7C5B01A6074CA20DA4DEEDD8699E" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_804E5BDD07195FAC5E22A4DEEDD85C72" xlink:to="loc_country_US_7AEC7C5B01A6074CA20DA4DEEDD8699E" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NonUsMember" xlink:label="loc_us-gaap_NonUsMember_08BA9E9EE18922376BBCA4DEEDD8B310" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_804E5BDD07195FAC5E22A4DEEDD85C72" xlink:to="loc_us-gaap_NonUsMember_08BA9E9EE18922376BBCA4DEEDD8B310" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StatementBusinessSegmentsAxis" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_B1E17DC348B5E0478294A4DEEDD87C47" xlink:type="locator"/>

<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_cvx_OtherContingenciesAndCommitmentsTable_E8175968275BE1E53199A4DEEDD8A191" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_B1E17DC348B5E0478294A4DEEDD87C47" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SegmentDomain" xlink:label="loc_us-gaap_SegmentDomain_0A117BB36679ABD52DD4A4DEEDD83639_default" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_B1E17DC348B5E0478294A4DEEDD87C47" xlink:to="loc_us-gaap_SegmentDomain_0A117BB36679ABD52DD4A4DEEDD83639_default" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SegmentDomain" xlink:label="loc_us-gaap_SegmentDomain_0A117BB36679ABD52DD4A4DEEDD83639" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_B1E17DC348B5E0478294A4DEEDD87C47" xlink:to="loc_us-gaap_SegmentDomain_0A117BB36679ABD52DD4A4DEEDD83639" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DownstreamEquipmentMember" xlink:label="loc_us-gaap_DownstreamEquipmentMember_BFCF482EC7EB35F22743A4DEEDD87BB2" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_0A117BB36679ABD52DD4A4DEEDD83639" xlink:to="loc_us-gaap_DownstreamEquipmentMember_BFCF482EC7EB35F22743A4DEEDD87BB2" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_UpstreamEquipmentMember" xlink:label="loc_us-gaap_UpstreamEquipmentMember_5C1EC018FB2D84DF1E45A4DEEDD8B586" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_0A117BB36679ABD52DD4A4DEEDD83639" xlink:to="loc_us-gaap_UpstreamEquipmentMember_5C1EC018FB2D84DF1E45A4DEEDD8B586" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_OtherContingenciesAndCommitmentsAxis" xlink:label="loc_cvx_OtherContingenciesAndCommitmentsAxis_1D9D9FE5746A8A3A29D3A4FE15312986" xlink:type="locator"/>

<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_cvx_OtherContingenciesAndCommitmentsTable_E8175968275BE1E53199A4DEEDD8A191" xlink:to="loc_cvx_OtherContingenciesAndCommitmentsAxis_1D9D9FE5746A8A3A29D3A4FE15312986" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_OtherContingenciesAndCommitmentsDomain" xlink:label="loc_cvx_OtherContingenciesAndCommitmentsDomain_551A4C3EC12BAAC2BDB4A4FE155FCB79_default" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_cvx_OtherContingenciesAndCommitmentsAxis_1D9D9FE5746A8A3A29D3A4FE15312986" xlink:to="loc_cvx_OtherContingenciesAndCommitmentsDomain_551A4C3EC12BAAC2BDB4A4FE155FCB79_default" xlink:type="arc"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_cvx_OtherContingenciesAndCommitmentsAxis_1D9D9FE5746A8A3A29D3A4FE15312986" xlink:to="loc_cvx_OtherContingenciesAndCommitmentsDomain_551A4C3EC12BAAC2BDB4A4FE155FCB79" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_SitesWithPotentialRemediationActivitiesMember" xlink:label="loc_cvx_SitesWithPotentialRemediationActivitiesMember_56B13517E2B8891F6457A4FE177DBBE6" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_cvx_OtherContingenciesAndCommitmentsDomain_551A4C3EC12BAAC2BDB4A4FE155FCB79" xlink:to="loc_cvx_SitesWithPotentialRemediationActivitiesMember_56B13517E2B8891F6457A4FE177DBBE6" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_EnvironmentalReserveLessEnvironmentalReserveForSitesWithPotentialRemediationActivitiesMember" xlink:label="loc_cvx_EnvironmentalReserveLessEnvironmentalReserveForSitesWithPotentialRemediationActivitiesMember_B4CCB920C30E52485269A4FE1829345B" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_cvx_OtherContingenciesAndCommitmentsDomain_551A4C3EC12BAAC2BDB4A4FE155FCB79" xlink:to="loc_cvx_EnvironmentalReserveLessEnvironmentalReserveForSitesWithPotentialRemediationActivitiesMember_B4CCB920C30E52485269A4FE1829345B" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_OtherBusinessesMember" xlink:label="loc_cvx_OtherBusinessesMember_67025824587DEECD9B00A4FE19617414" xlink:type="locator"/>

<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_cvx_OtherContingenciesAndCommitmentsDomain_551A4C3EC12BAAC2BDB4A4FE155FCB79" xlink:to="loc_cvx_OtherBusinessesMember_67025824587DEECD9B00A4FE19617414" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_GuaranteesAbstract" xlink:label="loc_us-gaap_GuaranteesAbstract_FC9B3DE9B4E247416937A4DEEDD869AA" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_cvx_OtherContingenciesAndCommitmentsLineItems_6ECB69D674B43403DA29A4DEEDD8C282" xlink:to="loc_us-gaap_GuaranteesAbstract_FC9B3DE9B4E247416937A4DEEDD869AA" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_NumberofGuarantees" xlink:label="loc_cvx_NumberofGuarantees_7137351F7CB1AD20A963A4DEEDD873C8" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GuaranteesAbstract_FC9B3DE9B4E247416937A4DEEDD869AA" xlink:to="loc_cvx_NumberofGuarantees_7137351F7CB1AD20A963A4DEEDD873C8" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_GuaranteeObligationsCurrentCarryingValue" xlink:label="loc_us-gaap_GuaranteeObligationsCurrentCarryingValue_EA41350AB6C88ECB1C91A4DEEDD8C106" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GuaranteesAbstract_FC9B3DE9B4E247416937A4DEEDD869AA" xlink:to="loc_us-gaap_GuaranteeObligationsCurrentCarryingValue_EA41350AB6C88ECB1C91A4DEEDD8C106" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_GuarantorObligationsRemainingTerm" xlink:label="loc_cvx_GuarantorObligationsRemainingTerm_207D795F76299EC2C32CA4DEEDD86D88" xlink:type="locator"/>

<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GuaranteesAbstract_FC9B3DE9B4E247416937A4DEEDD869AA" xlink:to="loc_cvx_GuarantorObligationsRemainingTerm_207D795F76299EC2C32CA4DEEDD86D88" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_IdemnificationsAbstract" xlink:label="loc_cvx_IdemnificationsAbstract_50EE2545F3BE723E9B21A4DEEDD8D6FC" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_cvx_OtherContingenciesAndCommitmentsLineItems_6ECB69D674B43403DA29A4DEEDD8C282" xlink:to="loc_cvx_IdemnificationsAbstract_50EE2545F3BE723E9B21A4DEEDD8D6FC" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_IndemnificationsAcquiredCompanyEnvironLiabilitiesMaxObligation" xlink:label="loc_cvx_IndemnificationsAcquiredCompanyEnvironLiabilitiesMaxObligation_6E4A6EC947ECDE77AC76A4DEEDD854F2" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_cvx_IdemnificationsAbstract_50EE2545F3BE723E9B21A4DEEDD8D6FC" xlink:to="loc_cvx_IndemnificationsAcquiredCompanyEnvironLiabilitiesMaxObligation_6E4A6EC947ECDE77AC76A4DEEDD854F2" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_UnconditionalPurchaseObligationsExcludingCapitalStockRedemptionsAbstract" xlink:label="loc_us-gaap_UnconditionalPurchaseObligationsExcludingCapitalStockRedemptionsAbstract_1D9F4B3B2DD1FD0BF9A5A4DEEDD81149" xlink:type="locator"/>

<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_cvx_OtherContingenciesAndCommitmentsLineItems_6ECB69D674B43403DA29A4DEEDD8C282" xlink:to="loc_us-gaap_UnconditionalPurchaseObligationsExcludingCapitalStockRedemptionsAbstract_1D9F4B3B2DD1FD0BF9A5A4DEEDD81149" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RecordedUnconditionalPurchaseObligationDueWithinOneYear" xlink:label="loc_us-gaap_RecordedUnconditionalPurchaseObligationDueWithinOneYear_7151733B71017971DC21A4DEEDD88FC9" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UnconditionalPurchaseObligationsExcludingCapitalStockRedemptionsAbstract_1D9F4B3B2DD1FD0BF9A5A4DEEDD81149" xlink:to="loc_us-gaap_RecordedUnconditionalPurchaseObligationDueWithinOneYear_7151733B71017971DC21A4DEEDD88FC9" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RecordedUnconditionalPurchaseObligationDueInSecondYear" xlink:label="loc_us-gaap_RecordedUnconditionalPurchaseObligationDueInSecondYear_DAC8C0842A3725DE2E3BA4DEEDD8FA67" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UnconditionalPurchaseObligationsExcludingCapitalStockRedemptionsAbstract_1D9F4B3B2DD1FD0BF9A5A4DEEDD81149" xlink:to="loc_us-gaap_RecordedUnconditionalPurchaseObligationDueInSecondYear_DAC8C0842A3725DE2E3BA4DEEDD8FA67" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RecordedUnconditionalPurchaseObligationDueInThirdYear" xlink:label="loc_us-gaap_RecordedUnconditionalPurchaseObligationDueInThirdYear_DB3FEA8EBD7E65859494A4DEEDD820D4" xlink:type="locator"/>

<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UnconditionalPurchaseObligationsExcludingCapitalStockRedemptionsAbstract_1D9F4B3B2DD1FD0BF9A5A4DEEDD81149" xlink:to="loc_us-gaap_RecordedUnconditionalPurchaseObligationDueInThirdYear_DB3FEA8EBD7E65859494A4DEEDD820D4" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RecordedUnconditionalPurchaseObligationDueInFourthYear" xlink:label="loc_us-gaap_RecordedUnconditionalPurchaseObligationDueInFourthYear_0DAF3EA9007896A27951A4DEEDD8AB60" xlink:type="locator"/>

<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UnconditionalPurchaseObligationsExcludingCapitalStockRedemptionsAbstract_1D9F4B3B2DD1FD0BF9A5A4DEEDD81149" xlink:to="loc_us-gaap_RecordedUnconditionalPurchaseObligationDueInFourthYear_0DAF3EA9007896A27951A4DEEDD8AB60" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RecordedUnconditionalPurchaseObligationDueInFifthYear" xlink:label="loc_us-gaap_RecordedUnconditionalPurchaseObligationDueInFifthYear_B06F1DDD52D808C480A5A4DEEDD80342" xlink:type="locator"/>

<link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UnconditionalPurchaseObligationsExcludingCapitalStockRedemptionsAbstract_1D9F4B3B2DD1FD0BF9A5A4DEEDD81149" xlink:to="loc_us-gaap_RecordedUnconditionalPurchaseObligationDueInFifthYear_B06F1DDD52D808C480A5A4DEEDD80342" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RecordedUnconditionalPurchaseObligationDueAfterFifthYear" xlink:label="loc_us-gaap_RecordedUnconditionalPurchaseObligationDueAfterFifthYear_0F72D998B6F6747BBF87A4DEEDD86604" xlink:type="locator"/>

<link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UnconditionalPurchaseObligationsExcludingCapitalStockRedemptionsAbstract_1D9F4B3B2DD1FD0BF9A5A4DEEDD81149" xlink:to="loc_us-gaap_RecordedUnconditionalPurchaseObligationDueAfterFifthYear_0F72D998B6F6747BBF87A4DEEDD86604" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_PaymentsMadeUnderLongTermUnconditionalPurchaseObligationsAndCommitmentsIncludingThroughputAndTakeOrPayAgreements" xlink:label="loc_cvx_PaymentsMadeUnderLongTermUnconditionalPurchaseObligationsAndCommitmentsIncludingThroughputAndTakeOrPayAgreements_3B37CD0EB027AA3E2855A4DEEDD88338" xlink:type="locator"/>

<link:definitionArc order="7" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UnconditionalPurchaseObligationsExcludingCapitalStockRedemptionsAbstract_1D9F4B3B2DD1FD0BF9A5A4DEEDD81149" xlink:to="loc_cvx_PaymentsMadeUnderLongTermUnconditionalPurchaseObligationsAndCommitmentsIncludingThroughputAndTakeOrPayAgreements_3B37CD0EB027AA3E2855A4DEEDD88338" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ComponentsOfEnvironmentalLossAccrualAbstract" xlink:label="loc_us-gaap_ComponentsOfEnvironmentalLossAccrualAbstract_9F8D7921892CE06E3976A4DEEDD84C64" xlink:type="locator"/>

<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_cvx_OtherContingenciesAndCommitmentsLineItems_6ECB69D674B43403DA29A4DEEDD8C282" xlink:to="loc_us-gaap_ComponentsOfEnvironmentalLossAccrualAbstract_9F8D7921892CE06E3976A4DEEDD84C64" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AccrualForEnvironmentalLossContingenciesComponentAmount" xlink:label="loc_us-gaap_AccrualForEnvironmentalLossContingenciesComponentAmount_3403343EEC5DF4F21528A4DEEDD8AF55" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ComponentsOfEnvironmentalLossAccrualAbstract_9F8D7921892CE06E3976A4DEEDD84C64" xlink:to="loc_us-gaap_AccrualForEnvironmentalLossContingenciesComponentAmount_3403343EEC5DF4F21528A4DEEDD8AF55" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AccrualForEnvironmentalLossContingencies" xlink:label="loc_us-gaap_AccrualForEnvironmentalLossContingencies_22264681377783A2F730A4DEEDD8F0B8" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ComponentsOfEnvironmentalLossAccrualAbstract_9F8D7921892CE06E3976A4DEEDD84C64" xlink:to="loc_us-gaap_AccrualForEnvironmentalLossContingencies_22264681377783A2F730A4DEEDD8F0B8" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_SitesWithPotentialRemediationActivities" xlink:label="loc_cvx_SitesWithPotentialRemediationActivities_271E713368138A170856A4DEEDD83AF6" xlink:type="locator"/>

<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ComponentsOfEnvironmentalLossAccrualAbstract_9F8D7921892CE06E3976A4DEEDD84C64" xlink:to="loc_cvx_SitesWithPotentialRemediationActivities_271E713368138A170856A4DEEDD83AF6" xlink:type="arc"/>

</link:definitionLink>

<link:definitionLink xlink:role="http://www.chevron.com/role/OtherFinancialInformation" xlink:type="extended"/>

<link:definitionLink xlink:role="http://www.chevron.com/role/OtherFinancialInformationDetails" xlink:type="extended">

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_BusinessAcquisitionLineItems" xlink:label="loc_us-gaap_BusinessAcquisitionLineItems_3F30809678B20FBFB19E08A872E4E89F" xlink:type="locator"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable" xlink:label="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_16CCC089ACC2A58C179B08A872E3C415" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_3F30809678B20FBFB19E08A872E4E89F" xlink:to="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_16CCC089ACC2A58C179B08A872E3C415" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_BusinessAcquisitionAxis" xlink:label="loc_us-gaap_BusinessAcquisitionAxis_E758FAE1F88A0402206108A872E385ED" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_16CCC089ACC2A58C179B08A872E3C415" xlink:to="loc_us-gaap_BusinessAcquisitionAxis_E758FAE1F88A0402206108A872E385ED" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_BusinessAcquisitionAcquireeDomain" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_658AB1B8E6DDDEE0745B08A872E33F16_default" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_E758FAE1F88A0402206108A872E385ED" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_658AB1B8E6DDDEE0745B08A872E33F16_default" xlink:type="arc"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_E758FAE1F88A0402206108A872E385ED" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_658AB1B8E6DDDEE0745B08A872E33F16" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_UnocalMember" xlink:label="loc_cvx_UnocalMember_F99708B2D8A21FA5A84C08A872E42AFA" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_658AB1B8E6DDDEE0745B08A872E33F16" xlink:to="loc_cvx_UnocalMember_F99708B2D8A21FA5A84C08A872E42AFA" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_Goodwill" xlink:label="loc_us-gaap_Goodwill_A2E2106582BD49291B9A08A872E4714D" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_3F30809678B20FBFB19E08A872E4E89F" xlink:to="loc_us-gaap_Goodwill_A2E2106582BD49291B9A08A872E4714D" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SegmentReportingInformationLineItems" xlink:label="loc_us-gaap_SegmentReportingInformationLineItems_4D3BE47AD3D0A2B3E24708A872E4812D" xlink:type="locator"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable" xlink:label="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_DFA264D0ED85DFF6D9A808A872E433D6" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_4D3BE47AD3D0A2B3E24708A872E4812D" xlink:to="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_DFA264D0ED85DFF6D9A808A872E433D6" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StatementBusinessSegmentsAxis" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_303CE1ECF85DF9811B6308A872E4CE08" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_DFA264D0ED85DFF6D9A808A872E433D6" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_303CE1ECF85DF9811B6308A872E4CE08" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SegmentDomain" xlink:label="loc_us-gaap_SegmentDomain_B9CB2654E405E201151A08A872E46732_default" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_303CE1ECF85DF9811B6308A872E4CE08" xlink:to="loc_us-gaap_SegmentDomain_B9CB2654E405E201151A08A872E46732_default" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SegmentDomain" xlink:label="loc_us-gaap_SegmentDomain_B9CB2654E405E201151A08A872E46732" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_303CE1ECF85DF9811B6308A872E4CE08" xlink:to="loc_us-gaap_SegmentDomain_B9CB2654E405E201151A08A872E46732" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DownstreamEquipmentMember" xlink:label="loc_us-gaap_DownstreamEquipmentMember_CCA8C01F9152CBA3CABC08A872E410C0" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_B9CB2654E405E201151A08A872E46732" xlink:to="loc_us-gaap_DownstreamEquipmentMember_CCA8C01F9152CBA3CABC08A872E410C0" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_UpstreamEquipmentMember" xlink:label="loc_us-gaap_UpstreamEquipmentMember_96410882C3E2A60E0DB108A872E470D5" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_B9CB2654E405E201151A08A872E46732" xlink:to="loc_us-gaap_UpstreamEquipmentMember_96410882C3E2A60E0DB108A872E470D5" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_GainLossOnDispositionOfAssets" xlink:label="loc_us-gaap_GainLossOnDispositionOfAssets_45C9DAD3FB385AC11AAD08A872E4036E" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_4D3BE47AD3D0A2B3E24708A872E4812D" xlink:to="loc_us-gaap_GainLossOnDispositionOfAssets_45C9DAD3FB385AC11AAD08A872E4036E" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_CompanyShareOfEquityAffiliatesForeignCurrencyEffects" xlink:label="loc_cvx_CompanyShareOfEquityAffiliatesForeignCurrencyEffects_7D8832EF7D66E547651308A872E4F754" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_4D3BE47AD3D0A2B3E24708A872E4812D" xlink:to="loc_cvx_CompanyShareOfEquityAffiliatesForeignCurrencyEffects_7D8832EF7D66E547651308A872E4F754" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_GainLossonImpairmentChargesandOtherAssetsWriteoffs" xlink:label="loc_cvx_GainLossonImpairmentChargesandOtherAssetsWriteoffs_E3A198589FE8B58D9B7D08A872E435A8" xlink:type="locator"/>

<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_4D3BE47AD3D0A2B3E24708A872E4812D" xlink:to="loc_cvx_GainLossonImpairmentChargesandOtherAssetsWriteoffs_E3A198589FE8B58D9B7D08A872E435A8" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_InterestCostsIncurred" xlink:label="loc_us-gaap_InterestCostsIncurred_1664A19F00778798693108A872E486A8" xlink:type="locator"/>

<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_4D3BE47AD3D0A2B3E24708A872E4812D" xlink:to="loc_us-gaap_InterestCostsIncurred_1664A19F00778798693108A872E486A8" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_InterestCostsCapitalized" xlink:label="loc_us-gaap_InterestCostsCapitalized_9329886D7211C15CD26308A872E51AA8" xlink:type="locator"/>

<link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_4D3BE47AD3D0A2B3E24708A872E4812D" xlink:to="loc_us-gaap_InterestCostsCapitalized_9329886D7211C15CD26308A872E51AA8" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_InterestExpenseDebt" xlink:label="loc_us-gaap_InterestExpenseDebt_0D21D61C8262909C90DF08A872E5178D" xlink:type="locator"/>

<link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_4D3BE47AD3D0A2B3E24708A872E4812D" xlink:to="loc_us-gaap_InterestExpenseDebt_0D21D61C8262909C90DF08A872E5178D" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ResearchAndDevelopmentExpense" xlink:label="loc_us-gaap_ResearchAndDevelopmentExpense_985F06B557F124E07B0008A872E5B7ED" xlink:type="locator"/>

<link:definitionArc order="7" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_4D3BE47AD3D0A2B3E24708A872E4812D" xlink:to="loc_us-gaap_ResearchAndDevelopmentExpense_985F06B557F124E07B0008A872E5B7ED" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ExcessOfReplacementOrCurrentCostsOverStatedLIFOValue" xlink:label="loc_us-gaap_ExcessOfReplacementOrCurrentCostsOverStatedLIFOValue_8E6AC33308F958BCAB0208A872E55A32" xlink:type="locator"/>

<link:definitionArc order="8" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_4D3BE47AD3D0A2B3E24708A872E4812D" xlink:to="loc_us-gaap_ExcessOfReplacementOrCurrentCostsOverStatedLIFOValue_8E6AC33308F958BCAB0208A872E55A32" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EffectOfLIFOInventoryLiquidationOnIncome" xlink:label="loc_us-gaap_EffectOfLIFOInventoryLiquidationOnIncome_5E7B65419E94D505BE7008A872E57A4C" xlink:type="locator"/>

<link:definitionArc order="9" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_4D3BE47AD3D0A2B3E24708A872E4812D" xlink:to="loc_us-gaap_EffectOfLIFOInventoryLiquidationOnIncome_5E7B65419E94D505BE7008A872E57A4C" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_ForeignCurrencyEffects" xlink:label="loc_cvx_ForeignCurrencyEffects_969CCDBBECC9D3C3AC3B08A872E5B433" xlink:type="locator"/>

<link:definitionArc order="10" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_4D3BE47AD3D0A2B3E24708A872E4812D" xlink:to="loc_cvx_ForeignCurrencyEffects_969CCDBBECC9D3C3AC3B08A872E5B433" xlink:type="arc"/>

</link:definitionLink>

<link:definitionLink xlink:role="http://www.chevron.com/role/OtherFinancialInformationTables" xlink:type="extended"/>

<link:definitionLink xlink:role="http://www.chevron.com/role/PropertiesPlantAndEquipment" xlink:type="extended"/>

<link:definitionLink xlink:role="http://www.chevron.com/role/PropertiesPlantAndEquipmentDetails" xlink:type="extended">

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PropertyPlantAndEquipmentLineItems" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentLineItems_86445491C7FEDBFCE9C3C9204BBABA28" xlink:type="locator"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfPropertyPlantAndEquipmentTable" xlink:label="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_F9ACEAA20421421501D4C9204BB62583" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_86445491C7FEDBFCE9C3C9204BBABA28" xlink:to="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_F9ACEAA20421421501D4C9204BB62583" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StatementBusinessSegmentsAxis" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_7207CFE256345A21F055C9204BB7C1BA" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_F9ACEAA20421421501D4C9204BB62583" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_7207CFE256345A21F055C9204BB7C1BA" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SegmentDomain" xlink:label="loc_us-gaap_SegmentDomain_0407B0FD084A336BFA97C9204BB75600_default" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_7207CFE256345A21F055C9204BB7C1BA" xlink:to="loc_us-gaap_SegmentDomain_0407B0FD084A336BFA97C9204BB75600_default" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SegmentDomain" xlink:label="loc_us-gaap_SegmentDomain_0407B0FD084A336BFA97C9204BB75600" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_7207CFE256345A21F055C9204BB7C1BA" xlink:to="loc_us-gaap_SegmentDomain_0407B0FD084A336BFA97C9204BB75600" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_UpstreamEquipmentMember" xlink:label="loc_us-gaap_UpstreamEquipmentMember_E1A9B7814153C552F04FC9204BB8DC8F" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_0407B0FD084A336BFA97C9204BB75600" xlink:to="loc_us-gaap_UpstreamEquipmentMember_E1A9B7814153C552F04FC9204BB8DC8F" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DownstreamEquipmentMember" xlink:label="loc_us-gaap_DownstreamEquipmentMember_1F789E3326F1E2D685D2C9204BB8C9AA" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_0407B0FD084A336BFA97C9204BB75600" xlink:to="loc_us-gaap_DownstreamEquipmentMember_1F789E3326F1E2D685D2C9204BB8C9AA" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AllOtherSegmentsMember" xlink:label="loc_us-gaap_AllOtherSegmentsMember_97D18DE83EB2769F1E68C9204BB8D9BC" xlink:type="locator"/>

<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_0407B0FD084A336BFA97C9204BB75600" xlink:to="loc_us-gaap_AllOtherSegmentsMember_97D18DE83EB2769F1E68C9204BB8D9BC" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_StatementGeographicalAxis" xlink:label="loc_srt_StatementGeographicalAxis_ECAB018361F8AA4B85C3C9204BB8C27B" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_F9ACEAA20421421501D4C9204BB62583" xlink:to="loc_srt_StatementGeographicalAxis_ECAB018361F8AA4B85C3C9204BB8C27B" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_SegmentGeographicalDomain" xlink:label="loc_srt_SegmentGeographicalDomain_EAFC500BD16BEDF889B8C9204BB8AF0B_default" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_StatementGeographicalAxis_ECAB018361F8AA4B85C3C9204BB8C27B" xlink:to="loc_srt_SegmentGeographicalDomain_EAFC500BD16BEDF889B8C9204BB8AF0B_default" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_SegmentGeographicalDomain" xlink:label="loc_srt_SegmentGeographicalDomain_EAFC500BD16BEDF889B8C9204BB8AF0B" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_StatementGeographicalAxis_ECAB018361F8AA4B85C3C9204BB8C27B" xlink:to="loc_srt_SegmentGeographicalDomain_EAFC500BD16BEDF889B8C9204BB8AF0B" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.sec.gov/country/2017/country-2017-01-31.xsd#country_US" xlink:label="loc_country_US_E0EBDCC0EE4BF74B3904C9204BB97DDE" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_EAFC500BD16BEDF889B8C9204BB8AF0B" xlink:to="loc_country_US_E0EBDCC0EE4BF74B3904C9204BB97DDE" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NonUsMember" xlink:label="loc_us-gaap_NonUsMember_6F2A0BFF5A5B12D8A278C9204BB958CB" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_EAFC500BD16BEDF889B8C9204BB8AF0B" xlink:to="loc_us-gaap_NonUsMember_6F2A0BFF5A5B12D8A278C9204BB958CB" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.sec.gov/country/2017/country-2017-01-31.xsd#country_AU" xlink:label="loc_country_AU_8B73B3CB695D3399D650C9204BB9C614" xlink:type="locator"/>

<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_EAFC500BD16BEDF889B8C9204BB8AF0B" xlink:to="loc_country_AU_8B73B3CB695D3399D650C9204BB9C614" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PropertyPlantAndEquipmentNetByTypeAbstract" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentNetByTypeAbstract_8DE0F9C9114F2A376ADAC9204BBAC247" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_86445491C7FEDBFCE9C3C9204BBABA28" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentNetByTypeAbstract_8DE0F9C9114F2A376ADAC9204BBAC247" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PropertyPlantAndEquipmentGross" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentGross_4007C4A66B84383B9D7EC9204BBAC793" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentNetByTypeAbstract_8DE0F9C9114F2A376ADAC9204BBAC247" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentGross_4007C4A66B84383B9D7EC9204BBAC793" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PropertyPlantAndEquipmentNet" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentNet_D712D5CA79F38895D80BC9204BBAA284" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentNetByTypeAbstract_8DE0F9C9114F2A376ADAC9204BBAC247" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentNet_D712D5CA79F38895D80BC9204BBAA284" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PropertyPlantAndEquipmentAdditions" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentAdditions_2A25D80ECA55B29DA0A8C9204BBB2CE6" xlink:type="locator"/>

<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentNetByTypeAbstract_8DE0F9C9114F2A376ADAC9204BBAC247" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentAdditions_2A25D80ECA55B29DA0A8C9204BBB2CE6" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DepreciationDepletionAndAmortization" xlink:label="loc_us-gaap_DepreciationDepletionAndAmortization_21981C42268B5523685AC9204BBB2BDB" xlink:type="locator"/>

<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentNetByTypeAbstract_8DE0F9C9114F2A376ADAC9204BBAC247" xlink:to="loc_us-gaap_DepreciationDepletionAndAmortization_21981C42268B5523685AC9204BBB2BDB" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_DryHoleExpenseRelatedToPriorYearNet" xlink:label="loc_cvx_DryHoleExpenseRelatedToPriorYearNet_44FE3EC4640DF83A4B56C9204BBBE18E" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_86445491C7FEDBFCE9C3C9204BBABA28" xlink:to="loc_cvx_DryHoleExpenseRelatedToPriorYearNet_44FE3EC4640DF83A4B56C9204BBBE18E" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AccretionExpense" xlink:label="loc_us-gaap_AccretionExpense_220B87D134A7BB23EA41C9204BBB470E" xlink:type="locator"/>

<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_86445491C7FEDBFCE9C3C9204BBABA28" xlink:to="loc_us-gaap_AccretionExpense_220B87D134A7BB23EA41C9204BBB470E" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AssetImpairmentCharges" xlink:label="loc_us-gaap_AssetImpairmentCharges_356F0EFCAC327DBD4CF6C9204BBBA1BB" xlink:type="locator"/>

<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_86445491C7FEDBFCE9C3C9204BBABA28" xlink:to="loc_us-gaap_AssetImpairmentCharges_356F0EFCAC327DBD4CF6C9204BBBA1BB" xlink:type="arc"/>

</link:definitionLink>

<link:definitionLink xlink:role="http://www.chevron.com/role/PropertiesPlantAndEquipmentTables" xlink:type="extended"/>

<link:definitionLink xlink:role="http://www.chevron.com/role/Revenue" xlink:type="extended"/>

<link:definitionLink xlink:role="http://www.chevron.com/role/RevenueDetails" xlink:type="extended">

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RevenueInitialApplicationPeriodCumulativeEffectTransitionLineItems" xlink:label="loc_us-gaap_RevenueInitialApplicationPeriodCumulativeEffectTransitionLineItems_5907B52A4CFFF4EC4F1152192A2EA22E" xlink:type="locator"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RevenueInitialApplicationPeriodCumulativeEffectTransitionTable" xlink:label="loc_us-gaap_RevenueInitialApplicationPeriodCumulativeEffectTransitionTable_135398E5D20FDCDD0EC252192A2E8640" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_RevenueInitialApplicationPeriodCumulativeEffectTransitionLineItems_5907B52A4CFFF4EC4F1152192A2EA22E" xlink:to="loc_us-gaap_RevenueInitialApplicationPeriodCumulativeEffectTransitionTable_135398E5D20FDCDD0EC252192A2E8640" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_InitialApplicationPeriodCumulativeEffectTransitionAxis" xlink:label="loc_us-gaap_InitialApplicationPeriodCumulativeEffectTransitionAxis_4DDABDA359FD9A3DB2EC52192A2E26CE" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_RevenueInitialApplicationPeriodCumulativeEffectTransitionTable_135398E5D20FDCDD0EC252192A2E8640" xlink:to="loc_us-gaap_InitialApplicationPeriodCumulativeEffectTransitionAxis_4DDABDA359FD9A3DB2EC52192A2E26CE" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_InitialApplicationPeriodCumulativeEffectTransitionDomain" xlink:label="loc_us-gaap_InitialApplicationPeriodCumulativeEffectTransitionDomain_0E47C989BE7807BBC09C52192A2E8319_default" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_InitialApplicationPeriodCumulativeEffectTransitionAxis_4DDABDA359FD9A3DB2EC52192A2E26CE" xlink:to="loc_us-gaap_InitialApplicationPeriodCumulativeEffectTransitionDomain_0E47C989BE7807BBC09C52192A2E8319_default" xlink:type="arc"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_InitialApplicationPeriodCumulativeEffectTransitionAxis_4DDABDA359FD9A3DB2EC52192A2E26CE" xlink:to="loc_us-gaap_InitialApplicationPeriodCumulativeEffectTransitionDomain_0E47C989BE7807BBC09C52192A2E8319" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DifferenceBetweenRevenueGuidanceInEffectBeforeAndAfterTopic606Member" xlink:label="loc_us-gaap_DifferenceBetweenRevenueGuidanceInEffectBeforeAndAfterTopic606Member_1A9A5458FD9FBC1BC1BA52192A2EBC75" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_InitialApplicationPeriodCumulativeEffectTransitionDomain_0E47C989BE7807BBC09C52192A2E8319" xlink:to="loc_us-gaap_DifferenceBetweenRevenueGuidanceInEffectBeforeAndAfterTopic606Member_1A9A5458FD9FBC1BC1BA52192A2EBC75" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AdjustmentsForNewAccountingPronouncementsAxis" xlink:label="loc_us-gaap_AdjustmentsForNewAccountingPronouncementsAxis_DAE72DCD7F5853DEE7BB52192A2E74EF" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_RevenueInitialApplicationPeriodCumulativeEffectTransitionTable_135398E5D20FDCDD0EC252192A2E8640" xlink:to="loc_us-gaap_AdjustmentsForNewAccountingPronouncementsAxis_DAE72DCD7F5853DEE7BB52192A2E74EF" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_TypeOfAdoptionMember" xlink:label="loc_us-gaap_TypeOfAdoptionMember_EC195ADF6CC3A830F7AA52192A2EFE6B_default" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AdjustmentsForNewAccountingPronouncementsAxis_DAE72DCD7F5853DEE7BB52192A2E74EF" xlink:to="loc_us-gaap_TypeOfAdoptionMember_EC195ADF6CC3A830F7AA52192A2EFE6B_default" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_TypeOfAdoptionMember" xlink:label="loc_us-gaap_TypeOfAdoptionMember_EC195ADF6CC3A830F7AA52192A2EFE6B" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AdjustmentsForNewAccountingPronouncementsAxis_DAE72DCD7F5853DEE7BB52192A2E74EF" xlink:to="loc_us-gaap_TypeOfAdoptionMember_EC195ADF6CC3A830F7AA52192A2EFE6B" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AccountingStandardsUpdate201409Member" xlink:label="loc_us-gaap_AccountingStandardsUpdate201409Member_092153525A8AF03BBFC752192A2E15D6" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TypeOfAdoptionMember_EC195ADF6CC3A830F7AA52192A2EFE6B" xlink:to="loc_us-gaap_AccountingStandardsUpdate201409Member_092153525A8AF03BBFC752192A2E15D6" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_TaxesOther" xlink:label="loc_us-gaap_TaxesOther_C2037993CD04BABA069452192A2E2E1F" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RevenueInitialApplicationPeriodCumulativeEffectTransitionLineItems_5907B52A4CFFF4EC4F1152192A2EA22E" xlink:to="loc_us-gaap_TaxesOther_C2037993CD04BABA069452192A2E2E1F" xlink:type="arc"/>

</link:definitionLink>

<link:definitionLink xlink:role="http://www.chevron.com/role/ScheduleIiValuationAndQualifyingAccounts" xlink:type="extended"/>

<link:definitionLink xlink:role="http://www.chevron.com/role/ScheduleIiValuationAndQualifyingAccountsDetails" xlink:type="extended">

<link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_ValuationAndQualifyingAccountsDisclosureLineItems" xlink:label="loc_srt_ValuationAndQualifyingAccountsDisclosureLineItems_6070B1BDF61942AD907F4791002D6C0F" xlink:type="locator"/>

<link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_ValuationAndQualifyingAccountsDisclosureTable" xlink:label="loc_srt_ValuationAndQualifyingAccountsDisclosureTable_5C7D06AC97814F42D5184791002B2833" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_srt_ValuationAndQualifyingAccountsDisclosureLineItems_6070B1BDF61942AD907F4791002D6C0F" xlink:to="loc_srt_ValuationAndQualifyingAccountsDisclosureTable_5C7D06AC97814F42D5184791002B2833" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ValuationAllowancesAndReservesTypeAxis" xlink:label="loc_us-gaap_ValuationAllowancesAndReservesTypeAxis_8D23641D3B26FD7C34614791002CC217" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_srt_ValuationAndQualifyingAccountsDisclosureTable_5C7D06AC97814F42D5184791002B2833" xlink:to="loc_us-gaap_ValuationAllowancesAndReservesTypeAxis_8D23641D3B26FD7C34614791002CC217" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ValuationAllowancesAndReservesDomain" xlink:label="loc_us-gaap_ValuationAllowancesAndReservesDomain_19EE1FAC27D3D160C22E4791002C385D_default" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_ValuationAllowancesAndReservesTypeAxis_8D23641D3B26FD7C34614791002CC217" xlink:to="loc_us-gaap_ValuationAllowancesAndReservesDomain_19EE1FAC27D3D160C22E4791002C385D_default" xlink:type="arc"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_ValuationAllowancesAndReservesTypeAxis_8D23641D3B26FD7C34614791002CC217" xlink:to="loc_us-gaap_ValuationAllowancesAndReservesDomain_19EE1FAC27D3D160C22E4791002C385D" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_BusinessRestructuringReservesMember" xlink:label="loc_us-gaap_BusinessRestructuringReservesMember_59456769A91604981F644791002CF4E7" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ValuationAllowancesAndReservesDomain_19EE1FAC27D3D160C22E4791002C385D" xlink:to="loc_us-gaap_BusinessRestructuringReservesMember_59456769A91604981F644791002CF4E7" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AllowanceForCreditLossMember" xlink:label="loc_us-gaap_AllowanceForCreditLossMember_8436A1591808446979A94791002D9EE8" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ValuationAllowancesAndReservesDomain_19EE1FAC27D3D160C22E4791002C385D" xlink:to="loc_us-gaap_AllowanceForCreditLossMember_8436A1591808446979A94791002D9EE8" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ValuationAllowanceOfDeferredTaxAssetsMember" xlink:label="loc_us-gaap_ValuationAllowanceOfDeferredTaxAssetsMember_BFC27E148456BB41B5544791002D97D6" xlink:type="locator"/>

<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ValuationAllowancesAndReservesDomain_19EE1FAC27D3D160C22E4791002C385D" xlink:to="loc_us-gaap_ValuationAllowanceOfDeferredTaxAssetsMember_BFC27E148456BB41B5544791002D97D6" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_MovementInValuationAllowancesAndReservesRollForward" xlink:label="loc_us-gaap_MovementInValuationAllowancesAndReservesRollForward_FBFE2228FD2DBED17E7A4791002E8D93" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ValuationAndQualifyingAccountsDisclosureLineItems_6070B1BDF61942AD907F4791002D6C0F" xlink:to="loc_us-gaap_MovementInValuationAllowancesAndReservesRollForward_FBFE2228FD2DBED17E7A4791002E8D93" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ValuationAllowancesAndReservesBalance" xlink:label="loc_us-gaap_ValuationAllowancesAndReservesBalance_16FBCCE7D5DBAD273FAE4791002E6845" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MovementInValuationAllowancesAndReservesRollForward_FBFE2228FD2DBED17E7A4791002E8D93" xlink:to="loc_us-gaap_ValuationAllowancesAndReservesBalance_16FBCCE7D5DBAD273FAE4791002E6845" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ValuationAllowancesAndReservesChargedToCostAndExpense" xlink:label="loc_us-gaap_ValuationAllowancesAndReservesChargedToCostAndExpense_AADF745B73E03AFC8B0B4791002EC718" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MovementInValuationAllowancesAndReservesRollForward_FBFE2228FD2DBED17E7A4791002E8D93" xlink:to="loc_us-gaap_ValuationAllowancesAndReservesChargedToCostAndExpense_AADF745B73E03AFC8B0B4791002EC718" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ValuationAllowancesAndReservesDeductions" xlink:label="loc_us-gaap_ValuationAllowancesAndReservesDeductions_C20143F61D2D5B1A9CDD4791002E8441" xlink:type="locator"/>

<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MovementInValuationAllowancesAndReservesRollForward_FBFE2228FD2DBED17E7A4791002E8D93" xlink:to="loc_us-gaap_ValuationAllowancesAndReservesDeductions_C20143F61D2D5B1A9CDD4791002E8441" xlink:type="arc"/>

</link:definitionLink>

<link:definitionLink xlink:role="http://www.chevron.com/role/ShortTermDebt" xlink:type="extended"/>

<link:definitionLink xlink:role="http://www.chevron.com/role/ShortTermDebtNarrativeDetails" xlink:type="extended">

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DebtInstrumentLineItems" xlink:label="loc_us-gaap_DebtInstrumentLineItems_8C26CBBC9836AFCE603DA60E53448463" xlink:type="locator"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DebtInstrumentTable" xlink:label="loc_us-gaap_DebtInstrumentTable_ABA92CD49D076D7FA29FA60E5343C954" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DebtInstrumentLineItems_8C26CBBC9836AFCE603DA60E53448463" xlink:to="loc_us-gaap_DebtInstrumentTable_ABA92CD49D076D7FA29FA60E5343C954" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_TriggeringEventAxis" xlink:label="loc_cvx_TriggeringEventAxis_0FBBE07799B44E945A26A60E5343B6ED" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_ABA92CD49D076D7FA29FA60E5343C954" xlink:to="loc_cvx_TriggeringEventAxis_0FBBE07799B44E945A26A60E5343B6ED" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_TriggeringEventDomain" xlink:label="loc_cvx_TriggeringEventDomain_105985FD9A687CB8D3D8A60E5343961C_default" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_cvx_TriggeringEventAxis_0FBBE07799B44E945A26A60E5343B6ED" xlink:to="loc_cvx_TriggeringEventDomain_105985FD9A687CB8D3D8A60E5343961C_default" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_TriggeringEventDomain" xlink:label="loc_cvx_TriggeringEventDomain_105985FD9A687CB8D3D8A60E5343961C" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_cvx_TriggeringEventAxis_0FBBE07799B44E945A26A60E5343B6ED" xlink:to="loc_cvx_TriggeringEventDomain_105985FD9A687CB8D3D8A60E5343961C" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_ExpiringinDecember2017Member" xlink:label="loc_cvx_ExpiringinDecember2017Member_672169E486B3066F96F6A60E53434BA3" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_cvx_TriggeringEventDomain_105985FD9A687CB8D3D8A60E5343961C" xlink:to="loc_cvx_ExpiringinDecember2017Member_672169E486B3066F96F6A60E53434BA3" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_ExpiringinDecember2020Member" xlink:label="loc_cvx_ExpiringinDecember2020Member_0ADF9048472667BF9C39A60E5343C478" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_cvx_TriggeringEventDomain_105985FD9A687CB8D3D8A60E5343961C" xlink:to="loc_cvx_ExpiringinDecember2020Member_0ADF9048472667BF9C39A60E5343C478" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity" xlink:label="loc_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_708729AB6FB7D0A10011A60E5344B4CF" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_8C26CBBC9836AFCE603DA60E53448463" xlink:to="loc_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_708729AB6FB7D0A10011A60E5344B4CF" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DebtInstrumentTerm" xlink:label="loc_us-gaap_DebtInstrumentTerm_130F86BFA2363D0A8409A60E53447956" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_8C26CBBC9836AFCE603DA60E53448463" xlink:to="loc_us-gaap_DebtInstrumentTerm_130F86BFA2363D0A8409A60E53447956" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShortTermDebtRefinancedAmount" xlink:label="loc_us-gaap_ShortTermDebtRefinancedAmount_8808B524DC93A7DC44BFA60E53442969" xlink:type="locator"/>

<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_8C26CBBC9836AFCE603DA60E53448463" xlink:to="loc_us-gaap_ShortTermDebtRefinancedAmount_8808B524DC93A7DC44BFA60E53442969" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShorttermDebtAverageOutstandingAmount" xlink:label="loc_us-gaap_ShorttermDebtAverageOutstandingAmount_6CE4021F11C10DC8CE81A653DED335F4" xlink:type="locator"/>

<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_8C26CBBC9836AFCE603DA60E53448463" xlink:to="loc_us-gaap_ShorttermDebtAverageOutstandingAmount_6CE4021F11C10DC8CE81A653DED335F4" xlink:type="arc"/>

</link:definitionLink>

<link:definitionLink xlink:role="http://www.chevron.com/role/ShortTermDebtSumamryDetails" xlink:type="extended"/>

<link:definitionLink xlink:role="http://www.chevron.com/role/ShortTermDebtTables" xlink:type="extended"/>

<link:definitionLink xlink:role="http://www.chevron.com/role/StockOptionsAndOtherShareBasedCompensation" xlink:type="extended"/>

<link:definitionLink xlink:role="http://www.chevron.com/role/StockOptionsAndOtherShareBasedCompensationNarrativeDetails" xlink:type="extended">

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_8CB7836C58FD1255DE3D08A8739172CA" xlink:type="locator"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable" xlink:label="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_689EAD465CEFB97BE8E208A873901F8E" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_8CB7836C58FD1255DE3D08A8739172CA" xlink:to="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_689EAD465CEFB97BE8E208A873901F8E" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AwardTypeAxis" xlink:label="loc_us-gaap_AwardTypeAxis_666E23D13A5C42086BFB08A87390348A" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_689EAD465CEFB97BE8E208A873901F8E" xlink:to="loc_us-gaap_AwardTypeAxis_666E23D13A5C42086BFB08A87390348A" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_363A3231596CF994E4CD08A87390BB59_default" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AwardTypeAxis_666E23D13A5C42086BFB08A87390348A" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_363A3231596CF994E4CD08A87390BB59_default" xlink:type="arc"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AwardTypeAxis_666E23D13A5C42086BFB08A87390348A" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_363A3231596CF994E4CD08A87390BB59" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_PerformanceSharesandRestrictedStockUnitsRSUsMember" xlink:label="loc_cvx_PerformanceSharesandRestrictedStockUnitsRSUsMember_0A50BB5485274B86384708A87390F044" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_363A3231596CF994E4CD08A87390BB59" xlink:to="loc_cvx_PerformanceSharesandRestrictedStockUnitsRSUsMember_0A50BB5485274B86384708A87390F044" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_StockOptionsAndStockAppreciationRightsMember" xlink:label="loc_cvx_StockOptionsAndStockAppreciationRightsMember_EF6A41DBF49D12AF0F9008A873900E05" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_363A3231596CF994E4CD08A87390BB59" xlink:to="loc_cvx_StockOptionsAndStockAppreciationRightsMember_EF6A41DBF49D12AF0F9008A873900E05" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RestrictedStockUnitsRSUMember" xlink:label="loc_us-gaap_RestrictedStockUnitsRSUMember_613218351A31F9D2070E08A87390A1DF" xlink:type="locator"/>

<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_363A3231596CF994E4CD08A87390BB59" xlink:to="loc_us-gaap_RestrictedStockUnitsRSUMember_613218351A31F9D2070E08A87390A1DF" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PerformanceSharesMember" xlink:label="loc_us-gaap_PerformanceSharesMember_20D9D1A85F0CFCD20BED08A873902E4D" xlink:type="locator"/>

<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_363A3231596CF994E4CD08A87390BB59" xlink:to="loc_us-gaap_PerformanceSharesMember_20D9D1A85F0CFCD20BED08A873902E4D" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StockAppreciationRightsSARSMember" xlink:label="loc_us-gaap_StockAppreciationRightsSARSMember_4B25CD33E34021B745DB08A87390636F" xlink:type="locator"/>

<link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_363A3231596CF994E4CD08A87390BB59" xlink:to="loc_us-gaap_StockAppreciationRightsSARSMember_4B25CD33E34021B745DB08A87390636F" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PlanNameAxis" xlink:label="loc_us-gaap_PlanNameAxis_C09DD5C7B28E09E86A5C08A87391CD1D" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_689EAD465CEFB97BE8E208A873901F8E" xlink:to="loc_us-gaap_PlanNameAxis_C09DD5C7B28E09E86A5C08A87391CD1D" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PlanNameDomain" xlink:label="loc_us-gaap_PlanNameDomain_4E078EBD06685E6E44BA08A873911AA9_default" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_PlanNameAxis_C09DD5C7B28E09E86A5C08A87391CD1D" xlink:to="loc_us-gaap_PlanNameDomain_4E078EBD06685E6E44BA08A873911AA9_default" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PlanNameDomain" xlink:label="loc_us-gaap_PlanNameDomain_4E078EBD06685E6E44BA08A873911AA9" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_PlanNameAxis_C09DD5C7B28E09E86A5C08A87391CD1D" xlink:to="loc_us-gaap_PlanNameDomain_4E078EBD06685E6E44BA08A873911AA9" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_ChevronLongTermIncentivePlanLTIPMember" xlink:label="loc_cvx_ChevronLongTermIncentivePlanLTIPMember_69D4D024D341A559206808A873914EEC" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanNameDomain_4E078EBD06685E6E44BA08A873911AA9" xlink:to="loc_cvx_ChevronLongTermIncentivePlanLTIPMember_69D4D024D341A559206808A873914EEC" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_ChevronLongTermIncentivePlanLTIP2017IssuanceMember" xlink:label="loc_cvx_ChevronLongTermIncentivePlanLTIP2017IssuanceMember_47CE96F002EE69E0A82C08A8739167DD" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanNameDomain_4E078EBD06685E6E44BA08A873911AA9" xlink:to="loc_cvx_ChevronLongTermIncentivePlanLTIP2017IssuanceMember_47CE96F002EE69E0A82C08A8739167DD" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_RangeAxis" xlink:label="loc_srt_RangeAxis_1F777A0027602EA277C708A873919E05" xlink:type="locator"/>

<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_689EAD465CEFB97BE8E208A873901F8E" xlink:to="loc_srt_RangeAxis_1F777A0027602EA277C708A873919E05" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_RangeMember" xlink:label="loc_srt_RangeMember_B83F646BAEBBAD44DDDA08A87391F4E1_default" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_1F777A0027602EA277C708A873919E05" xlink:to="loc_srt_RangeMember_B83F646BAEBBAD44DDDA08A87391F4E1_default" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_RangeMember" xlink:label="loc_srt_RangeMember_B83F646BAEBBAD44DDDA08A87391F4E1" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_1F777A0027602EA277C708A873919E05" xlink:to="loc_srt_RangeMember_B83F646BAEBBAD44DDDA08A87391F4E1" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_MaximumMember" xlink:label="loc_srt_MaximumMember_4C9EA4C177971C0E0D6708A8739111E5" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_B83F646BAEBBAD44DDDA08A87391F4E1" xlink:to="loc_srt_MaximumMember_4C9EA4C177971C0E0D6708A8739111E5" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_TriggeringEventAxis" xlink:label="loc_cvx_TriggeringEventAxis_AE988ED56EE94B3B07CB08A87391288D" xlink:type="locator"/>

<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_689EAD465CEFB97BE8E208A873901F8E" xlink:to="loc_cvx_TriggeringEventAxis_AE988ED56EE94B3B07CB08A87391288D" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_TriggeringEventDomain" xlink:label="loc_cvx_TriggeringEventDomain_AF41B989CE84687160C008A873917C58_default" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_cvx_TriggeringEventAxis_AE988ED56EE94B3B07CB08A87391288D" xlink:to="loc_cvx_TriggeringEventDomain_AF41B989CE84687160C008A873917C58_default" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_TriggeringEventDomain" xlink:label="loc_cvx_TriggeringEventDomain_AF41B989CE84687160C008A873917C58" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_cvx_TriggeringEventAxis_AE988ED56EE94B3B07CB08A87391288D" xlink:to="loc_cvx_TriggeringEventDomain_AF41B989CE84687160C008A873917C58" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_FromApril2004throughMay2023Member" xlink:label="loc_cvx_FromApril2004throughMay2023Member_80E7B14F95032C264AC008A873915C35" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_cvx_TriggeringEventDomain_AF41B989CE84687160C008A873917C58" xlink:to="loc_cvx_FromApril2004throughMay2023Member_80E7B14F95032C264AC008A873915C35" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StockOptionPlanExpense" xlink:label="loc_us-gaap_StockOptionPlanExpense_169A9D0BE3382E360DE508A87391CF8A" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_8CB7836C58FD1255DE3D08A8739172CA" xlink:to="loc_us-gaap_StockOptionPlanExpense_169A9D0BE3382E360DE508A87391CF8A" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_AfterTaxCompensationExpenseForStockOptions" xlink:label="loc_cvx_AfterTaxCompensationExpenseForStockOptions_CBEFE7D4A6F10C1AED3808A873919AA9" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_8CB7836C58FD1255DE3D08A8739172CA" xlink:to="loc_cvx_AfterTaxCompensationExpenseForStockOptions_CBEFE7D4A6F10C1AED3808A873919AA9" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_CompensationExpenseForStockAppreciationRightsRestrictedStockPerformanceUnitsAndRestrictedStockUnits" xlink:label="loc_cvx_CompensationExpenseForStockAppreciationRightsRestrictedStockPerformanceUnitsAndRestrictedStockUnits_7080CA23F4DBF0B3E05608A873911AF3" xlink:type="locator"/>

<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_8CB7836C58FD1255DE3D08A8739172CA" xlink:to="loc_cvx_CompensationExpenseForStockAppreciationRightsRestrictedStockPerformanceUnitsAndRestrictedStockUnits_7080CA23F4DBF0B3E05608A873911AF3" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_AfterTaxCompensationExpenseForStockAppreciationRightsRestrictedStockPerformanceUnitsAndRestrictedStockUnits" xlink:label="loc_cvx_AfterTaxCompensationExpenseForStockAppreciationRightsRestrictedStockPerformanceUnitsAndRestrictedStockUnits_A3E6079E1B86B7EC3DB808A87392A542" xlink:type="locator"/>

<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_8CB7836C58FD1255DE3D08A8739172CA" xlink:to="loc_cvx_AfterTaxCompensationExpenseForStockAppreciationRightsRestrictedStockPerformanceUnitsAndRestrictedStockUnits_A3E6079E1B86B7EC3DB808A87392A542" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ProceedsFromStockOptionsExercised" xlink:label="loc_us-gaap_ProceedsFromStockOptionsExercised_33AD432AE5C237577DD508A87392CCCD" xlink:type="locator"/>

<link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_8CB7836C58FD1255DE3D08A8739172CA" xlink:to="loc_us-gaap_ProceedsFromStockOptionsExercised_33AD432AE5C237577DD508A87392CCCD" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitFromExerciseOfStockOptions" xlink:label="loc_us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitFromExerciseOfStockOptions_E94A591346383E6E5B0608A87392F257" xlink:type="locator"/>

<link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_8CB7836C58FD1255DE3D08A8739172CA" xlink:to="loc_us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitFromExerciseOfStockOptions_E94A591346383E6E5B0608A87392F257" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EmployeeServiceShareBasedCompensationCashFlowEffectCashUsedToSettleAwards" xlink:label="loc_us-gaap_EmployeeServiceShareBasedCompensationCashFlowEffectCashUsedToSettleAwards_F8251ED63E86D9ECF0AE08A873928140" xlink:type="locator"/>

<link:definitionArc order="7" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_8CB7836C58FD1255DE3D08A8739172CA" xlink:to="loc_us-gaap_EmployeeServiceShareBasedCompensationCashFlowEffectCashUsedToSettleAwards_F8251ED63E86D9ECF0AE08A873928140" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant_3CA2B89FC4EC44B22D6C08A873925CBC" xlink:type="locator"/>

<link:definitionArc order="8" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_8CB7836C58FD1255DE3D08A8739172CA" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant_3CA2B89FC4EC44B22D6C08A873925CBC" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_MaximumNumberOfSharesThatMayBeIssuedUnderLtipInFormOtherThanStockOptionStockAppreciationRightOrAwardRequiringFullPaymentForSharesByRecipient" xlink:label="loc_cvx_MaximumNumberOfSharesThatMayBeIssuedUnderLtipInFormOtherThanStockOptionStockAppreciationRightOrAwardRequiringFullPaymentForSharesByRecipient_5BB989F332228A5C37D908A873922106" xlink:type="locator"/>

<link:definitionArc order="9" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_8CB7836C58FD1255DE3D08A8739172CA" xlink:to="loc_cvx_MaximumNumberOfSharesThatMayBeIssuedUnderLtipInFormOtherThanStockOptionStockAppreciationRightOrAwardRequiringFullPaymentForSharesByRecipient_5BB989F332228A5C37D908A873922106" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_ShareBasedCompensationArrangementByShareBasedPaymentAwardContractualTerm" xlink:label="loc_cvx_ShareBasedCompensationArrangementByShareBasedPaymentAwardContractualTerm_D6BD283310DB64D8E55308A873923866" xlink:type="locator"/>

<link:definitionArc order="10" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_8CB7836C58FD1255DE3D08A8739172CA" xlink:to="loc_cvx_ShareBasedCompensationArrangementByShareBasedPaymentAwardContractualTerm_D6BD283310DB64D8E55308A873923866" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue_51937DB988DD4197D99608A8739218BF" xlink:type="locator"/>

<link:definitionArc order="11" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_8CB7836C58FD1255DE3D08A8739172CA" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue_51937DB988DD4197D99608A8739218BF" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized" xlink:label="loc_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized_BC37B5A2317CFA56B54D08A873924537" xlink:type="locator"/>

<link:definitionArc order="12" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_8CB7836C58FD1255DE3D08A8739172CA" xlink:to="loc_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized_BC37B5A2317CFA56B54D08A873924537" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1" xlink:label="loc_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1_E38EBB7A11449983DB4408A87392BE4E" xlink:type="locator"/>

<link:definitionArc order="13" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_8CB7836C58FD1255DE3D08A8739172CA" xlink:to="loc_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1_E38EBB7A11449983DB4408A87392BE4E" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_5995003AFEBCACBA6C6508A873924B7A" xlink:type="locator"/>

<link:definitionArc order="14" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_8CB7836C58FD1255DE3D08A8739172CA" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_5995003AFEBCACBA6C6508A873924B7A" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod_84229722DFE7C7BEB3F408A87392EDC5" xlink:type="locator"/>

<link:definitionArc order="15" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_8CB7836C58FD1255DE3D08A8739172CA" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod_84229722DFE7C7BEB3F408A87392EDC5" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod_4EA5763627A0BF75951808A873920C66" xlink:type="locator"/>

<link:definitionArc order="16" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_8CB7836C58FD1255DE3D08A8739172CA" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod_4EA5763627A0BF75951808A873920C66" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod_C4557D887751C312D1B808A873929839" xlink:type="locator"/>

<link:definitionArc order="17" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_8CB7836C58FD1255DE3D08A8739172CA" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod_C4557D887751C312D1B808A873929839" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue_D9090B6DA9A95872F92108A873928E29" xlink:type="locator"/>

<link:definitionArc order="18" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_8CB7836C58FD1255DE3D08A8739172CA" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue_D9090B6DA9A95872F92108A873928E29" xlink:type="arc"/>

</link:definitionLink>

<link:definitionLink xlink:role="http://www.chevron.com/role/StockOptionsAndOtherShareBasedCompensationSummaryOfValuationAssumptionsAndActivityDetails" xlink:type="extended"/>

<link:definitionLink xlink:role="http://www.chevron.com/role/StockOptionsAndOtherShareBasedCompensationTables" xlink:type="extended"/>

<link:definitionLink xlink:role="http://www.chevron.com/role/SummarizedFinancialDataChevronUSAInc" xlink:type="extended"/>

<link:definitionLink xlink:role="http://www.chevron.com/role/SummarizedFinancialDataChevronUSAIncSummaryOfBalanceSheetInformationDetails" xlink:type="extended">

<link:loc xlink:href="cvx-20181231.xsd#cvx_SubsidiaryStatementsCaptionsLineItems" xlink:label="loc_cvx_SubsidiaryStatementsCaptionsLineItems_A08BDE77FDA3F1B5137A7F3C57057966" xlink:type="locator"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_ScheduleOfSubsidiaryFinancialStatementsTable" xlink:label="loc_cvx_ScheduleOfSubsidiaryFinancialStatementsTable_9AA5FAE2F484F9135D797F3C57049DC1" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_cvx_SubsidiaryStatementsCaptionsLineItems_A08BDE77FDA3F1B5137A7F3C57057966" xlink:to="loc_cvx_ScheduleOfSubsidiaryFinancialStatementsTable_9AA5FAE2F484F9135D797F3C57049DC1" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>

<link:loc xlink:href="https://xbrl.sec.gov/dei/2018/dei-2018-01-31.xsd#dei_LegalEntityAxis" xlink:label="loc_dei_LegalEntityAxis_45C58375EC2A688AC50A7F3C5704264F" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_cvx_ScheduleOfSubsidiaryFinancialStatementsTable_9AA5FAE2F484F9135D797F3C57049DC1" xlink:to="loc_dei_LegalEntityAxis_45C58375EC2A688AC50A7F3C5704264F" xlink:type="arc"/>

<link:loc xlink:href="https://xbrl.sec.gov/dei/2018/dei-2018-01-31.xsd#dei_EntityDomain" xlink:label="loc_dei_EntityDomain_A17200BFD8CCB28192597F3C57053440_default" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_45C58375EC2A688AC50A7F3C5704264F" xlink:to="loc_dei_EntityDomain_A17200BFD8CCB28192597F3C57053440_default" xlink:type="arc"/>

<link:loc xlink:href="https://xbrl.sec.gov/dei/2018/dei-2018-01-31.xsd#dei_EntityDomain" xlink:label="loc_dei_EntityDomain_A17200BFD8CCB28192597F3C57053440" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_45C58375EC2A688AC50A7F3C5704264F" xlink:to="loc_dei_EntityDomain_A17200BFD8CCB28192597F3C57053440" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_ChevronUsaIncMember" xlink:label="loc_cvx_ChevronUsaIncMember_FD1F94970344C08ECC467F3C570523EC" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_A17200BFD8CCB28192597F3C57053440" xlink:to="loc_cvx_ChevronUsaIncMember_FD1F94970344C08ECC467F3C570523EC" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AssetsCurrent" xlink:label="loc_us-gaap_AssetsCurrent_750B330EEE57559EA2F87F3C570560E1" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_cvx_SubsidiaryStatementsCaptionsLineItems_A08BDE77FDA3F1B5137A7F3C57057966" xlink:to="loc_us-gaap_AssetsCurrent_750B330EEE57559EA2F87F3C570560E1" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherAssets" xlink:label="loc_us-gaap_OtherAssets_6EDE0B968C0CC9E4E75D7F3C5706DC56" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_cvx_SubsidiaryStatementsCaptionsLineItems_A08BDE77FDA3F1B5137A7F3C57057966" xlink:to="loc_us-gaap_OtherAssets_6EDE0B968C0CC9E4E75D7F3C5706DC56" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LiabilitiesCurrent" xlink:label="loc_us-gaap_LiabilitiesCurrent_D7ECF0D247AB86333AD57F3C5706F4EA" xlink:type="locator"/>

<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_cvx_SubsidiaryStatementsCaptionsLineItems_A08BDE77FDA3F1B5137A7F3C57057966" xlink:to="loc_us-gaap_LiabilitiesCurrent_D7ECF0D247AB86333AD57F3C5706F4EA" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherLiabilities" xlink:label="loc_us-gaap_OtherLiabilities_8BC354C9BDF4AF87BE917F3C5706CACB" xlink:type="locator"/>

<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_cvx_SubsidiaryStatementsCaptionsLineItems_A08BDE77FDA3F1B5137A7F3C57057966" xlink:to="loc_us-gaap_OtherLiabilities_8BC354C9BDF4AF87BE917F3C5706CACB" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest" xlink:label="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_C9F68E4F690B5B4BC5B77F3C5706141C" xlink:type="locator"/>

<link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_cvx_SubsidiaryStatementsCaptionsLineItems_A08BDE77FDA3F1B5137A7F3C57057966" xlink:to="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_C9F68E4F690B5B4BC5B77F3C5706141C" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ContractualObligation" xlink:label="loc_us-gaap_ContractualObligation_AF6B9A184BD5CF40BF687F3C5707EBA3" xlink:type="locator"/>

<link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_cvx_SubsidiaryStatementsCaptionsLineItems_A08BDE77FDA3F1B5137A7F3C57057966" xlink:to="loc_us-gaap_ContractualObligation_AF6B9A184BD5CF40BF687F3C5707EBA3" xlink:type="arc"/>

</link:definitionLink>

<link:definitionLink xlink:role="http://www.chevron.com/role/SummarizedFinancialDataChevronUSAIncSummaryOfIncomeStatementInformationDetails" xlink:type="extended">

<link:loc xlink:href="cvx-20181231.xsd#cvx_SubsidiaryStatementsCaptionsLineItems" xlink:label="loc_cvx_SubsidiaryStatementsCaptionsLineItems_4B405D9B47BB9B1CB87708A874C4A55F" xlink:type="locator"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_ScheduleOfSubsidiaryFinancialStatementsTable" xlink:label="loc_cvx_ScheduleOfSubsidiaryFinancialStatementsTable_FA4D79D310154A81110608A874C4FD36" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_cvx_SubsidiaryStatementsCaptionsLineItems_4B405D9B47BB9B1CB87708A874C4A55F" xlink:to="loc_cvx_ScheduleOfSubsidiaryFinancialStatementsTable_FA4D79D310154A81110608A874C4FD36" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>

<link:loc xlink:href="https://xbrl.sec.gov/dei/2018/dei-2018-01-31.xsd#dei_LegalEntityAxis" xlink:label="loc_dei_LegalEntityAxis_6F016606E35CFFF6B32008A874C4A203" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_cvx_ScheduleOfSubsidiaryFinancialStatementsTable_FA4D79D310154A81110608A874C4FD36" xlink:to="loc_dei_LegalEntityAxis_6F016606E35CFFF6B32008A874C4A203" xlink:type="arc"/>

<link:loc xlink:href="https://xbrl.sec.gov/dei/2018/dei-2018-01-31.xsd#dei_EntityDomain" xlink:label="loc_dei_EntityDomain_9FC0E99C64AA01ADF7AB08A874C4EF15_default" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_6F016606E35CFFF6B32008A874C4A203" xlink:to="loc_dei_EntityDomain_9FC0E99C64AA01ADF7AB08A874C4EF15_default" xlink:type="arc"/>

<link:loc xlink:href="https://xbrl.sec.gov/dei/2018/dei-2018-01-31.xsd#dei_EntityDomain" xlink:label="loc_dei_EntityDomain_9FC0E99C64AA01ADF7AB08A874C4EF15" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_6F016606E35CFFF6B32008A874C4A203" xlink:to="loc_dei_EntityDomain_9FC0E99C64AA01ADF7AB08A874C4EF15" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_ChevronUsaIncMember" xlink:label="loc_cvx_ChevronUsaIncMember_462372F54916BFAB922608A874C49BDA" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_9FC0E99C64AA01ADF7AB08A874C4EF15" xlink:to="loc_cvx_ChevronUsaIncMember_462372F54916BFAB922608A874C49BDA" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax" xlink:label="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_32BCC896944F9CEF5E1908A874C4A0EF" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_cvx_SubsidiaryStatementsCaptionsLineItems_4B405D9B47BB9B1CB87708A874C4A55F" xlink:to="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_32BCC896944F9CEF5E1908A874C4A0EF" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RevenueFromContractWithCustomerIncludingAssessedTax" xlink:label="loc_us-gaap_RevenueFromContractWithCustomerIncludingAssessedTax_F5A7BAC4A9FEA5BE8BBC08A874C59212" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_cvx_SubsidiaryStatementsCaptionsLineItems_4B405D9B47BB9B1CB87708A874C4A55F" xlink:to="loc_us-gaap_RevenueFromContractWithCustomerIncludingAssessedTax_F5A7BAC4A9FEA5BE8BBC08A874C59212" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CostsAndExpenses" xlink:label="loc_us-gaap_CostsAndExpenses_7D6D5E00CEE3CAAC64C208A874C5D24A" xlink:type="locator"/>

<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_cvx_SubsidiaryStatementsCaptionsLineItems_4B405D9B47BB9B1CB87708A874C4A55F" xlink:to="loc_us-gaap_CostsAndExpenses_7D6D5E00CEE3CAAC64C208A874C5D24A" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NetIncomeLoss" xlink:label="loc_us-gaap_NetIncomeLoss_9667ADC2AED216A9F9ED08A874C57A22" xlink:type="locator"/>

<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_cvx_SubsidiaryStatementsCaptionsLineItems_4B405D9B47BB9B1CB87708A874C4A55F" xlink:to="loc_us-gaap_NetIncomeLoss_9667ADC2AED216A9F9ED08A874C57A22" xlink:type="arc"/>

</link:definitionLink>

<link:definitionLink xlink:role="http://www.chevron.com/role/SummarizedFinancialDataChevronUSAIncTables" xlink:type="extended"/>

<link:definitionLink xlink:role="http://www.chevron.com/role/SummarizedFinancialDataTengizchevroilLlp" xlink:type="extended"/>

<link:definitionLink xlink:role="http://www.chevron.com/role/SummarizedFinancialDataTengizchevroilLlpSummaryOfBalanceSheetInformationDetails" xlink:type="extended">

<link:loc xlink:href="cvx-20181231.xsd#cvx_AffiliateStatementsCaptionsLineItems" xlink:label="loc_cvx_AffiliateStatementsCaptionsLineItems_CF631D91C3E518C36B3A08A874B34E97" xlink:type="locator"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_ScheduleOfAffiliateFinancialStatementsTable" xlink:label="loc_cvx_ScheduleOfAffiliateFinancialStatementsTable_098DE5AC65F0B5EF0EDA08A874B367E5" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_cvx_AffiliateStatementsCaptionsLineItems_CF631D91C3E518C36B3A08A874B34E97" xlink:to="loc_cvx_ScheduleOfAffiliateFinancialStatementsTable_098DE5AC65F0B5EF0EDA08A874B367E5" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>

<link:loc xlink:href="https://xbrl.sec.gov/dei/2018/dei-2018-01-31.xsd#dei_LegalEntityAxis" xlink:label="loc_dei_LegalEntityAxis_3872B7BC5234C501BCBB08A874B39677" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_cvx_ScheduleOfAffiliateFinancialStatementsTable_098DE5AC65F0B5EF0EDA08A874B367E5" xlink:to="loc_dei_LegalEntityAxis_3872B7BC5234C501BCBB08A874B39677" xlink:type="arc"/>

<link:loc xlink:href="https://xbrl.sec.gov/dei/2018/dei-2018-01-31.xsd#dei_EntityDomain" xlink:label="loc_dei_EntityDomain_45149B1085032763F14508A874B34D5F_default" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_3872B7BC5234C501BCBB08A874B39677" xlink:to="loc_dei_EntityDomain_45149B1085032763F14508A874B34D5F_default" xlink:type="arc"/>

<link:loc xlink:href="https://xbrl.sec.gov/dei/2018/dei-2018-01-31.xsd#dei_EntityDomain" xlink:label="loc_dei_EntityDomain_45149B1085032763F14508A874B34D5F" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_3872B7BC5234C501BCBB08A874B39677" xlink:to="loc_dei_EntityDomain_45149B1085032763F14508A874B34D5F" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_TengizchevroilLlpMember" xlink:label="loc_cvx_TengizchevroilLlpMember_F884922986A28761DC2208A874B3CA75" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_45149B1085032763F14508A874B34D5F" xlink:to="loc_cvx_TengizchevroilLlpMember_F884922986A28761DC2208A874B3CA75" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EquityMethodInvestmentSummarizedFinancialInformationCurrentAssets" xlink:label="loc_us-gaap_EquityMethodInvestmentSummarizedFinancialInformationCurrentAssets_5BAF47D0F78E3002FD3F08A874B3BF34" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_cvx_AffiliateStatementsCaptionsLineItems_CF631D91C3E518C36B3A08A874B34E97" xlink:to="loc_us-gaap_EquityMethodInvestmentSummarizedFinancialInformationCurrentAssets_5BAF47D0F78E3002FD3F08A874B3BF34" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EquityMethodInvestmentSummarizedFinancialInformationNoncurrentAssets" xlink:label="loc_us-gaap_EquityMethodInvestmentSummarizedFinancialInformationNoncurrentAssets_E9C444689A55EDECDFBF08A874B336D1" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_cvx_AffiliateStatementsCaptionsLineItems_CF631D91C3E518C36B3A08A874B34E97" xlink:to="loc_us-gaap_EquityMethodInvestmentSummarizedFinancialInformationNoncurrentAssets_E9C444689A55EDECDFBF08A874B336D1" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EquityMethodInvestmentSummarizedFinancialInformationCurrentLiabilities" xlink:label="loc_us-gaap_EquityMethodInvestmentSummarizedFinancialInformationCurrentLiabilities_5100D09643E6A86B163F08A874B35475" xlink:type="locator"/>

<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_cvx_AffiliateStatementsCaptionsLineItems_CF631D91C3E518C36B3A08A874B34E97" xlink:to="loc_us-gaap_EquityMethodInvestmentSummarizedFinancialInformationCurrentLiabilities_5100D09643E6A86B163F08A874B35475" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EquityMethodInvestmentSummarizedFinancialInformationNoncurrentLiabilities" xlink:label="loc_us-gaap_EquityMethodInvestmentSummarizedFinancialInformationNoncurrentLiabilities_B26C1F5CAB96D0343A4E08A874B49C0C" xlink:type="locator"/>

<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_cvx_AffiliateStatementsCaptionsLineItems_CF631D91C3E518C36B3A08A874B34E97" xlink:to="loc_us-gaap_EquityMethodInvestmentSummarizedFinancialInformationNoncurrentLiabilities_B26C1F5CAB96D0343A4E08A874B49C0C" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EquityMethodInvestmentSummarizedFinancialInformationEquity" xlink:label="loc_us-gaap_EquityMethodInvestmentSummarizedFinancialInformationEquity_0831A39F5F6C8E7219F608A874B439CD" xlink:type="locator"/>

<link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_cvx_AffiliateStatementsCaptionsLineItems_CF631D91C3E518C36B3A08A874B34E97" xlink:to="loc_us-gaap_EquityMethodInvestmentSummarizedFinancialInformationEquity_0831A39F5F6C8E7219F608A874B439CD" xlink:type="arc"/>

</link:definitionLink>

<link:definitionLink xlink:role="http://www.chevron.com/role/SummarizedFinancialDataTengizchevroilLlpSummaryOfIncomeStatementInformationDetails" xlink:type="extended">

<link:loc xlink:href="cvx-20181231.xsd#cvx_AffiliateStatementsCaptionsLineItems" xlink:label="loc_cvx_AffiliateStatementsCaptionsLineItems_CE079F65254744486FA30BDE6588F5FB" xlink:type="locator"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_ScheduleOfAffiliateFinancialStatementsTable" xlink:label="loc_cvx_ScheduleOfAffiliateFinancialStatementsTable_173367A19E5F82E39BC90BDE65879669" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_cvx_AffiliateStatementsCaptionsLineItems_CE079F65254744486FA30BDE6588F5FB" xlink:to="loc_cvx_ScheduleOfAffiliateFinancialStatementsTable_173367A19E5F82E39BC90BDE65879669" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>

<link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis" xlink:label="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_AEDC2C85779BEF3E787A0BDE6587B2B2" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_cvx_ScheduleOfAffiliateFinancialStatementsTable_173367A19E5F82E39BC90BDE65879669" xlink:to="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_AEDC2C85779BEF3E787A0BDE6587B2B2" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_EquityMethodInvesteeNameDomain" xlink:label="loc_srt_EquityMethodInvesteeNameDomain_A2BD1F10979A01E4B4690BDE65879265_default" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_AEDC2C85779BEF3E787A0BDE6587B2B2" xlink:to="loc_srt_EquityMethodInvesteeNameDomain_A2BD1F10979A01E4B4690BDE65879265_default" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_EquityMethodInvesteeNameDomain" xlink:label="loc_srt_EquityMethodInvesteeNameDomain_A2BD1F10979A01E4B4690BDE65879265" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_AEDC2C85779BEF3E787A0BDE6587B2B2" xlink:to="loc_srt_EquityMethodInvesteeNameDomain_A2BD1F10979A01E4B4690BDE65879265" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_TengizchevroilLlpMember" xlink:label="loc_cvx_TengizchevroilLlpMember_2B937AF5AB89BD088E080BDE6587B9D4" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_EquityMethodInvesteeNameDomain_A2BD1F10979A01E4B4690BDE65879265" xlink:to="loc_cvx_TengizchevroilLlpMember_2B937AF5AB89BD088E080BDE6587B9D4" xlink:type="arc"/>

<link:loc xlink:href="https://xbrl.sec.gov/dei/2018/dei-2018-01-31.xsd#dei_LegalEntityAxis" xlink:label="loc_dei_LegalEntityAxis_E83135D0468BDD4A03840BDE6588D767" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_cvx_ScheduleOfAffiliateFinancialStatementsTable_173367A19E5F82E39BC90BDE65879669" xlink:to="loc_dei_LegalEntityAxis_E83135D0468BDD4A03840BDE6588D767" xlink:type="arc"/>

<link:loc xlink:href="https://xbrl.sec.gov/dei/2018/dei-2018-01-31.xsd#dei_EntityDomain" xlink:label="loc_dei_EntityDomain_5BA0FF6A3E9ABEB20AA40BDE65888255_default" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_E83135D0468BDD4A03840BDE6588D767" xlink:to="loc_dei_EntityDomain_5BA0FF6A3E9ABEB20AA40BDE65888255_default" xlink:type="arc"/>

<link:loc xlink:href="https://xbrl.sec.gov/dei/2018/dei-2018-01-31.xsd#dei_EntityDomain" xlink:label="loc_dei_EntityDomain_5BA0FF6A3E9ABEB20AA40BDE65888255" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_E83135D0468BDD4A03840BDE6588D767" xlink:to="loc_dei_EntityDomain_5BA0FF6A3E9ABEB20AA40BDE65888255" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_TengizchevroilLlpMember" xlink:label="loc_cvx_TengizchevroilLlpMember_3014EC601D1211B67CDF0BDE65881A24" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_5BA0FF6A3E9ABEB20AA40BDE65888255" xlink:to="loc_cvx_TengizchevroilLlpMember_3014EC601D1211B67CDF0BDE65881A24" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EquityMethodInvestmentOwnershipPercentage" xlink:label="loc_us-gaap_EquityMethodInvestmentOwnershipPercentage_5BD0DB3DB239C420D6BC0BDE6588F699" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_cvx_AffiliateStatementsCaptionsLineItems_CE079F65254744486FA30BDE6588F5FB" xlink:to="loc_us-gaap_EquityMethodInvestmentOwnershipPercentage_5BD0DB3DB239C420D6BC0BDE6588F699" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_PercentageOfAffiliateBySummarizedFinancialInformation" xlink:label="loc_cvx_PercentageOfAffiliateBySummarizedFinancialInformation_615E524DE1D2D24886950BDE6588C1ED" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_cvx_AffiliateStatementsCaptionsLineItems_CE079F65254744486FA30BDE6588F5FB" xlink:to="loc_cvx_PercentageOfAffiliateBySummarizedFinancialInformation_615E524DE1D2D24886950BDE6588C1ED" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EquityMethodInvestmentSummarizedFinancialInformationRevenue" xlink:label="loc_us-gaap_EquityMethodInvestmentSummarizedFinancialInformationRevenue_A4F60016035D3ABAA9900BDE6588980B" xlink:type="locator"/>

<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_cvx_AffiliateStatementsCaptionsLineItems_CE079F65254744486FA30BDE6588F5FB" xlink:to="loc_us-gaap_EquityMethodInvestmentSummarizedFinancialInformationRevenue_A4F60016035D3ABAA9900BDE6588980B" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EquityMethodInvestmentSummarizedFinancialInformationCostOfSales" xlink:label="loc_us-gaap_EquityMethodInvestmentSummarizedFinancialInformationCostOfSales_377BB7585FCB7F921BC80BDE6588426D" xlink:type="locator"/>

<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_cvx_AffiliateStatementsCaptionsLineItems_CE079F65254744486FA30BDE6588F5FB" xlink:to="loc_us-gaap_EquityMethodInvestmentSummarizedFinancialInformationCostOfSales_377BB7585FCB7F921BC80BDE6588426D" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EquityMethodInvestmentSummarizedFinancialInformationNetIncomeLoss" xlink:label="loc_us-gaap_EquityMethodInvestmentSummarizedFinancialInformationNetIncomeLoss_D312B255FC1A141C69160BDE6588144D" xlink:type="locator"/>

<link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_cvx_AffiliateStatementsCaptionsLineItems_CE079F65254744486FA30BDE6588F5FB" xlink:to="loc_us-gaap_EquityMethodInvestmentSummarizedFinancialInformationNetIncomeLoss_D312B255FC1A141C69160BDE6588144D" xlink:type="arc"/>

</link:definitionLink>

<link:definitionLink xlink:role="http://www.chevron.com/role/SummarizedFinancialDataTengizchevroilLlpTables" xlink:type="extended"/>

<link:definitionLink xlink:role="http://www.chevron.com/role/SummaryOfSignificantAccountingPolicies" xlink:type="extended"/>

<link:definitionLink xlink:role="http://www.chevron.com/role/SummaryOfSignificantAccountingPoliciesDetails" xlink:type="extended">

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_EF1249466998F85F14F0A49D03484051" xlink:type="locator"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable" xlink:label="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_DFCE95986C499C993C26A49D03487A06" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_EF1249466998F85F14F0A49D03484051" xlink:to="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_DFCE95986C499C993C26A49D03487A06" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AwardTypeAxis" xlink:label="loc_us-gaap_AwardTypeAxis_6CF46B2376D14E057794A49D03484786" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_DFCE95986C499C993C26A49D03487A06" xlink:to="loc_us-gaap_AwardTypeAxis_6CF46B2376D14E057794A49D03484786" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_02DB3F9FB4BC52267F1BA49D0348C632_default" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AwardTypeAxis_6CF46B2376D14E057794A49D03484786" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_02DB3F9FB4BC52267F1BA49D0348C632_default" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_02DB3F9FB4BC52267F1BA49D0348C632" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AwardTypeAxis_6CF46B2376D14E057794A49D03484786" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_02DB3F9FB4BC52267F1BA49D0348C632" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PerformanceSharesMember" xlink:label="loc_us-gaap_PerformanceSharesMember_757F37E95341E04DE83EA49D03484474" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_02DB3F9FB4BC52267F1BA49D0348C632" xlink:to="loc_us-gaap_PerformanceSharesMember_757F37E95341E04DE83EA49D03484474" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PlanNameAxis" xlink:label="loc_us-gaap_PlanNameAxis_367D33510DFE4F6E70E1A49D034862ED" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_DFCE95986C499C993C26A49D03487A06" xlink:to="loc_us-gaap_PlanNameAxis_367D33510DFE4F6E70E1A49D034862ED" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PlanNameDomain" xlink:label="loc_us-gaap_PlanNameDomain_4EB6E4AAFB9568BCA831A49D0348199B_default" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_PlanNameAxis_367D33510DFE4F6E70E1A49D034862ED" xlink:to="loc_us-gaap_PlanNameDomain_4EB6E4AAFB9568BCA831A49D0348199B_default" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PlanNameDomain" xlink:label="loc_us-gaap_PlanNameDomain_4EB6E4AAFB9568BCA831A49D0348199B" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_PlanNameAxis_367D33510DFE4F6E70E1A49D034862ED" xlink:to="loc_us-gaap_PlanNameDomain_4EB6E4AAFB9568BCA831A49D0348199B" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_ChevronLongTermIncentivePlanLTIPMember" xlink:label="loc_cvx_ChevronLongTermIncentivePlanLTIPMember_0998E7876A73EE652AFCA49D03488D90" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanNameDomain_4EB6E4AAFB9568BCA831A49D0348199B" xlink:to="loc_cvx_ChevronLongTermIncentivePlanLTIPMember_0998E7876A73EE652AFCA49D03488D90" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_MaturityPeriodOfBankTimeDepositsMinimum" xlink:label="loc_cvx_MaturityPeriodOfBankTimeDepositsMinimum_588BEC964822DAD1BF5FA49D03483982" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_EF1249466998F85F14F0A49D03484051" xlink:to="loc_cvx_MaturityPeriodOfBankTimeDepositsMinimum_588BEC964822DAD1BF5FA49D03483982" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RevenuePerformanceObligationDescriptionOfTiming" xlink:label="loc_us-gaap_RevenuePerformanceObligationDescriptionOfTiming_F0E65215E96AED35562AA49D0348392E" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_EF1249466998F85F14F0A49D03484051" xlink:to="loc_us-gaap_RevenuePerformanceObligationDescriptionOfTiming_F0E65215E96AED35562AA49D0348392E" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1_10179728224EBC0A0FA0A49D0348943C" xlink:type="locator"/>

<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_EF1249466998F85F14F0A49D03484051" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1_10179728224EBC0A0FA0A49D0348943C" xlink:type="arc"/>

</link:definitionLink>

<link:definitionLink xlink:role="http://www.chevron.com/role/SummaryOfSignificantAccountingPoliciesPolicies" xlink:type="extended"/>

<link:definitionLink xlink:role="http://www.chevron.com/role/Taxes" xlink:type="extended"/>

<link:definitionLink xlink:role="http://www.chevron.com/role/TaxesEffectiveIncomeTaxReconcilliationAndSummaryOfDeferredTaxAssetsAndLiabilitiesDetails" xlink:type="extended"/>

<link:definitionLink xlink:role="http://www.chevron.com/role/TaxesNarrativeDetails" xlink:type="extended">

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ValuationAllowanceLineItems" xlink:label="loc_us-gaap_ValuationAllowanceLineItems_CEDF8BB98FF7451EAC6108A8741B42D1" xlink:type="locator"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ValuationAllowanceTable" xlink:label="loc_us-gaap_ValuationAllowanceTable_94B93A3C115C0173B2D008A8741AE53D" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ValuationAllowanceLineItems_CEDF8BB98FF7451EAC6108A8741B42D1" xlink:to="loc_us-gaap_ValuationAllowanceTable_94B93A3C115C0173B2D008A8741AE53D" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ValuationAllowanceByDeferredTaxAssetAxis" xlink:label="loc_us-gaap_ValuationAllowanceByDeferredTaxAssetAxis_370F78A8534E497EE89D08A8741BC7FD" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ValuationAllowanceTable_94B93A3C115C0173B2D008A8741AE53D" xlink:to="loc_us-gaap_ValuationAllowanceByDeferredTaxAssetAxis_370F78A8534E497EE89D08A8741BC7FD" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DeferredTaxAssetDomain" xlink:label="loc_us-gaap_DeferredTaxAssetDomain_7E532B5709F447B505BF08A8741B3546_default" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_ValuationAllowanceByDeferredTaxAssetAxis_370F78A8534E497EE89D08A8741BC7FD" xlink:to="loc_us-gaap_DeferredTaxAssetDomain_7E532B5709F447B505BF08A8741B3546_default" xlink:type="arc"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_ValuationAllowanceByDeferredTaxAssetAxis_370F78A8534E497EE89D08A8741BC7FD" xlink:to="loc_us-gaap_DeferredTaxAssetDomain_7E532B5709F447B505BF08A8741B3546" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PropertyPlantAndEquipmentMember" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentMember_F6A4D65CAF826DE1455308A8741B94FA" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DeferredTaxAssetDomain_7E532B5709F447B505BF08A8741B3546" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentMember_F6A4D65CAF826DE1455308A8741B94FA" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_ForeignTaxCreditsandTaxLossCarryForwardsMember" xlink:label="loc_cvx_ForeignTaxCreditsandTaxLossCarryForwardsMember_21232D3641D5BAEE1B2608C470555F95" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DeferredTaxAssetDomain_7E532B5709F447B505BF08A8741B3546" xlink:to="loc_cvx_ForeignTaxCreditsandTaxLossCarryForwardsMember_21232D3641D5BAEE1B2608C470555F95" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_Increaseinincometaxexpense" xlink:label="loc_cvx_Increaseinincometaxexpense_1FA0ABC4929A2A48EF2208A8741B67F5" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ValuationAllowanceLineItems_CEDF8BB98FF7451EAC6108A8741B42D1" xlink:to="loc_cvx_Increaseinincometaxexpense_1FA0ABC4929A2A48EF2208A8741B67F5" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncomeTaxExpenseBenefit" xlink:label="loc_us-gaap_IncomeTaxExpenseBenefit_76F5B5441DC17061DB3F08A8741B7C14" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ValuationAllowanceLineItems_CEDF8BB98FF7451EAC6108A8741B42D1" xlink:to="loc_us-gaap_IncomeTaxExpenseBenefit_76F5B5441DC17061DB3F08A8741B7C14" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncomeTaxReconciliationChangeInEnactedTaxRate" xlink:label="loc_us-gaap_IncomeTaxReconciliationChangeInEnactedTaxRate_0EEF50F45CD098425C3808A8741B975D" xlink:type="locator"/>

<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ValuationAllowanceLineItems_CEDF8BB98FF7451EAC6108A8741B42D1" xlink:to="loc_us-gaap_IncomeTaxReconciliationChangeInEnactedTaxRate_0EEF50F45CD098425C3808A8741B975D" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EffectiveIncomeTaxRateContinuingOperations" xlink:label="loc_us-gaap_EffectiveIncomeTaxRateContinuingOperations_0AC134ECA49865E58FD908A8741BA58C" xlink:type="locator"/>

<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ValuationAllowanceLineItems_CEDF8BB98FF7451EAC6108A8741B42D1" xlink:to="loc_us-gaap_EffectiveIncomeTaxRateContinuingOperations_0AC134ECA49865E58FD908A8741BA58C" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_IncreaseDecreaseinDeferredTaxLiabilities" xlink:label="loc_cvx_IncreaseDecreaseinDeferredTaxLiabilities_CFB067BEFAE3FD2116F508A8741B90A6" xlink:type="locator"/>

<link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ValuationAllowanceLineItems_CEDF8BB98FF7451EAC6108A8741B42D1" xlink:to="loc_cvx_IncreaseDecreaseinDeferredTaxLiabilities_CFB067BEFAE3FD2116F508A8741B90A6" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_IncreaseDecreaseinDeferredTaxAssets" xlink:label="loc_cvx_IncreaseDecreaseinDeferredTaxAssets_DFC92E3244A53078817D08A8741B484A" xlink:type="locator"/>

<link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ValuationAllowanceLineItems_CEDF8BB98FF7451EAC6108A8741B42D1" xlink:to="loc_cvx_IncreaseDecreaseinDeferredTaxAssets_DFC92E3244A53078817D08A8741B484A" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OperatingLossCarryforwards" xlink:label="loc_us-gaap_OperatingLossCarryforwards_7A2A0ADA85CA0B9E401708A8741B4693" xlink:type="locator"/>

<link:definitionArc order="7" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ValuationAllowanceLineItems_CEDF8BB98FF7451EAC6108A8741B42D1" xlink:to="loc_us-gaap_OperatingLossCarryforwards_7A2A0ADA85CA0B9E401708A8741B4693" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_TaxCreditCarryforwardAmount" xlink:label="loc_us-gaap_TaxCreditCarryforwardAmount_09D7898F6621F9D0CD0808A8741B55F6" xlink:type="locator"/>

<link:definitionArc order="8" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ValuationAllowanceLineItems_CEDF8BB98FF7451EAC6108A8741B42D1" xlink:to="loc_us-gaap_TaxCreditCarryforwardAmount_09D7898F6621F9D0CD0808A8741B55F6" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DeferredTaxAssetsTaxCreditCarryforwardsForeign" xlink:label="loc_us-gaap_DeferredTaxAssetsTaxCreditCarryforwardsForeign_00918ADCEF54B2B3683108A8741B640B" xlink:type="locator"/>

<link:definitionArc order="9" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ValuationAllowanceLineItems_CEDF8BB98FF7451EAC6108A8741B42D1" xlink:to="loc_us-gaap_DeferredTaxAssetsTaxCreditCarryforwardsForeign_00918ADCEF54B2B3683108A8741B640B" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_TaxCutsandJobsActof2017IncompleteAccountingExistingUndistributedAccumulatedEarningsofForeignSubsidiary" xlink:label="loc_cvx_TaxCutsandJobsActof2017IncompleteAccountingExistingUndistributedAccumulatedEarningsofForeignSubsidiary_40F28301546E64039A8408A8741CD8F6" xlink:type="locator"/>

<link:definitionArc order="10" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ValuationAllowanceLineItems_CEDF8BB98FF7451EAC6108A8741B42D1" xlink:to="loc_cvx_TaxCutsandJobsActof2017IncompleteAccountingExistingUndistributedAccumulatedEarningsofForeignSubsidiary_40F28301546E64039A8408A8741CD8F6" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_PercentageOfImpactOfUnrecognizedTaxBenefitsOnEffectiveTaxRateIfSubsequentlyRecognized" xlink:label="loc_cvx_PercentageOfImpactOfUnrecognizedTaxBenefitsOnEffectiveTaxRateIfSubsequentlyRecognized_38253953FCAE8BCD60EC08A8741CC378" xlink:type="locator"/>

<link:definitionArc order="11" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ValuationAllowanceLineItems_CEDF8BB98FF7451EAC6108A8741B42D1" xlink:to="loc_cvx_PercentageOfImpactOfUnrecognizedTaxBenefitsOnEffectiveTaxRateIfSubsequentlyRecognized_38253953FCAE8BCD60EC08A8741CC378" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_UnrecognizedTaxBenefits" xlink:label="loc_us-gaap_UnrecognizedTaxBenefits_711A6E9EACDACD6002F408A8741C0B83" xlink:type="locator"/>

<link:definitionArc order="12" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ValuationAllowanceLineItems_CEDF8BB98FF7451EAC6108A8741B42D1" xlink:to="loc_us-gaap_UnrecognizedTaxBenefits_711A6E9EACDACD6002F408A8741C0B83" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncomeTaxExaminationPenaltiesAndInterestAccrued" xlink:label="loc_us-gaap_IncomeTaxExaminationPenaltiesAndInterestAccrued_E0CC682264282D71F8AA08A8741C1B3E" xlink:type="locator"/>

<link:definitionArc order="13" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ValuationAllowanceLineItems_CEDF8BB98FF7451EAC6108A8741B42D1" xlink:to="loc_us-gaap_IncomeTaxExaminationPenaltiesAndInterestAccrued_E0CC682264282D71F8AA08A8741C1B3E" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncomeTaxExaminationPenaltiesAndInterestExpense" xlink:label="loc_us-gaap_IncomeTaxExaminationPenaltiesAndInterestExpense_F00838D2930B2D1B534E08A8741C45F6" xlink:type="locator"/>

<link:definitionArc order="14" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ValuationAllowanceLineItems_CEDF8BB98FF7451EAC6108A8741B42D1" xlink:to="loc_us-gaap_IncomeTaxExaminationPenaltiesAndInterestExpense_F00838D2930B2D1B534E08A8741C45F6" xlink:type="arc"/>

</link:definitionLink>

<link:definitionLink xlink:role="http://www.chevron.com/role/TaxesSumamryOfUnrecognizedIncomeTaxBenefitsAndTaxesOtherThanOnIncomeDetails2" xlink:type="extended">

<link:loc xlink:href="cvx-20181231.xsd#cvx_IncomeTaxAuthorityLineItems" xlink:label="loc_cvx_IncomeTaxAuthorityLineItems_EC65E8FFD1ECADA1651EE7C46E5495EA" xlink:type="locator"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_IncomeTaxAuthorityTable" xlink:label="loc_cvx_IncomeTaxAuthorityTable_214DA050FAA1855E22ADE7C46E52E1FE" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_cvx_IncomeTaxAuthorityLineItems_EC65E8FFD1ECADA1651EE7C46E5495EA" xlink:to="loc_cvx_IncomeTaxAuthorityTable_214DA050FAA1855E22ADE7C46E52E1FE" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncomeTaxAuthorityAxis" xlink:label="loc_us-gaap_IncomeTaxAuthorityAxis_0E6F318B5BDA6C0C0D19E7C46E530F50" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_cvx_IncomeTaxAuthorityTable_214DA050FAA1855E22ADE7C46E52E1FE" xlink:to="loc_us-gaap_IncomeTaxAuthorityAxis_0E6F318B5BDA6C0C0D19E7C46E530F50" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncomeTaxAuthorityDomain" xlink:label="loc_us-gaap_IncomeTaxAuthorityDomain_D586CE4DFC280481A76BE7C46E538EE4_default" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_IncomeTaxAuthorityAxis_0E6F318B5BDA6C0C0D19E7C46E530F50" xlink:to="loc_us-gaap_IncomeTaxAuthorityDomain_D586CE4DFC280481A76BE7C46E538EE4_default" xlink:type="arc"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_IncomeTaxAuthorityAxis_0E6F318B5BDA6C0C0D19E7C46E530F50" xlink:to="loc_us-gaap_IncomeTaxAuthorityDomain_D586CE4DFC280481A76BE7C46E538EE4" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DomesticCountryMember" xlink:label="loc_us-gaap_DomesticCountryMember_66522747562C149F9049E7C46E53006D" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeTaxAuthorityDomain_D586CE4DFC280481A76BE7C46E538EE4" xlink:to="loc_us-gaap_DomesticCountryMember_66522747562C149F9049E7C46E53006D" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ForeignCountryMember" xlink:label="loc_us-gaap_ForeignCountryMember_CF01479ACA87F71E2A4AE7C46E54C15C" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeTaxAuthorityDomain_D586CE4DFC280481A76BE7C46E538EE4" xlink:to="loc_us-gaap_ForeignCountryMember_CF01479ACA87F71E2A4AE7C46E54C15C" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ExciseAndSalesTaxes" xlink:label="loc_us-gaap_ExciseAndSalesTaxes_4D3D912CE1F0EBD515E1E7C46E54425C" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_cvx_IncomeTaxAuthorityLineItems_EC65E8FFD1ECADA1651EE7C46E5495EA" xlink:to="loc_us-gaap_ExciseAndSalesTaxes_4D3D912CE1F0EBD515E1E7C46E54425C" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_ConsumerExciseTaxesCollectedonBehalfofThirdParties" xlink:label="loc_cvx_ConsumerExciseTaxesCollectedonBehalfofThirdParties_7322849A347127B3572EE7C46E545ACD" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_cvx_IncomeTaxAuthorityLineItems_EC65E8FFD1ECADA1651EE7C46E5495EA" xlink:to="loc_cvx_ConsumerExciseTaxesCollectedonBehalfofThirdParties_7322849A347127B3572EE7C46E545ACD" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_TaxesOther" xlink:label="loc_us-gaap_TaxesOther_E6BA6D2EFB00C28DE0D7E7C46E54FEDF" xlink:type="locator"/>

<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_cvx_IncomeTaxAuthorityLineItems_EC65E8FFD1ECADA1651EE7C46E5495EA" xlink:to="loc_us-gaap_TaxesOther_E6BA6D2EFB00C28DE0D7E7C46E54FEDF" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RealEstateTaxExpense" xlink:label="loc_us-gaap_RealEstateTaxExpense_4405E76892C92AFD1DDAE7C46E55B61D" xlink:type="locator"/>

<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_cvx_IncomeTaxAuthorityLineItems_EC65E8FFD1ECADA1651EE7C46E5495EA" xlink:to="loc_us-gaap_RealEstateTaxExpense_4405E76892C92AFD1DDAE7C46E55B61D" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_PayrollTaxes" xlink:label="loc_cvx_PayrollTaxes_A151B3ADF0013842E47CE7C46E551675" xlink:type="locator"/>

<link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_cvx_IncomeTaxAuthorityLineItems_EC65E8FFD1ECADA1651EE7C46E5495EA" xlink:to="loc_cvx_PayrollTaxes_A151B3ADF0013842E47CE7C46E551675" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ProductionTaxExpense" xlink:label="loc_us-gaap_ProductionTaxExpense_0D5D5C876BEBF2A5B877E7C46E5558BF" xlink:type="locator"/>

<link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_cvx_IncomeTaxAuthorityLineItems_EC65E8FFD1ECADA1651EE7C46E5495EA" xlink:to="loc_us-gaap_ProductionTaxExpense_0D5D5C876BEBF2A5B877E7C46E5558BF" xlink:type="arc"/>

<link:loc xlink:href="cvx-20181231.xsd#cvx_TaxesOtherThanOnIncome" xlink:label="loc_cvx_TaxesOtherThanOnIncome_A5F1BCC4E7186EAE957FE7C46E557D21" xlink:type="locator"/>

<link:definitionArc order="7" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_cvx_IncomeTaxAuthorityLineItems_EC65E8FFD1ECADA1651EE7C46E5495EA" xlink:to="loc_cvx_TaxesOtherThanOnIncome_A5F1BCC4E7186EAE957FE7C46E557D21" xlink:type="arc"/>

</link:definitionLink>

<link:definitionLink xlink:role="http://www.chevron.com/role/TaxesSummaryOfComponentsOfIncomeTaxDetails" xlink:type="extended"/>

<link:definitionLink xlink:role="http://www.chevron.com/role/TaxesTables" xlink:type="extended"/>

</link:linkbase>

↑Top

Filing Submission 0000093410-19-000008 – Alternative Formats (Word / Rich Text, HTML, Plain Text, et al.)

Chevron Corp – ‘10-K’ for 12/31/18 – ‘EX-101.DEF’

On: Friday, 2/22/19, at 11:25am ET · For: 12/31/18 · Accession #: 93410-19-8 · File #: 1-00368

Previous ‘10-K’: ‘10-K’ on 2/22/18 for 12/31/17 · Next: ‘10-K’ on 2/21/20 for 12/31/19 · Latest: ‘10-K’ on 2/26/24 for 12/31/23

Annual Report — Form 10-K — Sect. 13 / 15(d) – SEA’34Filing Table of Contents

‘EX-101.DEF’ — XBRL Definitions — cvx-20181231_def

This Exhibit is an XBRL XML File.

Annual Report — Form 10-K — Sect. 13 / 15(d) – SEA’34
Filing Table of Contents