<ARTICLE> 5
<LEGEND>
THE SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM EXXON'S
CONDENSED CONSOLIDATED BALANCE SHEET AT 9/30/99 AND EXXON'S CONDENSED
CONSOLIDATED STATEMENT OF INCOME FOR THE NINE MONTHS ENDED 9/30/99, THAT ARE
CONTAINED IN EXXON'S FORM 10-Q FOR THE QUARTERLY PERIOD ENDED 9/30/99.  THE
SCHEDULE IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL STATEMENTS.
</LEGEND>
<MULTIPLIER> 1,000,000

                             
<PERIOD-TYPE>                   9-MOS
<FISCAL-YEAR-END>                          DEC-31-1999
<PERIOD-END>                               SEP-30-1999
<CASH>                                           1,151
<SECURITIES>                                        39
<RECEIVABLES>                                    7,800
<ALLOWANCES>                                        96
<INVENTORY>                                      4,895
<CURRENT-ASSETS>                                18,048
<PP&E>                                         131,990
<DEPRECIATION>                                  65,991
<TOTAL-ASSETS>                                  94,394
<CURRENT-LIABILITIES>                           21,579
<BONDS>                                          4,425
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                         31
<COMMON>                                         2,323
<OTHER-SE>                                      41,480
<TOTAL-LIABILITY-AND-EQUITY>                    94,394
<SALES>                                         88,010
<TOTAL-REVENUES>                                89,378
<CGS>                                           37,265
<TOTAL-COSTS>                                   37,265
<OTHER-EXPENSES>                                12,965
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                                 197
<INCOME-PRETAX>                                  4,903
<INCOME-TAX>                                     1,178
<INCOME-CONTINUING>                              3,725
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                     3,725
<EPS-BASIC>                                       1.54
<EPS-DILUTED>                                     1.52