<ARTICLE> 5
<LEGEND>
This schedule contains summary financial information extracted from the
consolidated Marsh & McLennan Companies, Inc. and subsidiaries December 31, 1998
financial statements and is qualified in its entirety by reference to such
financial statements.
</LEGEND>
       
                             
<PERIOD-TYPE>                   12-MOS
<FISCAL-YEAR-END>                          DEC-31-1998
<PERIOD-END>                               DEC-31-1998
<CASH>                                     610,000,000
<SECURITIES>                                         0
<RECEIVABLES>                            2,007,000,000
<ALLOWANCES>                                98,000,000
<INVENTORY>                                          0
<CURRENT-ASSETS>                         3,245,000,000
<PP&E>                                   2,107,000,000
<DEPRECIATION>                             820,000,000
<TOTAL-ASSETS>                          11,871,000,000
<CURRENT-LIABILITIES>                    5,002,000,000
<BONDS>                                  1,590,000,000
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                   259,000,000
<OTHER-SE>                               3,400,000,000
<TOTAL-LIABILITY-AND-EQUITY>            11,871,000,000
<SALES>                                              0
<TOTAL-REVENUES>                         7,190,000,000
<CGS>                                                0
<TOTAL-COSTS>                            5,770,000,000
<OTHER-EXPENSES>                                     0
<LOSS-PROVISION>                            19,000,000
<INTEREST-EXPENSE>                         140,000,000
<INCOME-PRETAX>                          1,305,000,000
<INCOME-TAX>                               509,000,000
<INCOME-CONTINUING>                        796,000,000
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                               796,000,000
<EPS-PRIMARY>                                     3.11
<EPS-DILUTED>                                     2.98