<ARTICLE> 5
<LEGEND>
This schedule contains summary financial information extracted from the
consolidated Marsh & McLennan Companies, Inc. and subsidiaries March 31,
1998 financial statements and is qualified in its entirety by reference to 
such financial statements.
</LEGEND>
       
                             
<PERIOD-TYPE>                   3-MOS
<FISCAL-YEAR-END>                          DEC-31-1998
<PERIOD-END>                               MAR-31-1998
<CASH>                                     567,000,000
<SECURITIES>                                         0
<RECEIVABLES>                            1,660,000,000
<ALLOWANCES>                                54,000,000
<INVENTORY>                                          0
<CURRENT-ASSETS>                         2,779,000,000
<PP&E>                                   1,748,000,000
<DEPRECIATION>                             808,000,000
<TOTAL-ASSETS>                           8,344,000,000
<CURRENT-LIABILITIES>                    2,536,000,000
<BONDS>                                  1,163,000,000
<COMMON>                                   172,000,000
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<OTHER-SE>                               3,335,000,000
<TOTAL-LIABILITY-AND-EQUITY>             8,344,000,000
<SALES>                                              0
<TOTAL-REVENUES>                         1,776,000,000
<CGS>                                                0
<TOTAL-COSTS>                            1,372,000,000
<OTHER-EXPENSES>                                     0
<LOSS-PROVISION>                             4,000,000
<INTEREST-EXPENSE>                          28,000,000
<INCOME-PRETAX>                            381,000,000
<INCOME-TAX>                               150,000,000
<INCOME-CONTINUING>                        231,000,000
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                               231,000,000
<EPS-PRIMARY>                                     1.35
<EPS-DILUTED>                                     1.31