<ARTICLE>                  5
<LEGEND>

This schedule contains summary financial information extracted from the
consolidated Marsh & McLennan Companies, Inc. and subsidiaries December 31,
1997 financial statements and is qualified in its entirety by reference to
such financial statements.

</LEGEND>
       
                                              
<PERIOD-TYPE>                                          12-MOS
<FISCAL-YEAR-END>                                 DEC-31-1997
<PERIOD-END>                                      DEC-31-1997
<CASH>                                            424,300,000
<SECURITIES>                                                0
<RECEIVABLES>                                   1,551,000,000
<ALLOWANCES>                                       52,800,000
<INVENTORY>                                                 0
<CURRENT-ASSETS>                                2,566,700,000
<PP&E>                                          1,754,900,000
<DEPRECIATION>                                    797,600,000
<TOTAL-ASSETS>                                  7,912,000,000
<CURRENT-LIABILITIES>                           2,342,400,000
<BONDS>                                         1,239,800,000
<PREFERRED-MANDATORY>                                       0
<PREFERRED>                                                 0
<COMMON>                                          172,400,000
<OTHER-SE>                                      3,061,200,000
<TOTAL-LIABILITY-AND-EQUITY>                    7,912,000,000
<SALES>                                                     0
<TOTAL-REVENUES>                                6,008,600,000
<CGS>                                                       0
<TOTAL-COSTS>                                   5,210,800,000
<OTHER-EXPENSES>                                            0
<LOSS-PROVISION>                                    7,600,000
<INTEREST-EXPENSE>                                106,400,000
<INCOME-PRETAX>                                   715,400,000
<INCOME-TAX>                                      281,200,000
<INCOME-CONTINUING>                               434,200,000
<DISCONTINUED>                                              0
<EXTRAORDINARY>                                             0
<CHANGES>                                                   0
<NET-INCOME>                                      434,200,000
<EPS-PRIMARY>                                            2.66
<EPS-DILUTED>                                            2.60