<ARTICLE>                     5
<LEGEND>

This  schedule  contains  summary  financial   information  extracted  from  the
consolidated  Marsh & McLennan  Companies,  Inc. and subsidiaries  June 30, 2000
financial  statements  and is  qualified  in its  entirety by  reference to such
financial statements.





                             
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                                 JUN-30-2000
<PERIOD-END>                                      JUN-30-2000
<CASH>                                            439,000,000
<SECURITIES>                                                0
<RECEIVABLES>                                   2,788,000,000
<ALLOWANCES>                                     (132,000,000)
<INVENTORY>                                                 0
<CURRENT-ASSETS>                                3,695,000,000
<PP&E>                                          2,303,000,000
<DEPRECIATION>                                    964,000,000
<TOTAL-ASSETS>                                 13,636,000,000
<CURRENT-LIABILITIES>                           4,326,000,000
<BONDS>                                         2,349,000,000
<PREFERRED-MANDATORY>                                       0
<PREFERRED>                                                 0
<COMMON>                                          272,000,000
<OTHER-SE>                                      4,367,000,000
<TOTAL-LIABILITY-AND-EQUITY>                   13,636,000,000
<SALES>                                                     0
<TOTAL-REVENUES>                                5,146,000,000
<CGS>                                                       0
<TOTAL-COSTS>                                   4,028,000,000
<OTHER-EXPENSES>                                            0
<LOSS-PROVISION>                                    2,100,000
<INTEREST-EXPENSE>                                128,000,000
<INCOME-PRETAX>                                 1,001,000,000
<INCOME-TAX>                                      388,000,000
<INCOME-CONTINUING>                               613,000,000
<DISCONTINUED>                                              0
<EXTRAORDINARY>                                             0
<CHANGES>                                                   0
<NET-INCOME>                                      613,000,000
<EPS-BASIC>                                              2.28
<EPS-DILUTED>                                            2.15