<ARTICLE>                     5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE
CONSOLIDATED CONDENSED FINANCIAL STATEMENTS OF OMNICOM GROUP INC. AND
SUBSIDIARIES AS OF AND FOR THE SIX MONTHS ENDED JUNE 30, 2000 AND IS
QUALIFIED IN ITS ENTIRETY BU REFERENCE TO SUCH FINANCIAL STATEMENTS.


                             
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                              DEC-31-2000
<PERIOD-END>                                   JUN-30-2000
<CASH>                                             437,808
<SECURITIES>                                        50,201
<RECEIVABLES>                                    3,415,911
<ALLOWANCES>                                        49,415
<INVENTORY>                                              0
<CURRENT-ASSETS>                                 4,913,489
<PP&E>                                             995,798
<DEPRECIATION>                                     541,495
<TOTAL-ASSETS>                                   9,378,992
<CURRENT-LIABILITIES>                            5,803,998
<BONDS>                                          1,634,770
<PREFERRED-MANDATORY>                                    0
<PREFERRED>                                              0
<COMMON>                                            93,543
<OTHER-SE>                                       1,290,146
<TOTAL-LIABILITY-AND-EQUITY>                     9,378,992
<SALES>                                                  0
<TOTAL-REVENUES>                                 2,899,260
<CGS>                                                    0
<TOTAL-COSTS>                                    1,696,880
<OTHER-EXPENSES>                                   784,976
<LOSS-PROVISION>                                     5,383
<INTEREST-EXPENSE>                                  43,439
<INCOME-PRETAX>                                    500,034
<INCOME-TAX>                                       204,724
<INCOME-CONTINUING>                                270,925
<DISCONTINUED>                                           0
<EXTRAORDINARY>                                          0
<CHANGES>                                                0
<NET-INCOME>                                       270,925
<EPS-BASIC>                                           1.55
<EPS-DILUTED>                                         1.48