<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 NINE  MONTHS  ENDED  SEPTEMBER  30,  2000 AND IS
QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL STATEMENTS.

<MULTIPLIER>                                      1000
<CURRENCY>                                         USD

                             
<PERIOD-TYPE>                   9-MOS
<FISCAL-YEAR-END>                          DEC-31-2000
<PERIOD-START>                             JAN-01-2000
<PERIOD-END>                               SEP-30-2000
<EXCHANGE-RATE>                                      1
<CASH>                                         435,044
<SECURITIES>                                    48,109
<RECEIVABLES>                                3,556,471
<ALLOWANCES>                                    49,527
<INVENTORY>                                          0
<CURRENT-ASSETS>                             5,050,930
<PP&E>                                       1,004,723
<DEPRECIATION>                                 544,496
<TOTAL-ASSETS>                               9,352,515
<CURRENT-LIABILITIES>                        5,745,583
<BONDS>                                      1,888,429
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                        28,076
<OTHER-SE>                                   1,225,101
<TOTAL-LIABILITY-AND-EQUITY>                 9,352,515
<SALES>                                              0
<TOTAL-REVENUES>                             4,351,783
<CGS>                                                0
<TOTAL-COSTS>                                2,583,375
<OTHER-EXPENSES>                             1,168,750
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                              79,007
<INCOME-PRETAX>                                 10,864
<INCOME-TAX>                                   269,276
<INCOME-CONTINUING>                            356,589
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                   356,589
<EPS-BASIC>                                       2.04
<EPS-DILUTED>                                     1.95