<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 THREE  MONTHS ENDED MARCH 31,
        1999 AND IS QUALIFIED  IN ITS  ENTIRETY BY  REFERENCE TO SUCH  FINANCIAL
        STATEMENTS.

                   Appendix A to Item 601(c) of Regulation S-K
                       Commercial and Industrial Companies
                           Article 5 of Regulation S-X
                (Dollars in thousands, except per share amounts)
</LEGEND>
       
                                   
<PERIOD-TYPE>                              3-Mos
<FISCAL-YEAR-END>                    Dec-31-1999
<PERIOD-END>                         Mar-31-1999
<CASH>                                   310,673
<SECURITIES>                              47,674
<RECEIVABLES>                          2,812,456
<ALLOWANCES>                              54,187
<INVENTORY>                                    0
<CURRENT-ASSETS>                       3,877,393
<PP&E>                                   833,608
<DEPRECIATION>                           459,584
<TOTAL-ASSETS>                         6,910,236
<CURRENT-LIABILITIES>                  4,472,554
<BONDS>                                1,110,790
<PREFERRED-MANDATORY>                          0
<PREFERRED>                                    0
<COMMON>                                  93,525
<OTHER-SE>                               920,242
<TOTAL-LIABILITY-AND-EQUITY>           6,910,236
<SALES>                                        0
<TOTAL-REVENUES>                       1,146,877
<CGS>                                          0
<TOTAL-COSTS>                            688,301
<OTHER-EXPENSES>                         324,006
<LOSS-PROVISION>                           2,344
<INTEREST-EXPENSE>                        18,472
<INCOME-PRETAX>                          123,323
<INCOME-TAX>                              50,515
<INCOME-CONTINUING>                       65,562
<DISCONTINUED>                                 0
<EXTRAORDINARY>                                0
<CHANGES>                                      0
<NET-INCOME>                              65,562
<EPS-PRIMARY>                               0.37
<EPS-DILUTED>                               0.37