SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                   ----------

                                    FORM 10-Q

                                   ----------

(Mark One)

      [X]   QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15 (d) OF THE SECURITIES
            EXCHANGE ACT OF 1934

            For the Quarterly Period Ended: September 30, 2004

                                       OR

      [ ]   TRANSITION REPORT PURSUANT TO SECTION 13 OR 15 (d) OF THE SECURITIES
            EXCHANGE ACT OF 1934

            For the transition period from _____________ to ____________

            Commission File Number: 1-10551

                               OMNICOM GROUP INC.
- --------------------------------------------------------------------------------
             (Exact name of registrant as specified in its charter)

            New York                                            13-1514814
- --------------------------------------------------------------------------------
(State or other jurisdiction of                                (IRS Employer
incorporation or organization)                            Identification Number)

   437 Madison Avenue, New York, New York                         10022
- --------------------------------------------------------------------------------
  (Address of principal executive offices)                      (Zip Code)

                                 (212) 415-3600
- --------------------------------------------------------------------------------
              (Registrant's telephone number, including area code)

                                 Not Applicable
- --------------------------------------------------------------------------------
              (Former name, former address and former fiscal year,
                         if changed since last report)

Indicate by check mark whether the registrant (1) has filed all reports required
to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during
the  preceding 12 months (or for such  shorter  period that the  registrant  was
required  to file  such  reports  and  (2)  has  been  subject  to  such  filing
requirements for the past 90 days. YES _X_  NO ___

Indicate  by check mark  whether  the  registrant  is an  accelerated  filer (as
defined in Rule 12 b-2 of the Exchange Act). YES _X_  NO ___

Indicate the number of shares  outstanding  of each of the  issuer's  classes of
common stock, as of the latest practicable date.  186,326,700 (as of October 29,
2004)


                       OMNICOM GROUP INC. AND SUBSIDIAIRES
                                      INDEX

PART I.     FINANCIAL INFORMATION

                                                                        Page No.
                                                                        --------

   Item 1.  Financial Statements

            Consolidated Condensed Balance Sheets -
               September 30, 2004 and December 31, 2003......................  1

            Consolidated Condensed Statements of Income - Three Months
               and Nine Months Ended September 30, 2004 and 2003.............  2

            Consolidated Condensed Statements of Cash Flows -
               Nine Months Ended September 30, 2004 and 2003.................  3

            Notes to Consolidated Condensed Financial Statements.............  4

   Item 2.  Management's Discussion and Analysis of Financial Condition
               And Results of Operations..................................... 10

   Item 3.  Quantitative and Qualitative Disclosures About
               Market Risk................................................... 25

   Item 4.  Controls and Procedures.......................................... 26

PART II.    OTHER INFORMATION

   Item 2.  Changes in Securities, Use of Proceeds and Issuer
               Purchases of Equity Securities................................ 27

   Item 6.  Exhibits and Reports on Form 8-K................................. 27

            Signatures....................................................... 29

            Certifications of Senior Executive Officers


                       OMNICOM GROUP INC. AND SUBSIDIARIES
                      CONSOLIDATED CONDENSED BALANCE SHEETS
                              (Dollars in Millions)



                                                                               (Unaudited)
                                                                              September 30,    December 31,
                                                                                  2004             2003
                                                                              -------------    ------------

                                     ASSETS

                                                                                          
CURRENT ASSETS:
     Cash and cash equivalents .............................................    $   429.1       $ 1,528.7
     Short-term investments at market, which approximates cost .............         24.2            20.2
     Accounts receivable, less allowance for doubtful accounts
        of $63.5 and $69.7 .................................................      4,514.4         4,530.0
     Billable production orders in process, at cost ........................        653.9           440.4
     Prepaid expenses and other current assets .............................        875.8           766.6
                                                                                ---------       ---------
                  Total Current Assets .....................................      6,497.4         7,285.9
                                                                                ---------       ---------

FURNITURE, EQUIPMENT AND LEASEHOLD IMPROVEMENTS, at cost,
     less accumulated depreciation and amortization of $867.1 and $817.1 ...        601.3           596.8
INVESTMENTS IN AFFILIATES ..................................................        151.1           151.2
GOODWILL ...................................................................      6,159.5         5,886.2
INTANGIBLES, net of accumulated amortization of $154.7 and $127.8 ..........        107.8           121.4
DEFERRED TAX BENEFITS ......................................................        264.3           264.6
OTHER ASSETS ...............................................................        348.1           313.9
                                                                                ---------       ---------

                  TOTAL ASSETS .............................................    $14,129.5       $14,620.0
                                                                                =========       =========

                      LIABILITIES AND SHAREHOLDERS' EQUITY

CURRENT LIABILITIES:
     Accounts payable ......................................................    $ 4,926.1       $ 5,513.3
     Advance billings ......................................................        890.5           775.2
     Current portion of long-term debt .....................................        192.2            12.4
     Bank loans ............................................................         33.4            42.4
     Accrued taxes .........................................................        139.5           221.7
     Other liabilities .....................................................      1,152.0         1,197.5
                                                                                ---------       ---------
                  Total Current Liabilities ................................      7,333.7         7,762.5
                                                                                ---------       ---------

LONG-TERM DEBT .............................................................         19.8           197.3
CONVERTIBLE NOTES ..........................................................      2,339.3         2,339.3
DEFERRED COMPENSATION AND OTHER LIABILITIES ................................        320.9           342.9
LONG TERM DEFERRED TAX LIABILITY ...........................................        296.2           204.1
MINORITY INTERESTS .........................................................        174.7           187.3

SHAREHOLDERS' EQUITY:
     Common stock ..........................................................         29.8            29.8
     Additional paid-in capital ............................................      1,817.4         1,815.7
     Retained earnings .....................................................      2,780.6         2,419.0
     Unamortized stock compensation ........................................       (200.9)         (216.4)
     Accumulated other comprehensive income ................................        122.8           109.7
     Treasury stock ........................................................       (904.8)         (571.2)
                                                                                ---------       ---------
                  Total Shareholders' Equity ...............................      3,644.9         3,586.6
                                                                                ---------       ---------
                  TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY ...............    $14,129.5       $14,620.0
                                                                                =========       =========


      The accompanying notes to consolidated condensed financial statements
                    are an integral part of these statements.


                                       1


                       OMNICOM GROUP INC. AND SUBSIDIARIES
                   CONSOLIDATED CONDENSED STATEMENTS OF INCOME
                              (Dollars in Millions)
                                   (Unaudited)



                                           Three Months Ended September 30,      Nine Months Ended September 30,
                                           --------------------------------      -------------------------------
                                                 2004           2003                   2004           2003
                                               --------       --------               --------       --------

                                                                                        
REVENUE ...............................        $2,319.0       $2,028.6               $6,958.1       $6,115.4

OPERATING EXPENSES:
     Salary and service costs .........         1,659.5        1,412.2                4,906.7        4,199.4
     Office and general expenses ......           412.1          399.3                1,230.9        1,177.3
                                               --------       --------               --------       --------
                                                2,071.6        1,811.5                6,137.6        5,376.7
                                               --------       --------               --------       --------

OPERATING PROFIT ......................           247.4          217.1                  820.5          738.7

NET INTEREST EXPENSE:
     Interest expense .................            12.3           15.4                   36.8           42.8
     Interest income ..................            (3.5)          (3.9)                 (10.2)         (10.0)
                                               --------       --------               --------       --------
                                                    8.8           11.5                   26.6           32.8
                                               --------       --------               --------       --------

INCOME BEFORE INCOME TAXES ............           238.6          205.6                  793.9          705.9

INCOME TAXES ..........................            80.3           68.9                  266.9          240.0
                                               --------       --------               --------       --------

INCOME AFTER INCOME TAXES .............           158.3          136.7                  527.0          465.9

EQUITY IN AFFILIATES ..................             3.2            4.0                   10.5            8.3

MINORITY INTERESTS ....................           (16.2)         (16.1)                 (50.5)         (54.1)
                                               --------       --------               --------       --------

        NET INCOME ....................        $  145.3       $  124.6               $  487.0       $  420.1
                                               ========       ========               ========       ========

NET INCOME PER COMMON SHARE:
        Basic .........................        $   0.79       $   0.66               $   2.61       $   2.25
        Diluted .......................        $   0.79       $   0.66               $   2.60       $   2.25

DIVIDENDS DECLARED PER COMMON SHARE ...        $  0.225       $   0.20               $  0.675       $   0.60


      The accompanying notes to consolidated condensed financial statements
                    are an integral part of these statements.


                                       2


                       OMNICOM GROUP INC. AND SUBSIDIARIES
                 CONSOLIDATED CONDENSED STATEMENTS OF CASH FLOWS
                              (Dollars in Millions)
                                   (Unaudited)



                                                                                 Nine Months Ended September 30,
                                                                                      2004              2003
                                                                                   ---------          -------
                                                                                                
Cash flows from operating activities:
Net income  ....................................................................   $   487.0          $ 420.1
     Adjustments to reconcile net income to net cash provided
        by operating activities:
     Depreciation of tangible assets............................................        98.1             92.1
     Amortization of intangible assets..........................................        30.7             22.8
     Minority interests.........................................................        50.5             54.1
     Earnings of affiliates (in excess of) less than dividends received.........        (4.0)             1.4
     Net gain on investment activity............................................       (13.1)             --
     Tax benefit on employee stock plans........................................         9.9              9.0
     Amortization of stock compensation.........................................        89.6            100.1
     Provisions for losses on accounts receivable...............................         8.7              6.4
     Changes in assets and liabilities providing (requiring)
        cash net of acquisitions:
     (Decrease) increase in accounts receivable.................................        (0.6)           118.0
     Increase in billable production orders in process..........................      (211.0)          (211.8)
     Increase in prepaid expenses and other current assets......................      (113.1)           (73.7)
     Net change in other assets and liabilities.................................      (131.4)          (120.3)
     Increase in advanced billings..............................................       113.2             42.9
     Net increase (decrease) in accrued and deferred taxes......................        16.8            (18.7)
     Decrease in accounts payable...............................................      (583.9)          (551.3)
                                                                                   ---------          -------
        Net cash used for operating activities..................................      (152.6)          (108.9)
                                                                                   ---------          -------

Cash flows from investing activities:
     Capital expenditures.......................................................      (103.3)           (95.6)
     Payments for purchases of equity interests in subsidiaries and
        affiliates, net of cash acquired........................................      (241.3)          (271.1)
     Purchases of short-term investments........................................       (13.3)            (4.2)
     Proceeds from sale of short-term investments...............................        10.9             11.7
                                                                                   ---------          -------
        Net cash used in investing activities...................................      (347.0)          (359.2)
                                                                                   ---------          -------

Cash flows from financing activities:
     Decrease in short-term borrowings..........................................        (8.6)            (2.3)
     Proceeds from issuance of debt.............................................         2.4            602.1
     Repayments of principal of long-term debt obligations......................       (14.5)           (67.2)
     Dividends paid.............................................................      (121.6)          (111.8)
     Purchase of treasury shares................................................      (446.5)           (25.9)
     Other, net.................................................................       (27.2)           (24.6)
                                                                                   ---------          -------
        Net cash (used) provided by financing activities........................      (616.0)           370.3
                                                                                   ---------          -------

Effect of exchange rate changes on cash and cash equivalents....................        16.0             (5.3)
                                                                                   ---------          -------
        Net decrease in cash and cash equivalents...............................    (1,099.6)          (103.1)
Cash and cash equivalents at beginning of period................................     1,528.7            667.0
                                                                                   ---------          -------

Cash and cash equivalents at end of period......................................   $   429.1          $ 563.9
                                                                                   =========          =======

Supplemental disclosures:
     Income taxes paid..........................................................   $   168.4          $ 229.6
     Interest paid..............................................................   $    32.0          $  53.7


      The accompanying notes to consolidated condensed financial statements
                    are an integral part of these statements.


                                       3


                       OMNICOM GROUP INC. AND SUBSIDIARIES
              NOTES TO CONSOLIDATED CONDENSED FINANCIAL STATEMENTS

1.    We have prepared the consolidated condensed interim financial statements
      included herein without audit pursuant to Securities and Exchange
      Commission rules. Certain information and footnote disclosures normally
      included in financial statements prepared in accordance with generally
      accepted accounting principles ("GAAP") have been condensed or omitted
      pursuant to these rules.

2.    The accompanying financial statements reflect all adjustments, consisting
      of normally recurring accruals, which in the opinion of management are
      necessary for a fair presentation, in all material respects, of the
      information contained therein. Certain reclassifications have been made to
      the September 30, 2003 and December 31, 2003 reported amounts to conform
      them to the September 30, 2004 presentation. These statements should be
      read in conjunction with the consolidated financial statements and related
      notes included in our annual report on Form 10-K for the year ended
      December 31, 2003.

3.    Results of operations for interim periods are not necessarily indicative
      of annual results.

4.    In accordance with SFAS No. 123, "Accounting for Stock Based
      Compensation," as amended by SFAS No. 148, "Accounting for Stock-Based
      Compensation - Transition and Disclosure, an amendment of FASB Statement
      No. 123," we elected, effective January 1, 2004, to account for
      stock-based employee compensation using the fair value method. As a
      result, the fair value of stock-based employee compensation, including
      unvested employee stock options issued and outstanding, were recorded as
      an expense in the current period utilizing the retroactive restatement
      method as set forth in SFAS 148. Accordingly, our results for the quarter
      and the nine months ended September 30, 2003 have been restated as if we
      had used the fair value method to account for stock-based employee
      compensation. Pre-tax stock-based employee compensation costs for the
      three months ended September 30, 2004 and 2003 were $28.0 million and
      $33.1 million, respectively, and for the nine months ended September 30,
      2004 and 2003 were $89.6 million and $100.1 million, respectively. Also,
      in connection with the restatement, our December 31, 2003 balance sheet
      reflects an increase in the deferred tax benefit of $120.5 million, an
      increase in additional paid-in capital of $434.7 million, an increase in
      unamortized stock compensation of $92.6 million and a decrease in retained
      earnings of $221.6 million.

            The table below presents a reconciliation of net income and earnings
      per share, as reported, to the restated results for the quarter and the
      nine months ended September 30, 2003.


                                       4


                       OMNICOM GROUP INC. AND SUBSIDIARIES
        NOTES TO CONSOLIDATED CONDENSED FINANCIAL STATEMENTS (Continued)



                                                       (Dollars in Millions, Except Per Share Amounts)
                                                       -----------------------------------------------
                                                                          Earnings Per Common Share
                                                                          -------------------------
                                                         Net Income         Basic         Diluted
                                                         ----------         -----         -------

                                                                                  
As reported, quarter ended September 30, 2003.........     $135.3           $0.72          $0.72

Less fair value of stock options issued,
net of taxes..........................................       10.7            0.06           0.06
                                                           ------           -----          -----

Restated, quarter ended September 30, 2003............     $124.6           $0.66          $0.66
                                                           ======           =====          =====

As reported, nine months ended September 30, 2003.....     $454.6           $2.43          $2.42

Less fair value of stock options issued,
net of taxes..........................................       34.5            0.18           0.17
                                                           ------           -----          -----

Restated, nine months ended September 30, 2003........     $420.1           $2.25          $2.25
                                                           ======           =====          =====


5.    Basic earnings per share is based upon the weighted average number of
      common shares outstanding during the period. Diluted earnings per share is
      based on the above, plus, if dilutive, common share equivalents which
      include outstanding options and restricted shares. No adjustments were
      made for any series of our zero-coupon convertible notes because the
      conversion criteria had not been met. For purposes of computing diluted
      earnings per share, 520,000 and 384,000 common share equivalents were
      assumed to be outstanding for the three months ended September 30, 2004
      and 2003, respectively, and 1,257,000 and 142,000 common share equivalents
      were assumed to be outstanding for the nine months ended September 30,
      2004 and 2003, respectively.

            The assumed increase in net income related to the after tax
      compensation expense related to dividends on restricted shares was $318.0
      thousand and $281.0 thousand for the three months ended September 30, 2004
      and 2003, respectively, and $917.0 thousand and $843.0 thousand for the
      nine months ended September 30, 2004 and 2003, respectively.

            The number of shares used in our EPS computations were:



                                             Three Months                         Nine Months
                                          Ended September 30,                 Ended September 30,
                                          -------------------                 -------------------
                                          2004             2003              2004             2003
                                          ----             ----              ----             ----
                                                                              
Basic EPS Computation                 184,080,000      187,499,000       186,259,000      187,076,000
Diluted EPS Computation               184,600,000      187,883,000       187,516,000      187,218,000



                                       5


                       OMNICOM GROUP INC. AND SUBSIDIARIES
        NOTES TO CONSOLIDATED CONDENSED FINANCIAL STATEMENTS (Continued)

6.    Total comprehensive income and its components were:



                                                                 (Dollars in Millions)
                                                                 ---------------------
                                                       Three Months             Nine Months
                                                    Ended September 30,     Ended September 30,
                                                    -------------------     -------------------
                                                      2004      2003          2004      2003
                                                     ------    ------        ------    ------

                                                                           
Net income for the period......................      $145.3    $124.6        $487.0    $420.1

Foreign currency translation adjustment,
net of income taxes of $8.2 and $7.1
and $7.0 and $77.6 for the three months
and nine months ended September 30, 2004
and 2003, respectively.........................        15.2      13.2          13.1     144.1
                                                     ------    ------        ------    ------

Comprehensive income for the period............      $160.5    $137.8        $500.1    $564.2
                                                     ======    ======        ======    ======


7.    All of our wholly and partially owned businesses operate within the
      advertising, marketing and corporate communications services industry.
      These agencies are organized into strategic platforms, client centric
      networks, geographic regions and operating groups. Our businesses provide
      communications services to similar type clients on a global, pan-regional
      and national basis. The businesses have similar cost structures, and are
      subject to the same general economic and competitive risks. Given these
      similarities, we have aggregated their results into one reporting segment.
      A summary of our revenue and long-lived assets by geographic area as of
      September 30, 2004 and 2003 is presented below:



                                                         (in millions of dollars)
                                  ---------------------------------------------------------------------
                                  United          Euro           United        Other
                                  States       Denominated      Kingdom    International   Consolidated
                                  ------       -----------      -------    -------------   ------------
                                                                              
Revenue
3 Months Ended September 30,
   2004                          $1,261.3        $  471.3        $255.5        $330.9        $2,319.0
   2003                           1,105.6           412.1         227.8         283.1         2,028.6

Revenue
9 Months Ended September 30,
   2004                          $3,781.6        $1,430.7        $777.4        $968.4        $6,958.1
   2003                           3,385.5         1,246.3         671.5         812.1         6,115.4

Long-lived Assets
At September 30,
   2004                          $  324.5        $   99.4        $ 89.4        $ 88.0        $  601.3
   2003                             308.1            88.3          86.0          90.0           572.4


8.    Bank loans at September 30, 2004 of $33.4 million are primarily comprised
      of bank overdrafts of our international subsidiaries which are treated as
      unsecured loans pursuant to our bank agreements. In January 2004, in
      connection with the purchase of an office building, we assumed a mortgage
      of $17.1 million which is included in our long-term debt.

            On May 24, 2004, we amended and extended our existing revolving
      credit facilities with a consortium of banks, resulting in a five-year
      $1,500.0 million revolving credit facility which matures May 24, 2009, and
      a $500.0 million 364-day revolving credit facility with a maturity date of
      May 23, 2005. These facilities amended our previous three-year $835.0
      million and $1,200.0 million, 364-day revolving credit


                                       6


                       OMNICOM GROUP INC. AND SUBSIDIARIES
        NOTES TO CONSOLIDATED CONDENSED FINANCIAL STATEMENTS (Continued)

      facilities, respectively. We are also an active participant in the
      commercial paper market with a $1,500.0 million program. Each of our bank
      credit facilities provides credit support for commercial paper issued
      under this program. As of September 30, 2004, no commercial paper was
      outstanding and we had no other borrowings outstanding under these credit
      facilities. The 364-day facility includes a provision which allows us to
      convert all amounts outstanding at expiration of the facility into a
      one-year term loan. The consortium consists of 27 banks, each committing a
      pro rata amount to the five-year and 364-day credit facilities. Citibank
      N.A. acts as administrative agent, ABN Amro acts as syndication agent and
      JPMorgan Chase Bank and HSBC Bank USA act as co-documentation agents for
      the facilities. Other significant lending institutions include Societe
      Generale, Bank of America, Wachovia and Sumitomo Mitsui. These facilities
      provide us with the ability to classify our borrowings under our revolving
      credit facilities or commercial paper issued that could come due within
      one year as long-term debt, as it is our intention to keep the borrowings
      outstanding on a long-term basis.

9.    Included in operating income for the nine months ended September 30, 2004
      is a pre-tax net gain of $13.1 million arising from investment activity
      described below.

            In March 2004, in connection with Seneca Investments LLC's
      ("Seneca") recapitalization, we agreed to exchange our remaining preferred
      stock in Seneca for a $24.0 million senior secured note and 40% of
      Seneca's outstanding common stock. The note, which is due in March 2007,
      bears interest at a rate of 6.25% per annum. Prior to Seneca's
      recapitalization, we were accounting for our investment under the cost
      recovery method. We now account for our investment using the equity
      method. The recapitalization transaction was required to be recorded at
      fair value and, accordingly, we recorded a net pre-tax gain of $24.0
      million. This gain was partially offset by losses of $10.9 million on
      other cost-based investments.

10.   In 2002, the Financial Accounting Standards Board ("FASB") issued
      Statement of Financial Accounting Standards No. 148 (SFAS 148),
      "Accounting for Stock-Based Compensation - Transition and Disclosure - An
      Amendment of FASB No. 123". We adopted SFAS 123 effective January 1, 2004,
      as discussed in Note 4.

            In March 2004, the FASB issued for exposure a Proposed Statement of
      Financial Accounting Standards entitled "Share-Based Payment - an
      amendment of SFAS No. 123 and 95". The proposal requires that the fair
      value of employee stock-based compensation be expensed. Although the
      proposal differs from SFAS 123, as amended by SFAS 148, the new
      requirements will generally apply to newly granted stock or options to
      employees, or previously granted awards that are either modified or
      settled after January 1, 2004. In


                                       7


                       OMNICOM GROUP INC. AND SUBSIDIARIES
        NOTES TO CONSOLIDATED CONDENSED FINANCIAL STATEMENTS (Continued)

      October 2004, the FASB delayed the proposed effective date of the exposure
      draft to any interim or annual period beginning after June 15, 2005. We
      will continue to monitor the progress of the FASB with regard to the final
      requirements of this new standard.

            Effective for reporting periods beginning after March 31, 2004, the
      Emerging Issues Task Force ("EITF") of the FASB released issue No. 03-6,
      "Participating Securities and the Two-Class Method under FASB Statement
      No. 128, Earnings Per Share." The adoption of EITF No. 03-6 did not have
      an impact on our consolidated results of operation or financial position.

            On October 13, 2004, the FASB Board ratified EITF 04-8, "The Effect
      of Contingently Convertible Instruments on Diluted Earnings per Share."
      Adoption of EITF No. 04-8 is required for fiscal years ended after
      December 15, 2004. Assuming no changes are made prior to December 31, 2004
      to our Liquid Yield Option Notes due 2031 and our Zero Coupon Zero Yield
      Notes due 2033, we estimate that EITF 04-8, which requires the use of the
      "if converted" method for these notes, would have reduced our Diluted EPS
      for the nine months ended September 30, 2004 by approximately 4.2% and it
      could reduce diluted EPS in future periods. The rule change will not
      effect the manner in which we calculate diluted EPS with respect to our
      2032 Zero Coupon Convertible Notes, which as discussed in note 11 below,
      were recently amended.

            FASB Interpretation ("FIN") No. 46, "Consolidation of Variable
      Interest Entities - An Interpretation of ARB No. 51", as amended by FIN
      46R was required to be adopted in the first reporting period ending after
      March 15, 2004. FIN 46 addresses the consolidation by business enterprises
      of variable interest entities, as defined in FIN 46, and is based on the
      concept that companies that control another entity through interests,
      other than voting interests, should consolidate the controlled entity. The
      FASB subsequently issued FIN 46R in December 2003 that modified certain
      provisions of FIN 46. The adoption of FIN 46 and FIN 46R did not have an
      impact on, or result in additional disclosure in our financial statements.

11.   On August 12, 2004, we paid holders of our Zero Coupon Zero Yield Notes
      due 2032, $27.50 per $1,000 principal amount of notes as an incentive to
      the holders to not put their notes to us for repurchase. Additionally, the
      holders of the notes due 2032 consented to certain amendments to the
      indenture under which the notes were issued. None of the notes were put to
      us for repurchase and all noteholders consented to the amendments. The
      total payment to the noteholders of $24.5 million is being amortized
      ratably through the next put date. Under the amendments, we will pay cash,
      not shares of our common stock as originally provided for in the
      indenture, to noteholders for the initial principal amount of notes
      surrendered for conversion. The remainder of the conversion value will be
      paid in cash or shares of our common stock, at our election. We also
      amended the method by which contingent cash interest is determined. As a
      result of


                                       8


                       OMNICOM GROUP INC. AND SUBSIDIARIES
        NOTES TO CONSOLIDATED CONDENSED FINANCIAL STATEMENTS (Continued)

      this amendment the potential dilution from the 2032 notes will be included
      in our diluted EPS calculation using the "treasury stock" method and, as a
      result, will not be dilutive until the weighted average share price of our
      stock is greater than the $110.01 conversion price of the bonds.

            On October 21, 2004, we offered to pay holders of our Zero Coupon
      Zero Yield Notes due 2033, $2.50 per $1,000 principal amount of notes as
      an incentive to the holders who consented to an amendment to the indenture
      under which the notes were issued. Under the amendments, we would pay
      cash, not shares of common stock as originally provided for in the
      indenture, to noteholders for the initial principal amount of notes
      surrendered for conversion. The remainder of the conversion value would be
      paid in cash or shares, at our election. Only consenting noteholders will
      be bound by the amendments to the indenture. On November 4, 2004, the
      consent period expired and 73% of the noteholders consented to the
      amendments. We are in the process of amending the notes for which we have
      received consents. The total payment to consenting noteholders will be
      $1.1 million which we will amortize ratably through the next put date.

            Holders of our Liquid Yield Option Notes due 2031, Zero Coupon Zero
      Yield Notes due 2032 and Zero Coupon Zero Yield Notes due 2033, are
      permitted to require us to purchase their notes on dates specified in the
      indentures pursuant to which the respective notes were issued. On November
      4, 2004, we waived our right to pay with shares of our common stock, for
      those notes being put to us for repurchase. We must now pay cash if these
      notes are put to us for repurchase.


                                       9


ITEM 2.  MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL
         CONDITION AND RESULTS OF OPERATIONS

Executive Summary

      We are a holding company which owns industry-leading advertising,
marketing and corporate communications companies that span more than 30
marketing disciplines, 100 countries, 1,500 subsidiary agencies and 5,000
clients. On a global, pan-regional and local basis, our agencies provide
traditional media advertising services as well as marketing services including
customer relationship management, public relations and specialty communications.

      Given our size and breadth, we manage the business by monitoring several
financial and non-financial performance indicators. The key indicators that we
review focus on the areas of revenues and operating expenses.

      Revenue growth is analyzed by reviewing the components and mix of the
growth, including growth by major geographic location, by major marketing
discipline, from currency changes and from acquisition.

Our revenue has historically been derived almost evenly from our domestic and
international operations. For the three months ended September 30, 2004, our
overall revenue growth was 14.3%, of which 4.0% was related to changes in
foreign exchange rates and 1.9% was related to acquired entities. The remainder
of our growth, 8.4%, was organic growth. For the first nine months of 2004, our
overall revenue growth was 13.8%, of which 4.7% was related to changes in
foreign exchange rates and 2.4% was related to acquired entities. The remainder
of our revenue growth, 6.7%, was organic growth. However, we believe that
between 1.5% to 2% of this growth in the quarter could be the result of clients
shifting their marketing programs forward into the third quarter from the fourth
quarter primarily related to the Olympics, rather than as a result of an
increase in their annual spending plans.

      For the three months ended September 30, 2004 and for the first nine
months of 2004, traditional media advertising represented about 42% and 43%,
respectively, of our total revenue and grew by 10.7% and 12.3%, respectively.
For the three months ended September 30, 2004 and in the first nine months of
2004, marketing services represented about 58% and 57%, respectively, of total
revenue and grew by 17.0% and 14.9%, respectively.

      We measure operating expenses in two distinct cost categories: salary and
service costs, and office and general expenses. Because we are a service
business, we monitor these costs on a percentage of revenue basis. On an annual
basis, salary and service costs tend to fluctuate in conjunction with changes in
revenues, whereas office and general expenses, which are not directly related to
servicing clients, normally tend to decrease as a percentage of revenues as
revenues increase because a significant portion of these expenses are relatively
fixed in nature. During the third quarter of 2004, salary and service costs
increased from 69.6% of revenue to 71.6% of revenue. Office and general expenses
decreased from 19.7% of revenue to 17.8% of revenue. During the first nine
months of 2004, salary and service costs increased from 68.7% of revenue to
70.5% of revenue. Office and general expenses decreased from 19.3% of revenue to
17.7% of revenue.


                                       10


ITEM 2. MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL
        CONDITION AND RESULTS OF OPERATIONS (Continued)

      Our net income for the third quarter of 2004 increased by 16.6% to $145.3
million from $124.6 million in the third quarter of 2003, and our diluted EPS
increased by 19.7% to $0.79 from $0.66. Our net income for the first nine months
of 2004 increased by 15.9% to $487.0 million from $420.1 million in the first
nine months of 2003, and our diluted EPS increased by 15.6% to $2.60 from $2.25.

      In accordance with SFAS No. 123, "Accounting for Stock-Based
Compensation", as amended by SFAS No. 148, "Accounting for Stock-Based
Compensation - Transition and Disclosure, an amendment of FASB Statement No.
123", we elected to account for stock-based employee compensation using the fair
value method effective January 1, 2004. As a result, the fair value of
stock-based employee compensation, including unvested employee stock options
issued and outstanding, were recorded as an expense in the current period
utilizing the retroactive restatement method as set forth in SFAS 148.
Accordingly, our results for the quarter ended September 30, 2003 and the nine
months ended September 30, 2003 have been restated as if we had used the fair
value method to account for stock-based employee compensation. Results of
pre-tax stock-based employee compensation costs for the three months ended
September 30, 2004 and 2003 included $28.0 million and $33.1 million,
respectively, and for the nine months ended September 30, 2004 and 2003 included
$89.6 million and $100.1 million, respectively. Also, in connection with the
restatement, the December 31, 2003 balance sheet presented above reflects an
increase in the deferred tax benefit of $120.5 million, an increase in
additional paid-in capital of $434.7 million, an increase in unamortized stock
compensation of $92.6 million and a decrease in retained earnings of $221.6
million.

      The following analysis gives further information about the changes in our
financial performance on a quarterly and nine-month year-to-date basis.


                                       11


ITEM 2. MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL
        CONDITION AND RESULTS OF OPERATIONS (Continued)

Results of Operations: Third Quarter 2004 Compared to Third Quarter 2003

      Revenue: Our third quarter of 2004 consolidated worldwide revenue
increased 14.3% to $2,319.0 million from $2,028.6 million in the comparable
period last year. The effect of foreign exchange impacts increased worldwide
revenue by $82.0 million. Acquisitions, net of disposals, increased worldwide
revenue by $37.8 million in the third quarter of 2004 and organic growth
increased worldwide revenue by $170.6 million. The components of the third
quarter 2004 revenue growth in the U.S. ("domestic") and the remainder of the
world ("international") are summarized below ($ in millions):



                                                    Total                  Domestic            International
                                              -----------------       -----------------      ----------------
                                                  $          %            $          %           $          %
                                              --------     ----       --------     ----      --------     ----
                                                                                    
Third Quarter ended September 30, 2003 ...    $2,028.6       --       $1,105.6       --      $  923.0       --

Components of Revenue Changes:

Foreign exchange impact...................        82.0      4.0%            --       --          82.0      8.9%
Acquisitions..............................        37.8      1.9%          33.3      3.0%          4.5      0.5%
Organic...................................       170.6      8.4%         122.4     11.1%         48.2      5.2%
                                              --------     ----       --------     ----      --------     ----

Third Quarter ended September 30, 2004 ...    $2,319.0     14.3%      $1,261.3     14.1%     $1,057.7     14.6%
                                              ========     ====       ========     ====      ========     ====


The components and percentages are calculated as follows:

      o     The foreign exchange impact component shown in the table is
            calculated by first converting the current period's local currency
            revenue using the average exchange rates from the equivalent prior
            period to arrive at a constant currency revenue (in this case
            $2,237.0 million for the Total column in the table). The foreign
            exchange impact equals the difference between the current period
            revenue in U.S. dollars and the current period revenue in constant
            currency (in this case $2,319.0 million less $2,237.0 million for
            the Total column in the table).

      o     The acquisition component shown in the table is calculated by
            aggregating the applicable prior period revenue of the acquired
            businesses. Netted against this number is the revenue of any
            business included in the prior period reported revenue that was
            disposed of subsequent to the prior period.

      o     The organic component shown in the table is calculated by
            subtracting both the foreign exchange and acquisition revenue
            components from total revenue growth.

      o     The percentage change shown in the table of each component is
            calculated by dividing the individual component amount by the prior
            period revenue base of that component (in this case $2,028.6 million
            for the Total column in the table).


                                       12


ITEM 2. MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL
        CONDITION AND RESULTS OF OPERATIONS (Continued)

      The components of revenue and revenue growth in our primary geographic
markets for the third quarter of 2004 compared to the third quarter of 2003 are
summarized below ($ in millions):

                                              $ Revenue       % Growth
                                              ---------       --------
            United States..................    $1,261.3         14.1%
            Euro Denominated Markets.......       471.3         14.4%
            United Kingdom.................       255.5         12.2%
            Other..........................       330.9         16.9%
                                               --------         ----

            Total..........................    $2,319.0         14.3%
                                               ========         ====

      As indicated, foreign exchange impacts increased our international revenue
by $82.0 million during the quarter ended September 30, 2004. The most
significant impacts resulted from the continued period-over-period strengthening
of the Euro and the British Pound against the U.S. dollar, as our operations in
these markets represented approximately 70.0% of our international revenue.

      Several long-term trends continue to positively affect our business,
including our clients increasingly expanding the focus of their brand strategies
from national markets to the global market. Additionally, in an effort to gain
greater efficiency and effectiveness from their marketing dollars, clients are
increasingly requiring greater coordination of their traditional advertising and
marketing activities and concentrating these activities with a smaller number of
service providers.

      Driven by our clients' continuous demand for more effective and efficient
branding activities, we strive to provide an extensive range of advertising,
marketing and corporate communications services through various client-centric
networks that are organized to meet specific client objectives. These services
include advertising, brand consultancy, crisis communications, custom
publishing, database management, digital and interactive marketing, direct
marketing, directory advertising, entertainment marketing, environmental design,
experiential marketing, field marketing, financial/corporate
business-to-business advertising, graphic arts, healthcare communications,
instore design, investor relations, marketing research, media planning and
buying, multi-cultural marketing, non-profit marketing, organizational
communications, package design, product placement, promotional marketing, public
affairs, public relations, real estate advertising and marketing, recruitment
communications, reputation consulting, retail marketing and sports and event
marketing. In an effort to monitor the changing needs of our clients and to
further expand the scope of our services to key clients, we monitor revenue
across a broad range of disciplines and group them into the following four
categories: traditional media advertising, customer relationship management
(referred to as CRM), public relations and specialty communications, as
summarized below.


                                       13


ITEM 2. MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL
        CONDITION AND RESULTS OF OPERATIONS (Continued)



                                                                    (Dollars in Millions)
                                         --------------------------------------------------------------------------
                                         3rd Quarter     % of        3rd Quarter     % of           $           %
                                             2004       Revenue          2003       Revenue      Growth      Growth
                                         -----------    -------      -----------    -------      ------      ------
                                                                                           
Traditional media advertising             $  967.8       41.8%        $  874.1       43.1%       $ 93.7      10.7%
CRM                                          826.3       35.6%           701.9       34.6%        124.4      17.7%
Public relations                             257.8       11.1%           226.2       11.1%         31.6      14.0%
Specialty communications                     267.1       11.5%           226.4       11.2%         40.7      18.0%
                                          --------                    --------                   ------
                                          $2,319.0                    $2,028.6                   $290.4      14.3%
                                          ========                    ========                   ======


      Certain reclassifications have been made to the third quarter 2003 amounts
in the tables above to conform the numbers to the third quarter 2004 amounts
presented.

      Operating Expenses: Our third quarter 2004 worldwide operating expenses
increased $260.1 million, or 14.4%, to $2,071.6 million from $1,811.5 million in
the third quarter of 2003, as shown below.



                                                                           (Dollars in Millions)
                                          ---------------------------------------------------------------------------------------
                                                                     Three Months Ended September 30,
                                          ---------------------------------------------------------------------------------------
                                                        2004                            2003                       2004 vs 2003
                                          -----------------------------     -----------------------------      ------------------
                                                        %       % of                      %       % of
                                                       of     Total Op.                  of     Total Op.         $          %
                                              $      Revenue    Costs           $      Revenue    Costs        Growth      Growth
                                          --------   -------  ---------     --------   -------  ---------      ------      ------
                                                                                                               
Revenue ...........................       $2,319.0                          $2,028.6                           $290.4      14.3%

Operating expenses:
    Salary and service costs.......        1,659.5    71.6%     80.1%        1,412.2    69.6%     78.0%         247.3      17.5%
    Office and general expenses....          412.1    17.8%     19.9%          399.3    19.7%     22.0%          12.8       3.2%
                                          --------    ----      ----        --------    ----      ----         ------      ----
Total Operating Costs..............        2,071.6    89.3%                  1,811.5    89.3%                   260.1      14.4%

Operating profit...................       $  247.4    10.7%                 $  217.1    10.7%                  $ 30.3      14.0%
                                          ========                          ========                           ======


      Salary and service costs, which are comprised of direct service costs and
salary related costs, increased by $247.3 million, or 17.5%, and represented
80.1% of total operating expenses in the third quarter of 2004 versus 78.0% in
the third quarter of 2003. These expenses also increased as a percentage of
revenue to 71.6% in the third quarter of 2004 from 69.6% in the third quarter of
2003 primarily as a result of increased incentive compensation costs as well as
increases in direct service costs, including increases in costs relating to new
business initiatives and recruitment costs. This was partially offset by a
reduction in severance costs and is consistent with our continued efforts to
increase the variability of our cost structure on a location-by-location basis.

      Office and general expenses, which are comprised of office and equipment
rent, depreciation and amortization of other intangibles, professional fees and
other overhead expenses, increased by $12.8 million, or 3.2%, in the third
quarter of 2004 compared to the same period in 2003. Office and general expenses
decreased as a percentage of our total operating costs in the third quarter of
2004 to 19.9% versus 22.0% in the prior period. Additionally, as a percentage of
revenue, office and general expenses decreased in the third quarter of 2004 to
17.8% from 19.7% in the third quarter of 2003, because these expenses are
relatively fixed in


                                       14


ITEM 2. MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL
        CONDITION AND RESULTS OF OPERATIONS (Continued)

nature and do not necessarily change relative to our revenue growth or changes
in our salary and services costs.

      Net Interest Expense: Our net interest expense in the third quarter of
2004 was $8.8 million, down from $11.5 million in the same period in 2003. The
decrease in our gross interest expense of $3.1 million, was attributed to
ratably amortizing the $25.4 million interest payment made in February 2003
related to our convertible notes due 2031 over the 12-month period ended in
February 2004. No such payment was made in February 2004. This was partially
offset by additional amortization expense related to the $6.7 million interest
payment made in August 2003 and the $24.5 million interest payment made in
August 2004, related to our convertible notes due 2032. Furthermore, interest
expense relative to our (euro)152.4 million 5.20% Euro notes increased due to
the foreign currency change of the Euro relative to the U.S. dollar in the
second quarter of 2004.

      The $24.5 million interest payment made in August 2004 was paid to holders
of our convertible notes due 2032 as an incentive to retain and not put their
notes to us for repurchase. Additionally, the noteholders consented to certain
amendments to the indenture under which the notes were issued. The $24.5 million
interest payment was paid on August 12, 2004 and is being amortized ratably over
the next 12 months and accordingly, interest expense will increase in the fourth
quarter of 2004 compared to the fourth quarter of 2003.

      Income Taxes: Our consolidated effective income tax rate was 33.6% in the
third quarter of 2004, which is comparable to our full-year and third quarter
rate for 2003.

      Earnings Per Share (EPS): For the foregoing reasons, our net income in the
third quarter of 2004 increased $20.7 million, or by 16.6% to $145.3 million
from $124.6 million in the third quarter of 2003. Diluted earnings per share
increased 19.7% to $0.79 in the third quarter of 2004, as compared to $0.66 in
the prior year period for the reasons described above, as well as the impact of
our purchase of treasury shares.


                                       15


ITEM 2. MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL
        CONDITION AND RESULTS OF OPERATIONS (Continued)

Results of Operations: First Nine Months 2004 Compared to First Nine Months 2003

      Revenue: Our first nine months of 2004 consolidated worldwide revenue
increased 13.8% to $6,958.1 million from $6,115.4 million in the comparable
period last year. The effect of foreign exchange impacts increased worldwide
revenue by $287.1 million. Acquisitions, net of disposals, increased worldwide
revenue by $144.7 million in the first nine months of 2004 and organic growth
increased worldwide revenue by $410.9 million. The components of the first nine
months of 2004 revenue growth in the U.S. ("domestic") and the remainder of the
world ("international") are summarized below ($ in millions):



                                                 Total                 Domestic             International
                                           ----------------        ----------------       ----------------
                                               $         %             $         %            $         %
                                           --------    ----        --------    ----       --------    ----
                                                                                 
Nine Months ended September 30, 2003...    $6,115.4      --        $3,385.5      --       $2,729.9      --

Components of Revenue Changes:
Foreign exchange impact................       287.1     4.7%             --      --          287.1    10.5%
Acquisitions...........................       144.7     2.4%          112.1     3.3%          32.6     1.2%
Organic................................       410.9     6.7%          283.9     8.4%         127.0     4.7%
                                           --------    ----        --------    ----       --------    ----

Nine Months ended September 30, 2004...    $6,958.1    13.8%       $3,781.6    11.7%      $3,176.6    16.4%
                                           ========    ====        ========    ====       ========    ====


The components and percentages are calculate d as follows:

      o     The foreign exchange impact component shown in the table is
            calculated by first converting the current period's local currency
            revenue using the average exchange rates from the equivalent prior
            period to arrive at a constant currency revenue (in this case
            $6,671.0 million for the Total column in the table). The foreign
            exchange impact equals the difference between the current period
            revenue in U.S. dollars and the current period revenue in constant
            currency (in this case $6,958.1 million less $6,671.0 million for
            the Total column in the table).

      o     The acquisition component shown in the table is calculated by
            aggregating the applicable prior period revenue of the acquired
            businesses. Netted against this number is the revenue of any
            business included in the prior period reported revenue that was
            disposed of subsequent to the prior period.

      o     The organic component shown in the table is calculated by
            subtracting both the foreign exchange and acquisition revenue
            components from total revenue growth.

      o     The percentage change shown in the table of each component is
            calculated by dividing the individual component amount by the prior
            period revenue base of that component (in this case $6,115.4 million
            for the Total column in the table).

      The components of revenue and revenue growth in our primary geographic
markets for the first nine months of 2004 compared to the first nine months of
2003 are summarized below ($ in millions):


                                       16


ITEM 2. MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL
        CONDITION AND RESULTS OF OPERATIONS (Continued)

                                               $ Revenue      % Growth
                                               ---------      --------
            United States...................    $3,781.6        11.7%
            Euro Denominated Markets........     1,430.7        14.8%
            United Kingdom..................       777.4        15.8%
            Other...........................       968.4        19.3%
                                                --------        ----
            Total...........................    $6,958.1        13.8%
                                                ========        ====

      As indicated, foreign exchange impacts increased our international revenue
by $287.1 million during the first nine months ended September 30, 2004. The
most significant impacts resulted from the continued period-over-period
strengthening of the Euro and the British Pound against the U.S. dollar, as our
operations in these markets represented approximately 70.0% of our international
revenue.

      In an effort to monitor the changing needs of our clients and to further
expand the scope of our services to key clients, we monitor revenue across a
broad range of disciplines and group them into the following four categories:
traditional media advertising, customer relationship management (referred to as
CRM), public relations and specialty communications, as summarized below.



                                                                   (Dollars in Millions)
                                         -------------------------------------------------------------------------
                                         Nine Months      % of       Nine Months    % of           $           %
                                            2004        Revenue         2003       Revenue      Growth      Growth
                                         -----------    -------      -----------   -------      ------      ------
                                                                                          
Traditional media advertising             $3,004.9       43.2%        $2,675.9      43.8%       $329.0      12.3%
CRM                                        2,385.1       34.3%         2,065.6      33.8%        319.5      15.5%
Public relations                             760.1       10.9%           686.2      11.2%         73.9      10.8%
Specialty communications                     808.0       11.6%           687.7      11.2%        120.3      17.5%
                                          --------                    --------                  ------      ----
                                          $6,958.1                    $6,115.4                  $842.7      13.8%
                                          ========                    ========                  ======      ====


      Certain reclassifications have been made to the first nine months of 2003
amounts in the tables above to conform the numbers to the first nine months of
2004 amounts presented.

      Operating Expenses: Our first nine months of 2004 worldwide operating
expense increased $760.9 million, or 14.2%, to $6,137.6 million from $5,376.7
million in the first nine months of 2003, as shown below.



                                                                          (Dollars in Millions)
                                                                     Nine Months Ended September 30,
                                        ------------------------------------------------------------------------------------------
                                                     2004                                2003                      2004 vs 2003
                                        ------------------------------      ------------------------------      ------------------
                                                      %        % of                       %        % of
                                                     of      Total Op.                   of      Total Op.         $          %
                                            $      Revenue     Costs            $      Revenue     Costs        Growth      Growth
                                        --------   -------   ---------      --------   -------   ---------      ------      ------
                                                                                                                 
Revenue ...........................     $6,958.1                            $6,115.4                            $842.7       13.8%
Operating expenses:
    Salary and service costs.......      4,906.7    70.5%      79.9%         4,199.4    68.7%      78.1%         707.3       16.8%
    Office and general expenses....      1,230.9    17.7%      20.1%         1,177.3    19.3%      21.9%          53.6        4.6%
                                        --------    ----       ----         --------    ----       ----         ------       ----
Total Operating Costs..............      6,137.6    88.2%                    5,376.7    87.9%                    760.9       14.2%

Operating profit...................     $  820.5    11.8%                   $  738.7    12.1%                   $ 81.8       11.1%
                                        ========                            ========                            ======



                                       17


ITEM 2. MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL
        CONDITION AND RESULTS OF OPERATIONS (Continued)

      Salary and service costs increased by $707.3 million, or 16.8%, and
represented 79.9% of total operating expenses in the first nine months of 2004
versus 78.1% in the first nine months of 2003. These expenses also increased as
a percentage of revenue to 70.5% in the first nine months of 2004 from 68.7% in
the first nine months of 2003, primarily, as a result of increased incentive
compensation costs as well as increases in direct service costs, including
increases in costs relating to new business initiatives and recruitment costs,
and changes in the mix of our revenues. This was partially offset by a reduction
in severance costs and is consistent with our continued efforts to increase the
variability of our cost structure on a location-by-location basis and the
positive impact in the first quarter of 2004 of previous cost actions.

      Office and general expenses increased by $53.6 million, or 4.6%, in the
first nine months of 2004 compared to the same period in 2003. Office and
general expenses decreased as a percentage of our total operating costs in the
first nine months of 2004 to 20.1% versus 21.9% in the prior period.
Additionally, as a percentage of revenue, office and general expenses decreased
in the first nine months of 2004 to 17.7% from 19.3% in the first nine months of
2003 because these expenses are relatively fixed in nature.

      Included in office and general expense was a net gain of $13.1 million
related to investment activity during the first quarter of 2004. In March 2004,
in connection with Seneca's recapitalization, we agreed to exchange our
remaining preferred stock in Seneca for a $24.0 million senior secured note and
40% of Seneca's outstanding common stock. The note, which is due in March 2007,
bears interest at a rate of 6.25% per annum. The recapitalization transaction
was required to be recorded at fair value and, accordingly, we recorded a
pre-tax net gain of $24.0 million. This gain was partially offset by losses of
$10.9 million on other cost-based investments.

      Excluding the net gain of $13.1 million, office and general expenses were
17.9% of revenue in the first nine months of 2004 compared to 19.3% of revenue
in the first nine months of 2003 and operating margin decreased to 11.6% of
revenue from 12.1% of revenue. In addition to the items discussed above, this
decrease in operating margin resulted from $9.9 million of costs incurred in
connection with the disposal of two non-strategic businesses.

      Net Interest Expense: Our net interest expense in the first nine months of
2004 was $26.6 million, down from $32.8 million in the same period in 2003. Our
gross interest expense also decreased by $6.0 million which is attributed to
ratably amortizing the $25.4 million interest payment made in February 2003
related to our convertible notes due 2031 over the preceding twelve-month period
ended in February 2004. No such payment was made in February 2004. Interest cost
savings also resulted from the issuance of $600.0 million convertible notes due
2033 in June 2003 at a zero percent interest rate. This was partially offset by
additional amortization expense related to the $6.7 million interest payment
made in 2003, amortization of debt issue costs related to the issuance of our
$600 million convertible notes due 2033 and the $24.5 million interest payment
made in August 2004, related to our convertible notes due 2032. In addition,
interest expense relative to the (euro)152.4 million 5.20% Euro note increased
due to the foreign currency change of the Euro relative to the U.S. dollar in
2004.


                                       18


ITEM 2. MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL
        CONDITION AND RESULTS OF OPERATIONS (Continued)

      Income Taxes: Our consolidated effective income tax rate was 33.6% in the
first nine months of 2004, which is comparable to our full year rate for 2003.

      Earnings Per Share (EPS): For the foregoing reasons, our net income in the
first nine months of 2004 increased $66.9 million, or by 15.9% to $487.0 million
from $420.1 million in the first nine months of 2003. Diluted earnings per share
increased 15.6% to $2.60 in the first nine months of 2004, as compared to $2.25
in the prior year period.


                                       19


ITEM 2. MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL
        CONDITION AND RESULTS OF OPERATIONS (Continued)

Critical Accounting Policies

      To assist in better understanding our financial statements and the related
management's discussion and analysis of those results, readers are encouraged to
consider this information together with our discussion of our critical
accounting policies under the heading "Management's Discussion and Analysis of
Financial Condition and Results of Operations" in our Annual Report on Form 10-K
for the year ended December 31, 2003 (the "2003 Form 10-K"), as well as our
consolidated financial statements and the related notes included in our 2003
Form 10-K, for a more complete understanding of all of our accounting policies.

New Accounting Pronouncements

      On June 30, 2004, the Emerging Issues Task Force ("EITF") of the Financial
Accounting Standards Board ("FASB") reached a tentative conclusion with regard
to EITF Issue No. 04-8, Accounting Issues Related to Certain Features of
Contingently Convertible Debt and the Effect on Diluted Earnings per Share. This
tentative conclusion was subsequently modified and ratified by the FASB on
October 13, 2004 and will be effective beginning with our financial statements
for the year ending December 31, 2004. EITF No. 04-8 requires companies to
account for contingently convertible debt using the "if converted" method set
forth in Statement of Financial Accounting Standard No. 128 for purposes of
calculating diluted EPS. Therefore, contingently convertible debt would be
included in the diluted EPS calculation as if the debt had been converted into
common stock. EITF No. 04-8 applies to all contingently convertible debt
instruments including our Liquid Yield Option Notes due 2031 and our Zero Coupon
Zero Yield Notes due 2033 and requires retroactive application to the diluted
EPS of all prior periods presented in the financial statements. We have amended
our Zero Coupon Zero Yield Notes due 2032 so that the notes are compliant with
EITF 90-19 "Instrument C" treatment and as a result will be included in our
diluted EPS calculation using the "treasury stock" method set forth in SFAS 128.
Consequently, the notes will not be dilutive until the weighted average share
price of our common stock is greater than the $110.01 conversion price of the
bonds. Further, EITF 04-8 permits the assumption that the amendment occurred at
the beginning of the first period reported and accordingly, the manner in which
we calculated diluted EPS with respect to our Zero Coupon Zero Yield Notes due
2032 in prior periods will not change.

      We expect that the impact of adopting EITF 04-8 will result in a decrease
to our diluted EPS for the nine-months ended September 30, 2004 of 4.2%.
Further, our previously reported twelve months ended December 31, 2003 diluted
EPS would decrease by 1.5%. Additionally, we are finalizing the process of
amending our Zero Coupon Zero Yield Notes due 2033. On November 4, 2004, we
received consents from 73% of noteholders in response to our offer of October
21, 2004. We are in the process of amending the notes for which we have received
consents. We are also considering amending the Liquid Yield Option Notes due
2031 in a similar fashion to the amendment made to our Zero Coupon Zero Yield
Notes due 2032. We cannot predict whether these notes will be amended.


                                       20


ITEM 2. MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL
        CONDITION AND RESULTS OF OPERATIONS (Continued)

Contingent Acquisition Obligations

      Certain of our acquisitions are structured with additional contingent
purchase price obligations. We utilize contingent purchase price structures in
an effort to minimize the risk to us associated with potential future negative
changes in the performance of the acquired entity during the post-acquisition
transition period. The amount of future contingent purchase price payments that
we would be required to pay for prior acquisitions, assuming that the acquired
businesses perform over the relevant future periods at their current profit
levels, is approximately $361 million as of September 30, 2004. The ultimate
amount payable cannot be predicted with reasonable certainty because it is
dependent upon future results of operations of subject businesses and subject to
changes in foreign currency exchange rates. In accordance with GAAP, we have not
recorded a liability for these items on our balance sheet since the definitive
amount is not determinable or distributable. Actual results can differ from
these estimates and the actual amounts that we pay are likely to be different
from these estimates. Our obligations change from period to period as a result
of payments made during the current period, changes in the previous estimate of
the acquired entities' performance, changes in foreign currency exchange rates
and other factors. These differences could be significant. The contingent
purchase price obligations as of September 30, 2004, calculated assuming that
the acquired businesses perform over the relevant future periods at their
current profit levels, are as follows:

                          (Dollars in Millions)
      --------------------------------------------------------------
      Remainder                                    There-
        2004         2005      2006      2007       after      Total
      ---------      ----      ----      ----       -----      -----
        $26          $166      $63       $65         $41       $361

      In addition, owners of interests in certain of our subsidiaries or
affiliates have the right in certain circumstances to require us to purchase
additional ownership stakes in those companies. Assuming that the subsidiaries
and affiliates perform over the relevant periods at their current profit levels,
the aggregate amount we could be required to pay in future periods is
approximately $265 million, $148 million of which relate to obligations that are
currently exercisable. The ultimate amount payable relating to these
transactions will vary because it is dependent on the future results of
operations of the subject businesses, the timing of the exercise of these
rights, changes in foreign currency exchange rates and other factors. The actual
amount that we pay is likely to be different from this estimate, and the
difference could be significant. The obligations that exist for these agreements
as of September 30, 2004, calculated using the assumptions above, are as
follows:

                                          (Dollars in Millions)
                               -----------------------------------------
                                Currently       Not Currently
                               Exercisable       Exercisable       Total
                               -----------      --------------     -----
      Subsidiary agencies          $124              $107          $231
      Affiliated agencies            24                10            34
                                   ----              ----          ----
           Total                   $148              $117          $265
                                   ====              ====          ====

If these rights were exercised, there would likely be an increase in our net
income as a result of our increased ownership and a reduction of minority
interest expense.


                                       21


ITEM 2. MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL
        CONDITION AND RESULTS OF OPERATIONS (Continued)

Liquidity and Capital Resources

      Our principal non-discretionary funding requirement is our working capital
requirements. In addition, we have contractual obligations related to our debt
and convertible notes, our recurring business operations primarily related to
lease obligations, as well as certain contingent acquisition obligations related
to acquisitions made in prior years.

      Our principal discretionary cash requirements include dividend payments to
our shareholders, purchases of treasury stock, payments for strategic
acquisitions and capital expenditures.

      We have a seasonal working capital cycle. Working capital requirements are
lowest at year-end and higher during the quarters. This occurs because in the
majority of our businesses we act as agent on behalf of our clients, including
when we place media and incur production costs on their behalf. We generally
require collection from our clients prior to our payment for the media and
production cost obligations and these obligations are greatest at the end of the
year.

      Historically, on an annual basis, our discretionary and non-discretionary
spending has been funded from operating cash flow. However, during the year we
manage liquidity by utilizing our credit facilities discussed below.

      Liquidity: We had cash and cash equivalents totaling $429.1 million and
$1,528.7 million at September 30, 2004 and December 31, 2003, respectively. We
also had short-term investments totaling $24.2 million and $20.2 million at
September 30, 2004 and December 31, 2003, respectively. Consistent with our
historical trends in the first nine months of the year, we had negative cash
flow from operations of $152.6 million. We funded this deficit primarily with
cash on hand and by managing our working capital.

      Capital Resources: On May 24, 2004, we amended and extended our existing
revolving credit facilities with a consortium of banks, resulting in a five-year
$1,500.0 million revolving credit facility which matures May 24, 2009, and a
$500.0 million 364-day revolving credit facility with a maturity date of May 23,
2005. These facilities amended our previous three-year, $835.0 million and
$1,200 million, 364-day revolving credit facilities. We are also an active
participant in the commercial paper market with a $1,500.0 million program. Each
of our bank credit facilities provide credit support for issuances under this
program. As of September 30, 2004, no commercial paper was outstanding and we
had no other borrowings outstanding under these credit facilities. The 364-day
facility includes a provision which allows us to convert all amounts outstanding
at expiration of the facility into a one-year term loan. The consortium consists
of 27 banks, each committing a pro rata amount to the five-year and 364-day
facilities. Citibank N.A. acts as administrative agent, ABN Amro acts as
syndication agent and JPMorgan Chase Bank and HSBC Bank USA act as
co-documentation agents for the facilities. Other significant lending
institutions include Societe Generale, Bank of America, Wachovia and Sumitomo
Mitsui. These facilities are a critical component in our analysis of the
liquidity and


                                       22


ITEM 2. MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL
        CONDITION AND RESULTS OF OPERATIONS (Continued)

capital resources that provide us with the ability to classify our borrowings
under our revolving credit facilities or commercial paper issued that could come
due within one year as long-term debt, as it is our intention to keep the
borrowings outstanding on a long-term basis.

      Debt: We had short-term bank loans of $33.4 million and $42.4 million at
September 30, 2004 and December 31, 2003, respectively, which are comprised of
domestic borrowings and bank overdrafts of our international subsidiaries and
are treated as unsecured loans pursuant to our bank agreements.

      At September 30, 2004, we also had a total of $2,339.3 million aggregate
principal amount of convertible notes outstanding, including $847.0 million
Liquid Yield Option Notes due 2031, which were issued in February 2001, $892.3
million Zero Coupon Zero Yield Convertible Notes due 2032, which were issued in
March 2002, and $600.0 million Zero Coupon Zero Yield Convertible Notes due
2033, which were issued in June 2003.

      On August 12, 2004, we paid holders of our Zero Coupon Zero Yield Notes
due 2032, $27.50 per $1,000 principal amount of notes as an incentive to the
holders to not put their notes to us for repurchase and to consent to certain
amendments to the indenture under which the notes were issued. None of the notes
were put to us for repurchase and all noteholders consented to the amendments.
The total payment to the noteholders of $24.5 million is being amortized ratably
over the next twelve months. Under the amendments, we will pay cash, not shares
of our common stock as originally provided for in the indenture, to noteholders
for the initial principal amount of notes surrendered for conversion. The
remainder of the conversion value will be paid in cash or shares of our common
stock, at our election. We also amended the method by which contingent cash
interest is determined.

      At September 30, 2004, we had Euro-denominated bonds outstanding of
(euro)152.4 million or $189.6 million. The bonds pay a fixed rate of 5.2% to
maturity in June 2005. While an increase in the value of the Euro against the
U.S. dollar will result in a greater liability for interest and principal, there
will be a corresponding increase in the dollar value of our Euro-denominated net
assets.

      Our outstanding debt and amounts available under these facilities as of
September 30, 2004 ($ in millions) were as follows:



                                                                                     Debt          Available
                                                                                  Outstanding        Credit
                                                                                  -----------      ---------
                                                                                             
      Bank loans (due in less than 1 year)...................................      $   33.4              --
      $1,500.0 Million Revolver - due May 24, 2009.........................              --        $1,500.0
      $500.0 Million - due May 23, 2005......................................            --           500.0
      (euro)152.4 million 5.20% Euro notes - due June 24, 2005.............           189.6              --
      Convertible notes - due February 7, 2031.............................           847.0              --
      Convertible notes - due July 31, 2032................................           892.3              --
      Convertible notes - due June 15, 2033................................           600.0              --
      Loan notes and sundry - various through 2012.........................            22.4              --
                                                                                   --------        --------
Total......................................................................        $2,584.7        $2,000.0
                                                                                   ========        ========



                                       23


ITEM 2. MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL
        CONDITION AND RESULTS OF OPERATIONS (Continued)

      We believe that our operating cash flow combined with our available lines
of credit and our access to the capital markets are sufficient to support our
foreseeable cash requirements arising from working capital, outstanding debt,
capital expenditures, dividends and acquisitions.


                                       24


ITEM 3. QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

Market Risk

      Our results of operations are subject to risk from the translation to the
U.S. dollar of the revenue and expenses of our foreign operations, which are
generally denominated in the local currency. For the most part, our revenues and
the expenses incurred related to those revenues are denominated in the same
currency. This minimizes the impact that fluctuations in exchange rates will
have on profit margins.

      Our Annual Report on Form 10-K for the year ended December 31, 2003,
provides a more detailed discussion of the market risks affecting our
operations. As of September 30, 2004, no material change had occurred in our
market risks from the disclosure contained in that 10-K.

Forward-Looking Statements

      "Management's Discussion and Analysis of Financial Condition and Results
of Operations" and "Quantitative and Qualitative Disclosures About Market Risk"
set forth in this report contain disclosures which are forward-looking
statements within the meaning of the federal securities laws. Forward-looking
statements include all statements that do not relate solely to historical or
current facts, and can be identified by the use of words such as "may," "will,"
"expect," "project," "estimate," "anticipate," "envisage," "plan" or "continue."
These forward-looking statements are based upon our current plans or
expectations and are subject to a number of uncertainties and risks that could
significantly affect current plans and anticipated actions and our future
financial condition and results. The uncertainties and risks include, but are
not limited to, changes in general economic conditions, competitive factors,
client communication requirements, the hiring and retention of human resources
and other factors. In addition, our international operations are subject to the
risk of currency fluctuations, exchange controls and similar risks discussed
above. As a consequence, current plans, anticipated actions and future financial
condition and results may differ from those expressed in any forward-looking
statements made by us or on our behalf, and those differences could be material.


                                       25


ITEM 4. CONTROLS AND PROCEDURES

      We maintain disclosure controls and procedures designed to ensure that
information required to be included in our SEC reports is recorded, processed,
summarized, analyzed and reported within applicable time periods. During the
90-day period prior to the filing of this report, we conducted an evaluation,
under the supervision and with the participation of our management, including
our CEO and CFO, of the effectiveness of our disclosure controls and procedures.
Based on that evaluation, our CEO and CFO concluded that they believe that our
disclosure controls and procedures were effective to ensure recording,
processing, summarizing, analysis and reporting of information required to be
included in our SEC reports on a timely basis. There have been no significant
changes in our internal controls or other factors that could be reasonably
expected to materially affect the effectiveness of these controls since that
evaluation was completed.


                                       26


PART II. OTHER INFORMATION

Item 2. Changes in Securities, Use of Proceeds and Issuer Purchases of Equity
        Securities

      The following table presents information with respect to purchases of
      common stock of the Company made during the three months ended September
      30, 2004 by us or any of our "affiliated purchasers".



                                                                            (c)
                                                                       Total Number                    (d)
                                (a)                    (b)          of Shares Purchased          Maximum Number
                               Total                 Average        As Part of Publicly        of Shares that May
                             Number of             Price Paid         Announced Plans        Yet Be Purchased Under
During the month:        Shares Purchased (1)       Per Share           or Programs           the Plans or Programs
- -----------------        --------------------      ----------       -------------------      ----------------------
                                                                                        
July 2004                     1,014,800              $71.12                  --                         --
August 2004                   1,229,900              $71.13                  --                         --
September 2004                       --              $   --                  --                         --
                              ---------              ------              ------                     ------
Total                         2,244,700              $71.13                  --                         --
                              =========              ======              ======                     ======


(1)   The shares were purchased in the open market for general corporate
      purposes.

Item 6. Exhibit and Reports on Form 8-K

(a)   Exhibits

      4.1   Second Supplemental Indenture, dated August 12, 2004, among Omnicom
            Group Inc., Omnicom Capital Inc., Omnicom Finance Inc. and JPMorgan
            Chase Bank, as trustee, to the Indenture, dated March 6, 2002, as
            amended by the First Supplemental Indenture, dated February 13,
            2004.

      4.2   Second Supplemental Indenture, dated November 4, 2004, among Omnicom
            Group Inc., Omnicom Capital Inc., Omnicom Finance Inc. and JP Morgan
            Chase Bank, as trustee, to the Indenture, dated February 7, 2001, as
            amended by the First Supplemental Indenture, dated February 13,
            2004.

      4.3   Third Supplemental Indenture, dated November 4, 2004, among Omnicom
            Group Inc., Omnicom Capital Inc., Omnicom Finance Inc. and JPMorgan
            Chase Bank, as trustee, to the Indenture, dated March 6, 2002, as
            amended by the First Supplemental Indenture, dated February 13, 2004
            and the Second Supplemental Indenture dated August 12, 2004.

      4.4   Second Supplemental Indenture, dated November 4, 2004, among Omnicom
            Group Inc., Omnicom Capital Inc., Omnicom Finance Inc. and JPMorgan
            Chase Bank, as trustee, to the Indenture, dated June 10, 2003, as
            amended by the First Supplemental Indenture, dated November 5, 2003.


                                       27


      31.1  Certification of Chief Executive Office and President required by
            Rule 13a-14(a) under the Securities Exchange Act of 1934, as
            amended.

      31.2  Certification of Executive Vice President and Chief Financial
            Officer required by Rule 13a -14(a) under the Securities Exchange
            Act of 1934, as amended.

      32.1  Certification of the Chief Executive Officer and President and the
            Executive Vice President and Chief Financial Officer required by
            Rule 13a-14(b) under the Exchange Act of 1934, as amended, and 18
            U.S.C. ss. 1350.

(b)   Reports on Form 8-K

      On July 27, 2004, we furnished a Current Report on Form 8-K under Item 9
      (Regulation FD Disclosure) and Item 12 (Results of Operations and
      Financial Condition), our press release announcing our financial results
      and the second quarter ended June 30, 2004 and the text of materials used
      in the related call at which such results were discussed.


                                       28


                                   SIGNATURES

      Pursuant to the requirements of the Securities Exchange Act of 1934, the
registrant has duly caused this report to be signed on its behalf by the
undersigned thereunto duly authorized.

                                             OMNICOM GROUP INC.

November 5, 2004                             /s/ Randall J. Weisenburger
                                             -----------------------------------
                                             Randall J. Weisenburger
                                             Executive Vice President
                                             and Chief Financial Officer
                                             (on behalf of Omnicom Group Inc.
                                             and as Principal Financial Officer)


                                       29