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, 2000

                                       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 Identification Number)
incorporation or organization)

   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 the number of shares  outstanding  of each of the  issuer's  classes of
common stock, as of the latest practicable date.  177,060,126 (as of October 31,
2000)




                       OMNICOM GROUP INC. AND SUBSIDIARIES
                                      INDEX

PART I. FINANCIAL INFORMATION



                                                                        Page No.
                                                                        --------
 Item 1.  Financial Statements

          Consolidated Condensed Balance Sheets -
              September 30, 2000 and December 31, 1999                      1

          Consolidated Condensed Statements of Income -
              Three Months and Nine Months Ended
              September 30, 2000 and 1999                                   2

          Consolidated Condensed Statements of Cash Flows -
              Nine Months Ended September 30, 2000 and 1999                 3

          Notes to Consolidated Condensed Financial Statements              4

 Item 2.  Management's Discussion and Analysis of Financial Condition
          and Results of Operations                                         8

 Item 3.  Quantitative and Qualitative Disclosures About Market Risk       11


PART II. OTHER INFORMATION

 Item 6.  Exhibits and Reports on Form 8-K                                 12

          Signatures                                                       13



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



                                                                    (Unaudited)
                                                                    September 30,  December 31,
                                                                        2000          1999
                                                                        ----          ----
                                                                            
                                    Assets
                                    ------
Current assets:
    Cash and cash equivalents ...................................   $  435,044    $  576,427
    Short-term investments at market, which approximates cost ...       48,109        17,491
    Accounts receivable, less allowance for doubtful accounts
       of $49,527 and $53,720 ...................................    3,506,944     3,358,304
    Billable production orders in process, at cost ..............      476,948       299,209
    Prepaid expenses and other current assets ...................      583,885       453,862
                                                                    ----------    ----------
           Total Current Assets .................................    5,050,930     4,705,293

    Furniture, equipment and leasehold improvements at cost, less
       accumulated depreciation and amortization of $544,496
       and $522,294 .............................................      460,227       444,722
    Investments in affiliates ...................................      397,596       367,755
    Intangibles, less amortization of $383,652 and $352,081 .....    2,698,514     2,414,941
    Deferred tax benefits .......................................      115,260       120,346
    Long-term investments, at market ............................      247,113       809,675
    Deferred charges and other assets ...........................      382,875       154,905
                                                                    ----------    ----------
           Total Assets .........................................   $9,352,515    $9,017,637
                                                                    ==========    ==========

                     Liabilities and Shareholders' Equity
                     ------------------------------------

Current liabilities:
    Accounts payable ............................................   $3,460,911    $4,112,777
    Advance billings ............................................      514,701       417,044
    Bank loans ..................................................      320,106       130,369
    Accrued taxes and other liabilities .........................    1,418,998     1,317,732
    Dividends payable ...........................................       30,867        31,141
                                                                    ----------    ----------
           Total Current Liabilities ............................    5,745,583     6,009,063
                                                                    ----------    ----------

Long-term debt ..................................................    1,440,202       263,149
Convertible subordinated debentures .............................      448,227       448,483
Deferred compensation and other liabilities .....................      289,147       300,746
Deferred income taxes on unrealized gains .......................       55,743       320,176
Minority interests ..............................................      120,436       123,122

Shareholders' equity:
    Common stock ................................................       28,076        93,543
    Additional paid-in capital ..................................      946,227       808,154
    Retained earnings ...........................................    1,146,955       882,051
    Unamortized restricted stock ................................     (127,949)      (85,919)
    Accumulated other comprehensive income ......................     (166,556)      285,234
    Treasury stock ..............................................     (573,576)     (430,165)
                                                                    ----------    ----------
         Total Shareholders' Equity .............................    1,253,177     1,552,898
                                                                    ----------    ----------
         Total Liabilities and Shareholders' Equity .............   $9,352,515    $9,017,637
                                                                    ==========    ==========


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 Thousands, Except Per Share Data)
                                   (Unaudited)



                                         Three Months Ended September 30,  Nine Months Ended September 30,
                                               2000          1999                2000          1999
                                               ----          ----                ----          ----
                                                                                
Commissions and fees ....................   $1,452,523    $1,210,880          $4,351,783    $3,628,126

Operating expenses:
    Salaries and related costs ..........      886,495       734,260           2,583,375     2,145,264
    Office and general expenses .........      383,774       329,460           1,168,750       990,636
                                            ----------    ----------          ----------    ----------
                                             1,270,269     1,063,720           3,752,125     3,135,900
                                            ----------    ----------          ----------    ----------

Operating profit ........................      182,254       147,160             599,658       492,226

Realized gain on sale of Razorfish shares           --            --             110,044            --

Net interest expense:
    Interest and dividend income ........      (12,069)       (4,685)            (28,094)      (21,161)
    Interest paid or accrued ............       35,568        20,591              79,007        60,111
                                            ----------    ----------          ----------    ----------
                                                23,499        15,906              50,913        38,950
                                            ----------    ----------          ----------    ----------

Income before income taxes ..............      158,755       131,254             658,789       453,276

Income taxes ............................       64,552        53,851             269,276       184,939
                                            ----------    ----------          ----------    ----------

Income after income taxes ...............       94,203        77,403             389,513       268,337
Equity in affiliates ....................        3,107          (202)              6,612         3,576
Minority interests ......................      (11,646)       (6,916)            (39,536)      (28,924)
                                            ----------    ----------          ----------    ----------
      Net income ........................   $   85,664    $   70,285          $  356,589    $  242,989
                                            ==========    ==========          ==========    ==========

Net Income Per Common Share:

Net income:
    Basic ...............................        $0.49         $0.40               $2.04         $1.39
    Diluted .............................        $0.48         $0.39               $1.95         $1.35

Dividends declared per common share .....       $0.175         $0.15              $0.525         $0.45


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 Thousands)
                                   (Unaudited)



                                                                              Nine Months Ended September 30,
                                                                                     2000          1999
                                                                                     ----          ----
                                                                                         
Cash flows from operating activities:
    Net income ...............................................................   $  356,589    $ 242,989
    Adjustments to reconcile net income to net cash
       used for operating activities:
    Gain on sale of Razorfish shares .........................................     (110,044)          --
    Depreciation and amortization of tangible assets .........................       76,741       70,374
    Amortization of intangible assets ........................................       61,958       50,552
    Minority interests .......................................................       39,536       28,924
    Earnings of affiliates less than dividends received ......................        5,674          573
    Decrease in deferred tax benefits ........................................       13,510       10,382
    Provision for losses on accounts receivable ..............................       10,864        3,070
    Amortization of restricted stock .........................................       28,318       20,165
    Increase in accounts receivable ..........................................     (284,385)    (339,807)
    Increase in billable production orders in process ........................     (189,175)     (64,664)
    Increase in prepaid expenses and other current assets ....................     (147,712)    (108,398)
    Decrease in accounts payable .............................................     (501,539)    (258,118)
    Increase/(decrease) in other accrued liabilities .........................      190,819      (74,101)
    Increase in accrued taxes ................................................       40,507        9,821
    Increase in deferred charges and other assets ............................      (82,145)     (13,771)
                                                                                 ----------    ---------
       Net cash used for operating activities ................................     (490,484)    (422,009)
                                                                                 ----------    ---------

Cash flows from investing activities:
    Capital expenditures .....................................................     (109,753)     (83,379)
    Payments for purchases of equity interests in subsidiaries and affiliates,
       net of cash acquired ..................................................     (588,875)    (295,794)
    Proceeds from sales of equity interests in subsidiaries and affiliates ...       16,491        1,108
    Payments for purchases of long-term investments and other assets .........     (178,005)     (63,100)
    Proceeds from sales of long-term investments and other assets ............      166,102       83,684
                                                                                 ----------    ---------
       Net cash used for investing activities ................................     (694,040)    (357,481)
                                                                                 ----------    ---------

Cash flows from financing activities:
    Net increase in short-term borrowings ....................................      327,880      252,109
    Share transactions under employee stock plans ............................       72,788       77,727
    Proceeds from issuance of  long-term debt obligations ....................    1,219,814      530,941
    Repayments of principal of long-term debt obligations ....................     (150,592)     (75,035)
    Dividends and loans to/from affiliates and minority shareholders .........     (110,738)     (30,182)
    Dividends paid ...........................................................      (91,959)     (77,758)
    Purchase of treasury shares ..............................................     (225,876)    (252,786)
                                                                                 ----------    ---------
       Net cash provided by financing activities .............................    1,041,317      425,016
                                                                                 ----------    ---------

Effect of exchange rate changes on cash and cash equivalents .................        1,824        1,708
                                                                                 ----------    ---------
       Net decrease in cash and cash equivalents .............................     (141,383)    (352,766)
Cash and cash equivalents at beginning of period .............................      576,427      648,781
                                                                                 ----------    ---------
Cash and cash equivalents at end of period ...................................   $  435,044    $ 296,015
                                                                                 ==========    =========

Supplemental Disclosures:
   Income taxes paid .........................................................   $  151,121    $ 126,687
                                                                                 ==========    =========
   Interest paid .............................................................   $   86,770    $  70,066
                                                                                 ==========    =========


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.          The consolidated  condensed  interim financial  statements  included
      herein have been prepared by the Company,  without audit,  pursuant to the
      rules and regulations of the Securities and Exchange  Commission.  Certain
      information  and  footnote  disclosures  normally  included  in  financial
      statements  prepared in  accordance  with  generally  accepted  accounting
      principles  have been  condensed  or  omitted  pursuant  to such rules and
      regulations.

2.          These  statements  reflect all  adjustments,  consisting of normally
      recurring accruals which, in the opinion of management,  are necessary for
      a  fair  presentation  of  the  information  contained  therein.   Certain
      reclassifications  have been made to the  September  30, 1999 and December
      31, 1999  reported  amounts to conform  them with the  September  30, 2000
      presentation.  These consolidated condensed financial statements should be
      read in conjunction with the consolidated  financial  statements and notes
      thereto  included in the Company's annual report on Form 10-K for the year
      ended December 31, 1999.

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

4.          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,  and if  dilutive,
      adjusted  for the  assumed  conversion  of the  Company's  2.25% and 4.25%
      Convertible  Subordinated  Debentures (the  "Debentures")  and the assumed
      increase in net income for the after tax interest cost of the  Debentures.
      In determining  if the Debentures  were dilutive at September 30, 2000 and
      1999, the Debentures  were assumed to be converted for each entire period.
      For purposes of computing  diluted earnings per share for the three months
      ended  September  30,  2000  and  1999,   respectively,   177,489,000  and
      178,071,000   common   share   equivalents   were  assumed  to  have  been
      outstanding;  additionally, 11,542,000 and 6,936,000 shares, respectively,
      were  assumed to have been  converted  related to the  Debentures  and the
      assumed  increase in net income used in the computation was $4,452,000 and
      $2,396,000,  respectively.  For purposes of computing diluted earnings per
      share for the nine months ended September 30, 2000 and 1999, respectively,
      177,898,000 and 178,532,000  common share equivalents were assumed to have
      been  outstanding;   additionally,   11,547,000  and  11,552,000   shares,
      respectively,   were  assumed  to  have  been  converted  related  to  the
      Debentures and the assumed  increase in net income used in the computation
      was $13,459,000 and $13,469,000,  respectively.  The number of shares used
      in the  computations  of basic and  diluted  earnings  per  share  were as
      follows:

                               Three Months                  Nine Months
                            Ended September 30,          Ended September 30,
                            -------------------          -------------------
                            2000           1999          2000           1999
                            ----           ----          ----           ----
          Basic EPS     175,009,000    175,111,000   174,891,000    175,391,000
          Diluted EPS   189,031,000    185,007,000   189,445,000    190,084,000


                                       4


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

5. Total comprehensive income and its components were as follows:



                                                                             ($ in 000's)
                                                           Three Months Ended           Nine Months Ended
                                                              September 30,               September 30,
                                                              -------------               -------------
                                                           2000          1999          2000           1999
                                                           ----          ----          ----           ----
                                                                                        
      Net income for the period                         $ 85,664       $70,285      $ 356,589       $242,989

      Unrealized loss on Long-Term
      Investments (a)                                    (93,273)                    (275,915)

      Reclassification to realized gain on sale
      of Razorfish shares, net of income
      taxes of $46,218                                                                (63,826)

      Foreign currency translation adjustment (b)        (43,935)       26,885       (112,049)        (6,605)
                                                        --------       -------      ---------       --------

      Comprehensive (loss) income for
           the period                                   $(51,544)      $97,170      $ (95,201)      $236,384
                                                        ========       =======      =========       ========


      (a)   net of income tax benefit of $64,816 and  $191,735 for the three and
            nine-month periods ended September 30, 2000, respectively.

      (b)   net of income  taxes of  $30,530  and  $18,683  for the  three-month
            periods ended September 30, 2000 and 1999, respectively, and $77,863
            and $4,590 for the nine-month  periods ended  September 30, 2000 and
            1999, respectively.

            During the nine-month period ended  September 30, 2000,  the Company
      sold a portion of its ownership  interest in Razorfish Inc. and realized a
      pre-tax gain of approximately $110 million. Included in net income for the
      period is $63,826,000 related to this transaction and comprehensive income
      for the period has been  adjusted to reflect the  reclassification  of the
      gain from unrealized to realized.

            During  the first  quarter  of the year  2000,  certain  interactive
      marketing  agencies,  in which the Company  holds an  ownership  interest,
      filed initial public  offerings of their equity  securities.  Accordingly,
      the  Company  adjusted  the  carrying  value of these  holdings to reflect
      market  value and recorded an  unrealized  pre-tax gain of $284 million in
      comprehensive  income for the  three-month  period  ended March 31,  2000.
      During the second and third quarters of the year 2000, the market value of
      the Company's  investments in interactive  marketing  agencies,  including
      those  discussed  above,  declined  and the  unrealized  loss in  value is
      included  in  unrealized  loss on  Long-Term  Investments  in  arriving at
      comprehensive  loss for the three and nine-month  periods ended  September
      30, 2000.  Despite the loss in the current period  included in Accumulated
      Comprehensive  Income,  due to the unrealized  gains recorded in the prior
      year the carrying value, which reflects market value, of these investments
      is substantially greater than their historical cost at September 30, 2000.


                                       5


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

6.          In June 1998,  the Financial  Accounting  Standards  Board  ("FASB")
      issued Statement of Financial  Accounting Standards No. 133, as amended by
      FASB No. 137 and 138,  "Accounting for Derivative  Instruments and Hedging
      Activities"  ("SFAS  No.  133")  which the  Company is  required  to adopt
      effective  January 1, 2001. SFAS No. 133 cannot be applied  retroactively.
      SFAS No. 133 establishes accounting and reporting standards requiring that
      every derivative  instrument  (including  certain  derivative  instruments
      embedded in other contracts) be recorded in the balance sheet as either an
      asset or liability  measured at its fair value. SFAS No. 133 requires that
      changes in the derivative's fair value be recognized currently in earnings
      unless specific hedge accounting  criteria are met. Special accounting for
      qualifying hedges allows a derivative's gains and losses to offset related
      results on the hedged item in the income  statement,  and requires  that a
      company must formally document, designate, and assess the effectiveness of
      transactions that receive hedge accounting.

            The Company intends to adopt SFAS No. 133 for its fiscal year ending
      December 31, 2001.  The impact of SFAS No. 133 on the Company's  financial
      statements  will  depend  on  a  variety  of  factors,   including  future
      interpretative  guidance from the FASB, the future level of forecasted and
      actual foreign currency transactions,  the extent of the Company's hedging
      activities, the types of hedging instruments used and the effectiveness of
      such  instruments.  However,  the  Company  does not believe the effect of
      adopting SFAS No. 133 will be material to its financial position.

            Additionally,   in  December  1999  the   Securities   and  Exchange
      Commission  (SEC) issued Staff  Accounting  Bulletin 101 (SAB 101),  which
      will become  effective  for the Company in the fourth  quarter  2000.  The
      Company is  substantially in compliance with the provisions of SAB 101 and
      accordingly  there will be no material  impact on the Company's  financial
      statements as a result of SAB 101.


                                       6


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

7.          The Company's  wholly-owned and  partially-owned  businesses operate
      within the corporate  communications  services  operating  segment.  These
      businesses provide a variety of communications services to clients through
      several  worldwide,  national and regional  independent agency brands. The
      businesses  exhibit  similar  economic  characteristics  driven from their
      consistent efforts to create customer driven marketing  communications and
      services that build their clients' businesses.  A summary of the Company's
      operations by geographic  area as of September 30, 2000 and 1999,  and for
      the three and nine-months then ended is presented below:



                                                                 (Dollars in Thousands)
                                   ---------------------------------------------------------------------------------------
                                       United      United                            Other        Other
                                       States     Kingdom    Germany      France     Europe    International  Consolidated
                                       ------     -------    -------      ------     ------    -------------  ------------
                                                                                       
      Commissions and Fees
      3 months Ended September 30:
        2000                           $775,698   $181,927   $105,458     $99,118    $124,714    $165,608    $1,452,523
        1999                           $608,670   $172,779    $98,359     $78,671    $125,314    $127,087    $1,210,880

      Commissions and Fees
      9 months Ended September 30:
        2000                         $2,298,438   $573,452   $312,672    $278,065    $405,132    $484,024    $4,351,783
        1999                         $1,832,114   $506,787   $290,795    $255,354    $381,308    $361,768    $3,628,126

      Long-Lived Assets
      at September 30:
        2000                           $245,163    $92,760     $9,126     $15,812     $34,855     $62,511      $460,227
        1999                           $165,721   $101,907    $11,887     $15,784     $37,320     $57,715      $390,334


8.          On  April  27,  2000,  the   Company   extended   its  $750  million
      revolving credit facility (the "Facility"). The Facility was renewed under
      the same terms with an additional  provision,  which allows the Company to
      convert  all amounts  outstanding  under the  Facility to a one-year  term
      loan.  Additionally,  on July  31,  2000  the  Facility  was  amended  and
      increased to $1 billion. The Facility, which allows for the issuance of $1
      billion of commercial paper, expires on April 26, 2001. In addition to the
      $1 billion credit facility the Company has a $500 million 5-year revolving
      credit facility available which also allows for the issuance of commercial
      paper and  expires  on June 30,  2003  (together  with the  Facility,  the
      "Facilities").

            Amounts  borrowed or issued under the  Facilities  at September  30,
      2000, which include commercial paper of $1,040.1 million and bank loans of
      $200 million,  were classified as long-term debt.  Amounts available under
      the Facilities at September 30, 2000 were $259.9 million.  The Company has
      additional  unused,  unsecured lines of credit available  which,  together
      with the lines of credit under the Facilities,  aggregated  $318.8 million
      at September 30, 2000.


                                       7


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

Results of Operations

Third Quarter 2000 Compared to Third Quarter 1999

      Consolidated  worldwide  revenues from commission and fee income increased
20% in the third  quarter  of 2000 to  $1,452.5  million  compared  to  $1,210.9
million in the third quarter of 1999.  Consolidated  domestic revenues increased
27.4% in the third quarter of 2000 to $775.7 million  compared to $608.7 million
in the third  quarter of 1999.  Consolidated  international  revenues  increased
12.4% in the third quarter of 2000 to $676.8 million  compared to $602.2 million
in the third quarter of 1999. The effect of  acquisitions,  net of divestitures,
increased  worldwide revenues by 10.0% and changes in the foreign exchange value
of the U.S.  dollar  decreased  worldwide  revenues by 7.3%. The remaining 17.3%
increase in  consolidated  worldwide  revenues was due to the growth of existing
businesses.

      Worldwide  operating expenses,  including net interest expense,  increased
19.8% in the third  quarter of 2000 to  $1,293.8  million  compared  to $1,079.6
million in the third quarter of 1999 primarily as a result of increased salaries
and client services  expenditures  in support of an increased  revenue base. The
effect of  acquisitions,  net of  divestitures,  increased  worldwide  operating
expenses by 8.8% and changes in the foreign  exchange  value of the U.S.  dollar
decreased worldwide operating expenses by 7.0%.

      Net  interest  expense  increased  in the third  quarter  of 2000 to $23.5
million as compared to $15.9 million in the same period in 1999.  This reflected
higher  average  interest  rates  during  the period  and  increased  borrowings
primarily as a result of acquisitions and share repurchases.

      Pretax  profit  margin  improved to 10.9% in the third  quarter of 2000 as
compared  to 10.8% in the  same  period  in 1999  and  operating  margin,  which
excludes net interest  expense,  improved to 12.5 % in the third quarter of 2000
as compared to 12.2% in the same period in 1999.

      The  effective  income tax rate was 40.7% in the third  quarter of 2000 as
compared to 41.0% in the third quarter of 1999. This decrease is due principally
to lower effective tax rates at the Company's international subsidiaries.

      Equity in  affiliates  increased to $3.1 million from $(.2) million in the
third quarter of 1999. This increase is primarily the result of acquisitions and
higher earnings of existing affiliates in which the Company owns less than a 50%
equity interest.

      Minority  interest  expense  increased  to $11.6  million from $6.9 in the
third  quarter of 1999.  This  increase is  primarily  due to  acquisitions  and
greater earnings by subsidiaries where minority interests exist.


                                       8


      Net income increased 21.9% to $85.7 million and diluted earnings per share
increased  23.1% to $0.48 in the  third  quarter  of 2000 as  compared  to $70.3
million and $0.39 per share, respectively, in the same period in the prior year.

Nine Months 2000 Compared to Nine Months 1999

      Consolidated  worldwide  revenues from commission and fee income increased
20.0% in the first nine months of 2000 to $4,351.8  million compared to $3,628.1
million  in the  first  nine  months  of 1999.  Consolidated  domestic  revenues
increased 25.5% in the first nine months of 2000 to $2,298.4 million compared to
$1,832.1 million in the same period in 1999. Consolidated international revenues
increased 14.3% in the first nine months of 2000 to $2,053.4 million compared to
$1,796.0 million in the same period in 1999. The effect of acquisitions,  net of
divestitures,  increased  worldwide  revenues by 8.5% and changes in the foreign
exchange  value of the U.S.  dollar  decreased  worldwide  revenue by 4.8%.  The
remaining  16.3%  increase in  consolidated  worldwide  revenues  was due to the
growth of existing businesses.

      Worldwide  operating expenses,  including net interest expense,  increased
19.8% in the first nine months of 2000 to $3,803.0  million compared to $3,174.9
million  in the first nine  months of 1999  primarily  as a result of  increased
salaries and client  services  expenditures  in support of an increased  revenue
base.  The effect of  acquisitions,  net of  divestitures,  increased  worldwide
operating expenses by 8.1% and changes in the foreign exchange value of the U.S.
dollar decreased worldwide operating expenses by 4.8%.

      Net interest  expense  increased to $50.9 million in the first nine months
of 2000  compared  to $39.0  million in the same period in 1999.  This  increase
reflects higher interest rates and higher average borrowings as a result of both
acquisitions and share repurchases during the period.

      Excluding  the gain on sale of  Razorfish  shares,  pretax  profit  margin
improved  to 12.6% for the first nine months of 2000 as compared to 12.5% in the
same period in 1999.  Operating margin, which excludes net interest expense, was
13.8% for the first nine  months of 2000 as compared to 13.6% in the same period
in 1999.

      The effective  income tax rate was 40.9% for the first nine months of 2000
as  compared  to 40.8% for the same  period  in 1999.  This  increase  primarily
reflects the impact of the gain on sale of Razorfish  shares which resulted in a
higher marginal tax rate.

      Equity in  affiliates  increased  to $6.6 million from $3.6 million in the
nine months of 1999. This increase is primarily the result of  acquisitions  and
higher earnings of existing affiliates in which the Company owns less than a 50%
equity interest.


                                       9


      Minority interest expense increased to $39.5 million from $28.9 million in
the nine months of 1999.  This  increase is primarily  due to  acquisitions  and
greater earnings by subsidiaries where minority interests exist.

      Including the gain on sale of Razorfish shares, net income increased 46.8%
to $356.6 million in the first nine months of 2000 as compared to $243.0 million
in the same period in 1999.  Excluding this gain, net income  increased 20.5% to
$292.8  million in the first nine months of 2000  compared to the same period in
1999 and diluted  earnings per share (EPS) increased 20.0% to $1.62 in the first
nine months of 2000 from $1.35 for the same period in 1999.

Capital Resources and Liquidity

      Cash and cash  equivalents  at  September  30,  2000  decreased  to $435.0
million  from $576.4  million at December  31, 1999.  The  relationship  between
payables to the media and suppliers and receivables  from clients,  at September
30, 2000, is consistent with industry norms.

      The  Company  maintains  relationships  with a number of banks  worldwide,
which have extended unsecured committed lines of credit in amounts sufficient to
meet the Company's  cash needs.  At September 30, 2000, the Company had $1,997.8
million in such unsecured  committed lines of credit of which $318.8 million was
available.

      The Company has a $1 billion  revolving credit facility (the  "Facility"),
which allows for the issuance of $1 billion of  commercial  paper.  The Facility
allows the Company to convert all amounts  outstanding at  expiration,  on April
26, 2001, into a one-year term loan. In addition to the Facility the Company has
a $500 million  revolving credit facility  available,  which also allows for the
issuance of commercial paper, and expires on June 30, 2003.

      During  the fourth  quarter  2000,  the  Company  increased  the amount of
securities registered under shelf registration statements ("shelf filings") with
the Securities  Exchange  Commission (SEC) from approximately $329 million to $1
billion.  The  shelf  filings  provide  for  the  issuance  of  debt  or  equity
securities, from time to time.

      In the  fourth  quarter  of 2000 the  Company  intends  to call its 4 1/4%
Convertible  Subordinated  Debentures.  The amount  outstanding at September 30,
2000 was approximately $218 million.  The Company expects that the entire amount
will be redeemed  through the issuance of  approximately  6.9 million  shares of
common stock.  These shares have been included in the computation of diluted EPS
for all periods presented in the accompanying financial statements.

      Management  believes the  Company's  ability to access the public  capital
markets,  the  aggregate  lines of  credit  available  to it and cash  flow from
operations  provide the Company with  sufficient  liquidity  and are adequate to
support foreseeable operating requirements.


                                       10


ITEM  3. QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT
         MARKET RISK

Market Risk

      The Company's  market risks consist  primarily of the impact of changes in
currency exchange rates on assets and liabilities of non-U.S. operations and the
impact of changes in interest rates on debt.

      The Company's  1999 Form 10-K  provides a more detailed  discussion of the
market risks  affecting  its  operations.  As of September 30, 2000, no material
change had occurred in the Company's market risks, as compared to the disclosure
in its Form 10-K for the year ending December 31, 1999.

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. 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 the Company's  current plans or expectations and are subject to a number of
uncertainties  and risks  that  could  significantly  affect  current  plans and
anticipated  actions and the Company's future  financial  condition and results.
The  uncertainties  and risks include,  but are not limited to, general economic
and business  conditions;  loss of significant  customers;  changes in levels of
client  advertising;  the impact of  competition;  risks relating to acquisition
activities; and the complexity of integrated computer systems. 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 or on
behalf of the Company.


                                       11


                       OMNICOM GROUP INC. AND SUBSIDIARIES

PART II. OTHER INFORMATION


Item 6. Exhibit and Reports on Form 8-K

(a) Exhibits

Exhibit Number       Description of Exhibit
- --------------       ----------------------

    27.              Financial Data Schedule (filed in electronic format only)

(b) Reports on Form 8-K

No reports on Form 8-K were filed during the third quarter of 2000.


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                                   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.
                                                   (Registrant)
                                               ------------------


Date November 14, 2000                         /s/ Randall J. Weisenburger
                                               ---------------------------------
                                                   Randall J. Weisenburger
                                                   Executive Vice President
                                                   and Chief Financial Officer
                                                   (Principal Financial Officer)


Date November 14, 2000                         /s/ Philip J. Angelastro
                                               ---------------------------------
                                                   Philip J. Angelastro
                                                   Controller
                                                   (Chief Accounting Officer)


                                       13