UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                    FORM 8-K

                                 CURRENT REPORT
     Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

                Date of Report (Date of earliest event reported):
                                  June 23, 2006

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

           New York                    No. 001-10551         No. 13-1514814
           --------                    -------------         --------------
 (State or other jurisdiction           (Commission           (IRS Employer
       of incorporation)               File Number)        Identification No.)


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


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

                                 Not Applicable
--------------------------------------------------------------------------------
          (Former name or former address, if changed since last report)


Check  the  appropriate  box  below  if the  Form  8-K  filing  is  intended  to
simultaneously  satisfy the filing obligation of the registrant under any of the
following provisions (see General Instruction A.2. below):

[ ] Written communications pursuant to Rule 425 under the Securities Act (17 CFR
230.425)

[ ] Soliciting  material  pursuant to Rule 14a-12 under the Exchange Act (17 CFR
240.14a-12)

[ ] Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange
Act (17 CFR 240.14d-2(b))

[ ] Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange
Act (17 CFR 240.13e-4(c))



Item 1.01  Entry into a Material Definitive Agreement.

      On June 23, 2006,  Omnicom Group Inc. (the "Company") and its wholly owned
subsidiaries  Omnicom Finance Inc., Omnicom Capital Inc. and Omnicom Finance plc
(the "Borrowers"  and,  together with the Company,  the "Loan Parties")  entered
into an Amended and Restated Five Year Credit Agreement (the "Credit Agreement")
with the lenders named therein (the  "Lenders"),  Citigroup  Global Markets Inc.
and J.P. Morgan  Securities Inc., as lead arrangers and book managers,  ABN AMRO
Bank N.V., as syndication agent, JPMorgan Chase Bank, N.A., HSBC USA, N.A., Bank
of America,  N.A.  and Banco  Bilbao  Vizcaya  Argentaria  SA, as  documentation
agents,  and  Citibank,  N.A.  as  administrative  agent (the  "Agent")  for the
Lenders.  The Credit  Agreement has a maturity date of June 23, 2011.  Under the
Credit  Agreement,  the Lenders  committed  to provide  advances  and letters of
credit  in an  aggregate  amount  of  up  to  $2,400,000,000.  Interest  on  the
borrowings  under the Credit Agreement is payable at a base rate or Eurocurrency
rate, in either case plus an applicable  margin and fees.  Borrowings  under the
Credit Agreement may be used for general corporate purposes of the Borrowers and
their subsidiaries,  including as commercial paper liquidity support and to fund
acquisitions not prohibited under the Credit Agreement.

      The terms of the Credit Agreement include  representations and warranties,
affirmative and negative covenants  (including certain financial  covenants) and
events of default that are customary for credit facilities of this nature.  Upon
the occurrence,  and during the continuance,  of an event of default,  including
but not  limited to  nonpayment  of  principal  when due,  failure to perform or
observe certain terms,  covenants or agreements under the Credit Agreement,  and
certain defaults of other  indebtedness,  the Agent may terminate the obligation
of the Lenders under the Credit  Agreement to make advances and issue letters of
credit and  declare  any  outstanding  obligations  under the  Credit  Agreement
immediately  due and payable.  In addition,  in the event of an actual or deemed
entry of an order for relief  with  respect to any Loan Party  under the Federal
Bankruptcy  Code,  the  obligation  of each  Lender to make  advances  and issue
letters of credit shall automatically  terminate and any outstanding obligations
under the Credit Agreement shall immediately become due and payable.  Subject to
the terms and conditions of the Credit  Agreement,  the Company may request that
the Lenders' commitments under the Credit Agreement be increased,  provided that
in no event may the  aggregate  amount  of the  Lenders'  commitments  under the
Credit Agreement at any time exceed $2,650,000,000.

      The obligations of the Borrowers under the Credit Agreement are guaranteed
by the Company.

      The foregoing description of the Credit Agreement does not purport to be a
complete  statement  of the  parties'  rights and  obligations  under the Credit
Agreement  and  the  transactions  contemplated  by the  Credit  Agreement.  The
foregoing  description  of the Credit  Agreement is qualified in its entirety by
reference to the Credit Agreement, a copy of which is attached hereto as Exhibit
10.1 and is incorporated herein by reference.


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Item 2.03 Creation of a Direct  Financial  Obligation or an Obligation  under an
Off-Balance Sheet Arrangement of Registrant

      The  information  included  above  under Item 1.01,  Entry into a Material
Definitive Agreement, is incorporated herein by reference.


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Item 9.01  Financial Statements and Exhibits.

      (d) Exhibits.

      The following exhibit is filed as part of this Current Report on Form 8-K:

      10.1         Amended and Restated Five Year Credit Agreement (the
                   "Agreement"), dated as of June 23, 2006, by and among Omnicom
                   Finance Inc., a Delaware corporation, Omnicom Capital Inc., a
                   Connecticut corporation, Omnicom Finance plc, a corporation
                   organized under the laws of England and Wales, Omnicom Group
                   Inc., a New York corporation, the banks, financial
                   institutions and other institutional lenders and initial
                   issuing banks listed on the signature pages of the Agreement,
                   Citigroup Global Markets Inc. and J.P. Morgan Securities
                   Inc., as lead arrangers and book managers, ABN AMRO Bank
                   N.V., as syndication agent, JPMorgan Chase Bank, N.A., HSBC
                   Bank USA, N.A., Bank of America, N.A. and Banco Bilbao
                   Vizcaya Argentaria SA, as documentation agents, and Citibank,
                   N.A., as administrative agent for the lenders.


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                                    SIGNATURE

      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 hereunto duly authorized.

                                       OMNICOM GROUP INC.


Date:  June 29, 2006                   By: /s/ Michael J. O'Brien
                                           -------------------------------------
                                           Name:  Michael J. O'Brien
                                           Title: Senior Vice President, General
                                                  Counsel and Secretary


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                                  EXHIBIT INDEX

Exhibit No.        Exhibit

      10.1         Amended and Restated Five Year Credit Agreement (the
                   "Agreement"), dated as of June 23, 2006, by and among Omnicom
                   Finance Inc., a Delaware corporation, Omnicom Capital Inc., a
                   Connecticut corporation, Omnicom Finance plc, a corporation
                   organized under the laws of England and Wales, Omnicom Group
                   Inc., a New York corporation, the banks, financial
                   institutions and other institutional lenders and initial
                   issuing banks listed on the signature pages of the Agreement,
                   Citigroup Global Markets Inc. and J.P. Morgan Securities
                   Inc., as lead arrangers and book managers, ABN AMRO Bank
                   N.V., as syndication agent, JPMorgan Chase Bank, N.A., HSBC
                   Bank USA, N.A., Bank of America, N.A. and Banco Bilbao
                   Vizcaya Argentaria SA, as documentation agents, and Citibank,
                   N.A., as administrative agent for the lenders.


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