August 2, 2006

Securities and Exchange Commission
Division of Corporation Finance
100 F Street, NE
Washington, DC 20549
Attn:  Mr. Larry Spirgel, Assistant Director

             Re:      Omnicom Group Inc. ("Omnicom")
                      Annual Report on Form 10-K for the fiscal year ended
                      December 31, 2005 Filed February 24, 2006, and
                      Quarterly Report on Form 10-Q for the quarter ended
                      March 31, 2006
                      Filed May 2, 2006,
                      File No. 001-10551
                      ----------------------------------------------------------

Ladies and Gentlemen:

      This letter responds to the Staff's July 24, 2006 comment letter relating
to Omnicom's Annual Report on Form 10-K for the fiscal year ended December 31,
2005 and Omnicom's Quarterly Report on Form 10-Q for the quarter ended March 31,
2006. Responses are numbered to correspond to those in the comment letter. For
your convenience, the comments are repeated below. All references to "Omnicom,"
"we", "us" and "our" refer to Omnicom Group Inc. and its consolidated
subsidiaries.

                 Form 10-K for the year ended December 31, 2005

Note 1 Summary of Significant Accounting Policies, page F-8

1.    We note on page 11 that you generate revenues from traditional media
      advertising, customer relationship management, public relations and
      specialty communications. Tell us in more detail your revenue recognition
      policy for each of the sources of revenues described on page 11. Also,
      tell us how each source of revenue relates to your description in the
      fourth sentence of your revenue recognition accounting policy footnote.

      Substantially all of our revenue is derived from fees for services and
      revenue is realized when the service is performed in accordance with the
      terms of each client arrangement and upon completion of the earnings
      process. These principles are the foundation of our revenue recognition
      policy and apply to all client arrangements in each of our service
      disciplines - traditional media advertising, customer relationship
      management, public relations and specialty communications. We have
      summarized additional details regarding the application of our revenue
      recognition policy to these service disciplines below.



Securities and Exchange Commission
August 2, 2006
Page 2

      Background

      Our business is driven by clients' continuous demand for more effective
      and efficient communications activities, and 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. In an effort to monitor the changing
      needs of our clients, to further expand the scope of our services to key
      clients, and to analyze the success of our agencies in providing a broad
      range of our services, we group revenue into four categories: traditional
      media advertising, customer relationship management, public relations and
      specialty communications.

      Although the medium used to reach a given client's target audience may be
      different across each of these disciplines, the marketing message is
      developed in the same way -- through the use of the intellectual capital
      of our people -- and it is delivered to clients in the same way -- by
      providing professional consulting services. The skill-sets of our people
      across these disciplines are similar. Common to all of the disciplines is
      the ability to understand a client's brand and its selling proposition,
      and the ability to develop a unique message to communicate the value of
      the brand to the client's target audience. For providing these
      consulting services, substantially all of our agencies contract with our
      clients on a fee-for-service / rate-per-hour, or equivalent basis that is
      well understood across agencies and regions.

      Application of our Revenue Recognition Policy

      Revenue is recognized by each of our agencies through the application of
      our overall revenue recognition policies. The basic principles of our
      revenue recognition policies are to realize revenue when the service is
      performed in accordance with the terms of each client arrangement and upon
      completion of the earnings process. Our revenue recognition policies are
      in compliance with Staff Accounting Bulletin ("SAB") 101 "Revenue
      Recognition in Financial Statements" ("SAB 101"), as updated by SAB 104
      "Revenue Recognition" ("SAB 104").

      More specifically, our policy requires the following key elements to be
      satisfied prior to recognizing revenue:

            o     Persuasive evidence of an arrangement must exist;

            o     The sales price must be fixed or determinable;

            o     Delivery, performance and acceptance in accordance with the
                  client arrangement; and

            o     Collection is reasonably assured.

      Because the services that we provide across each of our disciplines are
      similar and delivered to clients in similar ways - through the
      consultative services of our people - all of the key elements set forth
      above apply equally to client arrangements in each of our four
      disciplines.

      Also tell us how each source of revenue relates to the description in the
      fourth sentence of your revenue recognition accounting policy footnote.

      The fourth sentence of our revenue recognition accounting policy footnote
      states "This includes when services are rendered, generally upon
      presentation date for media, when costs are incurred



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August 2, 2006
Page 3

      for radio and television production and when print production is completed
      and collection is reasonably assured."

      As we previously stated, substantially all revenue is derived from fees
      for services. Additionally, a declining portion of our revenue is earned
      from commissions based upon the placement of advertisements in various
      media. More specifically:

            (A)   When services are rendered (in accordance with the client
                  arrangement).

                  This applies to all of our disciplines - the substantial
                  portion of our revenue is derived from fees for services.

            (B)   Upon presentation date for media (in accordance with the
                  client arrangement).

                  This applies to our traditional media advertising businesses
                  which at times earn commissions based upon the placement of
                  advertisements in various media. The commissions are generally
                  derived as a percentage of the cost of the media. In these
                  cases, when the media runs (e.g., the television commercial is
                  aired), the earnings process is complete.

            (C)   When costs are incurred for radio and television production
                  and when print production is completed.

                  This relates to both our traditional media communications and
                  specialty advertising businesses. It should be noted that in
                  the past, industry practice provided that agencies were
                  compensated for their professional services through
                  commissions based upon the production costs of radio,
                  television and print advertisements / commercials (even though
                  production efforts are typically performed by third-parties).
                  The commissions were generally derived as a percentage of the
                  cost of producing the advertisements / commercials. When this
                  is the case (which is infrequent today), the commissions were
                  earned according to the client arrangements are the production
                  costs are incurred, or completed.

                  Although our traditional media advertising and specialty
                  communications businesses currently may perform services
                  related to supervising the development of advertisements /
                  commercials, client arrangements typically provide for fees
                  for these services (as opposed to commissions). Additionally,
                  the actual production of the advertisements / commercials is
                  performed by third-party production companies and is typically
                  a pass-through cost for our agencies.

      Conclusion

      Our revenue recognition policy is based on the principles described above
      and is in compliance with SAB 104. Because the services that our agencies
      provide to our clients are similar, these principles are applied
      consistently across our four service disciplines. The foregoing
      description sets forth a more detailed description of our revenue
      recognition policy, and in light of the Staff's comment, we will consider
      our responses to the Staff's comment when preparing our revenue
      recognition accounting policy disclosures in our upcoming 2006 Form 10-K.



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August 2, 2006
Page 4

Note 4 Long-Term Debt and Convertible Notes, page F-15

2.    We note the following provisions in connection with the issuances of the
      Convertible Notes: (1) the right of the note holders to convert the notes
      into shares of your common stock; (2) the note holders' right to put the
      notes back to you for cash in February of each year; (3) your agreement
      not to redeem the notes for cash before February 7, 2009; and (4) your
      possible requirement to pay contingent cash interest. Tell us how you
      accounted for each embedded instrument described above under SFAS 133.
      Tell us how you considered EITF 00-19 in concluding that you did not need
      to bifurcate the conversion option from the host contract. Also tell us
      how you considered EITF 98-5 and EITF 00-27 in your accounting. With
      regard to the put option, tell us how considered paragraphs 13 and 61(d)
      of SFAS 133 and DIG B-16 in your accounting.

      In accounting for our convertible notes, including the embedded
      instruments described above, we considered the provisions of SFAS 133
      (including paragraphs 13 and 61(d)), as well as DIG B-16 and the EITF
      issues referred to above. We believe that our accounting for our
      convertible notes complies with the provisions of this accounting
      literature.

      Background

      In 2001, we issued $850.0 million zero coupon zero yield convertible notes
      (the "2031 Notes"). In 2002, we issued $900.0 million zero coupon zero
      yield convertible notes (the "2032 Notes"). And, in 2003, we issued $600.0
      million zero coupon zero yield convertible notes (the "2033 Notes"),
      collectively the "Notes". All of the Notes were issued at 100% of the
      principal amount (no discount) and do not have a coupon. The Notes are
      convertible into shares of our common stock at conversion rates specified
      in each of the applicable indentures. The Notes provide the holders with
      the option to require us to repurchase the Notes (put rights) on dates
      specified in the indentures (put dates). The 2031 Notes and 2032 Notes
      have annual put dates and the 2033 Notes have put dates, generally every
      24 or 36 months until 2013. Separately, the Notes provide us with the
      right to redeem the Notes for cash (call right) at any time after dates
      specified in the indentures (call dates). Finally, the Notes provide for a
      predetermined cash interest payment to be made, subject to the average
      market price of our stock during periods specified in the indenture.

      (1)   the right of the note holders to convert the notes into shares of
            your common stock

      The conversion right is not required to be bifurcated and separately
      accounted for. As discussed below, we considered the requirements of SFAS
      133 and we applied EITF 00-19 (paragraphs 12-32) to reach this conclusion.
      We also determined that EITF 98-5 and EITF 00-27 did not change our
      conclusion. We will disclose in our Annual Report on Form 10-K for the
      year ending December 31, 2006 that the conversion right embedded in our
      Notes is not accounted for apart from the Notes.

      Background

      The principal or par value of each Note is $1,000.00. Upon conversion the
      value of each Note can be determined by multiplying the closing share
      price of Omnicom's common stock by the specified, fixed number of shares
      of common stock per note required under the indenture to be issued upon
      conversion (the conversion value) as follows:



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August 2, 2006
Page 5

            2031 Notes - 9.09 shares per note (implying a conversion price of
            $110.01)
            2032 Notes - 9.09 shares per note (implying a conversion price of
            $110.01)
            2033 Notes - 9.71 shares per note (implying a conversion price of
            $103.00)

      The conversion value will be settled by paying the principal ($1,000.00
      par value) in cash and at our option either paying cash or issuing shares
      or a combination of both equal to the remaining accreted value.

      The conversion right is not separable from the Notes and contains standard
      anti-dilution provisions. If the price of our shares does not exceed
      certain thresholds (that are above the implied conversion price above),
      the conversion option cannot be exercised. Notwithstanding this
      requirement, the Notes can be converted if we effect certain extraordinary
      transactions; or if our long-term debt ratings are downgraded to specified
      levels. Although these events could lead to conversion, they would not
      require prepayment of the principal of the Notes.

      Accounting for the Conversion Right under SFAS 133, as amended and EITF
      00-19 (including our consideration of EITF 98-5 and EITF 00-27)

      SFAS 133 (par.11(a) and 12(c)) provides that an embedded derivative
      indexed to a company's own stock that would be classified in shareholder's
      equity if it was a freestanding derivative, is not considered a derivative
      for purposes of the SFAS 133. Therefore, it is not required to be
      accounted for separately from the debt host.

      EITF 00-19 provides the criteria to determine if a freestanding derivative
      indexed to a company's own stock should be classified in shareholder's
      equity upon settlement. Accordingly, we considered EITF 00-19 in
      determining the accounting for the embedded conversion right described
      above and the related requirements to bifurcate the Notes and the embedded
      option to convert the Notes to our shares and account for each separately.

      We concluded that because, upon conversion, the principal was required to
      be settled in cash and only the remaining accreted value could at our
      option be settled in our shares that the Notes were not conventional
      convertible debt, as described in EITF 00-19 and the provisions of APB 14
      "Accounting for Convertible Debt and Debt Issued with Stock Purchase
      Warrants," do not apply. We therefore had to meet the requirements of
      paragraphs 12 through 32 of EITF 00-19 with respect to the portion of the
      conversion right that could be settled in our shares. As set forth below,
      we met all of the applicable EITF 00-19 requirements and we concluded that
      the conversion right did not have to be bifurcated from the debt host (the
      Notes) and accounted for separately.

      A summary of the results of our EITF 00-19, paragraph 12 through 32
      analysis follows:

            The contract permits the company to settle in unregistered shares
            (Paragraphs 12 to 18).

      Yes. There is no requirement that the shares of Omnicom's common stock be
      delivered upon conversion of the Notes be registered. While each of the
      indentures provide that Omnicom will "endeavor promptly" to deliver
      registered shares, there are no specific remedies available to the note
      holders if the shares are not registered.



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August 2, 2006
Page 6

      Notwithstanding the forgoing, upon issuance of the Notes, Omnicom entered
      into a Registration Rights Agreements that required Omnicom to use its
      reasonable efforts to have an effective shelf registration statement,
      covering resales of the Notes and any shares of common stock issued upon
      conversion of the Notes. The registration statement only needed to be
      effective for at most two years after each such issuance of the Notes.
      While the Registration Rights Agreements required Omnicom to have an
      effective shelf registration statement, if Omnicom failed to have an
      effective registration statement, note holders were entitled to liquidated
      damages that were limited to 0.25% per year for the first 90 days and
      0.50% thereafter of the principal value or conversion value of the notes,
      as applicable, until the registration statement was effective. The
      Registration Rights Agreements did not provide the note holders any right
      to a net cash settlement as a remedy for failure to register the
      securities. Although we no longer have any obligation to register any of
      the Notes or shares of common stock underlying the Notes, we have
      unilaterally opted to maintain effective registration statements to enable
      the note holders to publicly resell their Notes and/or shares of common
      stock. We will not be subject to any penalties or other remedies if we
      later decide to terminate the effectiveness of any registration statement
      relating to the Notes.

            The Company has sufficient authorized and unissued shares available
            to settle the contract after considering all other commitments that
            may require the issuance of stock during the maximum period the
            derivative contract could remain outstanding (Paragraph 19).

      Yes. Upon issuance and at December 31, 2005 and March 31, 2006, Omnicom
      had one billion shares of common stock authorized for issuance. We have
      approximately 800 million unissued shares or, approximately 4.5 times the
      number of shares outstanding at February 15, 2006. Assuming the maximum
      number of shares under the conversion rights of the Notes was issued (21.7
      million shares) and including all employee stock programs, Omnicom would
      need less than 40.0 million of unissued shares to fulfill all of its
      outstanding commitments under the Notes and employee stock programs to
      deliver shares as of December 31, 2005 and March 31, 2006. Prior to these
      dates, these amounts were not significantly different.

            The contract contains an explicit limit on the number of shares to
            be delivered in a share settlement (Paragraphs 20 to 24).

      Yes. Each Note is convertible into a fixed number of shares as described
      above. Therefore, a decrease in our share price would not result in an
      increase in the required number of shares to be delivered.

            There are no required cash payments to the counterparty in the event
            the company fails to make timely filings with the SEC (Paragraph
            25).

      No. There are no specific remedies available that require cash payments,
      or allow for net cash settlement in the event Omnicom fails to make timely
      filings with the SEC.

            There are no required cash payments to the counterparty if the
            shares initially delivered upon settlement are subsequently sold by
            the counterparty and the sales proceeds are insufficient to provide
            the counterparty with full return of the amount due (that is, there
            are no cash settle "top-off" or "make-whole" provisions) (Paragraph
            26).



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August 2, 2006
Page 7

      No. There are no such provisions or any other "make-whole" or "top-off"
      remedies available to note holders before or after conversion.

            The contract requires net cash settlement only in specific
            circumstances in which holders of shares underlying the contract
            also would receive cash in exchange for their shares (Paragraphs 27
            and 28).

      No. There are no net cash settlement requirements with respect to the
      shares issued upon conversion.

            There are no provisions in the contract that indicate that the
            counterparty has rights that rank higher than those of a shareholder
            of the stock underlying the contract (Paragraphs 29 to 31).

      No. There are no such provisions. Additionally, the shares to be delivered
      are shares of Omnicom common stock with no special rights attached.

            There is no requirement in the contract to post collateral at any
            point or for any reason (Paragraph 32).

      There are no collateral requirements whatsoever.

      In summary, our analysis of the foregoing criteria in paragraphs 12-32 of
      EITF 00-19 indicated that the embedded conversion option qualifies for the
      scope exception in paragraph 11(a) of SFAS 133 and did not have to be
      bifurcated from the Notes and accounted for separately.

      Additionally, we reviewed EITF 98-5 and EITF 00-27, and concluded that
      nothing therein would change our accounting conclusions described above.
      EITF 98-5 defines a beneficial conversion feature on convertible debt as
      "a nondetachable conversion feature that is in-the-money at the commitment
      date." In all cases, the Notes were issued with the implied conversion
      price substantially in excess of the market value of our common stock on
      the commitment date. Therefore, since the conversion features of the Notes
      are out-of-the-money, there is no beneficial conversion feature under EITF
      98-5 and EITF 00-27.

      (2)   the note holders' right to put the notes back to you for cash, and
      (3)   your agreement not to redeem the notes for cash

      The put and call rights are not required to be bifurcated and accounted
      for separately, primarily because the notes were issued at par, as
      discussed below.



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August 2, 2006
Page 8

      Background

      The holders of the Notes have a right to require Omnicom to repurchase the
      Notes for cash (put right) on specified dates at their principal value.
      The principal value is the face value as the Notes were issued at par. The
      put dates are as follows:

            2031 Notes - annually, each February 7
            2032 Notes - annually, each July 31
            2033 Notes - June 15, 2006, 2008, 2010, 2013, 2018, 2023 and
            annually, each June 15 thereafter.

      There are no other conditions required for a put right to be executed or
      that can accelerate the put dates, except that upon a change of control
      the holders of the Notes also had or have the right to require Omnicom to
      purchase their Notes at their principal value on or before the dates
      listed below.

            2031 Notes - February 7, 2006
            2032 Notes - July 31, 2007
            2033 Notes - June 15, 2010

         Separately, Omnicom has the right to redeem the Notes for cash (call
         right) at par as follows:

            2031 Notes - at anytime on or after February 7, 2007
            2032 Notes - at anytime on or after July 31, 2009
            2033 Notes - at anytime on or after June 15, 2010

         And, at the accreted value as follows:

            2031 Notes - at anytime on or after February 7, 2021
            2032 Notes - at anytime on or after July 31, 2022
            2033 Notes - at anytime on or after June 15, 2023

      There are no other conditions required for a call right to be executed or
      that can accelerate the call dates.

      Accounting analysis under SFAS 133, as amended, including paragraphs 13
      and 61(d), and DIG B-16

      SFAS 133 does not require put and call options that are clearly and
      closely related to the host contract to be bifurcated from the host
      contract and accounted for separately. Paragraph 61(d) of SFAS 133
      indicates that call and put options in debt that require the prepayment of
      principal are considered to be clearly and closely related to a debt
      instrument unless both (1) the debt involves a substantial premium or
      discount and (2) the put or call option is only contingently exercisable.
      Because the notes were issued at par and there are no contingencies
      regarding the put and call, paragraph 61(d) and/or paragraph 13 do not
      apply to the Notes.

      Similarly, applying Implementation Issue No. B16 - Calls and Puts in Debt
      Instruments ("DIG B-16"), the put and call rights are not required to be
      bifurcated and separately accounted for. In DIG B-16, the FASB Staff
      concluded that certain debt instruments that are issued at a substantial
      discount and contingently pre-payable may not have prepayment options that
      must be bifurcated if the option does not accelerate the maturity value of
      the debt, but requires the repayment of the accreted value of the debt.

      The FASB Staff gives the example in Issue No. B-16 (number 6) where zero
      coupon debt is issued at a substantial discount and is callable in the
      event of a change in control. In this example, if the debt is called, the
      issuer pays the accreted value (calculated per an amortization table based
      on the effective yield method). In this instance, the payoff on exercise
      is not indexed to the value of an extraneous index or price, but the debt
      was issued at a significant discount and the option was



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Page 9

      contingently exercisable. Even though these two conditions were present,
      the FASB Staff concluded that the call option was clearly and closely
      related to the debt host contract. The rationale was that the call option
      did not accelerate the repayment of the principal value at maturity
      because the debt was callable at the accreted value.

      The put and the call rights in the Notes do not have to be bifurcated
      because the put and call rights are clearly and closely related to the
      debt host. Additionally, they do not accelerate the repayment of a
      principal value that is greater than the par, or then accreted principal
      value.

      (4)   your possible requirement to pay contingent cash interest.

      The contingent cash interest right is a derivative under SFAS 133 that is
      required to be bifurcated from the debt host, valued and accounted for
      separately. We considered the value of the contingent cash interest right
      at the time of each issuance of the Notes and concluded that it had no
      value. We routinely update our initial conclusion that the contingent cash
      interest right is inconsequential to the accounting for the Notes and, as
      described below, have concluded that this presently remains the case.

      Background

      The Notes provide for a predetermined cash interest payment to be made
      semiannually, beginning in 2006, 2007 and 2010, for the 2031, 2032 and
      2033 Notes, respectively, if the average market price of Omnicom's stock
      is at least 120% of the issue price of the Notes during the applicable
      periods. Based on the conversion ratios of our Notes a contingent cash
      interest payment would have to be made if the price of a share of Omnicom
      stock (during the applicable periods), for each of the respective Notes,
      is equal to, or in excess of the following amounts:

            2031 Notes - $132.01
            2032 Notes - $132.01
            2033 Notes - $123.60

      At the time of each issuance of the 2031, 2032 and 2033 Notes, our stock
      price was $88.00, $94.00 and $70.00, respectively, and during the period
      since the issuance of the Notes our stock price has been between $38.00
      and $96.00.

      The predetermined cash interest amount is defined in the indenture and is
      approximately 1.0% per year in the initial year it becomes payable,
      increasing by 4.0% per year resulting in just over approximately 3.0% at
      the end of the 30 year period the Notes are outstanding.

      Accounting for the contingent cash interest right under SFAS 133, as
      amended

      The contingent cash interest right is a derivative because it is not
      clearly and closely related to the underlying debt host contract. Rather,
      it is triggered by the market price of the Notes or Omnicom's stock price
      and based on predetermined amounts and thus it is not interest-rate
      related. By bifurcating the fair value of these derivatives from the Notes
      at the inception of the transaction, a debt discount will be created. The
      fair value of the derivative would be marked to market through the P&L in
      each quarterly reporting period.



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Page 10

      The combined value of the contingent interest derivative on all of our
      Notes was determined to be between a low of zero and a high of $175,000.00
      (at quarter-end dates) subsequent to the date of issuance and March 31,
      2006. The amounts are low by design as the purpose of the contingent
      interest right was to provide value to both the issuer and the Note
      holder.

      Contributing to the low value is Omnicom's call right. The call right
      diminishes the value inherent to the Note holder because, as described
      above, Omnicom's call right begins in 2009 and 2010. The contingent cash
      interest right begins in 2006 - 2010. As a result of Omnicom's call
      rights, the contingent cash interest payments are firmly in the control of
      Omnicom after three years and thus, a low probability of payment is
      assumed by the Note holder for all years after year three. Additionally,
      Omnicom's stock price during the period since the issuance of the Notes,
      relative to the hurdle price at which the contingent cash interest becomes
      payable, as described above, further lowers the value of the contingent
      cash interest right, by lowering the probability of any payment in the
      near term.

      Conclusion

      We believe our accounting for the Notes complies with the provisions of
      SFAS 133 and EITF 00-19. Additionally, with regard to the put and call
      options, we believe our accounting is consistent with the requirements of
      paragraphs 13 and 61(d) of SFAS 133 and DIG B-16 and the put and call
      rights in the Notes are not required to be bifurcated. We will consider
      our responses to the Staff's comments when preparing our disclosures in
      our upcoming filings and as required, we will continue to monitor the
      value of the contingent cash interest derivative.



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Page 11

3.    We note that you made a payment of $33.5 million in August 2005 to holders
      of your 2032 Notes to not exercise certain put rights and, in November
      2004, you paid $14.8 million and $1.5 million in the aggregate,
      respectively, to consent to certain amendments to your indentures and not
      to exercise certain put rights. In this regard, it is unclear to us why
      amortization of these payments under GAAP is appropriate. Please revise or
      advise in detail in addressing the relevant accounting literature. Also,
      tell us whether the payment to the note holders to not exercise their put
      rights was part of the indenture agreement, or was separately negotiated.
      In addition, tell us how the payment amount was calculated.

      We believe that the appropriate accounting under GAAP for the payments
      made to the holders of our convertible Notes to waive their contractual
      put rights under the indentures and to consent to the amendment of certain
      other terms of the indentures is EITF 96-19 "Debtor's Accounting for a
      Modification or Exchange of Debt Instruments" ("EITF 96-19"). These
      modifications did not represent a "substantial modification" of the terms
      of the Notes that would be required to be accounted for as an
      extinguishment of debt under EITF 96-19. Rather, we applied the guidance
      in EITF 96-19 for accounting for fees paid by the debtor as part of a
      modification (that is not an extinguishment of debt) and applied the
      interest method in amortizing the payment over the period ending on the
      next contractual put date (typically twelve months).

      Background

      In 2001 we issued the 2031 Notes. In 2002 we issued the 2032 Notes. And,
      in 2003 we issued the 2033 Notes, collectively the "Notes". All the Notes
      were issued at 100% of the principal amount (no discount) and do not have
      a coupon. The Notes are convertible into shares of our common stock at
      conversion rates specified in each of the indentures. The Notes provide
      the holders with the option to require us to repurchase the Notes (put
      rights) on dates specified in the indentures (put dates). The 2031 Notes
      and 2032 Notes have annual put dates and the 2033 Notes have put dates
      every 24 or 36 months, through 2013.

      On August 2, 2005, we paid the holders of our 2032 Notes that consented to
      the proposed indenture amendments described below, $37.50 per $1,000 note
      ($33.5 million) not to exercise their contractual put right under the
      indenture on July 31, 2005, effectively deferring their put right until
      the next contractual put date, July 31, 2006.

      On November 30, 2004, we paid the holders of our 2031 Notes that consented
      to the proposed indenture amendments described below, $17.50 per $1,000
      note ($14.8 million) not to exercise their contractual put right under the
      indenture on February 7, 2005, effectively deferring their put right until
      the next contractual put date, February 7, 2006.

      In November and December 2004, we paid the holders of our 2033 Notes that
      consented to the proposed indenture amendments described below, $2.50 per
      $1,000 note ($1.5 million).

      As a condition for receiving these payments, the holders of the 2031 Notes
      and the 2032 Notes agreed to waive their right to put on the date
      specified in the indentures, effectively deferring this right until the
      next contractual put date. Alternatively, the holders could have put the
      2031 Notes and the 2032 Notes for payment of the par value of the Notes on
      the contractual put date, or done nothing (in which case they would not
      have received any payment). Additionally, as a condition for receiving the
      payments,


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August 2, 2006
Page 12

      the holders of the 2031 Notes, 2032 Notes and the 2033 Notes agreed to
      consent to certain modifications to amend the indentures governing the
      Notes. As described in more detail in Note 4 to our 2005 Consolidated
      Financial Statements included in our Form 10-K, we amended the provisions
      regarding payment to the holders of the Notes in the event of a put, as
      well as the provisions regarding payment to the holders in the event they
      exercise their conversion right. We concluded that the modifications
      described above did not represent "substantial modifications", as defined
      in EITF 96-19.

      Accounting Analysis under GAAP

      We believe that the appropriate accounting under GAAP for the amortization
      of these payments is EITF 96-19. EITF 96-19 provides that "Fees paid by
      the debtor ... as part of the exchange or modification are to be accounted
      for as follows: ... If the exchange or modification is not to be accounted
      for in the same manner as a debt extinguishment, then the fees are to be
      associated with the replacement or modified debt instrument and, along
      with any unamortized premium or discount, amortized as an adjustment of
      interest expense over the remaining term of the replacement or modified
      debt instrument using the interest method."

      In applying the accounting guidance in the previous paragraph, we first
      evaluated whether the modifications to not exercise certain put rights and
      the modifications to consent to certain amendments to the indentures
      represented a "substantial modification" of the terms of the existing
      instruments that would be required to be accounted for as an
      extinguishment.

      EITF 96-19 defines a "substantial modification" as a modification where
      "the present value of the cash flows under the terms of the new debt
      instrument is at least 10% different from the present value of the
      remaining cash flows under the terms of the original instrument." Because
      the Notes were issued at 100% of the principal amount (no discount), they
      do not have a coupon, they include periodic put dates and we have the
      ability to call the Notes at certain points in time, it is difficult to
      predict future cash flows. Therefore, we evaluate the changes in the cash
      flows by comparing the publicly traded market price of the Notes prior to
      the announcement of the modification or amendment to the publicly traded
      market price of the Notes after the announcement of the modification or
      amendment. In all cases, the change in the publicly traded market price
      was less than 1%. Therefore, we concluded that the modifications or
      amendments were not "substantial modifications" as defined in EITF 96-19
      and we applied the guidance for accounting for fees paid by the debtor as
      part of a modification.

      In these circumstances, the holders of the Notes agreed to consent to
      waive their right under the indentures to exercise their put on the
      contractual put date, and/or consented to certain amendments to the
      indentures in exchange for cash consideration. These cash payments should
      be accounted for by amortizing the costs over the period of the
      modification in accordance with the consensus reached in EITF 96-19. In
      these circumstances, the appropriate period for amortization, is the
      period from the date of the payment to the maturity date, or if sooner, to
      the next contractual put date specified in the indentures.

      Additionally, we believe that there is analogous support of this
      accounting treatment in Statement of Financial Accounting Standards No. 91
      (As Amended) "Accounting for Nonrefundable Fees



Securities and Exchange Commission
August 2, 2006
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      Associated with Originating or Acquiring Loans and Initial Direct Costs of
      Leases" ("SFAS 91"). Paragraph 13 of SFAS 91 provides that "... if only
      minor modifications are made to the original loan contract...the
      investment in the new loan shall consist of...any fees received." Further,
      paragraph 18 of SFAS 91 provides that "net fees and costs are required to
      be recognized as yield adjustments over the life of the loan." Although
      SFAS 91 is written from the perspective of the lender, we believe the
      analogy is appropriate because the payment is non-refundable and as
      described below, principally represents an interest payment.

      The terms of the payment to the holders of the Notes were not defined in
      and were not part of the indentures. The Notes are zero coupon zero yield
      notes issued at par. The payment amounts were determined by Omnicom and
      with respect to the 2031 and 2032 Notes represent principally a one-year
      interest payment as described below. With respect to each payment, the
      holders had the option of accepting the terms of the offer and receiving
      the consideration, not accepting the offer and exercising their put right,
      or doing nothing. If the holders did not accept the offer and did not
      exercise their put rights, their Notes would not have been modified and
      they would not have received a payment.

      The value of the payment is a function of, among other things, the short
      term interest rates at the time of the applicable put date plus a factor
      for credit risk. For example, the payment made in August 2005 to holders
      of our 2032 Notes represented a yield to the next put date of
      approximately 3.75%. Our effective borrowing rate for a comparable
      twelve-month period at that time was approximately 3.93%. The payment made
      in November 2004 to holders of our 2031 Notes represented a yield to the
      next put date of approximately 1.75%. Our effective borrowing rate for a
      comparable fourteen-month period at that time was approximately 2.69%. We
      believe this demonstrates that these payments effectively represent
      supplemental interest payments and consistent with the requirements of
      EITF 96-19, they should be amortized through the period to the next put
      date.

      Subsequent Events

      On June 27, 2006, we made a supplemental interest payment of $11.7 million
      to holders of our 2033 Notes that did not put their notes back to us and
      consented to certain amendments to the notes and related indenture as of
      June 27, 2006. On August 2, 2006, we made a supplemental interest payment
      of $23.6 million to holders of our 2032 Notes that did not put their notes
      back to us on August 1, 2006. As discussed above, in accordance with EITF
      No. 96-19, we will amortize these supplemental interest payments ratably
      through the period to their next put dates. The next put date for the 2033
      Notes is June 15, 2008 and the next put date for the 2032 Notes is August
      1, 2007. With respect to these payments, the holders had the option of
      accepting the terms of the offer and receiving the consideration, not
      accepting the offer and exercising their put right, or doing nothing.
      Certain holders of the 2033 Notes did not accept the offer and did not
      exercise their put rights. As a result, their Notes were not modified and
      they did not receive the payment. Additionally, certain holders of both
      the 2033 and the 2032 Notes exercised their put right and we repurchased
      their Notes.

      Conclusion

      We believe that the appropriate accounting under GAAP for accounting for
      the payments made to the holders of the Notes to modify the Notes to
      waive their contractual put rights under the indentures until the next
      put date and to consent to amendments made to the indentures is EITF
      96-19. As long as the modifications do not represent a "substantial
      modification" which would require extinguishment accounting, these
      modifications should be accounted for using the interest method with
      amortization of the payments over the period ending on the next
      contractual put date. Additionally, we view these payments to holders of
      the Notes (that were not issued at a discount



Securities and Exchange Commission
August 2, 2006
Page 14

      and do not pay interest) as supplemental interest payments. We believe
      that our accounting treatment is consistent with the substance of these
      transactions.

      We will disclose in future filings the appropriate basis used under GAAP
      for amortizing these payments.

                                      ****

      At the request of the Staff, Omnicom, acknowledges that (i) Omnicom is
responsible for the adequacy and accuracy of the disclosure in the
above-referenced filings, (ii) Staff comments or changes to disclosure in
response to Staff comments do not foreclose the Commission from taking any
action with respect to the above-referenced filings, and (iii) Omnicom will not
assert Staff comments as a defense in any proceeding initiated by the Commission
or any person under the federal securities laws of the United States.

      We hope that you find the foregoing to be responsive. In all events,
please do not hesitate to contact us if you have any questions regarding the
foregoing and, of course, if you have any additional comments. Questions or
comments should be directed to the undersigned at (212) 415-3098.

      Thank you in advance for your cooperation in these matters.

                                   Very truly yours,

                                   Philip J. Angelastro
                                   Senior Vice President Finance and Controller

cc:       Joe Casacarano (SEC)
          Carlos Pacho (SEC)
          Randall J. Weisenburger (Omnicom)
          Michael J. O'Brien, Esq. (Omnicom)
          Robert A. Profusek, Esq. (Jones Day)
          Meredith L. Deutsch, Esq. (Jones Day)
          Larry Bradley (KPMG)