Seward & Kissel LLP
                              1200 G Street, N.W.
                             Washington, D.C. 20005
                           Telephone: (202) 737-8833
                           Facsimile: (202) 737-5184
                                 www.sewkis.com


                                                     October 25, 2010

VIA EDGAR

Ms. Linda Stirling
Division of Investment Management
Securities and Exchange Commission
100 F Street, N.E.
Washington, D.C. 20549

       Re:  AllianceBernstein Cap Fund, Inc. - AllianceBernstein International
            Discovery Equity Portfolio
            Post-Effective Amendment No. 91
            File Nos. 2-29901 and 811-1716

Dear Ms. Stirling:

       This  letter  responds  to  comments  of  the  staff (the "Staff") of the
Securities  and Exchange Commission (the "SEC") to the post-effective amendments
to  the registration statement filed on Form N-1A of AllianceBernstein Cap Fund,
Inc.  on  behalf of its series, AllianceBernstein International Discovery Equity
Portfolio  (the  "Fund"),  as  provided  orally  to  Young Seo of this office on
October 4, 2010. The Staff's comments and our responses are discussed below.

Prospectus

Comment 1:  Fees and Expenses of the Fund: In the Annual Fund Operating
            Expenses table, the phrase, "Before Waiver", should be deleted from
            the row heading, "Total Annual Fund Operating Expenses Before
            Waiver", because it is not required by Form N-1A.

Response:   We have revised the disclosure in response to this comment.

Comment 2:  Fees and Expenses of the Fund: The footnotes to the fee tables
            should be sequential.

Response:   We have revised the disclosure in response to this comment.

Comment 3:  Portfolio Turnover: Please use "Fund shares" in lieu of "shares"
            in the Portfolio Turnover disclosure.



Response:   We have revised the disclosure in response to this comment.

Comment 4:  Principal Strategies: The second paragraph of the Principal
            Strategies section states that the Fund invests primarily in small-
            and mid-cap companies with capitalization ranges of up to the
            greater of $13 billion or the market capitalization of the largest
            company in the MSCI AC World SMID Index (ex-U.S.)(Net). The Staff
            considers any company with a capitalization of over $10 billion as a
            large-cap company. Consider changing the capitalization range or
            provide an explanation as to why any capitalization over $13 billion
            would be appropriate for a "mid-cap" company.

Response:   Market capitalizations rank stocks in groups. Mid-cap companies are
            those ranked in the middle between large-cap and small-cap
            companies. The market capitalizations of companies are not a fixed
            number, but change in accordance with market valuations. The market
            capitalization of the largest company in the MSCI AC World SMID
            Index is currently approximately $15 billion. We believe that the
            capitalization range selected by the Fund is appropriate and clearly
            disclosed to investors and Fund shareholders.

Comment 5:  Principal Strategies: The second to the last sentence in the
            second paragraph states that "Under normal market conditions, the
            Fund invests significantly (at least 40% - unless market conditions
            are not deemed favorable by the Adviser) in securities of non-U.S.
            companies." A clarification should be provided as to what is meant
            by "unless market conditions are not deemed favorable by the
            Adviser".

Response:   We have not revised the disclosure in response to this comment. We
            added the same disclosure to other Alliancebernstein Funds at the
            request of the Staff. We believe it is appropriate to disclose that
            market conditions may necessitate deviations from the 40% level
            similar to the Fund's disclosure that it may take temporary
            defensive positions to respond to adverse market, economic,
            political or other conditions and, as a result, deviate from its
            investment strategies.

Comment 6:  Principal Strategies: An explanation of how the Fund defines
            "non-U.S. companies" should be provided.

Response:   We have revised the disclosure in response to this comment.

Comment 7:  Principal Strategies: The Staff suggests that the fourth, fifth and
            sixth paragraphs be stated more succinctly for the Summary section.

Response:   We have not revised the disclosure in response to this comment. We
            believe that the disclosure is appropriate for the summary section
            of the Prospectus.



Comment 8:  Principal Strategies: The sentence, "The Fund's investments in
            companies with smaller capitalizations may offer more reward but may
            also entail greater risk than is generally true of larger, more
            established companies", is not an investment strategy and should be
            included elsewhere in the Prospectus.

Response:   We have not revised the disclosure in response to this comment. The
            disclosure is intended to highlight how the Fund's strategies differ
            from other Funds.

Comment 9:  Principal Strategies: If investing in small-cap companies is a
            principal strategy of the Fund, a risk disclosure regarding such
            investments should be included in the Principal Risks section.

Response:   We note that a "capitalization risk" disclosure regarding the risks
            of investing in small-cap companies is already included in the
            Principal Risks section.

Comment 10: Principal Risks: The first sentence of the fourth paragraph in the
            Principal Strategies section states that the Fund may invests in
            unlisted securities. A corresponding risk disclosure should be
            included in the Principal Risks section.

Response:   We have not revised the disclosure in response to this comment. We
            believe that unlisted securities have the same market risk as listed
            securities and that separate risk disclosure is not necessary.

Comment 11: Principal Risks: The second sentence of the fourth paragraph in the
            Principal Strategies section states that the Fund may invests in
            warrants. A corresponding risk disclosure should be included in the
            Principal Risks section.

Response:   We have revised the disclosure in response to this comment to add
            liquidity risk and reference synthetic foreign equity securities,
            which are the type of warrants that are described in the Prospectus.
            We do not believe that a separate risk disclosure is necessary or
            appropriate.

Comment 12: Additional Information About the Fund's Risks and Investments: As
            stated in the July 30, 2010 Letter to the Investment Company
            Institute, disclosure regarding investments in derivatives should be
            tailored to how this particular Fund uses derivatives.

Response:   We have not revised the disclosure in response to this comment
            because we believe that the disclosure describes the derivatives
            used by the Fund.



Comment 13: Management of the Fund - Performance of Similarly Managed Account:
            Disclosure of performance of similarly managed accounts should
            include all accounts managed in a substantially similar manner.
            Please confirm whether this is the case.

Response:   We confirm that the disclosure of performance of similarly managed
            accounts includes all accounts managed in a substantially similar
            manner.

                                     * * *

     We hereby acknowledge that (i) the Fund is responsible for the adequacy and
accuracy of the disclosures in the filing; (ii) Staff comments or changes to
disclosure in response to Staff comments in the filing reviewed by the Staff do
not foreclose the SEC from taking any action with respect to the filing; and
(iii) the Fund may not assert Staff comments as a defense in any proceedings
initiated by the SEC or any person under the federal securities laws of the
United States.

     If you have any additional comments or questions, please contact Kathleen
Clarke or the undersigned at (202) 737-8833.

                                         Sincerely,


                                         /s/ Young Seo
                                         --------------
                                         Young Seo


cc:    Andrew L. Gangolf, Esq.
       Stephen J. Laffey, Esq.
       Kathleen K. Clarke, Esq.



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