COVER 4 filename4.txt SEWARD & KISSEL LLP 1200 G Street, N.W. Washington, DC 20005 Telephone: (202) 737-8833 Facsimile: (202) 737-5184 www.sewkis.com February 25, 2010 Securities and Exchange Commission 100 F Street, N.E. Washington, DC 20549 Re: AllianceBernstein Variable Products Series Fund, Inc. (the "Company") File Nos. 33-18647 and 811-5398 --------------------------------------------------------------------- Dear Sir or Madam: Pursuant to Rule 485(a) under the Securities Act of 1933, the Company hereby submits Post-Effective Amendment No. 50 to the Company's Registration Statement ("PEA# 50"). We are making this filing to comply with the amendments to Form N-1A adopted in Release No. IC-28584 (January 13, 2009). PEA# 50 is marked in accordance with Rule 310 of Regulation S-T to show changes from Post-Effective Amendment No. 49. For your information, disclosure in a prospectus format similar to the format of disclosure in PEA#50 has previously been reviewed by the Office of Disclosure. If you have any questions regarding the enclosed, please do not hesitate to contact the undersigned at (202) 737-8833. Sincerely, /s/ Young Seo -------------- Young Seo Attachment SK 00250 0292 1076011