Cray Inc. Corporate Headquarters 411 First Avenue S., Suite 600 Seattle, WA 98104-2860 USA tel (206) 701-2000 fax (206) 701-2500 www.cray.com January 25, 2006 VIA EDGAR Securities and Exchange Commission 100 F Street, N.E. Washington, D.C. 20549 Attention: Ms. Barbara C. Jacobs, Assistant Director Re: Cray Inc. Post-Effective Amendment No. 1 to Form S-3 Registration Statement File No. 333-123135 Ladies and Gentlemen: Pursuant to Rule 477 under the Securities Act of 1933, as amended, Cray Inc. (the "Company") hereby respectfully requests that the Securities and Exchange Commission consent to the withdrawal, effective as of the date hereof or as soon as practicable thereafter, of Post-Effective Amendment No. 1, including the exhibits filed therewith (the "Post-Effective Amendment"), to the Company's Form S-3 Registration Statement (File No. 333-123135) (the "Registration Statement"). The Post-Effective Amendment was filed by the Company on October 17, 2005. The Company requests withdrawal of the Post-Effective Amendment because, pursuant to Rule 424(b)(7) and Rule 430B(d), the Company on January 20, 2006, filed a supplement to the prospectus contained in the Registration Statement which updates information regarding the selling securityholders and makes the Post-Effective Amendment unnecessary. If you have any questions or require anything further in connection with this request, please call the undersigned at 206-701-2000 or L. John Stevenson, Jr. at 206-386-7603 or Benjamin F. Stephens at 206-386-7675 of Stoel Rives LLP, outside counsel to the Company. Cray Inc. By: /s/ Kenneth W. Johnson ------------------------- Kenneth W. Johnson Senior Vice President and General Counsel