Exhibit 32

CERTIFICATION OF CEO AND CFO FURNISHED PURSUANT TO
18 U.S.C. § 1350,
AS ADOPTED PURSUANT TO
§ 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Quarterly Report on Form 10-Q of MoSys, Inc. (the “Company”) for the quarterly period ended September 30, 2007 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), each of Chester J. Silvestri, Chief Executive Officer and President of the Company and Yoshiko Ribar, Corporate Controller and Principal Accounting Officer of the Company, hereby certifies, pursuant to 18 U.S.C. § 1350, as adopted pursuant to § 906 of the Sarbanes-Oxley Act of 2002, to the best of his knowledge, that:

(1)   The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934, as amended; and

(2)   The information contained in the Report fairly presents, in all material respects, the financial condition and result of operations of the Company.

/s/ Chester J. Silvestri

Chester J. Silvestri

Chief Executive Officer and President

(Principal Executive Officer
and Principal Financial Officer)

November 8, 2007

/s/ Yoshiko Ribar

Yoshiko Ribar

Corporate Controller and

Principal Accounting Officer

November 8, 2007

This certification accompanies this Report pursuant to § 906 of the Sarbanes-Oxley Act of 2002 and shall not, except to the extent required by the Sarbanes-Oxley Act of 2002, or otherwise required, be deemed filed by the Company for purposes of § 18 of the Securities Exchange Act of 1934, as amended.