Exhibit 32.1

CERTIFICATION PURSUANT TO

18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Annual Report of Dolby Laboratories, Inc (the “Company”), on Form 10-K for the fiscal year ended September 30, 2005, as filed with the Securities and Exchange Commission (the “Report”), N.W. Jasper, Jr., President and Chief Executive Officer of the Company and Kevin J. Yeaman, Chief Financial Officer of the Company, respectively, do each hereby certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that:

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

• The information in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

Dated: December 19, 2005

/S/    N.W. JASPER, JR.        

N.W. Jasper, Jr.

President and Chief Executive Officer

/S/    KEVIN J. YEAMAN        

Kevin J. Yeaman

Chief Financial Officer