Exhibit 32.1

Woodward Governor Company
Section 1350 certifications

We hereby certify, pursuant to 18 U.S.C. Section 1350, that the accompanying Annual Report on Form 10-K for the year ended September 30, 2010, of Woodward Governor Company, fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934 and that information contained in the Annual Report on Form 10-K fairly presents, in all material respects, the financial condition and results of operations of Woodward Governor Company.

Date: November 18, 2010	/s/ Thomas A. Gendron
	Thomas A. Gendron
	Chairman of the Board, Chief Executive Officer, and President
Date: November 18, 2010	/s/ Robert F. Weber, Jr.
	Robert F. Weber, Jr.
	Chief Financial Officer and Treasurer

A signed original of this written statement required by Rule 13a-14(a)/15d-14(a), or other document authenticating, acknowledging, or otherwise adopting the signature that appears in typed form within the electronic version of this written statement required by Rule 13a-14(a)/15d-14(a), has been provided to Woodward and will be retained by Woodward and furnished to the Securities and Exchange Commission or its staff upon request.