RR Donnelley & Sons (RRD) 10-K 2010 FY Annual report

EXHIBIT 32.2

CERTIFICATION OF CHIEF FINANCIAL OFFICER

CERTIFICATION PURSUANT TO RULE 13a-14(a) AND RULE 15d-14(a)

SECTION 1350, CHAPTER 63 OF TITLE 18

OF THE UNITED STATES CODE,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Annual Report of R. R. Donnelley & Sons Company (the “Company”) on Form 10-K for the period ending December 31, 2010 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Miles W. McHugh, Executive Vice President and Chief Financial Officer of the Company, certify, pursuant to 18 U.S.C. § 1350, as adopted pursuant to § 906 of the Sarbanes-Oxley Act of 2002, that:

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

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

February 22, 2011	/S/    MILES W. MCHUGH
	Miles W. McHugh
	Executive Vice President and Chief Financial Officer