Exhibit 32.2

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 Duke Realty Corporation (the “Company”) on Form 10-K for the year ending December 31, 2006 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Matthew A. Cohoat, Executive Vice President and Chief Financial Officer of the Company, certify, pursuant to 18 U.S.C. § Section 1350, as adopted pursuant to § Section 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 the operations of the Company.

/s/     Matthew A. Cohoat

Matthew A. Cohoat

Executive Vice President and

Chief Financial Officer

Date: February 28, 2007

A signed original of this written statement required by Section 906, 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 Section 906, has been provided to Duke Realty Corporation, and will be retained by Duke Realty Corporation and furnished to the Securities and Exchange Commission or its staff upon request.