Exhibit 32.1
CERTIFICATION
In connection with the Quarterly Report onForm 10-Q of Fannie Mae (formally, the Federal National
Mortgage Association) for the quarter ended September 30, 2010, as filed with the Securities and
Exchange Commission on the date hereof (the “Report”), I, Michael J. Williams, President and Chief
Executive Officer of Fannie Mae, certify, pursuant to 18 U.S.C. Section 1350 that to my knowledge:
| 1. | The Report fully complies with the requirements of Section 13(a) or 15(d), as applicable, 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 Fannie Mae. |
/s/ Michael J. Williams
Michael J. Williams
President and Chief Executive Officer
Dated: November 5, 2010
The foregoing certification is being furnished solely pursuant to 18 U.S.C. Section 1350 and is not being filed as part of the Report or as a separate disclosure document.