Exhibit 32.1

Certification of CEO and CFO
Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002

In connection with the annual report of Corriente Resources Inc. (the "Registrant") on Form 40-F for the year ended December 31, 2008, as filed with the Securities and Exchange Commission on the date hereof (the "Report"), Kenneth R. Shannon, as Chief Executive Officer of the Registrant, and Darryl F. Jones, as Chief Financial Officer of the Registrant, each hereby certifies, pursuant to 18 U.S.C. § 1350, as adopted pursuant to § 906 of the Sarbanes-Oxley Act of 2002, to the best of his knowledge, 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 Registrant.

/S/ KENNETH R. SHANNON              
By: Kenneth R. Shannon
Title: Chief Executive Officer
March 30, 2009

/S/ DARRYL F. JONES                         
By: Darryl F. Jones
Title: Chief Financial Officer
March 30, 2009

This certification accompanies the Report pursuant to § 906 of the Sarbanes-Oxley Act of 2002 and shall not, except to the extent required by the Sarbanes-Oxley Act of 2002, be deemed filed by the Registrant for purposes of §18 of the Securities Exchange Act of 1934, as amended.