Exhibit 32.2

                         CHIMERA INVESTMENT CORPORATION
                           1211 AVENUE OF THE AMERICAS
                                   SUITE 2902
                            NEW YORK, NEW YORK 10036

                                  CERTIFICATION
                         PURSUANT TO SECTION 906 OF THE
               SARBANES-OXLEY ACT OF 2002, 10 U.S.C. SECTION 1350
         In connection with the quarterly report on Form 10-Q of Chimera
Investment Corporation (the "Company") for the period ended September 30, 2008
to be filed with Securities and Exchange Commission on or about the date hereof
(the "Report"), I, A. Alexandra Denahan, Chief Financial Officer and Secretary
of the Company, certify, pursuant to Section 906 of the Sarbanes-Oxley Act of
2002, 18 U.S.C. Section 1350, 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 at the dates of, and for the periods covered by, the
         Report.
It is not intended that this statement be deemed to be filed for purposes of the
Securities Exchange Act of 1934.

                                                     /s/ A. Alexandra Denahan
                                                     ------------------------
                                                     A. Alexandra Denahan
                                                     Chief Financial Officer
                                                     November 10, 2008


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