Exhibit 32.1
                            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  Quarterly  Report of  Capital  Trust,  Inc.  (the
     "Company")  on Form 10-Q for the period  ending June 30, 2006 as filed with
     the Securities and Exchange  Commission on the date hereof (the  "Report"),
     I, John R. Klopp, Chief Executive 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  result  of
                operations of the Company.

     /s/ John R. Klopp
     -----------------
     John R. Klopp
     Chief Executive Officer
     August 8, 2006