<DOCUMENT>
<TYPE>EX-32
<SEQUENCE>7
<FILENAME>imc321.txt
<DESCRIPTION>IAN M. CUMMING EXHIBIT 32.1
<TEXT>



                                                            Exhibit 32.1


                                  CERTIFICATION
                       PURSUANT TO 18 U.S.C. SECTION 1350,
           AS ADOPTED BY SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002



         I, Ian M. Cumming, as Chairman of the Board and Chief Executive Officer
of Leucadia National Corporation (the "Company") certify, pursuant to 18 U.S.C.
ss. 1350, as adopted by Section 906 of the Sarbanes-Oxley Act of 2002, that to
my knowledge:

         (1) the accompanying Form 10-K report for the fiscal year ended
December 31, 2007 as filed with the U.S. Securities and Exchange Commission (the
"Report") fully complies with the requirements of Section 13(a) or 15(d) of the
Securities Exchange Act of 1934, as amended; and

         (2) the information contained in the Report fairly presents, in all
material respects, the financial condition and results of operations of the
Company.



Dated:  February 29, 2008

                                        By: /s/ Ian M. Cumming
                                            ----------------------
                                            Ian M. Cumming
                                            Chairman of the Board and
                                            Chief Executive Officer





</TEXT>
</DOCUMENT>
