WASHINGTON, D.C. 20549

                                    FORM 8-K

                                 CURRENT REPORT
                       Pursuant to Section 13 or 15(d) of
                       The Securities Exchange Act of 1934

       Date of Report (Date of earliest event reported): February 26, 2004

                           IRON MOUNTAIN INCORPORATED
             (Exact name of registrant as specified in its charter)

                 (State or other jurisdiction of incorporation)

                1-13045                            23-2588479
        (Commission File Number)       (IRS Employer Identification No.)

                               745 Atlantic Avenue
                           Boston, Massachusetts 02111
          (Address of principal executive offices, including zip code)

                                 (617) 535-4766
              (Registrant's telephone number, including area code)

Item 12. Results of Operations and Financial Condition.

On February 26,  2004,  the Company  issued a press  release  setting  forth the
Company's  results of  operations  and  financial  condition  for its year ended
December 31, 2003. A copy of the Company's  press release is attached  hereto as
Exhibit 99.1 and is incorporated herein by reference.


Pursuant to the requirements of the Securities Exchange Act of 1934, the
Registrant has duly caused this report to be signed on its behalf by the
undersigned thereunto duly authorized.

                                  IRON MOUNTAIN INCORPORATED

                                  By: /s/ Jean A. Bua.

                                  Name:  Jean A. Bua
                                  Title: Vice President and Corporate Controller

Date: February 26, 2004