UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             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): May 2, 2007

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

                                    DELAWARE
                 (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)

Check the appropriate box below if the Form 8-K filing is intended to
simultaneously satisfy the filing obligation of the registrant under any of the
following provisions:

|_| Written communications pursuant to Rule 425 under the Securities Act (17 CFR
230.425)

|_| Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR
240.14a-12)

|_| Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange
Act (17 CFR 240.14d-2(b))

|_| Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange
Act (17 CFR 240.13e- 4(c))



Item 2.02.  Results of Operations and Financial Condition.

On May 2, 2007, the Company issued a press release setting forth the Company's
results of operations and financial condition for its fiscal quarter ended March
31, 2007 and its financial outlook for 2007. A copy of the Company's press
release is furnished herewith as Exhibit 99.1 and is incorporated herein by
reference.

Item 9.01.  Financial Statements and Exhibits.

(d)      Exhibits

99.1     Press Release of Iron Mountain Incorporated dated May 2, 2007
         (furnished herewith).

SIGNATURES

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
                                     (Registrant)

                                      By: /s/ Brian McKeon
                                         -----------------------------------
                                      Name:  Brian McKeon
                                      Title: EVP and Chief Financial Officer

Date: May 2, 2007