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): August 1, 2007

                           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)

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 (see General Instruction A.2.):

|_|   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

|_|   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 (7 CFR 240.13e-4(c))

Item 2.02. Results of Operations and Financial Condition.

On August 1, 2007, the Company issued a press release setting forth the
Company's results of operations and financial condition for its fiscal quarter
ended June 30, 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 August 1, 2007
      (furnished herewith).


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/ Brian McKeon
                                     Name:  Brian McKeon
                                     Title: EVP and Chief Financial Officer

Date: August 1, 2007