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): APRIL 1, 2002

                            FORRESTER RESEARCH, INC.
             (Exact name of registrant as specified in its charter)

           DELAWARE                    000-21433                 04-2797789
(State or other jurisdiction of   (Commission file number)    (I.R.S. Employer
incorporation or organization)                               Identification No.)

          400 TECHNOLOGY SQUARE                                    02139
        CAMBRIDGE, MASSACHUSETTS
(Address of principal executive offices)                         (Zip Code)

                                 (617) 613-6000
              (Registrant's telephone number, including area code)

                                 NOT APPLICABLE
          (Former name or former address, if changed since last report)







ITEM 4.   CHANGES IN REGISTRANT'S CERTIFYING ACCOUNTANT.

On April 1, 2002, the Audit Committee of Forrester Research, Inc. ("Forrester")
recommended, and the Board of Directors of Forrester decided, to no longer
engage Arthur Andersen LLP ("Andersen") as Forrester's independent public
accountants and engaged Deloitte & Touche LLP to serve as Forrester's
independent public accountants for the fiscal year 2002.

Andersen's reports on Forrester's consolidated financial statements for each of
the years ended December 31, 2001 and December 31, 2000 did not contain an
adverse opinion or disclaimer of opinion, nor were they qualified or modified as
to uncertainty, audit scope, or accounting principles. During the years ended
December 31, 2001 and December 31, 2000 and through the date hereof, there were
no disagreements with Andersen on any matter of accounting principles or
practices, financial statement disclosure, or auditing scope or procedure which,
if not resolved to Andersen's satisfaction, would have caused it to make
reference to the subject matter in connection with its report on Forrester's
consolidated financial statements for such years. There were no reportable
events as defined in Item 304(a)(1)(v) of Regulation S-K.

Forrester has provided Andersen with a copy of the foregoing disclosures. A
letter from Andersen addressed to the Securities and Exchange Commission is
included as Exhibit 16.1 to this Current Report on Form 8-K and states that
Andersen agrees with such disclosure.

During the years ended December 31, 2001 and December 31, 2000 and through the
date hereof, Forrester did not consult Deloitte & Touche with respect to the
application of accounting principles to a specified transaction, either
completed or proposed, or the type of audit opinion that might be rendered on
Forrester's consolidated financial statements, or any other matter that was
either the subject of a disagreement (as defined in Item 304(a)(1)(iv) of
Regulation S-K) or a reportable event (as described in Item 304(a)(1)(v) of
Regulation S-K).

ITEM 7.   FINANCIAL STATEMENTS AND EXHIBITS.

(c)   EXHIBITS.


EXHIBIT
NUMBER        DESCRIPTION OF EXHIBIT
- -------       ----------------------
16.1          Letter from Arthur Andersen LLP to the SEC, dated April 5,
              2002, regarding change in certifying accountant.

99.1          Press release of Forrester Research, Inc. dated April 3, 2002.







                                   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 hereunto duly authorized.


                                       Forrester Research, Inc.

Date: April 5, 2002                    By: /s/ WARREN HADLEY
                                          --------------------------------------
                                          Warren Hadley
                                          Chief Financial Officer and
                                          Treasurer (Principal Financial
                                          and Accounting Officer)








                                  EXHIBIT INDEX


EXHIBIT
NUMBER        DESCRIPTION OF EXHIBIT
- -------       ----------------------
16.1          Letter from Arthur Andersen LLP to the SEC, dated April 5,
              2002, regarding change in certifying accountant.

99.1          Press release of Forrester Research, Inc. dated April 3, 2002.