SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549

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                                    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 5, 2003

                            FORRESTER RESEARCH, INC.
                 (Exact Name of Registrant Specified in Charter)

          Delaware                    000-21433               04-2797789
(State or Other Jurisdiction         (Commission           (I.R.S. Employer
      of Incorporation)              File Number)         Identification No.)


400 Technology Square, Cambridge, Massachusetts                02139
(Address of Principal Executive Offices)                     (Zip Code)


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

    N/A
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(Former Name or Former Address, if Changed Since Last Report)

                                   Page 1 of 5
                         Exhibit Index appears on Page 4




ITEM 7.    Financial Statements and Exhibits.

           (c) Exhibits

               99.1     Press Release dated August 5, 2003.

ITEM 12.  RESULTS OF OPERATIONS AND FINANCIAL CONDITION.

     The  information  contained in this current report on Form 8-K is furnished
pursuant to Item 12 of Form 8-K "Results of Operations and Financial Condition."
This  information  and the exhibits  hereto are being furnished and shall not be
deemed to be "filed" for the purposes of Section 18 of, or otherwise regarded as
filed under,  the Securities  Exchange Act of 1934, as amended.  The information
contained in this report shall not be  incorporated by reference into any filing
of Forrester Research,  Inc. with the SEC, whether made before or after the date
hereof, regardless of any general incorporation language in such filings.

     On  August  5,  2003,  Forrester  Research,  Inc.  issued  a press  release
announcing  its financial  results for the quarter ended June 30, 2003, the full
text of which is attached hereto as Exhibit 99.1.

     Forrester  believes that pro forma financial results provide investors with
consistent and comparable information to aid in the understanding of Forrester's
ongoing business. Our pro forma presentation excludes the following:

     Amortization  of intangible  assets - We exclude the non-cash effect of the
amortization of  acquisition-related  intangibles  from our pro forma results in
order to present a consistent basis for quarterly comparisons.

     Integration  costs - We exclude  the costs  related to our  acquisition  of
Giga, which are primarily related to orientation  events and data migration,  in
order to present a consistent basis for quarterly comparisons.

     Impairments of non-marketable  securities - We have  consistently  excluded
both  one-time  gains and  one-time  write-offs  related to our  investments  in
non-marketable  securities  from our pro  forma  results  in order to  present a
consistent basis for quarterly comparisons of our results of operations.

     Reorganization  costs - We  exclude  restructuring  charges  from our first
quarter  2002 pro forma  results  because our  failure to do so would  present a
misleading improvement in our pro forma results in the six months ended June 30,
2003 as compared to the same period in 2002.

     However,  these  measures  should be  considered  in addition  to, not as a
substitute for, or superior to,  operating income or other measures of financial
performance prepared in accordance with generally accepted accounting principles
as more fully discussed in the Forrester's financial statements and filings with
the Securities and Exchange Commission.

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                                    SIGNATURE


         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.


                           By: /s/ WARREN HADLEY
                               -----------------
                                  Name:  Warren Hadley
                                  Title: Treasurer and Chief Financial Officer


Dated: August 5, 2003




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                                  Exhibit Index




Exhibit      Description                                     Page
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99.1         Press Release dated August 5, 2003.               5



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