Exhibit 23.1

                NOTICE REGARDING CONSENT OF ARTHUR ANDERSEN LLP

     Arthur Andersen LLP, the independent public accountants that audited
Forrester Research, Inc.'s (the "Company") consolidated financial statements as
of December 31, 2001 and for each of the previous five years in the period then
ended, was convicted on June 15, 2002 on federal obstruction of justice charges
arising from the government's investigation of Enron Corp. Arthur Andersen LLP
has announced that it will cease practicing before the Securities and Exchange
Commission ("SEC") by August 31, 2002, unless the SEC determines another date is
appropriate.

     Because the Company's former engagement team leaders left Arthur Andersen
LLP before  the Company filed this registration statement, Arthur Andersen LLP
did not participate in the preparation of this registration statement. As a
result, the Company has not been able to obtain, after reasonable efforts, the
written consent of Arthur Andersen LLP to the incorporation by reference to this
registration statement of its report dated January 29, 2002 (the "Report") on
the Company's consolidated financial statements for the years ended December 31,
2000 and December 31, 2001 (the "Financial Statements") from the Company's Form
10-K for the fiscal year ended December 31, 2001. As permitted under Rule 437a
promulgated under the Securities Act of 1933, as amended (the "Securities Act"),
the Company has not filed the written consent of Arthur Andersen LLP to the
incorporation by reference to this registration statement of its Report on the
Financial Statements that would otherwise be required by the Securities Act. As
a result, your ability to assert claims against Arthur Andersen LLP under the
Securities Act based on this registration statement may be limited. In addition,
notwithstanding that the Company has not filed the written consent of Arthur
Andersen LLP relating to the Financial Statements, the Company's directors and
officers may still be entitled to establish a due diligence defense to any claim
relating to the Financial Statements on the basis that they were made on the
authority of an expert.


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