As filed with the Securities and Exchange Commission on September 28, 1998
                                                           Registration No. 333-
================================================================================
                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549

                                ----------------

                                    FORM S-8
                             REGISTRATION STATEMENT
                                      UNDER
                           THE SECURITIES ACT OF 1933

                                 -------------

                          GIGA INFORMATION GROUP, INC.
             (Exact Name of Registrant as Specified in its Charter)


           DELAWARE                                      06-1422860
(State or Other Jurisdiction of           (I.R.S. Employer Identification No.)
Incorporation or Organization)


                              ONE LONGWATER CIRCLE
                          NORWELL, MASSACHUSETTS 02061
                                 (781) 982-9500
               (Address, Including Zip Code, and Telephone Number,
        including Area Code, of Registrant's Principal Executive Offices)


                          GIGA INFORMATION GROUP, INC.
                      1995 STOCK OPTION/STOCK ISSUANCE PLAN


                              (Full Title of Plan)


                                GIDEON I. GARTNER
                      CHIEF EXECUTIVE OFFICER AND PRESIDENT
                          GIGA INFORMATION GROUP, INC.
                              ONE LONGWATER CIRCLE
                          NORWELL, MASSACHUSETTS 02061
                                 (781) 982-9500
                     (Name and Address, Including Zip Code,
        and Telephone Number, Including Area Code, of Agent For Service)


                                   Copies to:

                             GERALD S. BACKMAN, P.C.
                           WEIL, GOTSHAL & MANGES, LLP
                                767 FIFTH AVENUE
                            NEW YORK, NEW YORK 10153
                                 (212) 310-8000


                         CALCULATION OF REGISTRATION FEE
<TABLE>
<CAPTION>

====================================================================================================================================
 Title of Each Class of Securities to be      Amount to be         Proposed Maximum       Proposed Maximum          Amount of
               Registered                     Registered(1)       Offering Price Per     Aggregate Offering      Registration Fee
                                                                       Share(2)               Price(2)
------------------------------------------------------------------------------------------------------------------------------------
<S>                                          <C>                      <C>                 <C>                 <C>    

Common Stock, par value $.001 per share          831,389                 $5.00               $4,156,945             $1,226.30
====================================================================================================================================
(1) Plus such indeterminate number of shares of Common Stock of the Registrant
as may be issued to prevent dilution resulting from stock dividends, stock
splits or similar transactions in accordance with Rule 416 under the Securities
Act of 1933. 
(2) Estimated solely for purposes of calculating the registration fee pursuant 
to Rule 457 of the Securities Act of 1933.
====================================================================================================================================

</TABLE>


NYFS07...:\54\47954\0009\2579\FRM8218M.170
<PAGE>
                                     PART I

              INFORMATION REQUIRED IN THE SECTION 10(A) PROSPECTUS

ITEM 1.

            The documents containing the information specified in Part I of this
Registration Statement will be sent or given to employees as specified by Rule
428(b)(1). Such documents are not required to be and are not filed with the
Securities and Exchange Commission (the "Commission") either as part of this
Registration Statement or as prospectuses or prospectus supplements pursuant to
Rule 424. These documents and the documents incorporated by reference in this
Registration Statement pursuant to Item 3 of Part II of this Form S-8, taken
together, constitute a prospectus that meets the requirements of Section 10(a)
of the Securities Act of 1933, as amended (the "Securities Act").

ITEM 2.

            Upon written or oral request, any of the documents incorporated by
reference in Item 3 of Part II of this Registration Statement (which documents
are incorporated by reference in this Section 10(a) Prospectus), other documents
required to be delivered to eligible employees pursuant to Rule 428(b) or
additional information about the Giga Information Group, Inc. 1995 Stock
Option/Stock Issuance Plan are available without charge by contacting:

                         Giga Information Group, Inc.
                             One Longwater Circle
                         Norwell, Massachusetts 02061
                                (781) 982-9500

                         Attention: Daniel M. Clarke
                Senior Vice President, Chief Financial Officer



                                       I-1



<PAGE>
                                     PART II

               INFORMATION REQUIRED IN THE REGISTRATION STATEMENT

ITEM 3. INCORPORATION OF DOCUMENTS BY REFERENCE.

            The following documents filed with the Commission by Giga
Information Group, Inc. (the "Company" or the "Registrant") are incorporated
herein by reference:

            (a) The Company's Quarterly Report on Form 10-Q for the fiscal
quarter ended June 30, 1998.

            (b) The Company's Report on Form 8-K dated August 13, 1998.

            (c) The description of the Company's Common Stock contained in the
Company's Registration Statement on Form 8-A filed with the Commission pursuant
to Section 12 of the Securities Exchange Act of 1934, as amended (the "Exchange
Act"), on July 28, 1998, including any amendment or report filed for the purpose
of updating such description.

            All documents subsequently filed by the Company with the Commission
pursuant to Sections 13(a), 13(c), 14 and 15(d) of the Exchange Act, prior to
the filing of a post-effective amendment to this Registration Statement which
indicates that all securities offered have been sold or which deregisters all
securities then remaining unsold, shall be deemed to be incorporated by
reference in this Registration Statement and to be a part hereof from the date
of filing of such documents.

ITEM 4. DESCRIPTION OF SECURITIES.

            Not applicable

ITEM 5. INTERESTS OF NAMED EXPERTS AND COUNSEL.

            Not applicable.

ITEM 6. INDEMNIFICATION OF DIRECTORS AND OFFICERS.

            Article Seven of the Registrant's Amended and Restated Certificate
of Incorporation (the "Restated Certificate") provides that no director of the
Registrant shall be personally liable for any monetary damages for any breach of
fiduciary duty as a director, except to the extent that the Delaware General
Corporation Law (the "DGCL") prohibits the elimination or limitation of
liability of directors for breach of fiduciary duty.

            Article Eight of the Restated Certificate provides that a director
or officer of the Registrant (a) shall be indemnified by the Registrant against
all expenses (including attorneys' fees), judgments, fines and amounts paid in
settlement incurred in connection with any litigation or other legal proceeding
(other than an action by or in the right of the Registrant) brought against him
by virtue of his position as a director or officer of the Registrant if he acted
in good faith and in a manner he reasonably believed to be in, or not opposed
to, the best interests of the Registrant, and, with respect to any criminal
action or proceeding, had no reasonable cause to believe his conduct was
unlawful and (b) shall be indemnified by the Registrant against all expenses
(including attorneys' fees) and amounts paid in settlement incurred in
connection with any action by or in the right of the Registrant brought against
him by virtue of his position as director or officer of the Registrant if he
acted in good faith and in a manner he reasonably believed to be in, or not
opposed to, the best interests of the Registrant, except that no indemnification
shall be made with respect to any matter as to which such person



                                      II-1


<PAGE>
shall have been adjudged to be liable to the Registrant, unless a court
determines that, despite such adjudication but in view of all of the
circumstances, he is entitled to indemnification of such expenses.
Notwithstanding the foregoing, to the extent that a director or officer has been
successful, on the merits or otherwise, including, without limitation, the
dismissal of an action without prejudice, he is required to be indemnified by
the Registrant against all expenses (including attorneys' fees) incurred in
connection therewith. Expenses shall be advanced to a director or officer at his
request, provided that he undertakes to repay the amount advanced if it is
ultimately determined that he is not entitled to indemnification for such
expenses.

            Indemnification is required to be made unless the Registrant
determines that the applicable standard of conduct required for indemnification
has not been met. In the event of a determination by the Registrant that the
director or officer did not meet the applicable standard of conduct required for
indemnification, or if the Registrant fails to make a indemnification payment
within 60 days after such payment is claimed by such person, such person is
permitted to petition the court to make an independent determination as to
whether such person is entitled to indemnification. As a condition precedent to
the right of indemnification, the director or officer must give the Registrant
notice of the action for which indemnity is sought and the Registrant has the
right to participate in such action or assume the defense thereof.

            Section 145 of the DGCL provides that a corporation has the power to
indemnify a director, officer, employee or agent of the corporation and certain
other persons serving at the request of the corporation in related capacities
against amounts paid and expenses incurred in connection with an action or
proceeding to which he is or is threatened to be made a party by reason of such
position, if such person shall have acted in good faith and in a manner he
reasonably believed to be in or not opposed to the best interests of the
corporation, and, in any criminal proceeding, if such person had no reasonable
cause to believe his conduct was unlawful; provided that, in the case of actions
brought by or in the right of the corporation, no indemnification shall be made
with respect to any matter as to which such person shall have been adjudged to
be liable to the corporation unless and only to the extent that the adjudicating
court determines that such indemnification is proper under the circumstances.

ITEM 7. EXEMPTION FROM REGISTRATION CLAIMED.

            None

ITEM 8. EXHIBITS.

            4(a)     -       Amended and Restated Certificate of
                             Incorporation filed with the Secretary of
                             State of the State of Delaware on August 4,
                             1998 (incorporated by reference to Exhibit
                             3.1 of the Company's Quarterly Report on
                             Form 10-Q for the fiscal quarter ended June
                             30, 1998).

            4(b)     -       Amended & Restated By-Laws adopted on July
                             9, 1998 and effective as of August 4, 1998
                             (incorporated by reference to Exhibit 3.6 of
                             Amendment No. 1 to the Company's
                             Registration Statement on Form S-1 (No. 333-
                             52899), dated as of July 7, 1998 ("Amendment
                             No. 1")).

            4(c)     -       Giga Information Group, Inc. 1995 Stock
                             Option/Stock Issuance Plan (incorporated by
                             reference to Exhibit 10.20 to Amendment No.
                             1).

            5        -       Opinion of Weil, Gotshal & Manges LLP.

            23(a)    -       Consent of PricewaterhouseCoopers LLP.

            23(b)    -       Consent of Weil, Gotshal & Manges LLP
                             (included in Exhibit 5).



                                      II-2


<PAGE>
            24       -    Power of Attorney (included as part of the signature
                          page to this Registration Statement and incorporated
                          herein by reference).

ITEM 9. UNDERTAKINGS.

      (a)   The undersigned registrant hereby undertakes:

            (1)   To file, during any period in which offers or sales are being
                  made, a post-effective amendment to this Registration
                  Statement;

                  (i)   To include any prospectus required by Section 10(a)(3) 
                        of the Securities Act;

                  (ii)  To reflect in the prospectus any facts or events arising
                        after the effective date of the Registration Statement
                        (or the most recent post-effective amendment thereof)
                        which, individually or in the aggregate, represent a
                        fundamental change in the information set forth in the
                        Registration Statement;

                  (iii) To include any material information with respect to the
                        plan of distribution not previously disclosed in the
                        Registration Statement or any material change to such
                        information in the Registration Statement;

            provided, however, that paragraph (a)(1)(i) and (a)(1)(ii) do not
            apply if the information required to be included in a post-effective
            amendment by the foregoing paragraphs is contained in periodic
            reports filed with or furnished to the Commission by the Registrant
            pursuant to Section 13 or Section 15(d) of the Exchange Act that are
            incorporated by reference in the Registration Statement.

            (2)   That, for the purpose of determining any liability under the
                  Securities Act, each such post-effective amendment shall be
                  deemed to be a new Registration Statement relating to the
                  securities offered therein, and the offering of such
                  securities at that time shall be deemed to be the initial bona
                  fide offering thereof.

            (3)   To remove from registration by means of a post-effective
                  amendment any of the securities being registered which remain
                  unsold at the termination of the offering.

      (b)   The undersigned registrant hereby undertakes that, for purposes of
            determining any liability under the Securities Act, each filing of
            the registrant's annual report pursuant to Section 13(a) or Section
            15(d) of the Exchange Act that is incorporated by reference in the
            Registration Statement shall be deemed to be a new Registration
            Statement relating to the securities offered therein, and the
            offering of such securities at that time shall be deemed to be the
            initial bona fide offering thereof.

      (c)   Insofar as indemnification for liabilities arising under the
            Securities Act may be permitted to directors, officers and
            controlling persons of the registrant pursuant to the foregoing
            provi- sions, or otherwise, the registrant has been advised that in
            the opinion of the Securities and Exchange Commission such
            indemnification is against public policy as expressed in the
            Securities Act and is, therefore, unenforceable. In the event that a
            claim for indemnification against such liabilities (other than the
            payment by the registrant of expenses incurred or paid by a
            director, officer or controlling person of the registrant in the
            successful defense of any action, suit or proceeding) is asserted by
            such director, officer or controlling person in connec- tion with
            the securities being registered, the registrant will, unless in the
            opinion of its counsel the matter has been settled by controlling
            precedent, submit to a court of appropriate juris-



                                      II-3
           

<PAGE>
            diction the question whether such indemnification by it is against
            public policy as expressed in the Securities Act and will be
            governed by the final adjudication of such issue.






                                      II-4


<PAGE>
                                   SIGNATURES


            Pursuant to the requirements of the Securities Act of 1933, the
registrant certifies that it has reasonable grounds to believe that it meets all
of the requirements for filing on Form S-8 and has duly caused this Registration
Statement to be signed on its behalf by the undersigned, thereunto duly
authorized in the City of New York, State of New York, on this 28th day of
September, 1998.

                              GIGA INFORMATION GROUP, INC.


                              By:  /s/ Gideon I. Gartner
                                   ---------------------------------------
                                   Name: Gideon I. Gartner
                                   Title: Chairman of the Board, President
                                          and Chief Executive Officer


                               POWER OF ATTORNEY

            KNOW ALL MEN BY THESE PRESENTS, that each person whose signature
appears below constitutes and appoints each of Gideon I. Gartner and Daniel M.
Clarke acting individually, his true and lawful attorney-in-fact and agent, with
full power of substitution and resubstitution, for him and in his name, place
and stead, in any and all capacities, to sign any and all amendments to this
Registration Statement, and to file the same, with all exhibits thereto, and
other documents in connection therewith, with the Securities and Exchange
Commission, granting unto said attorney-in-fact and agent full power and
authority to do and perform each and every act and thing requisite and necessary
to be done in and about the premises, as fully to all intents and purposes as he
might or could do in person, hereby ratifying and confirming all that said
attorney-in-fact and agent, or his substitute or substitutes, may lawfully do or
cause to be done by virtue hereof.

            Pursuant to the requirements of the Securities Act of 1933, this
Registration Statement has been signed by the following persons in the
capacities and on the date indicated.

Signature                              Title                         Date
---------                              -----                         ----

/s/ Gideon I. Gartner         Chairman of the Board of       September 28, 1998
---------------------------   Directors, President and
Gideon I. Gartner             Chief Executive Officer
                              (Principal Executive Officer)
                              

/s/ Daniel M. Clarke          Senior Vice President,         September 28, 1998
---------------------------   Chief Financial Officer,
Daniel M. Clarke              Treasurer and Secretary
                              (Principal Financial and
                              Accounting Officer)
                              

/s/ Neill H. Brownstein       Director                       September 28, 1998
---------------------------
Neill H. Brownstein






                                    II-5
                 
<PAGE>

Signature                              Title                         Date
---------                              -----                         ----

/s/ Richard L. Crandall                Director              September 28, 1998
---------------------------
Richard L. Crandall                                         


/s/ David L. Gilmour                   Director              September 28, 1998
---------------------------
David L. Gilmour


/s/ Bernard Goldstein                  Director              September 28, 1998
---------------------------
Bernard Goldstein


/s/ Irwin Lieber                       Director              September 28, 1998
---------------------------
Irwin Lieber


/s/ Josh S. Weston                     Director              September 28, 1998
---------------------------
Josh S. Weston







                                      II-6



<PAGE>
                                  EXHIBIT INDEX


      EXHIBIT NO.                 DESCRIPTION                         PAGE NO.
      -----------                 -----------                         --------


              4(a)  -   Amended and Restated Certificate of Incorporation filed
                        with the Secretary of State of the State of Delaware on
                        August 4, 1998 (incorporated by reference to Exhibit 3.1
                        of the Company's Quarterly Report on Form 10-Q for the
                        fiscal quarter ended June 30, 1998).

              4(b)  -   Amended & Restated By-Laws adopted on July 19, 1998 and
                        effective as of August 4, 1998 (incorporated by
                        reference to Exhibit 3.6 of Amendment No. 1 to the
                        Company's Registration Statement on Form S-1 (No.
                        333-52899), dated as of July 7, 1998 ("Amendment No.
                        1")).

              4(c)  -   Giga Information Group, Inc. 1995 Stock Option/Stock
                        Issuance Plan (incorporated by reference to Exhibit
                        10.20 to Amendment No. 1).

              5     -   Opinion of Weil, Gotshal & Manges LLP.

              23(a) -   Consent of PricewaterhouseCoopers LLP.

              23(b) -   Consent of Weil, Gotshal & Manges LLP (included in
                        Exhibit 5).

              24    -   Power of Attorney (included as part of the signature
                        page to this Registration Statement and incorporated
                        herein by reference).





                                      II-7
[{"type": "S-8", "sequence": "1", "secsgml_size_bytes": 23073}]
{"company-data": {"conformed-name": "GIGA INFORMATION GROUP INC", "cik": "0000948263", "assigned-sic": "8700", "irs-number": "061422860", "state-of-incorporation": "DE", "fiscal-year-end": "1231"}, "filing-values": {"form-type": "S-8", "act": "33", "file-number": "333-64411", "film-number": "98716082"}, "business-address": {"street1": "1 LONG WATER CIRCLE", "street2": "BLDG 1400 W", "city": "NORWELL", "state": "MA", "zip": "02061", "phone": "7819829500"}, "mail-address": {"street1": "ONE LONGWATER CIRCLE", "city": "NORWELL", "state": "MA", "zip": "02061"}}
As filed with the Securities and Exchange Commission on September 28, 1998
                                                           Registration No. 333-
================================================================================
                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549

                                ----------------

                                    FORM S-8
                             REGISTRATION STATEMENT
                                      UNDER
                           THE SECURITIES ACT OF 1933

                                 -------------

                          GIGA INFORMATION GROUP, INC.
             (Exact Name of Registrant as Specified in its Charter)

           DELAWARE                                      06-1422860
(State or Other Jurisdiction of           (I.R.S. Employer Identification No.)
Incorporation or Organization)

                              ONE LONGWATER CIRCLE
                          NORWELL, MASSACHUSETTS 02061
                                 (781) 982-9500
               (Address, Including Zip Code, and Telephone Number,
        including Area Code, of Registrant's Principal Executive Offices)

                          GIGA INFORMATION GROUP, INC.
                      1995 STOCK OPTION/STOCK ISSUANCE PLAN

                              (Full Title of Plan)

                                GIDEON I. GARTNER
                      CHIEF EXECUTIVE OFFICER AND PRESIDENT
                          GIGA INFORMATION GROUP, INC.
                              ONE LONGWATER CIRCLE
                          NORWELL, MASSACHUSETTS 02061
                                 (781) 982-9500
                     (Name and Address, Including Zip Code,
        and Telephone Number, Including Area Code, of Agent For Service)

                                   Copies to:

                             GERALD S. BACKMAN, P.C.
                           WEIL, GOTSHAL & MANGES, LLP
                                767 FIFTH AVENUE
                            NEW YORK, NEW YORK 10153
                                 (212) 310-8000

                         CALCULATION OF REGISTRATION FEE
====================================================================================================================================
 Title of Each Class of Securities to be      Amount to be         Proposed Maximum       Proposed Maximum          Amount of
               Registered                     Registered(1)       Offering Price Per     Aggregate Offering      Registration Fee
                                                                       Share(2)               Price(2)
------------------------------------------------------------------------------------------------------------------------------------
Common Stock, par value $.001 per share          831,389                 $5.00               $4,156,945             $1,226.30
====================================================================================================================================
(1) Plus such indeterminate number of shares of Common Stock of the Registrant
as may be issued to prevent dilution resulting from stock dividends, stock
splits or similar transactions in accordance with Rule 416 under the Securities
Act of 1933. 
(2) Estimated solely for purposes of calculating the registration fee pursuant 
to Rule 457 of the Securities Act of 1933.
====================================================================================================================================
NYFS07...:\54\47954\0009\2579\FRM8218M.170
PART I

              INFORMATION REQUIRED IN THE SECTION 10(A) PROSPECTUS

ITEM 1.

            The documents containing the information specified in Part I of this
Registration Statement will be sent or given to employees as specified by Rule
428(b)(1). Such documents are not required to be and are not filed with the
Securities and Exchange Commission (the "Commission") either as part of this
Registration Statement or as prospectuses or prospectus supplements pursuant to
Rule 424. These documents and the documents incorporated by reference in this
Registration Statement pursuant to Item 3 of Part II of this Form S-8, taken
together, constitute a prospectus that meets the requirements of Section 10(a)
of the Securities Act of 1933, as amended (the "Securities Act").

ITEM 2.

            Upon written or oral request, any of the documents incorporated by
reference in Item 3 of Part II of this Registration Statement (which documents
are incorporated by reference in this Section 10(a) Prospectus), other documents
required to be delivered to eligible employees pursuant to Rule 428(b) or
additional information about the Giga Information Group, Inc. 1995 Stock
Option/Stock Issuance Plan are available without charge by contacting:

                         Giga Information Group, Inc.
                             One Longwater Circle
                         Norwell, Massachusetts 02061
                                (781) 982-9500

                         Attention: Daniel M. Clarke
                Senior Vice President, Chief Financial Officer

                                       I-1
PART II

               INFORMATION REQUIRED IN THE REGISTRATION STATEMENT

ITEM 3. INCORPORATION OF DOCUMENTS BY REFERENCE.

            The following documents filed with the Commission by Giga
Information Group, Inc. (the "Company" or the "Registrant") are incorporated
herein by reference:

            (a) The Company's Quarterly Report on Form 10-Q for the fiscal
quarter ended June 30, 1998.

            (b) The Company's Report on Form 8-K dated August 13, 1998.

            (c) The description of the Company's Common Stock contained in the
Company's Registration Statement on Form 8-A filed with the Commission pursuant
to Section 12 of the Securities Exchange Act of 1934, as amended (the "Exchange
Act"), on July 28, 1998, including any amendment or report filed for the purpose
of updating such description.

            All documents subsequently filed by the Company with the Commission
pursuant to Sections 13(a), 13(c), 14 and 15(d) of the Exchange Act, prior to
the filing of a post-effective amendment to this Registration Statement which
indicates that all securities offered have been sold or which deregisters all
securities then remaining unsold, shall be deemed to be incorporated by
reference in this Registration Statement and to be a part hereof from the date
of filing of such documents.

ITEM 4. DESCRIPTION OF SECURITIES.

            Not applicable

ITEM 5. INTERESTS OF NAMED EXPERTS AND COUNSEL.

            Not applicable.

ITEM 6. INDEMNIFICATION OF DIRECTORS AND OFFICERS.

            Article Seven of the Registrant's Amended and Restated Certificate
of Incorporation (the "Restated Certificate") provides that no director of the
Registrant shall be personally liable for any monetary damages for any breach of
fiduciary duty as a director, except to the extent that the Delaware General
Corporation Law (the "DGCL") prohibits the elimination or limitation of
liability of directors for breach of fiduciary duty.

            Article Eight of the Restated Certificate provides that a director
or officer of the Registrant (a) shall be indemnified by the Registrant against
all expenses (including attorneys' fees), judgments, fines and amounts paid in
settlement incurred in connection with any litigation or other legal proceeding
(other than an action by or in the right of the Registrant) brought against him
by virtue of his position as a director or officer of the Registrant if he acted
in good faith and in a manner he reasonably believed to be in, or not opposed
to, the best interests of the Registrant, and, with respect to any criminal
action or proceeding, had no reasonable cause to believe his conduct was
unlawful and (b) shall be indemnified by the Registrant against all expenses
(including attorneys' fees) and amounts paid in settlement incurred in
connection with any action by or in the right of the Registrant brought against
him by virtue of his position as director or officer of the Registrant if he
acted in good faith and in a manner he reasonably believed to be in, or not
opposed to, the best interests of the Registrant, except that no indemnification
shall be made with respect to any matter as to which such person

                                      II-1
shall have been adjudged to be liable to the Registrant, unless a court
determines that, despite such adjudication but in view of all of the
circumstances, he is entitled to indemnification of such expenses.
Notwithstanding the foregoing, to the extent that a director or officer has been
successful, on the merits or otherwise, including, without limitation, the
dismissal of an action without prejudice, he is required to be indemnified by
the Registrant against all expenses (including attorneys' fees) incurred in
connection therewith. Expenses shall be advanced to a director or officer at his
request, provided that he undertakes to repay the amount advanced if it is
ultimately determined that he is not entitled to indemnification for such
expenses.

            Indemnification is required to be made unless the Registrant
determines that the applicable standard of conduct required for indemnification
has not been met. In the event of a determination by the Registrant that the
director or officer did not meet the applicable standard of conduct required for
indemnification, or if the Registrant fails to make a indemnification payment
within 60 days after such payment is claimed by such person, such person is
permitted to petition the court to make an independent determination as to
whether such person is entitled to indemnification. As a condition precedent to
the right of indemnification, the director or officer must give the Registrant
notice of the action for which indemnity is sought and the Registrant has the
right to participate in such action or assume the defense thereof.

            Section 145 of the DGCL provides that a corporation has the power to
indemnify a director, officer, employee or agent of the corporation and certain
other persons serving at the request of the corporation in related capacities
against amounts paid and expenses incurred in connection with an action or
proceeding to which he is or is threatened to be made a party by reason of such
position, if such person shall have acted in good faith and in a manner he
reasonably believed to be in or not opposed to the best interests of the
corporation, and, in any criminal proceeding, if such person had no reasonable
cause to believe his conduct was unlawful; provided that, in the case of actions
brought by or in the right of the corporation, no indemnification shall be made
with respect to any matter as to which such person shall have been adjudged to
be liable to the corporation unless and only to the extent that the adjudicating
court determines that such indemnification is proper under the circumstances.

ITEM 7. EXEMPTION FROM REGISTRATION CLAIMED.

            None

ITEM 8. EXHIBITS.

            4(a)     -       Amended and Restated Certificate of
                             Incorporation filed with the Secretary of
                             State of the State of Delaware on August 4,
                             1998 (incorporated by reference to Exhibit
                             3.1 of the Company's Quarterly Report on
                             Form 10-Q for the fiscal quarter ended June
                             30, 1998).

            4(b)     -       Amended & Restated By-Laws adopted on July
                             9, 1998 and effective as of August 4, 1998
                             (incorporated by reference to Exhibit 3.6 of
                             Amendment No. 1 to the Company's
                             Registration Statement on Form S-1 (No. 333-
                             52899), dated as of July 7, 1998 ("Amendment
                             No. 1")).

            4(c)     -       Giga Information Group, Inc. 1995 Stock
                             Option/Stock Issuance Plan (incorporated by
                             reference to Exhibit 10.20 to Amendment No.
                             1).

            5        -       Opinion of Weil, Gotshal & Manges LLP.

            23(a)    -       Consent of PricewaterhouseCoopers LLP.

            23(b)    -       Consent of Weil, Gotshal & Manges LLP
                             (included in Exhibit 5).

                                      II-2
24       -    Power of Attorney (included as part of the signature
                          page to this Registration Statement and incorporated
                          herein by reference).

ITEM 9. UNDERTAKINGS.

      (a)   The undersigned registrant hereby undertakes:

            (1)   To file, during any period in which offers or sales are being
                  made, a post-effective amendment to this Registration
                  Statement;

                  (i)   To include any prospectus required by Section 10(a)(3) 
                        of the Securities Act;

                  (ii)  To reflect in the prospectus any facts or events arising
                        after the effective date of the Registration Statement
                        (or the most recent post-effective amendment thereof)
                        which, individually or in the aggregate, represent a
                        fundamental change in the information set forth in the
                        Registration Statement;

                  (iii) To include any material information with respect to the
                        plan of distribution not previously disclosed in the
                        Registration Statement or any material change to such
                        information in the Registration Statement;

            provided, however, that paragraph (a)(1)(i) and (a)(1)(ii) do not
            apply if the information required to be included in a post-effective
            amendment by the foregoing paragraphs is contained in periodic
            reports filed with or furnished to the Commission by the Registrant
            pursuant to Section 13 or Section 15(d) of the Exchange Act that are
            incorporated by reference in the Registration Statement.

            (2)   That, for the purpose of determining any liability under the
                  Securities Act, each such post-effective amendment shall be
                  deemed to be a new Registration Statement relating to the
                  securities offered therein, and the offering of such
                  securities at that time shall be deemed to be the initial bona
                  fide offering thereof.

            (3)   To remove from registration by means of a post-effective
                  amendment any of the securities being registered which remain
                  unsold at the termination of the offering.

      (b)   The undersigned registrant hereby undertakes that, for purposes of
            determining any liability under the Securities Act, each filing of
            the registrant's annual report pursuant to Section 13(a) or Section
            15(d) of the Exchange Act that is incorporated by reference in the
            Registration Statement shall be deemed to be a new Registration
            Statement relating to the securities offered therein, and the
            offering of such securities at that time shall be deemed to be the
            initial bona fide offering thereof.

      (c)   Insofar as indemnification for liabilities arising under the
            Securities Act may be permitted to directors, officers and
            controlling persons of the registrant pursuant to the foregoing
            provi- sions, or otherwise, the registrant has been advised that in
            the opinion of the Securities and Exchange Commission such
            indemnification is against public policy as expressed in the
            Securities Act and is, therefore, unenforceable. In the event that a
            claim for indemnification against such liabilities (other than the
            payment by the registrant of expenses incurred or paid by a
            director, officer or controlling person of the registrant in the
            successful defense of any action, suit or proceeding) is asserted by
            such director, officer or controlling person in connec- tion with
            the securities being registered, the registrant will, unless in the
            opinion of its counsel the matter has been settled by controlling
            precedent, submit to a court of appropriate juris-

                                      II-3
diction the question whether such indemnification by it is against
            public policy as expressed in the Securities Act and will be
            governed by the final adjudication of such issue.

                                      II-4
SIGNATURES

            Pursuant to the requirements of the Securities Act of 1933, the
registrant certifies that it has reasonable grounds to believe that it meets all
of the requirements for filing on Form S-8 and has duly caused this Registration
Statement to be signed on its behalf by the undersigned, thereunto duly
authorized in the City of New York, State of New York, on this 28th day of
September, 1998.

                              GIGA INFORMATION GROUP, INC.

                              By:  /s/ Gideon I. Gartner
                                   ---------------------------------------
                                   Name: Gideon I. Gartner
                                   Title: Chairman of the Board, President
                                          and Chief Executive Officer

                               POWER OF ATTORNEY

            KNOW ALL MEN BY THESE PRESENTS, that each person whose signature
appears below constitutes and appoints each of Gideon I. Gartner and Daniel M.
Clarke acting individually, his true and lawful attorney-in-fact and agent, with
full power of substitution and resubstitution, for him and in his name, place
and stead, in any and all capacities, to sign any and all amendments to this
Registration Statement, and to file the same, with all exhibits thereto, and
other documents in connection therewith, with the Securities and Exchange
Commission, granting unto said attorney-in-fact and agent full power and
authority to do and perform each and every act and thing requisite and necessary
to be done in and about the premises, as fully to all intents and purposes as he
might or could do in person, hereby ratifying and confirming all that said
attorney-in-fact and agent, or his substitute or substitutes, may lawfully do or
cause to be done by virtue hereof.

            Pursuant to the requirements of the Securities Act of 1933, this
Registration Statement has been signed by the following persons in the
capacities and on the date indicated.

Signature                              Title                         Date
---------                              -----                         ----

/s/ Gideon I. Gartner         Chairman of the Board of       September 28, 1998
---------------------------   Directors, President and
Gideon I. Gartner             Chief Executive Officer
                              (Principal Executive Officer)
                              

/s/ Daniel M. Clarke          Senior Vice President,         September 28, 1998
---------------------------   Chief Financial Officer,
Daniel M. Clarke              Treasurer and Secretary
                              (Principal Financial and
                              Accounting Officer)
                              

/s/ Neill H. Brownstein       Director                       September 28, 1998
---------------------------
Neill H. Brownstein

                                    II-5
Signature                              Title                         Date
---------                              -----                         ----

/s/ Richard L. Crandall                Director              September 28, 1998
---------------------------
Richard L. Crandall                                         

/s/ David L. Gilmour                   Director              September 28, 1998
---------------------------
David L. Gilmour

/s/ Bernard Goldstein                  Director              September 28, 1998
---------------------------
Bernard Goldstein

/s/ Irwin Lieber                       Director              September 28, 1998
---------------------------
Irwin Lieber

/s/ Josh S. Weston                     Director              September 28, 1998
---------------------------
Josh S. Weston

                                      II-6
EXHIBIT INDEX

      EXHIBIT NO.                 DESCRIPTION                         PAGE NO.
      -----------                 -----------                         --------

              4(a)  -   Amended and Restated Certificate of Incorporation filed
                        with the Secretary of State of the State of Delaware on
                        August 4, 1998 (incorporated by reference to Exhibit 3.1
                        of the Company's Quarterly Report on Form 10-Q for the
                        fiscal quarter ended June 30, 1998).

              4(b)  -   Amended & Restated By-Laws adopted on July 19, 1998 and
                        effective as of August 4, 1998 (incorporated by
                        reference to Exhibit 3.6 of Amendment No. 1 to the
                        Company's Registration Statement on Form S-1 (No.
                        333-52899), dated as of July 7, 1998 ("Amendment No.
                        1")).

              4(c)  -   Giga Information Group, Inc. 1995 Stock Option/Stock
                        Issuance Plan (incorporated by reference to Exhibit
                        10.20 to Amendment No. 1).

              5     -   Opinion of Weil, Gotshal & Manges LLP.

              23(a) -   Consent of PricewaterhouseCoopers LLP.

              23(b) -   Consent of Weil, Gotshal & Manges LLP (included in
                        Exhibit 5).

              24    -   Power of Attorney (included as part of the signature
                        page to this Registration Statement and incorporated
                        herein by reference).

                                      II-7