<PAGE>

                                  UNITED STATES
                        SECURITES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                    FORM S-8

             REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933

                       ANALYSTS INTERNATIONAL CORPORATION
--------------------------------------------------------------------------------
             (Exact name of registrant as specified in its charter)

MINNESOTA                                                            41-0905-408
--------------------------------------------------------------------------------
(State or other jurisdiction of                                 (I.R.S. Employer
incorporation or organization)                               Identification No.)

3601 WEST 76TH STREET, MINNEAPOLIS, MN                                55435
--------------------------------------------------------------------------------
(Address of Principal Executive Offices)                            (Zip Code)

ANALYSTS INTERNATIONAL CORPORATION 1999 STOCK OPTION PLAN
--------------------------------------------------------------------------------
                            (Full title of the plan)

THOMAS R. MAHLER, 3601 WEST 76TH STREET, MINNEAPOLIS, MN  55435
--------------------------------------------------------------------------------
(Name and Address of agent for service)

                                  612/838-2911
--------------------------------------------------------------------------------
(Telephone number, including area code, of agent for service)

                                           CALCULATION OF REGISTRATION FEE
<TABLE>
<CAPTION>
======================== ====================== ====================== ====================== ======================
                                                Proposed maximum       Proposed maximum
Title of securities to   Amount to be           offering price per     aggregate offering     Amount of
be registered            registered             unit                   price                  registration fee
------------------------ ---------------------- ---------------------- ---------------------- ----------------------
<S>                      <C>                    <C>                    <C>                    <C>
Common stock             1,000,000              $11.125*               11,125,000*            $2,781.25
======================== ====================== ====================== ====================== ======================

</TABLE>

*Computed per Rule 457 based on high and low prices for April 20, 2000.

<PAGE>

                          INCORPORATION BY REFERENCE

     The contents of Registration Statement No. 33-87626 are incorporated in
this Registration Statement by reference.

          PART 2 - INFORMATION REQUIRED IN THE REGISTRATION STATEMENT

ITEM 3.  INCORPORATION OF DOCUMENTS BY REFERENCE.

     The following documents are incorporated in this Registration Statement by
reference:

     a.        Annual Report on Form 10-K for fiscal 1999, filed pursuant to
          Section 13(a) of the Securities Exchange Act of 1934;

     b.        All other reports filed pursuant to Section 13(a) or 15(d) of the
          Securities Exchange Act of 1934 since June 30, 1999.

     c.        Description of Common Stock as set forth as page 18 of the
          Company's Prospectus dated December 6, 1983, and included as part of
          its Registration Statement on Form S-2 (File No. 2-87040).

     All documents filed by the Company after the date of this prospectus
pursuant to Sections 13(a), 13(c) and 15(d) of the Securities Exchange Act of
1934, prior to the filing of the post-effective amendment 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 the related Prospectus and to be a part hereof from
the date of filing of such documents.

ITEM 6.  INDEMNIFICATION OF DIRECTORS AND OFFICERS.

     As permitted by Minnesota law, the Registrant's Bylaws require the
Registrant to indemnify its directors and officers against claims made against
them in their capacities as such, together with their defense expenses, as long
as they acted in good faith, received no improper personal benefit, had no
reasonable cause to believe the conduct was unlawful (in the case of a criminal
proceeding) and reasonably believed that they were acting in the Registrant's
best interests. The Registrant has purchased directors' and officers' liability
coverage for this risk, as permitted by the Bylaws.


                                       S-1

<PAGE>

ITEM 8.  EXHIBITS.

     4.        1999 Stock Option Plan, as amended. (Exhibit A to the
          Registrant's Definitive Proxy Statement dated September 13, 1999,
          Commission File No. 0-4090, incorporated by reference.)

     5.   Opinion of counsel

     25.  Powers of Attorney

ITEM 9.  UNDERTAKINGS.

     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 of 1933;

          (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; and

          (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.

     (2) That, for the purpose of determining any liability under the Securities
Act of 1933, 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.

     (4) That, for purposes of determining any liability under the Securities
Act of 1933, each filing of the registrant's annual report pursuant to section
13(a) or section 15(d) of the


                                       S-2

<PAGE>

Securities Exchange Act of 1934 (and, where applicable, each filing of an
employee benefit plan's annual report pursuant to section 15(d) of the
Securities Exchange Act of 1934) 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.

         (5) Insofar as indemnification for liabilities arising under the
Securities Act of 1933 may be permitted to directors, officers and controlling
persons of the registrant pursuant to the foregoing provisions, 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 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
connection 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 jurisdiction the question whether such
indemnification by it is against public policy as expressed in the Act and will
be governed by the final adjudication of such issue.


                                       S-3

<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 Minneapolis, State of Minnesota on March 30, 2000.

                                ANALYSTS INTERNATIONAL CORPORATION

                                By: /s/ F. W. Lang
                                   --------------------------------
                                   F.W. Lang, Chairman

     Pursuant to the requirements of the Securities Act of 1933, this report in
the capacities and on the dates indicated.

<TABLE>
<CAPTION>

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

<S>                        <C>                                                  <C>
/s/ F.W. Lang              Chairman & Chief Executive Officer                   March 30, 2000
----------------------     (Principal Executive Officer)
F.W. Lang

                           Vice President--Finance &
----------------------     Treasurer
M. Charpentier

*                          Director
----------------------
V.C. Benda

*                          Director
----------------------
W.K. Drake

*                          Director
----------------------
E.M. Mahoney

*                          Director
----------------------
Margaret Loftus

*                          Director
----------------------
Robb Prince

</TABLE>

*F.W. Lang, by signing his name hereto, hereby signs this Registration Statement
on Form S-8 on behalf of the persons indicated pursuant to powers of attorney
filed herewith.

                                              /s/ F.W. Lang
                                              ----------------------
                                              F.W. Lang, Chairman


                                       S-4

<PAGE>

                                  EXHIBIT INDEX

<TABLE>
<CAPTION>

Exhibit No.                Description                                 Page No.*
-----------                -----------                                 ---------

<S>                        <C>
      4                    1999 Stock Option Plan, as amended. (Exhibit A to the
                           Registrant's Definitive Proxy Statement dated
                           September 13, 1999, Commission File No. 0-4090,
                           incorporated by reference.)

      5                    Opinion of counsel

      25                   Powers of Attorney

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

</TABLE>

* Page number in the sequential numbering system.


                                       S-5
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UNITED STATES
                        SECURITES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                    FORM S-8

             REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933

                       ANALYSTS INTERNATIONAL CORPORATION
--------------------------------------------------------------------------------
             (Exact name of registrant as specified in its charter)

MINNESOTA                                                            41-0905-408
--------------------------------------------------------------------------------
(State or other jurisdiction of                                 (I.R.S. Employer
incorporation or organization)                               Identification No.)

3601 WEST 76TH STREET, MINNEAPOLIS, MN                                55435
--------------------------------------------------------------------------------
(Address of Principal Executive Offices)                            (Zip Code)

ANALYSTS INTERNATIONAL CORPORATION 1999 STOCK OPTION PLAN
--------------------------------------------------------------------------------
                            (Full title of the plan)

THOMAS R. MAHLER, 3601 WEST 76TH STREET, MINNEAPOLIS, MN  55435
--------------------------------------------------------------------------------
(Name and Address of agent for service)

                                  612/838-2911
--------------------------------------------------------------------------------
(Telephone number, including area code, of agent for service)

                                           CALCULATION OF REGISTRATION FEE
======================== ====================== ====================== ====================== ======================
                                                Proposed maximum       Proposed maximum
Title of securities to   Amount to be           offering price per     aggregate offering     Amount of
be registered            registered             unit                   price                  registration fee
------------------------ ---------------------- ---------------------- ---------------------- ----------------------
Common stock             1,000,000              $11.125*               11,125,000*            $2,781.25
======================== ====================== ====================== ====================== ======================
*Computed per Rule 457 based on high and low prices for April 20, 2000.
INCORPORATION BY REFERENCE

     The contents of Registration Statement No. 33-87626 are incorporated in
this Registration Statement by reference.

          PART 2 - INFORMATION REQUIRED IN THE REGISTRATION STATEMENT

ITEM 3.  INCORPORATION OF DOCUMENTS BY REFERENCE.

     The following documents are incorporated in this Registration Statement by
reference:

     a.        Annual Report on Form 10-K for fiscal 1999, filed pursuant to
          Section 13(a) of the Securities Exchange Act of 1934;

     b.        All other reports filed pursuant to Section 13(a) or 15(d) of the
          Securities Exchange Act of 1934 since June 30, 1999.

     c.        Description of Common Stock as set forth as page 18 of the
          Company's Prospectus dated December 6, 1983, and included as part of
          its Registration Statement on Form S-2 (File No. 2-87040).

     All documents filed by the Company after the date of this prospectus
pursuant to Sections 13(a), 13(c) and 15(d) of the Securities Exchange Act of
1934, prior to the filing of the post-effective amendment 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 the related Prospectus and to be a part hereof from
the date of filing of such documents.

ITEM 6.  INDEMNIFICATION OF DIRECTORS AND OFFICERS.

     As permitted by Minnesota law, the Registrant's Bylaws require the
Registrant to indemnify its directors and officers against claims made against
them in their capacities as such, together with their defense expenses, as long
as they acted in good faith, received no improper personal benefit, had no
reasonable cause to believe the conduct was unlawful (in the case of a criminal
proceeding) and reasonably believed that they were acting in the Registrant's
best interests. The Registrant has purchased directors' and officers' liability
coverage for this risk, as permitted by the Bylaws.

                                       S-1
ITEM 8.  EXHIBITS.

     4.        1999 Stock Option Plan, as amended. (Exhibit A to the
          Registrant's Definitive Proxy Statement dated September 13, 1999,
          Commission File No. 0-4090, incorporated by reference.)

     5.   Opinion of counsel

     25.  Powers of Attorney

ITEM 9.  UNDERTAKINGS.

     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 of 1933;

          (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; and

          (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.

     (2) That, for the purpose of determining any liability under the Securities
Act of 1933, 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.

     (4) That, for purposes of determining any liability under the Securities
Act of 1933, each filing of the registrant's annual report pursuant to section
13(a) or section 15(d) of the

                                       S-2
Securities Exchange Act of 1934 (and, where applicable, each filing of an
employee benefit plan's annual report pursuant to section 15(d) of the
Securities Exchange Act of 1934) 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.

         (5) Insofar as indemnification for liabilities arising under the
Securities Act of 1933 may be permitted to directors, officers and controlling
persons of the registrant pursuant to the foregoing provisions, 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 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
connection 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 jurisdiction the question whether such
indemnification by it is against public policy as expressed in the Act and will
be governed by the final adjudication of such issue.

                                       S-3
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 Minneapolis, State of Minnesota on March 30, 2000.

                                ANALYSTS INTERNATIONAL CORPORATION

                                By: /s/ F. W. Lang
                                   --------------------------------
                                   F.W. Lang, Chairman

     Pursuant to the requirements of the Securities Act of 1933, this report in
the capacities and on the dates indicated.
Signature                           Title                                               Date
---------                           -----                                               ----
/s/ F.W. Lang              Chairman & Chief Executive Officer                   March 30, 2000
----------------------     (Principal Executive Officer)
F.W. Lang

                           Vice President--Finance &
----------------------     Treasurer
M. Charpentier

*                          Director
----------------------
V.C. Benda

*                          Director
----------------------
W.K. Drake

*                          Director
----------------------
E.M. Mahoney

*                          Director
----------------------
Margaret Loftus

*                          Director
----------------------
Robb Prince
*F.W. Lang, by signing his name hereto, hereby signs this Registration Statement
on Form S-8 on behalf of the persons indicated pursuant to powers of attorney
filed herewith.

                                              /s/ F.W. Lang
                                              ----------------------
                                              F.W. Lang, Chairman

                                       S-4
EXHIBIT INDEX
Exhibit No.                Description                                 Page No.*
-----------                -----------                                 ---------
4                    1999 Stock Option Plan, as amended. (Exhibit A to the
                           Registrant's Definitive Proxy Statement dated
                           September 13, 1999, Commission File No. 0-4090,
                           incorporated by reference.)

      5                    Opinion of counsel

      25                   Powers of Attorney

-----------------------------
* Page number in the sequential numbering system.

                                       S-5