SECURITIES AND EXCHANGE COMMISSION
                              WASHINGTON, DC 20549

                                   FORM 12b-25

                                                Commission File Number 001-12673

                           NOTIFICATION OF LATE FILING



(Check One):               |X| Form 10-K    |_| Form 11-K     |_| Form 20-F     |_| Form 10-Q    |_| Form N-SAR
For Period Ending: August 31, 2006
         |_| Transition Report on Form 10-K                            |_| Transition Report on Form 10-Q
         |_| Transition Report on Form 20-F                            |_| Transition Report on Form N-SAR
         |_| Transition Report on Form 11-K


                      Read the attached instruction sheet before preparing form.
Please print or type.

         Nothing in this form shall be construed to imply that the Commission
has verified any information contained herein. If the notification relates to a
portion of the filing checked above, identify the Item(s) to which the
notification relates:

                                               Part I.  Registrant Information

Full name of registrant:             Riviera Tool Company
                                     --------------------

Former name if applicable:          n/a

Address of principal  executive office (Street and number):  5460 Executive
Parkway, SE

City, State and Zip Code:           Grand Rapids, Michigan 49512

                         Part II. Rule 12b-25(b) and (c)
         If the subject report could not be filed without unreasonable effort or
expense and the registrant seeks relief pursuant to Rule 12b-25(b), the
following should be completed. (Check appropriate box.)

|X|      (a) The reasons described in reasonable detail in Part III of this form
         could not be eliminated without unreasonable effort or expense;

|X|      (b) The subject annual report, semi-annual report, transition report on
         Form 10-K, 20-F, 11-K or Form N-SAR, or portion thereof will be filed
         on or before the 15th calendar day following the prescribed due date;
         or the subject quarterly report on transition report on Form 10-Q, or
         portion thereof will be filed on or before the fifth calendar day
         following the prescribed due date; and

|_|      (c) The accountant's statement or other exhibit required by
         Rule 12b-25(c) has been attached is applicable.

                               Part III. Narrative
         State below in reasonable detail the reasons why Form 10-K, 11-K, 20-F,
10-Q, N-SAR or the transition report portion thereof could not be filed within
the prescribed time period. (Attached extra sheets if needed.)

The registrant's Annual Report on Form 10-K for the fiscal year ended August 31,
2006 cannot be filed within the prescribed time period because the registrant is
experiencing delays in the collection of certain information required to be
included in the Form 10-K. The registrant's Annual Report on Form 10-K will be
filed as soon as practicable, but in no event later than the fifteenth calendar
day following the prescribed due date.






                           Part IV. Other Information




         (1)      Name and telephone number of person to contact in regard to this notification
---------------------------------------------------------------------------- -------------------- --------------------------
                             Kenneth K. Rieth                                       (616)                 698-2100
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                                  (Name)                                         (Area Code)         (Telephone Number)
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         (2) Have all other periodic reports required under Section 13 or 15(d)
of the Securities Exchange Act of 1934 or Section 30 of the Investment Company
Act of 1940 during the preceding 12 months or for such shorter period that the
registrant was required to file such report(s) been filed? If the answer is no,
identify report(s).
                                                                                                           |X|Yes    |_| No
         (3) Is it anticipated that any significant change in results of
operations from the corresponding period for the last fiscal year will be
reflected by the earnings statements to be included in the subject report or
portion thereof?
                                                                                                          |_| Yes     |X|No
         If so: attach an explanation of the anticipated change, both
narratively and quantitatively, and, if appropriate, state the reasons why a
reasonable estimate of the results cannot be made.

                                                   Riviera Tool Company

                                        (Name of registrant as specified in charter)

has caused this notification to be signed on its behalf by the undersigned thereunto duly authorized.

Date    November 29, 2006                                           By      /s/  Peter C. Canepa
        ----------------------------------------------------------     --------------------------------------------

                                                              Name:  Peter C. Canepa
                                                              Title:   Chief Financial Officer



                  Instruction. The form may be signed by an executive officer of
         the registrant or by any other duly authorized representative. The name
         and title of the person signing the form shall be type or printed
         beneath the signature. If the statement is signed on behalf of the
         registrant by an authorized representative (other than an executive
         officer), evidence of the representative's authority to sign on behalf
         of the registrant shall be filed with the form.

                                    ATTENTION

   Intentional misstatements or omissions of fact constitute Federal criminal
                        violations (see 18 U.S.C. 1001)

                              GENERAL INSTRUCTIONS

         1.  This form is required by Rule 12b-25 of the General Rules and
Regulations under the Securities Exchange Act of 1934.

         2. One signed original and four conformed copies of this form and
amendments thereto must be completed and filed with the Securities and Exchange
Commission, Washington, D.C. 20549, in accordance with Rule 0-3 of the General
Rules and Regulations under the Act. The information contained in or filed with
the form will be made a matter of public record in the Commission files.

         3. A manually signed copy of the form and amendments thereto shall be
filed with each national securities exchange on which any class of securities of
the registrant is registered.

         4. Amendments to the notifications must also be filed on Form 12b-25
but need not restate information that has been correctly furnished. The form
shall be clearly identified as an amended notification.

         5. Electronic Filers. This form shall not be used by electronic filers
unable to timely file a report solely due to electronic difficulties. Filers
unable to submit a report within the time period prescribed due to difficulties
in electronic filing should comply with either Rule 201 or Rule 202 of
Regulation S-T or apply for an adjustment in filing date pursuant to Rule 13(b)
of Regulation S-T.