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

                                    FORM 6-K


       REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16
                   UNDER THE SECURITIES EXCHANGE ACT OF 1934


                                  August 2007

                       Commission File Number: 333-90736

                             WESTERN OIL SANDS INC.
             (Exact name of registrant as specified in its charter)


                        SUITE 2400, ERNST & YOUNG TOWER
                             440 SECOND AVENUE S.W.
                        CALGARY, ALBERTA, CANADA T2P 5E9
                                 (403) 223-1700
                    (Address of principal executive offices)


         Indicate  by check  mark  whether  the  registrant  files or will file
annual reports under cover Form 20-F or Form 40-F.

                         Form 20-F   [_]       Form 40-F  [X]

         Indicate by check mark if the registrant is submitting the Form 6-K in
paper as permitted by Regulation S-T Rule 101(b)(1): _________

         Note:  Regulation  S-T Rule  101(b)(1)  only permits the submission in
paper of a Form 6-K if submitted solely to provide an attached annual report to
security holders.

         Indicate by check mark if the registrant is submitting the Form 6-K in
paper as permitted by Regulation S-T Rule 101(b)(7): ________

         Note:  Regulation  S-T Rule  101(b)(7)  only permits the submission in
paper of a Form 6-K if submitted to furnish a report or other document that the
registrant  foreign  private issuer must furnish and make public under the laws
of the  jurisdiction  in which the  registrant  is  incorporated,  domiciled or
legally organized (the registrant's "home country"),  or under the rules of the
home country exchange on which the registrant's  securities are traded, as long
as the report or other document is not a press  release,  is not required to be
and has not been  distributed to the  registrant's  security  holders,  and, if
discussing  a  material  event,  has  already  been the  subject  of a Form 6-K
submission or other Commission filing on EDGAR.

         Indicate  by check mark  whether  the  registrant  by  furnishing  the
information  contained in this Form is also thereby  furnishing the information
to the Commission  pursuant to Rule 12g3-2(b) under the Securities Exchange Act
of 1934.

                          Yes  [_]              No  [X]

         If "Yes" is marked,  indicate  below the file  number  assigned to the
registrant in connection with Rule 12g3-2(b): 82_________


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EXHIBIT NO.         DESCRIPTION
- -----------         -----------
  99.1              Western Oil Sands Inc. - Interim Report for the Three-Month
                    Period Ended June 30, 2007.






                               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, thereunto duly authorized.


                                     WESTERN OIL SANDS INC.


Date:    August 29, 2007             By: /s/ David A. Dyck
                                         ---------------------------
                                         Name:  David A. Dyck
                                         Title: Senior Vice President, Finance
                                                and Chief Financial Officer






                               EXHIBIT INDEX


EXHIBIT NO.         DESCRIPTION
- -----------         -----------
  99.1              Western Oil Sands Inc. - Interim Report for the Three-Month
                    Period Ended June 30, 2007.