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                       SECURITIES AND EXCHANGE COMMISSION
                              WASHINGTON, DC 20549

                                   FORM 12b-25

                           NOTIFICATION OF LATE FILING

                                                Commission File Number: 0-24443
                                                                        -------

(Check One)

/ /      Form 10-K and Form 10-KSB      / /   Form 11-K

/X/      Form 20-F      / /   Form 10-Q and Form 10-QSB        / /   Form N-SAR

For period ended:          September 30, 1998          
                 -----------------------------

/ /      Transition Report on Form 10-K and Form 10-KSB

/ /      Transition Report on Form 20-F

/ /      Transition Report on Form 11-K

/ /      Transition Report on Form 10-Q and Form 10-QSB

/ /      Transition Report on Form N-SAR

For the transition period ended
                               ------------------------------------------------

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: Financial Statements Footnote
entitled "Differences Between Canadian and United States Accounting Principles
and Practices."

                                     PART I
                             REGISTRANT INFORMATION

Full name of registrant    International Uranium Corporation             
                       --------------------------------------------------------

Former name if applicable           N/A                      
                         ------------------------------------------------------

Address of principal executive office (street and number) Independence Plaza,
Suite 950, 1050 Seventeenth Street
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City, state and zip code   Denver, Colorado  80265             
                        -------------------------------------------------------

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                                     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 box if appropriate)
[X]

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

(b)      The subject annual report, semi-annual report, transition report on
         Form 10-K, 10-KSB, 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 or transition report on Form
         10-Q, 10-QSB, 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 if applicable.

                                    PART III
                                    NARRATIVE

State below in reasonable detail the reasons why Form 10-K, 10-KSB, 11-K, 20-F,
10-Q, 10-QSB, N-SAR or the transition report portion thereof could not be filed
within the prescribed time period.

The Registrant has filed this Notification of Late Filing on Form 12b-25
regarding the required financial footnote disclosure entitled "Differences
Between Canadian and United States Accounting Principles and Practices" which
has not been included in its current annual report for the year ending September
30, 1998, filed on Form 20-F. The contents of this footnote are currently under
discussion with SEC staff in connection with the Registrant's Registration
Statement on Form 20-F. All other financial statement requirements have been
included in the 20-F filing.


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                                     PART IV
                                OTHER INFORMATION

(1)  Name and telephone number of person to contact in regard to this
     notification.

       Thad L. Meyer                                 (303) 628-7798            
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          (Name)                                (Area Code) (Telephone No.)

(2)  Have all other periodic reports required under Section 13 or 15(d) or 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.


                        International Uranium Corporation
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                  (Name of Registrant as Specified in Charter)

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

Date:     March 31, 1999             By:    /s/ Earl E.Hoellen       
       --------------------             ---------------------------------------
                                            Earl E. Hoellen, President and
                                            Chief Executive Officer