Filed pursuant to Rule 424(b)(3)
                                                      Registration No. 333-91254

PROSPECTUS SUPPLEMENT NO. 3 DATED AUGUST 6, 2003
TO PROSPECTUS DATED SEPTEMBER 19, 2002

                                VISTA GOLD CORP.

                             7,999,974 Common Shares
                                without par value

      You should read this prospectus supplement together with our prospectus
dated September 19, 2002, which is to be delivered with this prospectus
supplement.

      INVESTING IN OUR COMMON SHARES INVOLVES A HIGH DEGREE OF RISK. SEE "RISK
FACTORS" BEGINNING ON PAGE 2 OF THE PROSPECTUS TO READ ABOUT CERTAIN RISKS YOU
SHOULD CONSIDER BEFORE BUYING OUR COMMON SHARES.

      NEITHER THE SECURITIES AND EXCHANGE COMMISSION NOR ANY STATE SECURITIES
COMMISSION HAS APPROVED OR DISAPPROVED OF THESE SECURITIES OR PASSED UPON THE
ADEQUACY OR ACCURACY OF THIS PROSPECTUS. ANY REPRESENTATION TO THE CONTRARY IS A
CRIMINAL OFFENSE.

           The date of this prospectus supplement is August 6, 2003.


      The information in this prospectus supplement concerning the selling
security holders supersedes in part the information set forth under the caption
"Selling Security Holders" in the prospectus by deleting the information
contained in the table regarding the selling security holders with respect to
beneficial ownership of our common shares, as well as the paragraph immediately
preceding that table, and substituting therefor the following paragraphs and
table:

      On September 19, 2002, as discussed in the prospectus, the SEC declared
effective the registration statement of which this prospectus forms a part. As a
consequence, all of our $2,774,000 principal amount of convertible debentures
were automatically converted, pursuant to their terms, into debenture units at a
price of $1.026 per debenture unit. Each debenture unit consisted of one common
share and one 5-year warrant entitling the holder to purchase one common share
at a price of $1.50. Reflecting prior conversions of some of the convertible
debentures, we issued 2,485,370 common shares and the same number of warrants as
of the effective date of the registration statement.

      The following table sets forth, as of the date of this prospectus
supplement, the number of shares being held of record or beneficially by the
selling security holders as well as the remaining number of shares that may be
offered under this prospectus, and provides by footnote reference any material
relationship between Vista Gold and the selling security holder, all of which is
based upon information currently available to us.



-----------------------------------------------------------------------------------------------------------------------
                                                          Beneficial Ownership of               Beneficial Ownership of
                                                          Selling Security Holder                        Shares
                                                  As of Date of Prospectus Supplement (1)          After Offering (2)
                                                  ---------------------------------------          ------------------

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

                                                                               Remaining
                                                                               Number of
                                                                            Shares Offered
Name of Selling Security Holder                  Number (3)      Percent         Hereby           Number        Percent
-------------------------------                  ----------      -------         ------           ------        -------
-----------------------------------------------------------------------------------------------------------------------
                                                                                                  
Quest Capital Corp. (4)                          1,153,030         8.4%          850,000          303,030         2.3%
-----------------------------------------------------------------------------------------------------------------------
Global Resource Investments Ltd. (5)               275,820         2.1%          275,820                0           *
-----------------------------------------------------------------------------------------------------------------------
Robert Quartermain (6)                             220,564         1.7%          170,564           50,000           *
-----------------------------------------------------------------------------------------------------------------------
Silver Standard Resources Inc. (7)                 341,130         2.6%          341,130                0           *
-----------------------------------------------------------------------------------------------------------------------
PanAmerica Capital Group, Inc. (8)                 548,492         4.2%              350          548,142         4.2%
-----------------------------------------------------------------------------------------------------------------------
Douglas Casey (9)                                  162,465         1.3%           97,465           65,000           *
-----------------------------------------------------------------------------------------------------------------------
MDW & Associates, LLC (10)                          15,000           *             5,000           10,000           *
-----------------------------------------------------------------------------------------------------------------------
Exploration Capital Partners 2000 Limited        1,846,714        13.3%        1,846,714                0           *
Partnership (11)
-----------------------------------------------------------------------------------------------------------------------
Adventure Seekers Travel, Inc. (12)                 50,366           *            24,366           26,000           *
-----------------------------------------------------------------------------------------------------------------------
Susan C. van Eeden (13)                             24,493           *            19,493            5,000           *
-----------------------------------------------------------------------------------------------------------------------
Keith Presnell (14)                                126,479         1.0%           58,479           68,000           *
-----------------------------------------------------------------------------------------------------------------------
David Lyall (15)                                   140,428         1.1%           60,428           80,000           *
-----------------------------------------------------------------------------------------------------------------------
Middlemarch Partners Limited (16)                  100,428           *            60,428           40,000           *
-----------------------------------------------------------------------------------------------------------------------
Ross Beaty (17)                                    362,556         2.8%          120,856          241,700         1.9%
-----------------------------------------------------------------------------------------------------------------------
         TOTAL                                   5,387,965        32.6%        3,931,093        1,456,872        10.6%
-----------------------------------------------------------------------------------------------------------------------


*     Represents less than 1% of the outstanding common shares.

(1)   Applicable percentage of ownership is based on 12,761,287 common shares
      outstanding as of July 30, 2003, plus any securities held by such holder
      exercisable for or convertible into common shares within sixty (60) days
      after the date of this prospectus supplement, in accordance with Rule
      13d-3(d)(1) under the Securities Exchange


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      Act of 1934, as amended. Beneficial ownership information as of the
      commencement of the offering is contained in the original prospectus dated
      September 19, 2002.

(2)   Assumes in all cases that all shares are sold pursuant to this offering
      and that no other common shares are acquired or disposed of by the selling
      security holders prior to the termination of this offering. Because the
      selling security holders may sell all, some or none of their shares or may
      acquire or dispose of other common shares, we cannot estimate the
      aggregate number of shares which will be sold in this offering or the
      number or percentage of common shares that each selling security holder
      will own upon completion of this offering.

(3)   Unless otherwise noted, current ownership represents the total of common
      shares issued upon conversion of debentures on September 19, 2002 and
      common shares issuable upon exercise of warrants issued upon that
      debenture conversion, as updated to reflect sales or purchases of common
      shares since that date.

(4)   Quest Capital Corp. is the successor to Quest Investment Corporation
      pursuant to a merger with three other companies effected in June 2003.
      Quest Capital trades on the Toronto Stock Exchange. Quest Capital has
      outstanding two classes of equity securities: Class A Shares having one
      vote per share and Class B Shares currently having two votes per share but
      structured so as to increase to up to five votes per share based on
      additional share issuances. Class B Shares are convertible into Class A
      Shares on a one-for-one basis. A. Murray Sinclair, who was a director of
      Vista Gold until October 24, 2002, is Managing Director and a member of
      the Board of Directors of Quest Capital. Henry J. Knowles is Chairman and
      a director. Brian Bayley is President, Chief Executive Officer and a
      director. Entities affiliated with A. Richards Rule own in aggregate
      9,201,116 Class A Shares representing 11.7% of the outstanding Class A
      Shares and 898,840 Class B Shares representing 20.9% of the outstanding
      Class B Shares. They also hold 3,634,575 Class A Share purchase warrants
      which, if exercised, could increase their holdings in Quest Capital to
      12,835,691 Class A Shares, representing 15.6% of the then outstanding
      Class A Shares. The ownership is principally as follows: Exploration
      Capital Partners 2000 Limited Partnership, a Nevada limited partnership,
      owns 5,129,575 Class A Shares and 2,739,575 share purchase warrants. The
      Rule Family Trust u/d/t 12/17/98 owns 3,903,258 Class A Shares, 124,065
      Class B Shares and 895,000 share purchase warrants. The General Partner of
      Exploration Capital Partners 2000 is Resource Capital Investment Corp., a
      Nevada corporation that is 90% owned by the Rule Family Trust. A. Richards
      Rule is President and a Director of Resource Capital, and, with his wife,
      is co-Trustee of the Rule Family Trust. Ownership totals in table include:
      (i) 303,030 common shares issuable upon exercise of warrants acquired by
      Viceroy Resource Corporation (another predecessor entity to Quest Capital
      Corp.) in August 2002; and (ii) 150,000 remaining common shares and
      700,000 common shares issuable upon exercise of remaining warrants
      acquired by Stockscape.com Technologies Inc., a predecessor by merger to
      Quest Investment Corporation, in February 2002.

(5)   Global Resource Investments Ltd. is a private California partnership 100%
      owned by Rule Investments, Inc., which in turn is 100% owned by the Rule
      Family Trust u/d/t 12/17/98. A. Richards Rule is President and sole
      Director of Rule Investments, and, with his wife, is co-Trustee of the
      Rule Family Trust. On November 4, 2002, Global Resource distributed
      248,574 common shares to Rule Investments (which have since been sold) in
      connection with a corporate restructuring, and made compensatory
      distributions to the following selling security holders: 12,476 common
      shares to PanAmerica Capital Group, Inc., 30,799 common shares to Keith
      Presnell and 780 common shares to a beneficiary of The Howard Family
      Trust. Ownership totals include 72,000 common shares issuable upon
      exercise of remaining warrants acquired as an agency fee in February 2002
      private placement described above, as well as 203,820 common shares
      issuable upon exercise of remaining warrants acquired as an agency fee in
      March 2002 private placement described above.

(6)   Mr. Quartermain is a director of Vista Gold. Ownership totals include
      50,000 common shares issuable upon exercise of stock options, that are not
      being registered for inclusion in this offering.

(7)   Silver Standard Resources Inc. is a widely-held, publicly-traded Canadian
      corporation. Robert Quartermain, a director of Vista Gold, is President
      and a director of Silver Standard and is the beneficial owner of
      approximately 2% of its outstanding common shares. To the knowledge of
      Silver Standard management, no person beneficially owns 5% or more of its
      outstanding common shares.


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(8)   PanAmerica Capital Group, Inc., is a privately-held corporation based in
      Panama. Based on its filing with the Toronto Stock Exchange in connection
      with its purchase of convertible debentures from Vista Gold, its President
      is Patrick M. Abraham, and no person beneficially owns 10% or more of its
      outstanding equity. Ownership totals include 132,609 subsequently acquired
      common shares and 415,533 common shares issuable upon exercise of
      subsequently acquired warrants, that are not being registered for
      inclusion in this offering.

(9)   Ownership totals include 15,000 subsequently acquired common shares and
      50,000 common shares issuable upon exercise of subsequently acquired
      warrants, that are not being registered for inclusion in this offering.

(10)  MDW & Associates LLC is a privately-held limited liability company based
      in California. Based on its filing with the Toronto Stock Exchange in
      connection with its purchase of convertible debentures from Vista Gold,
      Michael D. Winn is a manager of the LLC, and each of Mr. Winn and Putney
      Holding Company, L.P. owns 10% or more of its outstanding equity. Further
      information as to Putney Holding Company, L.P. is not available. Ownership
      totals include 10,000 common shares issuable upon exercise of subsequently
      acquired warrants, that are not being registered for inclusion in this
      offering.

(11)  Exploration Capital Partners 2000 Limited Partnership is a Nevada limited
      partnership. Its General Partner is Resource Capital Investment Corp., a
      Nevada corporation which is 90% owned by the Rule Family Trust u/d/t
      12/17/98. A. Richards Rule is President and a Director of Resource
      Capital, and, with his wife, is co-Trustee of the Rule Family Trust.

(12)  Adventure Seekers Travel, Inc., is a privately-held corporation based in
      California. Based on its filing with the Toronto Stock Exchange in
      connection with its purchase of convertible debentures from Vista Gold,
      its President is Bryce W. Rhodes, and its controlling shareholders are Mr.
      Rhodes and Susan W. Rhodes. Ownership totals include 13,000 subsequently
      acquired common shares and 13,000 common shares issuable upon exercise of
      subsequently acquired warrants, that are not being registered for
      inclusion in this offering.

(13)  Ownership totals include 5,000 common shares issuable upon exercise of
      subsequently acquired warrants, that are not being registered for
      inclusion in this offering.

(14)  Ownership totals include 38,000 subsequently acquired common shares and
      30,000 common shares issuable upon exercise of subsequently acquired
      warrants, that are not being registered for inclusion in this offering.

(15)  Ownership totals include 40,000 subsequently acquired common shares and
      40,000 common shares issuable upon exercise of subsequently acquired
      warrants, that are not being registered for inclusion in this offering.

(16)  Middlemarch Partners Limited is a privately-held corporation based in the
      United Kingdom. Based on its filing with the Toronto Stock Exchange in
      connection with its purchase of convertible debentures from Vista Gold,
      Cecilia M. Kershaw is a managing director and authorized signatory, and
      Ms. Kershaw and Henry Tondowski are its controlling equityholders.
      Ownership totals include 40,000 common shares issuable upon exercise of
      subsequently acquired warrants, that are not being registered for
      inclusion in this offering.

(17)  Ownership totals include 161,700 previously acquired common shares that
      were not registered for inclusion in this offering, as well as 40,000
      subsequently acquired common shares and 40,000 common shares issuable upon
      exercise of subsequently acquired warrants, that are not being registered
      for inclusion in this offering.


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