Exhibit 5.1

                         [Letterhead of Dumoulin Black]

July 16, 2004

WaveRider Communications Inc.
255 Consumers Road
Suite 500
Toronto, Ontario M2J 1R4

WaveRider Communications (Canada) Inc.
255 Consumers Road
Suite 500
Toronto, Ontario M2J 1R4

Ladies and Gentlemen:

Re:      WaveRider Communications (Canada) Inc.
         Registration Statement on Form F-4


We have acted as local corporate counsel in British Columbia to WaveRider
Communications Inc., a Nevada corporation ("WaveRider"), and WaveRider
Communications (Canada) Inc. ("WCAN"), a British Columbia corporation, in
connection with (i) the Registration Statement on Form F-4 (the "Registration
Statement") filed by WCAN with the Securities and Exchange Commission under the
Securities Act of 1933, as amended (the "Securities Act"), on the date hereof;
and (ii) the proposed reorganization (the "Reorganization"), as described
therein.

Under the proposed Agreement and Plan of Merger (the "Merger Agreement") to be
entered into in connection with the Reorganization, each issued share of common
stock, par value US$0.01 per share of WaveRider, as such shares exist following
the consolidation on a 10 for 1 basis on July 1, 2004, ("WaveRider Common
Stock") will be converted into the right to receive one common share (with no
par value) in the capital of WCAN ("WCAN Common Share"). In addition, upon the
Merger as defined in the Merger Agreement being effective, WCAN shall assume all
WaveRider warrants, convertible debentures and stock options issued under
WaveRider's Stock Option Plans (the "Convertible Securities") outstanding at the
time the Merger becomes effective and the Convertible Securities will be
automatically exercisable or convertible, as the case may be, for WCAN Common
Shares on the same basis as if the Convertible Securities had been exercised or
converted for WaveRider Common Stock prior to the Merger.

In rendering the opinion expressed below, we have examined and relied upon a
directors' resolution of WCAN dated July 15, 2004 and such other officer
certificates and documents as we have deemed relevant and necessary. Our opinion
is conditioned, among other things, not only upon such accuracy and completeness
of such documents as of the date hereof, but also the continuing accuracy and
completeness thereof as of the effective time of the Merger. Moreover, we have
assumed the absence of any change to any of such instruments between the date
hereof and the effective time of the Merger.

We have also assumed the authenticity of all documents submitted to us as
originals, the genuineness of all signatures, the legal capacity of all natural
persons and the conformity with original documents of all copies submitted to us
for our examination. We have further assumed that the transactions related to
the Reorganization or contemplated by the Merger Agreement will be consummated
in accordance with the Merger Agreement and as described in the Registration
Statement.

Based on the foregoing, we advise you that, in our opinion, the issuance of up
to 22,624,856 WCAN Common Shares (or such additional number of WCAN Common
Shares as may be issuable in connection with the Merger) to be issued by WCAN in
exchange for WaveRider Common Stock and the issuance of additional WCAN Common
Shares upon exercise or conversion of the Convertible Securities in connection
with the Reorganization has been duly approved by the board of directors of WCAN
and such shares, when issued in accordance with the provisions of the Merger
Agreement, will be validly issued, fully paid and non-assessable.


This opinion is expressed as of the date hereof, and we are under no obligation
to supplement or revise our opinion to reflect any changes in applicable law or
in any information, document, covenant, statement, representation or assumption
referenced therein that becomes untrue or incorrect. This opinion is furnished
to you solely for use in connection with the Registration Statement, and it is
not to be used, circulated, quoted or otherwise referred to for any other
purpose without our express written consent.


We hereby consent to the filing of this opinion as an exhibit to the
Registration Statement and to the reference to us under the heading "Legal
Matters" therein. In giving such consent, we do not thereby admit that we are in
the category of persons whose consent is required under Section 7 of the
Securities Act or the rules and regulations promulgated thereunder, or that we
are "experts" within the meaning of the Securities Act or the rules and
regulations promulgated thereunder.

Yours very truly,

/s/  Dumoulin Black