OSLER, HOSKIN & HARCOURT LLP
                            Barristers & Solicitors
                         Box 50, 1 First Canadian Place
                        Toronto, Ontario, Canada M5X 1B8



                                                      Our Matter Number: 1021033

April 15, 2002


Moore Corporation Limited
One Canterbury Green, 6th Floor
Stamford, Connecticut  06901

Dear Sirs & Mesdames:

MOORE CORPORATION LIMITED
REGISTRATION STATEMENT ON FORM S-8

We have acted as Ontario counsel to Moore Corporation Limited, a corporation
formed under the laws of the Province of Ontario, Canada (the "Registrant"),
in connection with the Registrant's 2001 Long Term Incentive Plan (the
"Plan"). We understand that the Registrant has filed a Registration Statement
on Form S-8 (the "Registration Statement") with the Securities and Exchange
Commission under the Securities Act of 1933, as amended, relating to the
offering of 2,500,000 common shares (the "Shares") issuable upon the exercise
of options granted or to be granted to certain employees and others of the
Registrant pursuant to the Plan.

For purposes of expressing the opinion set forth herein, we have examined
originals or copies, satisfactory to us, of all such corporate records and of
all such agreements, certificates and other documents as we have deemed
relevant and necessary as a basis for the opinion hereinafter expressed. In
such examination, we have assumed the genuineness of all signatures, the
authenticity of all documents submitted to us as originals and the conformity
with the original documents of all documents submitted to us as copies. As to
any facts material to such opinion, we have, to the extent that relevant facts
were not independently established by us, relied on certificates of public
officials and certificates of officers or other representatives of the
Registrant.

We are solicitors qualified to practice law in the Province of Ontario and
express no opinion as to any laws or any matters governed by any laws other
than the laws of the Province of Ontario and the federal laws of Canada
applicable therein.

Based upon and subject to the foregoing, we are of the opinion that, upon the
exercise of options granted under the Plan which have been or are duly granted
pursuant to the terms of the Plan and are duly exercised and paid for in
accordance with their terms, the terms of the Plan and the terms of the
resolution pursuant to which such options have been or are granted, the Shares
so issued will be outstanding as fully paid and non-assessable.




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We hereby consent to the use of our opinion as herein set forth as an exhibit
to the Registration Statement. In giving such consent, we do not thereby
concede that we are in the category of persons whose consent is required under
Section 7 of the Securities Act of 1933 or the rules and regulations
promulgated thereunder, or that we are "experts" within the meaning of the
Securities Act of 1933 or the rules and regulations promulgated thereunder.


Yours very truly,

OSLER, HOSKIN & HARCOURT LLP