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EXHIBIT 11.1

CERTIFICATION PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT

I, André Tremblay, President and Chief Executive Officer of Microcell
Telecommunications Inc., certify that:



| | 1. |  | I have reviewed this annual report on Form 20-F of Microcell
Telecommunications Inc.;                                                                                                                                                                                                                                   
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| | 2. |  | Based on my knowledge, this annual report does not contain any untrue
statement of a material fact or omit to state a material fact necessary
to make the statements made, in light of the circumstances under which
such statements were made, not misleading with respect to the period
covered by this annual report;
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| | 3. |  | Based on my knowledge, the financial statements, and other financial
information included in this annual report, fairly present in all
material respects the financial condition, results of operations and
cash flows of the registrant as of, and for, the periods presented in
this annual report;                   
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| | 4. |  | The registrants other certifying officers and I are responsible for
establishing and maintaining disclosure controls and procedures (as
defined in Exchange Act Rules 13a-14 and 15d-14) for the registrant and
have:                                                                                                  



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| | a) designed such disclosure controls and procedures to
ensure that material information relating to the registrant,
including its consolidated subsidiaries, is made known to us by
others within those entities, particularly during the period in
which this annual report is being prepared;
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| | b) evaluated the effectiveness of the registrants
disclosure controls and procedures as of a date within 90 days
prior to the filing date of this annual report (the Evaluation
Date); and                                                                                                  
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| | c) presented in this annual report our conclusions about the
effectiveness of the disclosure controls and procedures based on
our evaluation as of the Evaluation Date;                                                                                                                        



| | 5. |  | The registrants other certifying officers and I have disclosed,
based on our most recent evaluation, to the registrants auditors and
the audit committee of registrants board of directors (or persons
performing the equivalent function):
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| | a) all significant deficiencies in the design or operation
of internal controls which could adversely affect the registrants
ability to record, process, summarize and report financial data
and have identified for the registrants auditors any material
weaknesses in internal controls; and
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| | b) any fraud, whether or not material, that involves
management or other employees who have a significant role in the
registrants internal controls; and                                                                                                                                        



| | 6. |  | The registrants other certifying officers and I have indicated in
this annual report whether there were significant changes in internal
controls or in other factors that could significantly affect internal
controls subsequent to the date of our most recent evaluation, including
any corrective actions with regard to significant deficiencies and
material weaknesses.
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Date: June 25, 2003



| | /s/ André Tremblay
André Tremblay
President and Chief Executive Officer
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