Exhibit
99.1




CERTIFICATION




I, Michael E.
Roach, certify that:






1. I have
reviewed this annual report on Form 40-F of CGI Group Inc.;


2.
Based on my knowledge, this 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 report;




3.
Based on my knowledge, the financial statements, and other financial information
included in this report, fairly present in all material respects the financial
condition, results of operations and cash flows of the issuer as of, and for,
the periods presented in this report;




4. The issuer’s other certifying
officer(s) and I are responsible for establishing and maintaining disclosure
controls and procedures (as defined in Exchange Act Rules 13a-15(e) and
15d-15(e)) and internal control over financial reporting (as defined in
Exchange Act Rules 13a-15(f) and 15d-15(f)) forthe issuer and
have:




(a)
Designed such disclosure controls and procedures, or caused such disclosure
controls and procedures to be designed under our supervision, to ensure that
material information relating to the issuer, including its consolidated
subsidiaries, is made known to us by others within those entities, particularly
during the period in which this report is being prepared;




(b) Designed such
internal control over financial reporting, or caused such internal control over
financial reporting to be designed under our supervision, to provide reasonable
assurance regarding the reliability of financial reporting and the preparation
of financial statements for external purposes in accordance with generally
accepted accounting principles;




(c) Evaluated the effectiveness of the
issuer’s disclosure controls and procedures and presented in this report our
conclusions about the effectiveness of the disclosure controls and procedures,
as of the end of the period covered by this report based on such evaluation;
and




(d)
Disclosed in this report any change in the issuer’s internal control over
financial reporting that occurred during the period covered by the annual report
that has materially affected, or is reasonably likely to materially affect, the
issuer’s internal control over financial reporting; and




5.
The issuer’s other certifying officer(s) and I have disclosed, based on our most
recent evaluation of internal control over financial reporting, to the issuer’s
auditors and the audit committee of the issuer’s board of directors (or persons
performing the equivalent functions):




(a)
All significant deficiencies and material weaknesses in the design or operation
of internal control over financial reporting which are reasonably likely to
adversely affect the issuer’s ability to record, process, summarize and report
financial information; and




(b)
Any fraud, whether or not material, that involves management or other employees
who have a significant role in the issuer’s internal control over financial
reporting.




Date:  December
18, 2009




/s/ Michael E.
Roach


Michael E.
Roach


President
and


Chief Executive
Officer