Exhibit 12.1  Certification of the Principal Executive Officer pursuant to §302 of
the Sarbanes-Oxley Act of 2002  Certification  I,
Jacques Mallette, President and Chief Executive Officer of Quebecor World Inc.,
certify that:  1.I have reviewed this annual
report on Form 20-F of Quebecor World 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 company as of, and for, the periods presented
in this report;  4.The company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)) for the company 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 company, 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 company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 company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 companys internal control over
financial reporting; and  5.The companys other certifying
officer(s) and I have disclosed, based on our most recent evaluation of
internal control over financial reporting, to the companys auditors and the
audit committee of the company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 company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 companys internal control over financial reporting.  Date:  March 27, 2009   /s/
  Jacques MalletteJacques
  MallettePresident
  and Chief Executive Officer