EXHIBIT 31.1

Form 10-Q Certification

I, Dennis J. FitzSimons, certify that:

|1. | I have reviewed this quarterly report on Form 10-Q
of Tribune Company;
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|2. | Based on my knowledge, this quarterly 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 quarterly report;
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|3. | Based on my knowledge, the financial statements, and other financial information
included in this quarterly report, fairly present, in all material
respects, the financial condition, results of operations and cash flows of
Tribune Company as of, and for, the periods presented in this quarterly
report;
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|4. | Tribune Companys other certifying officer 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 Tribune Company and have:
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|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 Tribune Company, including its
consolidated subsidiaries, is made known to us by others within those
entities, particularly during the period in which this quarterly report is
being prepared;
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|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;
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|c) |  | Evaluated the effectiveness of Tribune Companys disclosure controls and
procedures and presented in this quarterly report our conclusions about
the effectiveness of the disclosure controls and procedures, as of the end
of the period covered by this quarterly report based on such evaluation;
and
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|d) |  | Disclosed in this quarterly report any change in Tribune Companys internal
control over financial reporting that occurred during Tribune Companys
most recent fiscal quarter (Tribune Companys fourth fiscal quarter
in the case of an annual report) that has materially affected, or is
reasonably likely to materially affect, Tribune Companys internal
control over financial reporting; and
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|5. | Tribune Companys other certifying officer and I have disclosed, based on our
most recent evaluation of internal control over financial reporting, to
Tribune Companys auditors and the audit committee of Tribune
Companys board of directors:
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|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 Tribune Companys ability to record, process,
summarize and report financial information; and
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|b) |  | Any fraud, whether or not material, that involves management or other employees
who have a significant role in Tribune Companys internal control
over financial reporting.
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|Date:  April 29, 2005 | /s/  Dennis J. FitzSimons   
          Dennis J. FitzSimons      Chairman, President and
              Chief Executive Officer
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