Tribune Media 10-K 2006 FY Annual report

EXHIBIT 31.2

Form 10-K Certification

I, Donald C. Grenesko, certify that:

1.I have reviewed this annual report on Form 10-K of Tribune Company;

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;

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 Tribune Company as of, and for, the periods presented in this annual report;

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:

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 annual 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 Tribune Company’s disclosure controls and procedures and presented in this annual report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this annual report based on such evaluation; and

d)Disclosed in this annual 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

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:

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

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.

	/s/ DONALD C. GRENESKO
	Donald C. Grenesko
	Senior Vice President/
Date: February 26, 2007	Finance and Administration

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