First Midwest Bancorp (ONBPP) 10-K 2009 FY Annual report

Exhibit 31.1

CERTIFICATION

I, Michael L. Scudder, certify that:
1.    I have reviewed this annual report on Form 10-K of First Midwest Bancorp Inc.;
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 the registrant as                of, and for, the periods presented in this annual report;
4.    The registrant’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 the registrant 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 registrant, 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 registrant’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 registrant’s internal control over financial reporting that occurred                               during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an                               annual report) that has materially affected, or is reasonably likely to materially affect, the                               registrant’s internal control over financial reporting; and
5.    The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control                over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s Board of Directors                (or persons performing the equivalent function):
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 registrant’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 registrant’s internal control over financial reporting.
Date:  March 1, 2010	/S/ MICHAEL L. SCUDDER
	[Signature] President and Chief Executive Officer