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LNB Bancorp, Inc. Exhibit to Form 10 - Q (for the quarter ended
March 31, 2005) S - K Reference Number (31(i)(a)) Chief Executive Officer Sarbanes-Oxley Act 302 Certification dated May 10, 2005 for LNB Bancorp,
Inc.s Quarterly Report on Form 10-Q for the quarter ended March 31, 2005. Exhibit (31(i)(a))
Certifications I, Daniel K. Klimas, President and Chief Executive Officer of LNB Bancorp, Inc. (the
registrant) certify that: 1. I have reviewed this Quarterly Report on Form 10-Q of LNB Bancorp, 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 registrant as of, and for, the periods presented in this quarterly 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)) 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




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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 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
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: May 10, 2005/s/ Daniel E. KlimasDaniel E. KlimasPresident and Chief Executive Officer