Attached files

Exhibit 31.1

CERTIFICATION

I, David C. Vernon, certify that:
1. I have reviewed this Annual Report on Form 10-K of National Bancshares
   Corporation (the `registrant`);

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 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 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: March 29, 2011
/s/ David C. Vernon
David C. Vernon
President and Chief Executive Officer