Exhibit 31.1

CERTIFICATIONS

I, John J. Limbert, the President and Chief Executive Officer of NB&T Financial Group, Inc., certify that:

1. I have reviewed this quarterly report on Form 10-Q/A of NB&T Financial Group, Inc.; and

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;