**EXHIBIT 31.1**

 

**RULE 13a-14(a) [SECTION 302]CERTIFICATION OF PRINCIPAL EXECUTIVE OFFICER**

 

I, Terry W. Hamann, certify that:

 

1.                                       I have reviewedthis quarterly report on Form 10-QSB of TREATY OAK BANCORP, INC.;

 

2.                                       Based on myknowledge, this report does not contain any untrue statement of a material factor omit to state a material fact necessary to make the statements made, inlight of the circumstances under which such statements were made, notmisleading with respect to the period covered by this report;

 

3.                                       Based on myknowledge, the financial statements, and other financial information includedin this report, fairly present in all material respects the financialcondition, results of operations and cash flows of the small business issuer asof, and for, the periods presented in this report;

 

4.                                       The smallbusiness issuer’s other certifying officer(s) and I are responsible forestablishing and maintaining disclosure controls and procedures (as defined inExchange Act Rules 13a-15(e) and 15d-15(e)) for the small business issuer andhave:

 

a.                                       designed suchdisclosure controls and procedures, or caused such disclosure controls andprocedures to be designed under our supervision, to ensure that materialinformation relating to the small business issuer, including its consolidatedsubsidiaries, is made known to us by others within those entities, particularlyduring the period in which this report is being prepared;

 

b.                                      [Reservedpursuant to SEC Release Nos. 33-8238 and 34-47986];

 

c.                                       evaluated theeffectiveness of the small business issuer’s disclosure controls and proceduresand presented in this report our conclusions about the effectiveness of thedisclosure controls and procedures as of the end of the period covered by thisreport based on such evaluation; and

 

d.                                      disclosed in thisreport any change in the small business issuer’s internal control overfinancial reporting that occurred during the small business issuer’s mostrecent fiscal quarter (the small business issuer’s fourth fiscal quarter in thecase of an annual report) that has materially affected, or is reasonably likelyto materially affect, the small business issuer’s internal control overfinancial reporting; and

 

5.                                       The smallbusiness issuer’s other certifying officer(s) and I have disclosed, based onour most recent evaluation of internal control over financial reporting, to thesmall business issuer’s auditors and the audit committee of the small businessissuer’s board of directors (or persons performing the equivalent functions):

 

a.                                       all significantdeficiencies and material weaknesses in the design or operation of internalcontrol over financial reporting which are reasonably likely to adverselyaffect the small business issuer’s ability to record, process, summarize andreport financial information; and

 

b.                                      anyfraud, whether or not material, that involves management or other employees whohave a significant role in the small business issuer’s internal control overfinancial reporting.

 

 
| /s/ Terry W. Hamann                                                 |   | Date: August 13, 2004 |
|---------------------------------------------------------------------|--------|----------------------------|
| Terry W. Hamann,                                                    |   |
| President and Chief Executive Officer (principal executive officer) |

 

----