Exhibit 31.1

CERTIFICATION OF CHIEF EXECUTIVE OFFICER PURSUANTTO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002

I, Gene W. Ray, certifythat:

1.  I havereviewed thisquarterly report on Form 10-Q of The TitanCorporation;

2.  Based on myknowledge, this report does not contain any untrue statement of amaterial fact or omit to state a material fact necessary to makethe statements made, in light of the circumstances under which suchstatements were made, not misleading with respect to the periodcovered by this report;

3.  Based on myknowledge, the financial statements, and other financialinformation included in this report, fairly present in all materialrespects the financial condition, results of operations and cashflows of the registrant as of, and for, the periods presented inthis report;

4.  Theregistrant’s other certifying officer and I are responsiblefor establishing and maintaining disclosure controls and procedures(as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) for theregistrant and have:

(a) Designed suchdisclosure controls and procedures, or caused such disclosurecontrols and procedures to be designed under our supervision, toensure that material information relating to the registrant,including its consolidated subsidiaries, is made known to us byothers within those entities, particularly during the period inwhich this report is being prepared;

(b) Evaluated theeffectiveness of the disclosure controls and procedures andpresented in this report our conclusions about the effectiveness ofthe disclosure controls and procedures, as of the end of the periodcovered by this report based on such evaluation; and

(c) Disclosed in thisreport any change in the registrant’s internal control overfinancial reporting that occurred during the registrant’smost recent fiscal quarter (the registrant’s fourth fiscalquarter in the case of an annual report) that has materiallyaffected, or is reasonably likely to materially affect, theregistrant’s internal control over financial reporting;and

5.  Theregistrant’s other certifying officer and I have disclosed,based on our most recent evaluation of internal control overfinancial reporting, to the registrant’s auditors and theaudit committee of the registrant’s board of directors (orpersons performing the equivalent functions):

(a) All significantdeficiencies and material weaknesses in the design or operation ofinternal control over financial reporting which are reasonablylikely to adversely affect the registrant’s ability torecord, process, summarize and report financial information;and

(b) Any fraud, whether ornot material, that involves management or other employees who havea significant role in the registrant’s internal control overfinancial reporting.

Date: August 11,2003

|                                                                                                                                                                                                                                                                   |           | /s/ GENE W. RAY |
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|                                                                | Gene W.Ray Chief Executive Officer                     |