**Exhibit 31.1**

## **Certification of Chief Executive Officer**

**Pursuant to Section 302 of theSarbanes-Oxley Act of 2002**

I, PaulK. Willmott, certify that:

1.                               Ihave reviewed this report on Form 10-Q****ofUranium Resources, Inc.;

2.                               Basedon my knowledge, this report does not contain any untrue statement of amaterial fact or omit to state a material fact necessary to make the statementsmade, in light of the circumstances under which such statements were made, notmisleading with respect to the period covered by this report;

3.                               Basedon my knowledge, the financial statements, and other financial informationincluded in this report, fairly present in all material respects the financialcondition, results of operations and cash flows of the issuer as of, and for,the periods presented in this report;

4.          Theissuer’s other certifying officers and I are responsible for establishing andmaintaining disclosure controls and procedures (as defined in Exchange ActRules 13a-15(e) and 15d-15(e)) for the issuer and have:

(a)  Designed such disclosure controls and procedures, or caused such disclosure controls andprocedures to be designed under our supervision, to ensure that materialinformation relating to the issuer, including its consolidated subsidiaries, ismade known to us by others within those entities, particularly during theperiod in which this report is being prepared;

(b)  Evaluatedthe effectiveness of the issuer’s disclosure controls and procedures andpresented 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

(c)  Disclosedin this report any change in the issuer’s internal control over financialreporting that occurred during the issuer’s most recent fiscal quarter (theissuer’s first fiscal quarter of the annual report) that has materiallyaffected or is reasonably likely to materially affect, the issuer’s internalcontrol over financial reporting; and

5.          The issuer’s other certifying officersand I have disclosed, based on our most recent evaluation of internal controlover financial reporting, to the issuer’s auditors and the audit committee ofissuer’s board of directors (or persons performing the equivalent functions):

(a)  All significant deficiencies and material weaknesses in the design or operationof internal control over financial reporting which are reasonably likely toadversely affect the issuer’s ability to record, process, summarize and reportfinancial information; and

(b)  Any fraud, whether or not material, that involves management or other employeeswho have a significant role in the issuer’s internal control over financialreporting.
| Date: May 10, 2007 |   |                                                |
|--------------------|--------|-----------------------------------------------------|
|               |   |                                                |
|               |   | /s/ Paul K. Willmott                                |
|               |   | Title:  President  and Chief Executive Officer |

 

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