Exhibit 12.1



I, Martin P. Cotter, Chief Executive Officer and Chief Financial Officer, certify that:



1. I have reviewed this Annual Report on Form 20-F of

Portrush Petroleum Corporation;



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

Annual 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 company as of, and for, the periods presented in this report;



4. The companys other certifying officer(s) 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 company 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 company, 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 company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 companys internal control

over financial reporting that occurred during the period covered by the

annual report that has materially affected, or is reasonably likely to

materially affect, the companys internal control over financial

reporting; and



5. The companys other certifying officer(s) and I have disclosed, based on

our most recent evaluation of internal control over financial reporting, to

the companys auditors and the audit committee of the company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 company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 companys internal control

over financial reporting.



Date: June 29, 2004

Martin P. Cotter_______

Chief Executive Officer and Chief Financial Officer