Exhibit 31.1

RULE 13A-14(A)/15D-14(A) CERTIFICATION

I, John G.
Kalogeris, certify that:

1. I have reviewed this annual report on Form 10-K of National Energy Services Company, Inc.;

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 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 small business issuer as of, and for, the periods presented in this report;

4. The small business issuer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 the internal control over financial reporting (as defined in
Exchange Act Rule 13a-15(f) and 15d-15(f) for the small business issuer 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 small business issuer, 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
controls over financial reporting, or caused such internal controls 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 small business issuers disclosure controls and procedures and presented in this report our conclusions after 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 small business issuers internal control over financial
reporting that occurred during the small business issuers most recent fiscal quarter (the small business issuers fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially
affect, the small business issuers internal control over financial reporting; and



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

a. All significant deficiencies in the design or operation of internal control over financial reporting which are reasonably
likely to adversely affect the small business issuer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 small business issuers internal control over financial reporting.



|                  |  |  |  |                        
|----------------- |  |  |  | -----------------------
|February 16, 2010 |  |  |  | /s/ John G. Kalogeris  
|                  |  |  |  | John G. Kalogeris      
|                  |  |  |  | Chief Executive Officer