Pamt (PAMT) 10-Q 2011 Q2 Quarterly report

EXHIBIT 32.1

CERTIFICATIONS OF CHIEF EXECUTIVE OFFICER AND CHIEF FINANCIAL OFFICER

In connection with the Quarterly Report of P.A.M. Transportation Services, Inc. (the “Company”) on Form 10-Q for the period ending June 30, 2011 (the “Report”) filed with the Securities and Exchange Commission, each of the undersigned hereby certifies that:

(1)   The Report fully complies with the requirements of section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

(2)   The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

Date:  August 8, 2011

/s/ Daniel H. Cushman                                                      

Daniel H. Cushman

President and Chief Executive Officer

(principal executive officer)

/s/ Lance K. Stewart                                                      

Lance K. Stewart

Vice President-Finance, Chief Financial

Officer, Secretary and Treasurer

(principal accounting and financial officer)