EXHIBIT 32.1

CERTIFICATIONS OF CHIEF EXECUTIVE OFFICER AND CHIEF FINANCIAL OFFICER

In connection with the Annual Report of P.A.M. Transportation Services, Inc. (the "Company") on Form 10-K for the period ended December 31, 2019, (the "Report") as 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.

		P.A.M. TRANSPORTATION SERVICES, INC.
Dated: March 13, 2020	By:	/s/ Daniel H. Cushman
		DANIEL H. CUSHMAN
		President and Chief Executive Officer
		(principal executive officer)
Dated: March 13, 2020	By:	/s/ Allen W. West
		ALLEN W. WEST
		Vice President-Finance, Chief Financial Officer,
		Secretary and Treasurer
		(principal accounting and financial officer)