Elmer O. Leatherwood (September 4, 1872 – December 24, 1929) was an American politician and attorney who was a U.S. Representative from Utah from 1921 until 1929.

He moved to Salt Lake City, Utah, the same year and continued the practice of his profession.

He served as president of the Western Powder Co., Leary & Warren Stockyards, Hellgate Mining & Milling Co., and the Olympus Mining & Milling Co. Leatherwood was elected as a Republican to the Sixty-seventh and to the four succeeding Congresses and served from March 4, 1921, until his death in Washington, D.C., on December 24, 1929.

He served as chairman of the Committee on Expenditures on Public Buildings (Sixty-eighth and Sixty-ninth Congresses).

This article incorporates public domain material from the Biographical Directory of the United States Congress Leatherwood, Elmer O.