Clay Tallman was a Democratic politician from the U.S. State of Nevada. He was Commissioner of the United States General Land Office from 1913 to 1921. He was born May 7, 1874 at Belding, Michigan. He graduated from Michigan State University in 1895. Tallman was confirmed by the United States Senate, and was commissioned June 5, 1913. He was replaced by William Spry on March 22, 1921. He died at Montrose, Colorado August 25, 1949.