Arthur Leo Mahan (June 8, 1913 – December 7, 2010) was a professional baseball player, who played as a first baseman in the major leagues for the Philadelphia Phillies during the 1940 season. Born in Somerville, Massachusetts, he batted and threw left-handed. A 1936 graduate of Villanova University, Mahan later became their head baseball coach from 1950 until 1972, and athletic director until 1973. Mahan died on December 7, 2010 in Villanova, Pennsylvania at the age of 97. Up to the time of his death, he had been recognized as the fourth-oldest living Major League baseball player.