Frederick Harvey "Tommy" Thomas (December 19, 1892 – January 15, 1986) was an American professional baseball third baseman. He played in Major League Baseball (MLB) from 1918 to 1920 for the Boston Red Sox, Philadelphia Athletics, and Washington Senators. In a three-year career, Thomas was a .225 hitter (193-for-859) with four home runs and 45 RBI in 247 games, including 88 runs, 19 doubles, 14 triples, and 24 stolen bases. He also hit .118 in six Series games (2-for-17).