Timothy Leo Cullen (born February 16, 1942) is a former infielder in Major League Baseball who played for the Washington Senators (1966–67, 1968–71), Chicago White Sox (1968) and Oakland Athletics (1972). He batted and threw right-handed. In a six-season career, Cullen was a .220 hitter with nine home runs and 134 RBI in 700 games.