Thomas Constantine Laris (; born June 26, 1940, New York City) is an American long-distance runner who competed in the 10,000 meters at the 1968 Summer Olympics. He finished in 16th place. He had previously won a bronze medal in the same event at the 1967 Pan American Games. Laris's personal record (pr) in the mile was 4:06 in 1972.
Laris also competed in Masters Track and Field.