Thomas Sean McBreen (born August 31, 1952) is an American former swimmer and Olympic gold medalist. At the 1972 Summer Olympics in Munich, Germany, McBreen earned a gold medal as a member of the winning U.S. team in the 4×100-meter freestyle relay, and also won the bronze medal in the men's 400-meter freestyle.
|Full name||Thomas Sean McBreen|
|National team||United States|
|Born||August 31, 1952|
|Height||6 ft 0 in (1.83 m)|
|Weight||154 lb (70 kg)|
|Club||Golden Gate Athletic Club|
|College team||University of Southern California|