| Tom McBreen | |
| Fullname: | Thomas Sean McBreen |
| Nicknames: | "Tom" |
| National Team: | United States |
| Strokes: | Freestyle |
| Club: | Golden Gate Aquatic Club |
| Collegeteam: | University of Southern California |
| Birth Date: | August 31, 1952 |
| Birth Place: | Spokane, Washington, U.S. |
| Height: | 6feet |
| Weight: | 154lb |
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.