Boxing would make its debut in the 1904 Games, having not been part of the 1896 or 1900 Olympiads.
The Games were conducted as part of the St. Louis World's Fair of 1904, and were stretched out between July 1 and November 23. Every single boxer in the 1904 Olympics was an American; 85% of all athletes participating in the Games were Americans.
George Finnegan, Harry Spanger and Charles Mayer managed to win one gold and one silver medal, and James (Jack) Eagan one silver and one bronze medal. They are the only boxers to capture two medals at the same Olympics.
Oliver Kirk won the Gold Medal in the Bantamweight and Featherweight class, becoming the only boxer to accomplish this feat.
- Flyweight - George Finnegan (United States)
- Bantamweight - Oliver Kirk (United States)
- Featherweight - Oliver Kirk (United States)
- Lightweight - Harry Spanger (United States)
- Welterweight - Al Young (United States)
- Middleweight - Charles Mayer (United States)
- Heavyweight - Sam Berger (United States)