Host City: St. Louis, United States
Venue(s): Physical Culture Gymnasium, Washington University, St. Louis
Date Started: September 22, 1904
Date Finished: September 22, 1904
Format: Single elimination tournament.
There were only two entrants in this class, and one of them, Miles Burke, was over the weight limit for the event but he was still allowed to compete, although the reason is not known. George Finnegan won the gold medal by defeating Burke by a TKO in the first round. Finnegan also competed in the bantamweight class, in which there were also only two competitors, but Finnegan lost that title by a TKO in round three against Oliver Kirk. The 1904 AAU Champion was J. J. O’Brien who also won that title in 1907, but O’Brien was not entered in the Olympic event.