The welterweight was the second-heaviest freestyle wrestling weight class held as part of the wrestling programme at the 1904 Summer Olympics.

It included wrestlers weighing 145 to 158 pounds (65.8 to 71.7 kg).

[1] It was the first time the event, like all other freestyle wrestling events, was held in Olympic competition.

Ten wrestlers competed.

[2] Jerry Winholtz and William Hennessy fought for the bronze medal after losing in this tournament against the gold medalist Charles Ericksen.