The Bare Knuckle Boxing Hall of Fame is a museum and hall of fame in Belfast, New York, dedicated to the sport of bare-knuckle boxing. It is housed in barns that were once owned by the Greco-Roman wrestling champion and physical culture pioneer William Muldoon. The heavyweight boxing champion John L. Sullivan, who fought in both bare-knuckled and gloved boxing contests, trained in these barns under Muldoon's guidance for his championship bout against Jake Kilrain in 1889. The barns were originally across Main Street from their current location, on the grounds of the Belfast Catholic Church. They were bought, moved, and restored by Scott Burt when the church became no longer interested in maintaining them. Burt opened the Hall of Fame in 2009, when it had its first induction class.

Bare-knuckle boxing is a full-contact combat sport based on punching without any form of padding on the hands. The sport as it is known today originated in 17th-century England and differs from street fighting as it follows an accepted set of rules.