Matthew Stanley Hamill (born October 5, 1976) is an American mixed martial artist and wrestler who has competed in the Light Heavyweight division of the UFC. He is a three-time NCAA Division III National Champion in wrestling (167 lb class in 1997, 190 lb class in 1998 and 197 lb class in 1999) while attending the Rochester Institute of Technology (RIT) in Rochester, New York. Additionally, Hamill has a silver medal in Greco-Roman Wrestling and a gold medal in Freestyle Wrestling from the 2001 Summer Deaflympics. He is also the only man to defeat Jon Jones
Of Irish descent, Hamill was deaf from birth. He was introduced to wrestling by his stepfather Michael Rich, who was the head wrestling coach at Loveland High School. Hamill attended the Rochester Institute of Technology for three years transferring there after a year at Purdue University.
Hamill was on The Ultimate Fighter 3 reality television show, training under former UFC Light Heavyweight Champion Tito Ortiz in the 205 lb (93 kg) weight class. He won a preliminary fight against Mike Nickels via decision, but was unable to continue into the semi-finals due to injuries.