Jeffrey Carl "Jeff" Blatnick (July 26, 1957 – October 24, 2012) was an American super heavyweight Greco-Roman wrestler and sports commentator. He won NCAA Division II heavyweight wrestling championships in 1978 and 1979 and won the Olympic gold medal in Greco-Roman wrestling in 1984 after battling back from cancer.
As a commentator, Blatnick worked UFC 4 through UFC 32 for the Ultimate Fighting Championship. He also served as the UFC commissioner and was instrumental in helping the UFC get regulated by the athletic commissions, which kept the sport of mixed martial arts alive during its Dark Ages. Blatnick is among the people credited with giving the sport of mixed martial arts its name.