William Brenneman (born November 21, 1959) is an American retired professional wrestler and mixed martial artist, better known by his ring name Jerry Flynn. Flynn is best known for his appearances with World Championship Wrestling between 1996 and 2000. He is also known for his appearances in Japan with puroresu promotions including Pro Wrestling Fujiwara Gumi and New Japan Pro Wrestling. Presently, Flynn works as a coal mine foreman outside of Sioux Falls, South Dakota.