John Bryan "Jack" Friel (August 26, 1898 – December 12, 1995) was an American college basketball coach, the head coach of the Washington State Cougars for 30 seasons, from 1928 to 1958. He holds the school record for victories by a men's basketball coach with 495, and led Washington State to the 1941 NCAA Tournament championship game. He was later the first commissioner of the Big Sky Conference.