James Gleason "Jimmy" Conzelman (March 6, 1898 – July 31, 1970) was an American football player and coach. He played for ten seasons in the National Football League (NFL) with five different teams between 1920 and 1929. He was a player-coach for the 1928 NFL Champion Providence Steam Roller and was the head coach of the Chicago Cardinals, leading the team to its last NFL Championship in 1947. Conzelman was inducted into the Pro Football Hall of Fame in 1964.