Carnell Williams, American football player
Carnell Lamar "Cadillac" Williams (born April 21, 1982) is an American football coach and former running back in the National Football League (NFL), currently serving as running backs coach for the Auburn Tigers football team, for whom he also played college football. He was drafted by the Tampa Bay Buccaneers in the first round of the 2005 NFL Draft and also played for the St. Louis Rams.