Robert Lewis Pruett (born June 20, 1943) is a former American football player and coach. He served as the head football coach Marshall University for nine seasons, from 1996 to 2004. During his tenure at Marshall, the Marshall Thundering Herd football team compiled a record of 94–23 (.803 winning percentage), completed two undefeated seasons, won six conference championships, won five of seven bowl games played, and captured the NCAA Division I-AA Football Championship in 1996. Pruett has coached many high-profile National Football League players, including Randy Moss, Chad Pennington, and Byron Leftwich. In 1999, he was inducted into the Marshall University Athletics Hall of Fame for his collegiate career in football, track and field, and wrestling.