Jon "Chucky" David Gruden (born August 17, 1963 in Sandusky, Ohio) is a former American football head coach, most recently with the Tampa Bay Buccaneers of the NFL. Prior to taking over as coach of Tampa Bay, he was the head coach of the Oakland Raiders for 4 years. The Buccaneers won Super Bowl XXXVII in the team's first year under Gruden's tenure, making him the youngest head coach ever to win a Super Bowl at the time, a record since eclipsed by Mike Tomlin. In 2009, Gruden will serve as a color commentator on ESPN Monday Night Football.

Gruden attended Clay High School in South Bend, Indiana, where his father Jim Gruden served as an assistant to Dan Devine at the University of Notre Dame. Feeling he would not have a chance to play for the Fighting Irish, Jon Gruden chose not to attend Notre Dame – where he would have received free tuition as a coach's child – but Muskingum College in New Concord, Ohio. After just one year he transferred to the University of Dayton, where he was a back-up quarterback under coach Mike Kelly from 1982–

After graduating with a degree in communications, Gruden started his coaching career as a graduate assistant at the University of Tennessee during the 1986 season. He found his way as the quarterbacks coach at Southeast Missouri State for two years. He then moved to the University of Pacific in 1989 as offensive assistant. He became the wide receivers coach for the University of Pittsburgh in 1991.