John Daniel Gruden (born June 4, 1970) is an American professional ice hockey coach and former player.

Gruden coached the Stoney Creek High School Cougars hockey team in Rochester, Michigan along with fellow NHL alumnus Greg Johnson.

More recently, Gruden served as an assistant coach for the USA Hockey National Team Development Program, helping lead the United States to a gold medal at the 2014 IIHF World U18 Championships.

[1] On March 26, 2015, it was announced that Gruden would serve as the inaugural head coach for the Flint Firebirds of the Ontario Hockey League during the 2015–16 season.

[2][3] Following a successful player walkout, Gruden was reinstated as the Firebirds head coach and given a three-year contract extension.