Jon Keith Diebler (born June 22, 1988) is an American former professional basketball player who is the director of recruiting for the Butler Bulldogs of the Big East Conference.

The family left when Keith accepted the head coaching position at Upper Sandusky High School, which Jon attended for his remaining three seasons.

[1] In Jon's sophomore year, the Upper Sandusky Rams won the state championship, coached by his father.

[1] He won Ohio's Mr. Basketball his senior year and despite having his nose broken in three places on a layup attempt in the final quarter of the Division II regional championship game, he helped the team reach the state finals game and scored 48 points in a two-point loss to Dayton Dunbar.

[2] On March 13, 2010, Diebler surpassed Jamar Butler for the Ohio State record for 3-point field goals made.

[5] In August 2011, Diebler signed a one-year contract with the Greek Basket League club Panionios.

[14] Diebler joined Carmen's Crew, composed primarily of Ohio State alumni, in The Basketball Tournament 2020.