Dan Hartleb (born February 15, 1966) is an American baseball coach and former catcher, who is the current the head baseball coach of the Illinois Fighting Illini. Hartleb played two seasons of junior college baseball at John A. Logan College before finishing his playing career with two seasons at Southern Illinois. His coaching career began immediately after his playing career ended, as he served as a graduate assistant under Itch Jones at Southern Illinois from 1989–1990. When Jones was offered the head coaching position at Illinois following the 1990 season, Hartleb went with him and served as an Illinois assistant from 1991–2005. Under Hartleb, the Fighting Illini have appeared in four NCAA Tournaments.