Dan Hartleb (born February 15, 1966) is an American college baseball coach, currently the head coach of Illinois. He has held that position since prior to the start of the 2006 season. Under Hartleb, the Fighting Illini have appeared in two NCAA Tournaments. 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. Hartleb became the head coach at Illinois when Jones retired at the end of the 2005 season. The Illini qualified for four Big Ten Tournaments in Hartleb's first five seasons, finishing with an above-.500 record in each. They failed to make an NCAA Tournament or win more than one game in a Big Ten Tournament, however, and media outlets raised the possibility that Hartleb's contract would not be renewed following the 2010. It was, however, and Illinois won the Big Ten regular season and tournament titles the following year, qualifying for the NCAA Tournament. There, the team went 2–2 and reached a regional final. After missing the Big Ten Tournament in 2012, Illinois reached another NCAA Tournament in 2013. Following the season, Hartleb signed a new, multi-year contract. Due to the death of his father, Hartleb spent some time away from the team during the 2014 season.