James Patrick Tressel (born December 5, 1952) is a gameday consultant for the Indianapolis Colts, and former collegiate football head coach at both the Ohio State University from 2001 to 2011 and at Youngstown State University from 1986 to 2000.
Tressel is most notable for his tenure at Ohio State. He was hired by the Buckeyes before the 2001 season to replace John Cooper. During his tenure as Ohio State's 22nd head football coach, Tressel's teams played in three BCS National Championship Games. His 2002 squad won a national title and achieved the first 14–0 season record in major college football since Penn went 15–0 in 1897. Tressel finished his Buckeye career with an official overall record of 94–22 (.810) at Ohio State, including six Big Ten Conference championships, a 5–4 bowl record, a 4–3 mark in BCS bowl games, and an 8–1 record against the arch-rival Michigan Wolverines. Tressel's eight wins against Michigan place him second in school history to Woody Hayes, who had 16. He is the only Ohio State head coach to win seven consecutive games against the Wolverines. Tressel resigned as the Ohio State football coach in May 2011 amid an NCAA investigation of rules violations during the 2010 season; which, in turn, led to Ohio State self-vacating their 2010 season. In September 2011, he was hired as a consultant by the Indianapolis Colts of the NFL.
Before coming to Ohio State, Tressel was the head football coach at Youngstown State for 15 seasons (1986–2000), where his teams won four NCAA Division I-AA Football Championships.