Brian Knorr (born December 20, 1963) is an American college football coach. He was most recently the defensive coordinator for the Indiana Hoosiers football team. He graduated from the Air Force Academy and played quarterback. He also was an assistant at the Air Force Academy when he went to Ohio University with Jim Grobe. He was the head coach of the Ohio Bobcats program from 2001 to 2004. He was fired on November 18, 2004, after he compiled an 11–35 (.239) record in four seasons. He was replaced by the more successful Frank Solich. He previously served as a defensive coordinator under the previous head coach, Grobe. His best season came in 2004, when his team went 4–7, including 2–6 in conference play. Until February 2008 he served as an assistant head coach at the Air Force Academy unde