Terrence Edwin Roof Jr. (born December 11, 1963) is an American football coach and former player who is the defensive coordinator and linebackers coach at the University of Oklahoma. He previously served as a defensive analyst at Clemson University, where he worked with Oklahoma head coach Brent Venables. Prior to that, Roof was the defensive coordinator at Vanderbilt University. Roof served as the head football coach at Duke University from 2003 to 2007, compiling a 6–45 record.