Joseph Levi "Joe Lee" Dunn (born July 14, 1946) is an American football coach and former player. As a defensive coordinator, he is known for coaching from the sidelines, seldom using a headset or carrying playsheets, and his aggressive, unorthodox schemes. He is widely credited with inventing the attacking 3-3-5 scheme that has been used by several college and high school teams. Dunn attended the University of Chattanooga, now the University of Tennessee at Chattanooga, where he played football from 1965 to 1967. He is a Sigma Chi.