Douglas Charles Marrone (born July 25, 1964) is an American football coach and former offensive lineman who is the offensive line coach at the University of Alabama. He was previously the head coach at Syracuse from 2009 to 2012, where he played college football. In addition to his collegiate coaching, he served in the National Football League (NFL) as the head coach of the Buffalo Bills from 2013 to 2014 and the Jacksonville Jaguars from 2016 to 2020.