Edward Scott Glacken (July 28, 1944 – December 27, 2006) was an American football quarterback and coach. He played college football at Duke University. In 1963, Glacken threw for a school-record 12 touchdown passes. Glacken finished his Duke career with 3,170 yards and 24 touchdowns, helping the Blue Devils to a 15–13–2 record during his final three years as a player. Glacken played two seasons with the Denver Broncos, leading them to a 1967 exhibition victory over the Detroit Lions, the first time an American Football League club defeated a team from the rival National Football League.