Zachary "Zac" McKensie Alcorn (born August 24, 1980) is a former American football tight end. He was signed by the Green Bay Packers as an undrafted free agent in 2006. Alcorn appeared in six games with the Packers in 2006. He played college football at Black Hills State. Alcorn has also been a member of the San Francisco 49ers and Kansas City Chiefs.