Zachary "Zac" McKensie Alcorn (born August 24, 1980 in Chadron, Nebraska) is a former American football tight end. He was signed by the Green Bay Packers as an undrafted free agent 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.
Alcorn attended Chadron Senior High School in Chadron, Nebraska, and was a letterman in football, basketball, and track & field as a discus thrower. In football, as a senior, he won All-Conference honors and All-State honors. In basketball, he was named the team M.V.P., and garnered All-State honors. Alcorn attended Black Hills State University in Spearfish, South Dakota.