Glenn Kassabin Hagan (born June 25, 1955) is a retired American basketball player. He attended Cardinal Mooney High School in Rochester, New York, and St. Bonaventure University. After graduating from St. Bonaventure in 1978, he was an all-star guard for the Rochester Zeniths of the Continental Basketball Association in the early 1980s, leading the franchise to two CBA championships. He was a two-time All-CBA First Team selection in 1980 and 1981.