Adolphus Hailstork (born Adolphus Cunningham Hailstork III, Rochester, New York, April 17, 1941) is an American composer and educator. He grew up in Albany, New York, where he studied violin, piano, organ, and voice. Hailstork received a BA from Howard University, master's degree from the Manhattan School of Music and a doctorate in music composition from Michigan State University in 1971, studying with H. Owen Reed. His other composition instructors include Mark Fax, Vittorio Giannini, David Diamond, and Nadia Boulanger.