John Henry "Jack" Kelley is a former American ice hockey coach. He is a member of the United States Hockey Hall of Fame. Kelley was general manager and head coach of the New England Whalers of the World Hockey Association. During the 1972-73 season, he won Howard Baldwin Trophy as the coach of the year. He also led the Whalers to the Avco World Trophy that year. He previously served as head coach at Boston University, leading the Terriers to back-to-back NCAA hockey championships in 1971 and 1972. In his 10 year coaching career at Boston U, he compiled a .720 winning percentage and won six Beanpot Tournaments.
Kelley also played his college hockey at Boston U, participating in the NCAA Hockey Tournament in 1951 and 1952. At the time of his graduation, he was the school's all time leading scorer among defensemen. He then took over as coach at Colby College in 1955. After leaving the Whalers, he later worked in the front offices of the Detroit Red Wings and Pittsburgh Penguins. His son is writer and producer, David E. Kelley.