John Warren Kaiser (October 6, 1926 – May 25, 2022) was Athletics Director Emeritus at St. John's University in Queens, NY. He was an American baseball player, college coach, and administrator. As a player, he helped St. John's to the 1949 College World Series. After a brief minor league career, he became head coach at St. John's. Kaiser managed the short-season Class D Lexington Red Sox in 1957 and 1958. Kaiser led the now-named St. John's Red Storm baseball team to eleven postseason appearances, including three trips to the College World Series (1960, 1966 and 1968) in his 18-year career as head coach. Kaiser then became athletic director at St. John's, and was instrumental in the establishment of the Big East Conference.