| Jack Kaiser | |
| Birth Date: | 6 October 1926 |
| Birth Place: | Brooklyn, New York, U.S. |
| Player Years1: | 1946–1949 |
| Player Team1: | St. John's |
| Player Years2: | 1950 |
| Player Team2: | Oneonta Red Sox |
| Player Years3: | 1951 |
| Player Team3: | Roanoke Ro-Sox |
| Player Years4: | 1952 |
| Player Team4: | Albany Senators |
| Player Positions: | Outfielder |
| Coach Years1: | 1953–1955 |
| Coach Team1: | St. John's (Asst) |
| Coach Years2: | 1956–1973 |
| Coach Team2: | St. John's |
| Coach Years3: | 1957–1958 |
| Coach Team3: | Lexington Red Sox |
| Admin Years1: | 1973–1995 |
| Admin Team1: | St. John's |
| Overall Record: | 366–132–1 |
John Warren Kaiser (October 6, 1926 – May 25, 2022)[1] [2] 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.[3] 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.