John W. Kaiser
- Bats Right, Throws Right
- Height 5' 10", Weight 175 lb.
- School St. John's University
- High School St. John's Preparatory School
- Born October 6, 1926 in Brooklyn, NY USA
- Died May 25, 2022
Jack Kaiser was the head coach at St. John's University from 1956 to 1973, athletic director from 1973 to 1995, and is currently the Athletic Director Emeritus. He played for St. John's in the 1949 College World Series, and coached them in the 1960 College World Series, 1966 College World Series, and 1968 College World Series. He managed Team USA to Bronze in the 1973 Intercontinental Cup and coached for them when they took Silver in the 1969 Amateur World Series.
The Red Storm play at Jack Kaiser Stadium.
He played in the Boston Red Sox system from 1950 to 1953, hitting .289 in 372 games.