John Gerald Siegert
- Bats Left, Throws Left
- Height 6' 0", Weight 175 lb.
- School University of Southern California
- High School Susan Miller Dorsey High School
- Born ~1937
- Died December 23, 2017 in San Diego, CA USA
First baseman Jerry Siegert played in the Boston Red Sox system from 1958 to 1960. He hit .260 with 9 home runs in 230 games. He was selected as an American Baseball Coaches Association All-American while at University of Southern California in 1958.