Geoffrey Edward Blum
- Bats Both, Throws Right
- Height 6' 3", Weight 195 lb.
- School University of California
- High School Chino High School
- Debut August 9, 1999
- Final Game July 17, 2012
- Born April 26, 1973 in Redwood City, CA USA
Blum became the second player to hit a home run in the only World Series plate appearance of his career, after Jim Mason.