Jeffrey Edward Heaverlo
- Bats Right, Throws Right
- Height 6' 1", Weight 215 lb.
- School University of Washington
- High School Ephrata High School
The son of Dave Heaverlo, pitcher Jeff Heaverlo was a first round draft pick by the Seattle Mariners in 1999. He remained in the M's farm system through 2005, playing four years with the AAA Tacoma Rainiers. Heaverlo missed the 2002 season with an injury.