John Leslie Upham
- Bats Left, Throws Left
- Height 6' 0", Weight 180 lb.
- High School Assumption High School
- Debut April 16, 1967
- Final Game September 25, 1968
- Born December 29, 1941 in Windsor, ON CAN
John Upham was used as both a pitcher and outfielder for the Chicago Cubs during parts of the 1967 and 1968 seasons. Upham fared better as a hitter in 1967 going 2 for 3 at the plate, while giving up 5 runs in one inning and one third on the mound. In 1968 he was better at pitching, giving up no runs in 7 innings while going 2 for 10 at the plate. He started a game in center field on August 18, 1968.