Leo Mangum
- Given Name
- Leo Allan
- Nickname(s)
- Blackie
- Born
- 5/24/1896 — Durham, NC, USA
- Died
- 7/9/1974 — Lima, OH, USA
- Weight
- 187 lbs
- Height
- 6' 1"
- Throws
- R
- Bats
- R
- Team(s)
- Chicago White Sox (1924–1925)New York Giants (1928)Boston Braves (1932–1935)
- Debut
- 1924-07-11
- Final Game
- 1935-05-11