Heinie Heitmuller
- Given Name
- William Frederick
- Nickname(s)
- Heinie
- Born
- 5/25/1883 — San Francisco, CA, USA
- Died
- 10/8/1912 — Los Angeles, CA, USA
- Weight
- 215 lbs
- Height
- 6' 2"
- Throws
- R
- Bats
- R
- Team(s)
- Philadelphia Athletics (1909–1910)
- Debut
- 1909-04-26
- Final Game
- 1910-07-23