Bill Dahlen
- Given Name
- William Frederick
- Nickname(s)
- Bad Bill
- Born
- 1/5/1870 — Nelliston, NY, USA
- Died
- 12/5/1950 — Brooklyn, NY, USA
- Weight
- 180 lbs
- Height
- 5' 9"
- Throws
- R
- Bats
- R
- Team(s)
- Chicago Colts (1891–1897)Chicago Orphans (1898)Brooklyn Superbas (1899–1910)New York Giants (1904–1907)Boston Doves (1908–1909)Brooklyn Dodgers (1911)
- Debut
- 1891-04-22
- Final Game
- 1911-10-12
- Gravesite
- Find-a-Grave