Tommy O'Brien
- Given Name
- Thomas Edward
- Nickname(s)
- Obie, Darby
- Born
- 12/19/1918 — Anniston, AL, USA
- Died
- 11/5/1978 — Anniston, AL, USA
- Weight
- 195 lbs
- Height
- 5' 11"
- Throws
- R
- Bats
- R
- Team(s)
- Pittsburgh Pirates (1943–1945)Boston Red Sox (1949–1950)Washington Senators (1950)
- Debut
- 1943-04-24
- Final Game
- 1950-05-13
- Gravesite
- Find-a-Grave