Duffy Dyer
- Given Name
- Don Robert
- Nickname(s)
- Duf, Duffy
- Born
- 8/15/1945 — Dayton, OH, USA
- Weight
- 187 lbs
- Height
- 6' 0"
- Throws
- R
- Bats
- R
- Team(s)
- New York Mets (1968–1974)Pittsburgh Pirates (1975–1978)Montreal Expos (1979)Detroit Tigers (1980–1981)
- Debut
- 1968-09-21
- Final Game
- 1981-04-15