Birr may refer to:
Places
- Birr, County Offaly, a town in Ireland
- Birr Castle, a castle in Birr, Ireland
- Birr (UK Parliament constituency), a UK parliamentary constituency in what is now County Offaly, 1885–1918
- Birr, Ontario, a community in Middlesex Centre, Ontario, Canada
- Birr, Switzerland, a municipality in Aargau, Switzerland
People
- Jim Birr (1916–2006), American professional basketball player
- Kevin Birr (born 1969), American curler
- Todd Birr (born 1968), American curler
Other
- Ethiopian birr, the currency of Ethiopia
- Birr RFC, a rugby club in the Irish town
- Synod of Birr, in the Irish town, in 697
- Birr Aerodrome, near the Irish town
See also
- Bier (disambiguation)
- Burr (disambiguation)