| King's County Birr | |
|---|---|
| Former county constituency for the House of Commons | |
| 1885–1918 | |
| Seats | 1 |
| Created from | King's County |
| Replaced by | King's County |
Birr, a division of King's County, was a constituency in Ireland, returning one Member of Parliament to the United Kingdom House of Commons from 1885 to 1918.
Prior to the 1885 United Kingdom general election and after the dissolution of Parliament in 1918 the area was part of the King's County constituency.