| County Roscommon | |
|---|---|
| Former county constituency for the House of Commons | |
| County | County Roscommon |
| 1801–1885 | |
| Seats | 2 |
| Created from | County Roscommon (IHC) |
| Replaced by | North Roscommon and South Roscommon |
County Roscommon was a UK Parliament constituency in Ireland. The constituency sent two MPs to Westminster from the Acts of Union 1800 until the constituency was split into Roscommon North and Roscommon South in 1885.