| County Westmeath | |
|---|---|
| Former county constituency for the House of Commons | |
| County | County Westmeath |
| 1801–1885 | |
| Seats | 2 |
| Created from | County Westmeath (IHC) |
| Replaced by | North Westmeath and South Westmeath |
| 1918–1922 | |
| Seats | 1 |
| Created from | North Westmeath and South Westmeath |
| Replaced by | Longford–Westmeath (Dáil Éireann) |
County Westmeath is a former UK Parliament constituency in Ireland, returning two Members of Parliament from 1801 to 1885 and one from 1918 to 1922.