| County Louth | |
|---|---|
| Former county constituency for the House of Commons | |
| County | County Louth |
| 1801–1885 | |
| Seats | 2 |
| Created from | Louth County |
| Replaced by | North Louth and South Louth |
| 1918–1922 | |
| Seats | 1 |
| Created from | North Louth and South Louth |
| Replaced by | Louth–Meath |
County Louth, otherwise known as Louth County or Louth, is a former parliamentary constituency in Ireland, which was represented in the House of Commons of the Parliament of the United Kingdom. From 1801 to 1885 it returned two Members of Parliament (MPs), and one from 1918 to 1922.