| South Monaghan | |
|---|---|
| Former county constituency for the House of Commons | |
| 1885–1922 | |
| Seats | 1 |
| Created from | Monaghan |
| Replaced by | Monaghan |
South Monaghan was a parliamentary constituency in Ireland, returning one Member of Parliament (MP) to the House of Commons of the Parliament of the United Kingdom, from 1885 to 1922.
Prior to the 1885 general election the area was part of the Monaghan constituency. From 1922, on the establishment of the Irish Free State, it was not represented in the UK Parliament.