54°08′42″N 6°17′49″W / 54.145°N 6.297°W
| South Down | |
|---|---|
| Former County constituency for the Parliament of Northern Ireland | |
| Former constituency | |
| Created | 1929 |
| Abolished | 1973 |
| Election method | First past the post |
South Down was a constituency of the Parliament of Northern Ireland.