54°55′19″N 6°57′11″W / 54.922°N 6.953°W
| County Londonderry | |
|---|---|
| Former county constituency for the Irish House of Commons | |
| County | County Londonderry |
| –1801 | |
| Seats | 2 |
| Replaced by | Londonderry County (UKHC) |
County Londonderry was a constituency represented in the Irish House of Commons until 1800.