| Ardagh, County Donegal | |
| Settlement Type: | Townland |
| Subdivision Type: | Country |
| Subdivision Name: | Ireland |
| Unit Pref: | Metric |
| Population Density Km2: | auto |
Ardagh is a townland in the fertiledistrict known as the Laggan in East Donegal, part of County Donegal, Ireland.[1] It is very near St Johnston. It became part of the large Abercorn Estate and was settled by mainly Lowland Scots settlers during the Plantation of Ulster.