| Monastery information | |
|---|---|
| Established | 6th century |
| Diocese | Diocese of Clogher |
| People | |
| Founder(s) | St. Ninnidh |
| Site | |
| Location | Lough Erne, Enniskillen, County Fermanagh |
Coordinates: 54°26′08″N 07°44′43″W / 54.43556°N 7.74528°W
Inishmacsaint (Irish: Inis-maige-samh, meaning "Island of the Sorrel Plain") is a monastery located on an island off the western shore of Lough Erne, County Fermanagh, Northern Ireland. The site includes the ruins of a monastic church and an early stone cross, probably from the tenth and twelfth centuries. Inishmacsaint was founded by St. Ninnidh, (d. 523/30). The original monastic buildings were probably damaged or destroyed during the raids of the ninth or tenth centuries.