- Category: Populated Place
- Type: Hamlet
- Latitude/Longitude: 57°34'35"N 6°10'11"W
- Eastings/Northings: 150810, 861719
- OS Grid: NG508617
- Mapcode Local: GBR C84P.QQT
- Mapcode Global: WGZ79.6T8K
Location and coordinates are for the approximate centre of Greallainn within this administrative area.
Geographic features and populated places may cross administrative borders.