- Category: Water Feature
- Type: Island
- Latitude/Longitude: 58°20'40"N 6°38'16"W
- Eastings/Northings: 128718, 948913
- OS Grid: NB287489
- Mapcode Local: GBR B60N.SDL
- Mapcode Global: WGX14.0JBD
Location and coordinates are for the approximate centre of Sgeir Holaback within this administrative area.
Geographic features and populated places may cross administrative borders.