- Category: Water Feature
- Type: Island
- Latitude/Longitude: 59°5'48"N 6°9'7"W
- Eastings/Northings: 162321, 1030710
- OS Grid: HW623307
- Mapcode Local: GBR C46P.DWR
- Mapcode Global: WGYZY.GMQ7
Location and coordinates are for the approximate centre of Thamna Sgeir within this administrative area.
Geographic features and populated places may cross administrative borders.