- Category: Water Feature
- Type: Island
- Latitude/Longitude: 57°35'26"N 7°32'2"W
- Eastings/Northings: 69471, 869127
- OS Grid: NF694691
- Mapcode Local: GBR 78SN.PWF
- Mapcode Global: WGV23.7GLR
Location and coordinates are for the approximate centre of Holaisgeir within this administrative area.
Geographic features and populated places may cross administrative borders.