- Category: Water Feature
- Type: Island
- Latitude/Longitude: 53°17'44"N 4°37'34"W
- Eastings/Northings: 225074, 380864
- OS Grid: SH250808
- Mapcode Local: GBR GMYZ.PPV
- Mapcode Global: WH31B.XF76
Location and coordinates are for the approximate centre of Ynys Gybi within this administrative area.
Geographic features and populated places may cross administrative borders.