- Category: Water Feature
- Type: Island
- Latitude/Longitude: 52°55'27"N 4°7'36"W
- Eastings/Northings: 257118, 338431
- OS Grid: SH571384
- Mapcode Local: GBR 5Q.MS07
- Mapcode Global: WH55L.LR1L
Location and coordinates are for the approximate centre of Ynys Tywyn within this administrative area.
Geographic features and populated places may cross administrative borders.