- Category: Water Feature
- Type: Inland Water
- Latitude/Longitude: 52°48'52"N 3°55'51"W
- Eastings/Northings: 269968, 325875
- OS Grid: SH699258
- Mapcode Local: GBR 5Y.VRMH
- Mapcode Global: WH568.LJD1
Location and coordinates are for the approximate centre of Llyn y Frân within this administrative area.
Geographic features and populated places may cross administrative borders.