- Category: Water Feature
- Type: Inland Water
- Latitude/Longitude: 52°28'28"N 3°33'43"W
- Eastings/Northings: 293994, 287453
- OS Grid: SN939874
- Mapcode Local: GBR 9G.K7LN
- Mapcode Global: VH5BX.62P7
Location and coordinates are for the approximate centre of Llyn y Fan within this administrative area.
Geographic features and populated places may cross administrative borders.