- Category: Water Feature
- Type: Inland Water
- Latitude/Longitude: 53°4'20"N 4°1'46"W
- Eastings/Northings: 264130, 354732
- OS Grid: SH641547
- Mapcode Local: GBR 5T.BKN4
- Mapcode Global: WH552.21GC
Location and coordinates are for the approximate centre of Llyn Teyrn within this administrative area.
Geographic features and populated places may cross administrative borders.