- Category: Populated Place
- Type: Village
- Latitude/Longitude: 52°3'32"N 4°19'5"W
- Eastings/Northings: 241165, 242615
- OS Grid: SN411426
- Mapcode Local: GBR DF.DKJQ
- Mapcode Global: VH3KJ.3HGV
Location and coordinates are for the approximate centre of Pentrellwyn within this administrative area.
Geographic features and populated places may cross administrative borders.