- Category: Geographic Feature
- Type: Valley
- Latitude/Longitude: 51°35'11"N 3°37'46"W
- Eastings/Northings: 287189, 188760
- OS Grid: SS871887
- Mapcode Local: GBR HB.C7QD
- Mapcode Global: VH5H4.1DG6
Location and coordinates are for the approximate centre of Llynfi Valley within this administrative area.
Geographic features and populated places may cross administrative borders.