- Category: Geographic Feature
- Type: Valley
- Latitude/Longitude: 53°3'12"N 4°13'26"W
- Eastings/Northings: 251042, 353007
- OS Grid: SH510530
- Mapcode Local: GBR 5L.CLFL
- Mapcode Global: WH54Z.2HWZ
Location and coordinates are for the approximate centre of Dyffryn Nantlle within this administrative area.
Geographic features and populated places may cross administrative borders.