- Category: Geographic Feature
- Type: Hill or Mountain
- Latitude/Longitude: 53°18'48"N 4°40'32"W
- Eastings/Northings: 221854, 382945
- OS Grid: SH218829
- Mapcode Local: GBR GMTY.C1V
- Mapcode Global: WH314.4ZS8
Location and coordinates are for the approximate centre of Holyhead Mountain within this administrative area.
Geographic features and populated places may cross administrative borders.