- Category: Water Feature
- Type: Bay
- Latitude/Longitude: 53°8'13"N 4°23'29"W
- Eastings/Northings: 240121, 362670
- OS Grid: SH401626
- Mapcode Local: GBR 5C.67PW
- Mapcode Global: WH43C.JD1W
Location and coordinates are for the approximate centre of Llanddwyn Bay within this administrative area.
Geographic features and populated places may cross administrative borders.