Lligwy Bay (Welsh: Traeth Lligwy) is a bay of the Welsh island of Anglesey.
It is on the eastward side of the island to the north of the village of Moelfre. It was the site, in October 1859, of the loss of the steam clipper Royal Charter with a loss of life in excess of 450.
The bay is very popular with windsurfers and other windpowered watersport enthusiasts. There is a pay and display carpark at the end of a road leading right down to the beach.
Coordinates: 53°21′43″N 4°15′36″W / 53.36204°N 4.26010°W