Ynys Llanddwyn

Ynys Llanddwyn
Tŵr Bach lighthouse with Snowdonia in background
Ynys Llanddwyn Location within Anglesey
Area	0.3 km2 (0.12 sq mi)
Population	0
• Density	0/km2 (0/sq mi)
OS grid reference	SH 3884 6288
Community	Rhosyr
Principal area	Isle of Anglesey
Preserved county	Gwynedd
Country	Wales
Sovereign state	United Kingdom
Post town	Llangefni
Postcode district	LL61
Dialling code	01248
Police	North Wales
Fire	North Wales
Ambulance	Welsh
UK Parliament	Ynys Môn
Senedd Cymru – Welsh Parliament	Ynys Môn
List of places UK Wales Anglesey 53°08′15″N 04°24′45″W / 53.13750°N 4.41250°W / 53.13750; -4.41250

Ynys Llanddwyn (also known as Llanddwyn Island) is a small tidal island off the west coast of Anglesey (Welsh: Ynys Môn), northwest Wales. The nearest settlement is the village of Newborough.