List of islands of Wales

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Surname	Island group / location
Anglesey	Irish Sea
Bardsey Island	Gwynedd
Barry Island	Bristol Channel (linked by a dam in the 1880s)
Caldey Island	Pembrokeshire
Carreg Onnen	Pembrokeshire
Cardigan Island	Ceredigion
Church Island (Menai Strait)	Anglesey
Cribinau the church in the sea	Anglesey
Denny Island (Monmouthshire)	Bristol Channel
East Mouse	Anglesey
Flat spar	Bristol Channel
Gate spar	Pembrokeshire
Grassholm	Pembrokeshire
Holy Island (Anglesey)	Anglesey
Midland Island	Pembrokeshire
Middle Mouse	Anglesey
North Stack	Anglesey
Puffin Island	Anglesey
Ramsey Island	Pembrokeshire
St Catherine's Island	Pembrokeshire
St Margaret's Island	Pembrokeshire
St Tudwal's Island East	Saint Tudwal's Islands
St Tudwal's Island West	Saint Tudwal's Islands
Salt Island	Anglesey
Sheep Island	Pembrokeshire
Shell Island	Gwynedd
The Skerries	Anglesey
Skokholm	Pembrokeshire
Skomer	Pembrokeshire
South Stack	Anglesey
Sully Island	Vale of Glamorgan
Tusker rock	Vale of Glamorgan
West Mouse	Anglesey
Ynys Bery	Pembrokeshire
Ynys Cantwr	Pembrokeshire
Ynys Castell	Anglesey
Ynys Dulas	Anglesey
Ynys Eilun and Pont yr Eilun	Pembrokeshire
Ynys Faelog	Anglesey
Ynys Fiery	Anglesey
Ynys Gaint	Anglesey
Ynys Gored Goch	Anglesey
Ynys Gwelltog	Pembrokeshire
Ynys Llanddwyn	Anglesey
Ynys Lochtyn	Ceredigion
Yny's mothers	Pembrokeshire
Ynys Moelfre	Anglesey
Ynys Micel	Pembrokeshire
Ynys Weiliog	Anglesey
Ynys y Bîg	Anglesey