List of islands of the United Kingdom

This article does not cite any sources. Please help improve this article by adding citations to reliable sources. Unsourced material may be challenged and removed. Find sources: "List of islands of the United Kingdom" – news · newspapers · books · scholar · JSTOR (November 2021) (Learn how and when to remove this message)

This is a list of islands of the United Kingdom. The United Kingdom of Great Britain and Northern Ireland has thousands of islands within its territory and several external territories. This is a list of selected British islands grouped by constituent country or overseas territory. The largest British island is Great Britain, which forms a substantial majority of the United Kingdom and is the ninth-largest island in the world.