The largest island in Europe is Greenland. Though geographically it is often associated with North America, politically it is considered part of the Kingdom of Denmark. With an area of about 2,166,086 square kilometers, Greenland surpasses all other European islands in size.
However, if we are speaking strictly about islands that are fully part of Europe and not associated with any other continent, then the largest would be Great Britain, with an area of approximately 209,331 square kilometers. Great Britain’s size makes it the largest island in the British Isles and a significant part of continental Europe.
It’s important to clarify the distinction, as the definition of ‘largest island in Europe’ can lead to different answers depending on geographic and political considerations.