Denmark and Greece most likely have the most islands, but the United Kingdom is full of islands as well, specifically in Scotland.
The southern most island in Europe is the Island of Gavdos. It is located off the southern coast of Crete.
The Orkney Islands are part of Scotland.
Greece
Spain.
Bahrain is a Middle Eastern country comprised of an archipelago of 33 islands.
Ireland does have many islands, but so do some other European countries, particularly Greece.
Indonesia is a country located in Southeast Asia and comprised of almost 14,000 islands. It is thought that there are 13,466 islands in this country, but it is possible that there are more.
Norway
These islands are about 10 miles south of Iceland.
The Falkland Islands are in South America not Europe and belong to Argentina.
They are claimed by Argentina.
Portugal.