European Union has several member states that have a significant number of islands.
- List of islands of Bulgaria
- List of islands of Cyprus
- List of islands of Denmark
- List of islands of Estonia
- List of islands of Finland
- List of islands of France
- List of islands of Germany
- List of islands of Greece
- List of islands of Hungary
- List of islands of Italy
- List of islands of Latvia
- List of islands of Lithuania
- List of islands of Malta
- List of islands of the Netherlands
- List of islands of Poland
- List of islands of Portugal
- List of islands of Romania
- List of islands of Slovakia
- List of islands of Slovenia
- List of islands of Spain
- List of islands of Sweden