- The Aeolian Islands: A volcanic archipelago north of Sicily off the northeast coast of Italy.
- The Egadi Islands: Three islands off the western coast of Sicily.
- The Tremiti Islands: An archipelago group about 12 miles from the coast of the south-eastern Gargano Peninsula in the Adriatic Sea.
- The Pelagie Islands: Two small islands and several smaller islets between Sicily and Tunisia, south of Malta.
- The Pontine Islands: Two groups of volcanic islands off the coast of Lazio, southwest of Rome and northwest of Naples.
- The Tuscan Archipelago: A group of islands off the west coast of Italy including the islands of Elba, Capraia, Gorgona, Pianosa, Montecristo and Giglio.
- The Venetian Lagoon: A group of 118 islands that separate the Venetian Lagoon from the Adriatic Sea.
- The Sardinian Archipelago: A group of islands surrounding Sardinia, including Sant'Antioco, Asinara, San Pietro, Caprera, Maddalena, Tavolara.