
Capri is an island located in the Tyrrhenian Sea off the Sorrento Peninsula, on the south side of the Gulf of Naples in the Campania region of Italy. The main town Capri that is located on the island shares the name. It has been a resort since the time of the Roman Republic.
Gaiola Island is one of the minor islands of Naples, off the city's Posillipo residential quarter, in the Metropolitan City of Naples and Campania region, southwestern Italy. It is located whitin the "Parco sommerso di Gaiola".

Ischia is a volcanic island in the Tyrrhenian Sea. It lies at the northern end of the Gulf of Naples, about 30 kilometres from the city of Naples. It is the largest of the Phlegrean Islands. Roughly trapezoidal in shape, it measures approximately 10 km east to west and 7 km north to south and has about 34 km of coastline and a surface area of 46.3 square kilometres (17.9 sq mi). It is almost entirely mountainous; the highest peak is Mount Epomeo, at 788 metres. The island is very densely populated, with 60,000 residents.

Nisida is a volcanic islet of the Flegrean Islands archipelago, in southern Italy. It lies at a very short distance from Cape Posillipo, just north of Naples; it is now connected to the mainland by a stone bridge. The islet is almost circular, with a flooded crater forming the bay of Porto Paone on the southwest coast. It has a diameter of about 0.5 kilometres and a highest altitude of 105 metres.

The Phlegraean Islands is an archipelago in the Gulf of Naples and the Campania region of southern Italy.

Procida is one of the Flegrean Islands off the coast of Naples in southern Italy. The island is between Cape Miseno and the island of Ischia. With its tiny satellite island of Vivara, it is a comune of the Metropolitan City of Naples, in the region of Campania.

The Sirenusas, also known as the Gallos, are an archipelago of little islands off the Amalfi Coast of Italy between Isle of Capri and 6 km (4 mi) southwest of Province of Salerno's Positano, to which it is administratively attached. They are part of the Campanian Archipelago. The name, Sirenuse, is a reference to the mythological sirens said to have lived there.

Vivara is a satellite islet of Procida, one of the three main islands in the Gulf of Naples.