This is a list of islands of Turkey. There are around 500 islands and islets in Turkey. These islands are located in the Aegean Sea, Black Sea, Mediterranean Sea, Sea of Marmara, and Turkish lakes. The Turkish words for island/islands are ada/adalar. The largest Turkish island is Gökçeada in the Aegean Sea with an area of 297 km2. The lists in the following sections include the islands' names, formal names if different, provinces, seas where they are located, and coordinates.

Islands by body of water

Aegean Sea islands

The following islands are in the Aegean Sea:

Aydın Province

Balıkesir Province

There are at least 54 islands in Balıkesir Province, including islands in the Aegean Sea and the Sea of Marmara. Many of the islands in the Aegean Sea are part of the Ayvalık Islands Nature Park which contains 22 islands and numerous rocks. The only two populated Aegean islands are Cunda Island and Lale Island. Cunda Island, which is now a peninsula, is the largest. The following islands of Balıkesir Province are in the Aegean Sea:

Çanakkale Province

İzmir Province

Muğla Province

Black Sea islands

Mediterranean Sea islands

The following islands are in the Mediterranean Sea:

Sea of Marmara islands

The largest island in the Sea of Marmara is Marmara Island with an area of 117.8 km2. The following Turkish islands are in the Sea of Marmara:

Lake islands

One Turkish lake, Lake Van, has islands, including the following:

Notes or disputes