Nakanoshima is one of the Dōzen Islands in the Oki archipelago in the Sea of Japan. It is also known as Ama-tō. The island, 32.21 km² in area, has a population of approximately 2,400 persons. The island is administered by the town of Ama in Shimane Prefecture. Much of the island is within the borders of Daisen-Oki National Park.
