Amami Ōshima, also known as Amami, is the largest island in the Amami archipelago between Kyūshū and Okinawa. It is one of the Satsunan Islands.
The island, 712.35 km² in area, has a population of approximately 73,000 people. Administratively it is divided into the city of Amami, the towns of Tatsugō, Setouchi, and the villages of Uken and Yamato in Kagoshima Prefecture. Much of the island is within the borders of the Amami Guntō National Park.
In 2021, it was listed as part of the serial UNESCO World Heritage Site of Amami-Ōshima Island, Tokunoshima Island, northern part of Okinawa Island, and Iriomote Island.