Ōsumi Islands in the context of "Kyushu"

The Ryukyu Islands (Japanese: 琉球列島, Hepburn: Ryūkyū Rettō), also known as the Nansei Islands (南西諸島, Nansei Shotō; lit. 'Southwest Islands') or the Ryukyu Arc (琉球弧, Ryūkyū-ko), are a chain of Japanese islands that stretch southwest from Kyushu to Taiwan: the Ryukyu Islands are divided into the Satsunan Islands (Ōsumi, Tokara and Amami) and Okinawa Prefecture (Daitō, Miyako, Yaeyama, Senkaku, Okinawa, Sakishima Islands (further divided into the Miyako and Yaeyama Islands), and Yonaguni as the westernmost). The larger ones are mostly volcanic islands and the smaller mostly coral. The largest is Okinawa Island.

The climate of the islands ranges from humid subtropical climate (Köppen climate classification Cfa) in the north to tropical rainforest climate (Köppen climate classification Af) in the south. Precipitation is very high and is affected by the rainy season and typhoons. Except the outlying Daitō Islands, the island chain has two major geologic boundaries, the Tokara Strait (between the Tokara and Amami Islands) and the Kerama Gap (between the Okinawa and Miyako Islands). The islands beyond the Tokara Strait are characterized by their coral reefs.

The Satsunan Islands (薩南諸島, Satsunan-shotō) is a geopolitical name for a group of islands that forms the northern part of the Ryukyu Islands. The whole island group belongs to Kagoshima Prefecture, Japan.

Ōsumi Province (大隅国, Ōsumi no Kuni; Japanese pronunciation: [o(ꜜ)ː.sɯ.mʲi (no kɯ.ɲi)]) was a province of Japan in the area of southeastern Kyushu, corresponding to the eastern half of modern Kagoshima Prefecture, and including the Ōsumi Islands . Ōsumi bordered on Hyūga to the northeast, and Satsuma Province to the northwest. Its abbreviated form was Gūshū (隅州). In terms of the Gokishichidō system, Ōsumi was one of the provinces of the Saikaidō circuit. Under the Engishiki classification system, Ōsumi was ranked as one of the "middle countries" (中国) in terms of importance, and one of the "far countries" (遠国) in terms of distance from the capital.

The Ōsumi region has developed its own distinct local dialect. Although Ōsumi is part of Kagoshima Prefecture today, this dialect is different from that spoken in the city of Kagoshima. There is a notable cultural pride in traditional poetry written in Ōsumi and Kagoshima dialects.

Yakushima (屋久島) is one of the Ōsumi Islands in Kagoshima Prefecture, Japan. The island, 504.88 km (194.94 sq mi) in area, has a population of 11,858. It is accessible by hydrofoil ferry, car ferry, or by air to Yakushima Airport.

The island is part of the town (chō) of Yakushima, which includes the neighbouring island of Kuchinoerabujima. 42% of the island is within the borders of the Yakushima National Park.