The Bonin Islands, also known as the Ogasawara Islands, or, Yslas del Arzobispo, are an archipelago of over 30 subtropical and tropical islands in Micronesia, some 1,000 kilometres directly south of Tokyo, Japan. The name "Bonin Islands" comes from the Japanese word bunin, meaning "no people" or "uninhabited". The only inhabited islands of the group are Chichijima, the seat of the municipal government, and Hahajima. However, archeological evidence has revealed that some of the islands were prehistorically inhabited by members of an unknown Micronesian ethnicity.
Ogasawara Municipality and Ogasawara Subprefecture take their names from the Ogasawara Group. Ogasawara Archipelago is also used as a wider collective term that includes other islands in Ogasawara Municipality, such as the Volcano Islands, along with three other remote islands. Geographically speaking, all of these islands are part of the Nanpō Islands.
A total population of 2,440, 2,000 on Chichijima and 440 on Hahajima, lives in the Ogasawara Group, which has a total area of 84 square kilometres.