Hachijō-jima

is a volcanic island of Japan in the Pacific Ocean. It is about south of the special wards of Tokyo. It is part of the Izu archipelago and within the Fuji-Hakone-Izu National Park. Its only municipality is Hachijō. On 1 March 2018, its population was 7,522 people living on 63 km2. Some inhabitants speak Hachijō language, which is considered an endangered language and the number of speakers is unknown. The island has been inhabited since the Jōmon period, and was used as a place of exile during the Edo period. In modern times, it has been used for farming sugarcane and housing a secret submarine base during World War II; it is now a tourist destination within Japan.

Hachijō-jima receives about of precipitation annually. With a humid subtropical climate, and an average high temperature of , the island and the surrounding ocean support a wide variety of sea life, birds, mammals, plants, and other life. The tallest peak within the Izu Islands, a Class-C active volcano, is located there. Transportation to the island is either by air or ferry. There are many Japanese-style inns, hot spring resorts, and hotels to accommodate tourists and visitors. The island is a popular destination for surfers, divers and hikers. It has several local variations on Japanese foods, including shimazushi and kusaya, as well as many dishes that include the local plant ashitaba.