North Sentinel Island is one of the Andaman Islands, an archipelago in the Bay of Bengal which also includes South Sentinel Island. It is home to the Sentinelese, a people who have rejected, often violently, any contact with the outside world. They are among the last uncontacted peoples to remain virtually untouched by modern civilization.

The Andaman and Nicobar Islands Protection of Aboriginal Tribes Act of 1956 prohibits travel to the island and any approach closer than five nautical miles (9.26 km) in order to prevent the resident tribespeople from contracting diseases to which they have no immunity. The area is patrolled by the Indian navy.

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