island group, Andaman and Nicobar Islands union territory, India. The Nicobar Islands lie in the Indian Ocean about 800 miles (1,300 km) east of Sri Lanka and have an area of 711 square miles (1,841 square km). The Nicobars, along with the Andaman Islands to the north, constitute the boundary between the southeastern Bay of Bengal (Bengal, Bay of) (west) and the Andaman Sea (east). The Nicobar group includes the islands of Car Nicobar (north), Camorta (Kamorta) and Nancowry (central group), and Great Nicobar (south).

Though very little is known about the islands' earliest history, the Thanjavur inscription (1050 CE) of the Chola dynasty describes the land as Nakkavaram (“Land of the Naked”). Danish missionaries visited the islands in 1756. In 1868–88 the islands were claimed by the British, who established a penal colony there. The Nicobar Islands were occupied by the Japanese during World War II. In December 2004 the islands were hit by a large tsunami that had been triggered by a massive earthquake in the Indian Ocean near Indonesia. The Nicobars suffered extensive damage, and many people were killed.

Car Nicobar is flat with rich, fertile soils. Nancowry, Camorta, and Great Nicobar are hilly. The highest peak is Mount Thullier, rising to 2,106 feet (642 metres) on Great Nicobar. The islands are densely forested with coconut and betel-nut palms and pandanus, mango, margosa, and beefwood (Casuarina) trees. The population consists mostly of two ethnic groups, the Nicobarese and the Shompens. Agriculture is the principal occupation; crops include rice, corn (maize), fruits, vegetables, coconuts, and betel nuts. Copra (dried coconut) making and oil pressing are the chief industries. The only important town is on Car Nicobar.