The Nicobar 'nIk@bɑːr Islands are an archipelagic island chain in the eastern Indian Ocean. They are located in Southeast Asia, northwest of Aceh on Sumatra, and separated from Thailand to the east by the Andaman Sea. Located southeast of the Indian subcontinent, across the Bay of Bengal, they are part of India, as the Nicobar district within the union territory of the Andaman and Nicobar Islands.
UNESCO has declared the Great Nicobar Island as one of the World Network of Biosphere Reserves.
The Nicobar Islands cover a land area of and had a population of 36,844 during the 2011 Census. They comprise three distinct groups:
Northern Group:
Car Nicobar
Battimalv
Central Group:
Chowra, Chaura or Sanenyo
Teressa or Luroo
Bompuka or Poahat
Katchal
Camorta
Nancowry or Nancowrie
Trinket
Laouk or "Isle of Man"
Tillangchong
Southern Group (Sambelong):
Great Nicobar (, largest island of the Nicobars)
Little Nicobar
Kondul Island
Pulo Milo or Pillomilo (Milo Island)
Meroe, Trak, Treis, Menchal, Kabra, Pigeon and Megapod
Indira Point () is the southernmost point of Great Nicobar Island and also of India itself, lying about north of Sumatra, Indonesia.
The Nicobar Islands are part of a great island arc created by the collision of the Indo-Australian Plate with Eurasia. The collision lifted the Himalayas and most of the Indonesian islands, and created a long arc of highlands and islands, which includes the Arakan Yoma range of Burma, the Andaman and Nicobar islands, and the islands off the west coast of Sumatra, including the Banyak Islands and Mentawai Islands.
The climate is warm and tropical, with temperatures ranging from . Rainfall is heavy due to annual monsoons and measures around each year.
The Nicobar Islands are recognised as a distinct terrestrial ecoregion, the Nicobar Islands rain forests, with many endemic species.
The vegetation of the Nicobars is typically divided into the coastal mangrove forests and the interior evergreen and deciduous tropical and subtropical moist broadleaf forests.