Etymology and autonym
"Shompen" is possibly an English mispronunciation of "Shamhap", the Nicobarese name for the tribe. The Shompens living on the western side of the island call themselves Kalay, and those on the eastern side Keyet, with both groups referring to each other as Buavela.  A suggestion from 1886 that the Shompen call themselves Shab Daw'a has not been confirmed by modern research.
History of discovery
The Shompen people were known to Ptolemy and Arab geographers, but there was no reliable information before the 19th century. Danish Admiral Steen Bille was the first to contact them in 1846 and Frederik Adolph de Roepstorff, a British officer who had already published works on the languages of Nicobar and Andaman, collected ethnographic and linguistic data in 1876. Since then very little has been added to the stock of reliable information on the Shompen, mainly because access to the Nicobar Islands has been restricted for foreign researchers since Indian independence. 
|This section needs additional citations for verification. (December 2011)|
In 2001, the population was estimated at approximately 300.
They practice a hunter-gatherer subsistence economy. In keeping with the tropical climate of the islands, traditional attire includes only clothing below the waist. The traditional attire for men is a short, thin loincloth made of bark cloth, covering only the genitals without a 'tail' of cloth in front. Decoration is limited for men, consisting of bead necklaces and armbands. Women wear a knee-length skirt of bark cloth, occasionally with a shawl of bark cloth covering the shoulders. Decorations include bamboo ear plugs (ahav), bead necklaces (naigaak) and armbands of bamboo (geegap). Both sexes are barefoot. The Shompen probably learned to make and use bows from the Nicobaris. The main weapons are the bow and arrow. They do not use quivers but carry arrows by hand. Numerous types of spears, spear throwers, fire drills and a hatchet are the main tools.
A man usually carried a bow and arrows, a spear and through his loincloth belt, a hatchet, knife and fire drill. The Shompen are a hunter-gatherer subsistence people, hunting wild game such as pigs, birds and small animals while foraging for fruits and forest foods. They also keep pigs and farm yams, roots, vegetables, and tobacco. Shompen huts are built to house 4 people, and villages are made up of 4 to 5 families. Once a child is grown enough, he makes his own hut. The lowland Shompen build their huts on stilts and the walls are made of woven material on a wood frame and the roof of thatched palm fronds, and the structure is raised on stilts. The highland Shompen build their houses on the ground, and are made of the same materials as the raised houses. The interior is covered with mats, with sleeping mats on one end and tools and utensils hung on the walls and rafters. Cooking is done outside.
In the late 1980s the Shompens were living in ten groups, ranging in size from 2 to 22 individuals, scattered across the interior of the island. 
Because of their isolated way of life in the interior of the island, the Shompens were largely protected from the 2004 Indian Ocean earthquake and tsunami that devastated the coastal regions inhabited by Nicobaris and the Indian population. 
The Shompen languages, of which there are at least two, are very little known, but appear to be unrelated to Nicobarese, an isolated group of Austroasiatic languages, and perhaps even to each other. They may constitute a language isolate.
Studies of mitochondrial DNA have shown that the maternal lineage of Shompens is closest to that of Indonesians. Variations in DNA segments on the Y chromosome also reveal affinities to Austroasiatic people including the Nicobarese and Vietnamese, rather than to people from mainland India. Other researchers have described the proposal that the Shompens are "descendants of Mesolithic hunter–gatherers" as unsubstantiated.
- "List of notified Scheduled Tribes" (PDF). Census India. p. 27. Retrieved 15 December 2013.
- Weber, George. "The Shompen People". The Andaman Association. Retrieved January 2010.
- Blench, Robert. "The language of the Shom Pen: a language isolate in the Nicobar islands" (PDF). Retrieved January 2010.
- Fr. Ad. deRöepstorff (1874). "Vocabulary of dialects spoken in the Nicobar and Andaman Isles". Retrieved January 2010.
- Trivedi, Rajni; T. Sitalaximi, Jheelam Banerjee, Anamika Singh, P. K. Sircar and V. K. Kashyap (March 2006). "Molecular insights into the origins of the Shompen, a declining population of the Nicobar archipelago". Journal of Human Genetics 51 (3): 217–226. doi:10.1007/s10038-005-0349-2. PMID 16453062.
- "Nicobarese and Shompen". The Andaman Association. Retrieved January 2010.