The Selknam Genocide was the genocide of the Selk'nam people, indigenous inhabitants of Tierra del Fuego in South America, from the second half of the 19th to the early 20th century. Spanning a period of between ten and fifteen years the Selk'nam, which had an estimated population of some three thousand saw their numbers reduced to 500.
The Selk'nam people, also known as the Ona (people of the north), were an indigenous people who inhabited the northeastern part of the archipelago of Tierra del Fuego for thousands of years before Europeans arrived. They were nomads known as "foot-people," as they did their hunting on land, rather than being seafarers.
The last full-blooded Selk'nam, Ángela Loij, died in 1974. They were one of the last aboriginal groups in South America to be reached by Europeans. According to the 2010 United Nations Educational, Scientific and Cultural Organization (UNESCO) Atlas of the World's Languages in Danger, the Ona language, believed to be part of the Chonan family, is considered extinct, as the last speakers died in the 1980s.