Fuegian languages refers to mainly to three languages spoken in Tierra del Fuego

Tierra del Fuego

Tierra del Fuego is an archipelago off the southernmost tip of the South American mainland, across the Strait of Magellan. The archipelago consists of a main island Isla Grande de Tierra del Fuego divided between Chile and Argentina with an area of , and a group of smaller islands including Cape...

 by native Americans; the Kawésqar language

Kawésqar language

Kawésqar is an Alacalufan language spoken in southern Chile by the Kawésqar people. Originally there were several distinct dialects...

, the Ona language

Ona language

Ona , also known as Selk'nam , is a language that was once spoken by the Selknam people in Isla Grande de Tierra del Fuego in southernmost South America. there were 1-3 speakers left. 2000 estimates place it as "probably extinct."...

 and the Yaghan language

Yaghan language

Yagán , also known as Yámana and Háusi Kúta, is one of the indigenous languages of Tierra del Fuego, spoken by the Yagán people...

.

The term can be regarded as a collective name, but currently there is no evidence that they are related to each other. The Kawésqar and Yaghan languages are considered language isolate

Language isolate

A language isolate, in the absolute sense, is a natural language with no demonstrable genealogical relationship with other languages; that is, one that has not been demonstrated to descend from an ancestor common with any other language. They are in effect language families consisting of a single...

s while Ona (Selk'nam) language belongs to the Chon languages

Chon languages

-External links:*Alain Fabre, 2005, Diccionario etnolingüístico y guía bibliográfica de los pueblos indígenas sudamericanos: CHON...

.