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The Fuegian languages are the indigenous languages historically spoken in Tierra del Fuego by Native Americans. Adelaar lists the Fuegian languages as the Kawésqar language, the Ona language and the Yaghan language in addition to Chono, Gününa Yajich , and the Tehuelche language.
Based on current data, the languages are not considered part of the same language family or linguistic area. Though possible genetic relationships have been proposed to categorize them, "more complete descriptions and more detailed comparative studies are needed" before any claim can be made about a genetic relationship. The current consensus is that Kawésqar, Yaghan, and Chono are language isolates and Ona is one of the Chon languages, along with Tehuelche and Gününa Yajich.