* Spanish: This is the official language of Argentina and Chile, both of which have territory in Tierra del Fuego.
* Yaghan: This is an indigenous language spoken by the Yaghan people, who are native to the southernmost tip of South America. It is critically endangered, with only a few fluent speakers remaining.
* Selk'nam: This is another indigenous language, spoken by the Selk'nam people, also known as the Ona. It is extinct, with the last known speaker dying in the 1970s.
* Kawésqar: This is an indigenous language spoken by the Kawésqar people, who lived primarily along the western coast of Tierra del Fuego. It is also critically endangered, with only a few fluent speakers remaining.
While Spanish is the most widely spoken language, the indigenous languages of Tierra del Fuego are important parts of the region's cultural heritage. Efforts are underway to revitalize these languages and preserve them for future generations.