Sanavirones

This is a list of Indigenous languages that are or were spoken in the present territory of Argentina.

Although the official language of Argentina is Spanish, several Indigenous languages are in use. Most are spoken only within their respective indigenous communities, some with very few remaining speakers. Others, especially Aymara, Quechua (South Bolivian Quechua and Santiago del Estero Quichua), Toba (Qom) and Guaraní (Western Argentine Guaraní, Paraguayan Guaraní, Mbyá Guaraní), are alive and in common use in specific regions. Finally, some such as Abipón and Yaghan, are now completely extinct. Since 2004 the Guaraní language is official, together with Spanish, in the northeastern Corrientes Province.

[+] Dubious. Fabre states (with convincing arguments) that no Kaiwá live in Argentina. [*] Some authors give this languages as extinct. (?) Tentative classification

A large number of languages once spoken in Argentina have disappeared. According to Censabella (1999), two thirds of the languages spoken when the Spaniards arrived became extinct. In some cases, the languages disappeared along with the ethnic groups that spoke them; in other, the acculturation and transculturation phenomena associated with deep changes in the living conditions of the indigenous peoples caused the extinction, even if a number of individuals of the ethnical group still survive.

...
Wikipedia