Tupi–Guarani (/tuːˈpiː ɡwɑˈrɑːni/ /ɡwɑˈɾɑ-/; Tupi-Guarani: [tuˈpi ɡwaɾaˈni];pronunciationⓘ) is the most widely distributed subfamily of the Tupian languages of South America.

The words petunia, jaguar, piranha, ipecac, tapioca, jacaranda, anhinga, carioca, and capoeira are of Tupi–Guarani origin.

Sound changes from Proto-Tupi-Guarani (PTG) defining each of the 8 Tupi-Guarani groups as listed by Rodrigues & Cabral (2002):[1] Michael, et al. (2015) propose the following classification for the Tupi–Guarani languages.

O'Hagan et al. (2014,[2][3] 2019) proposes that Proto-Tupi-Guarani was spoken in the region of the lower Tocantins and Xingu Rivers, just to the south of Marajó Island in eastern Pará State, Brazil.

Below is an internal classification of Tupi-Guarani by Jolkesky (2016), which is largely based on Michael, et al. (2015):[4] († = extinct) The following is an approximation of the results of a computational phylogenetic study of the Tupí-Guaraní languages by Ferraz and Reichert (2021).