- Language: Tapiete
- Alternate names: Chiriguano, Ava, Simba, Chané, Izoceño [Isosó, Izozó],
- Language code: tpj
- Language family: Tupian, Tupí-Guaraní, Guaraní Guaraní (SIL classification)
- Number of speakers: 207
- Vulnerability: Endangered
Traditional religion, Christian.
There is considerable confusion about different Guaranían languages and varieties, several of which are sometimes called "Ñandeva (Nhandeva) as at least one of their alternate names. It is sometimes difficult to determine from reports which are the same with varying names and which are different with the same name. For cases involving overlapping names, Rodrigues and Cabral (2012:498) have among several others in their Guaraní Branch of Tupían: Kaiwá (Kayowá, Kaiowá, Caiová, Caiguá, Pãi, Pãi-Tavyterã) Brazil, ParaguayNhandéva (Ñandeva, Chiripá) Brazil, ParaguayChiriguano (Ava, Simba) Argentina, Bolivia, Paraguay Tapiete Bolivia (Argentina)Ethnologue has: Kaiwá [kgk] (Caingua, Caiua, Caiwa, Cayua, Kaiova, Kaiowá, Kayova)Ava Guaraní [nhd] (Apytare, Ava, Chiripá, Tsiripá, Txiripá)Pai Tavytera [pta] (Ava, Pai, Tavytera)Ñandeva [tpj] (Guasurango, Guasurangue, Ñanagua, Nandeva, Tapiete, Tirumbae, Yanaigua)Ethnologue calls this language Ñandeva [tpj] (Guasurango, Guasurangue, Ñanagua, Nandeva, Tapiete, Tirumbae, Yanaigua); it may include varieties or languages others align not with this language but with others).Dietrich (2007) considers the Chiriguano group to be composed of various dialects, with Tapiete a separate but very closely related language. Simba, Chané, and Izoceño are subdialects of Ava; the Chané are the modern decendants of Izoceño.