The present text is a geossociolinguistic study of the portuguese spoken by the Asuriní do Xingu and the Araweté. The research have considered the recent geolinguistic studies in indigenous territories, the atlas of the Guaranitic zones (Atlas Lingüístico Guaraní-Románico, ALGR) and the atlas of portuguese of indigenous areas (Atlas Linguístico do Português em Áreas Indígenas, ALIPAI), for the definition of its theme which is the portuguese lexical variety of Tupí-Guaraní indigenous societies. The study aims to map part of the lexical diversity of the portuguese of the Asuriní do Xingu and the Araweté. The research is justified because the portuguese of the two indigenous ethnic groups has never been registered nor interpreted by a variationist approach. The data were collected through the semantic-lexical questionnaire of the Linguistic Atlas of Brazil from 4 indigenous collaborators per village, 2 Araweté villages, Ipixuna and Pakaña, and 2 Asuriní villages, Itaaka and Kwatinemu. That is, 16 people in total and four communities. The indigenous collaborators were stratified by sex (men and women) and age group (young people and middle-age people). After data collection, they were treated and mapped. The results show that the Asuriní do Xingu society presents more lexical diversity in relation to the Araweté society for the investigated portuguese and that the young men of these two societies are the social profile that most presents lexical variation. Thus, the Asuriní do Xingu and the Araweté present different levels of lexical knowledge in portuguese as well as the speakers of each ethnic group present different levels of that knowledge within their societies that undergo sociolinguistic influences of the surroundings, geographic influences and influences of socio-cultural factors of these two people
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