The Yanyuwa people are an Indigenous Australian people of the Northern Territory who live in the coastal region inclusive of and opposite to the Sir Edward Pellew Group of Islands in the southern Gulf of Carpentaria.
The Yanyuwa language belongs to the Pama–Nyungan language family. Many Yanyuwa have also been bilingual in the Garrwa language. The retention of their language as with Garrwa has been attributed to the relative disinterest of colonizing whites in the lands both of these tribes traditionally inhabited. Taking as his starting point an observation by Edward Sapir concerning the Yahi dialect of Yana, who considered the gendered distinction in language use between Yanna men and women as very rare, or not as pervasive as in this dialect, John Bradley showed that in Yanyuwa, the differentiation was at least as structurally thorough as in Yahi. The gendered linguistic difference between liyi-wulu-wu (speech for men) and liyi nhanawaya-wu (speech for women) affected noun classes, verbs and pronouns, and in their creation stories, this distinction was maintained by male and female spirits. Raised predominantly by the women, boys spoke the women's dialect until initiation, whereupon they were obliged by custom not to speak as if they had breasts and vaginas. Neighbouring tribes, speakers of Marra, Garrwa and Gurdanji consider Yanyuwa difficult precisely for this gendered difference in grammar, whereas the Yanyuwa, conversely, have no difficulty in mastering the latter languages. Two exceptions exist, in ribald talk, and in certain songline cycles where male figures use female speech, though the reason is not known. Bradley's conclusion is:
The reasons as to why two distinct dialects for female and male speakers developed are lost in time., This feature has however served to make Yanyuwa a language unique within Aboriginal Australia, if not the world.