Iyo'wujwa (Chorote) is a Matacoan language spoken by about 2,000 people, mostly in Argentina where it is spoken by about 1,500 people; 50% of whom are monolingual.
Alternate names include: Choroti, Manjuy, and Manjui.
There are about 650 speakers in Paraguay and 8 in Bolivia. Of the 650 in Paraguay, approximately 480 are considered monolingual. These speakers in Paraguay only refer to themselves as Manjui or Inkijwas. They refer to the ones residing in Argentina as the Iyo'wujwas, though some who reside with these people in Argentina have migrated from Paraguay. Most of the Manjui under 40 years old can read and write in their own language and were taught in their own schools. The principal location of these people is a settlement called Santa Rosa, in the province of Boquerón. Other locations include Mcal. Estigarribia, Pedro P. Peña, and Yakaquash.