Mbya may refer to: Mbayá, a historic ethnic group of Paraguay, Bolivia and Brazil Mbyá Guaraní people, an ethnic group of Paraguay, Brazil, Argentina, and Uruguay Mbyá Guaraní language, a Guarani language of Argentina, Brazil, and Paraguay Sirionó language, a Guarayu language of Bolivia
See also Kadiweu language or Mbayá, a Guaicuruan language of Brazil Mbia (disambiguation)