Poitevin–Saintongeais (French pronunciation: [pwatvɛ̃ sɛ̃tɔ̃ʒɛ]; endonym: poetevin-séntunjhaes; also called Parlanjhe, Aguiain or Aguiainais in French) is a language spoken in the regions of the Pays de la Loire and Nouvelle-Aquitaine. Poitevin–Saintongeais is officially recognised by the French Ministry of Culture as a language with two dialects: Poitevin and Saintongeais. The language belongs to the langues d'oïl subbranch of the Gallo-Romance languages.
Some descendants of Poitevin–Saintongeais speakers became the Acadian people of Atlantic Canada as well as the Cajun people of Louisiana.