Peire de Castelnou (troubadour)

Peire de Castelnou (also Castelnau or Chasselnou, Pierre de Châteauneuf) was a minor troubadour from Provence. He was a client of the lords of Baux. His one surviving piece, Oimais no·m cal far plus long'atendensa, is a sirventes ("soldier's song") written after either the Battle of Benevento (1266) or the Battle of Tagliacozzo (1268). He favoured the Angevin cause in Italy.

Peire wrote that Raymond Berengar IV of Provence had kept the troubadour Sordello close to him.