Châtellerault (pronounced [ʃatɛlʁo] ; Poitevin-Saintongeais: Châteulrô/Chateleràud; Occitan: Chastelairaud) is a commune in the Vienne department in the Nouvelle-Aquitaine region in France. It is located in the northeast of the former province Poitou, and the residents are called Châtelleraudais.