The Penske PC4 was a Formula One car used by Team Penske during the 1976 and was driven to victory in that year's Austrian Grand Prix by John Watson.
O Penske PC4 foi un coche de Fórmula 1 utilizado polo equipo Penske durante a tempada 1976 e logrou unha vitoria no Gran Premio de Austria de 1976 pilotado por John Watson.