The siege of Kraków was one of the military conflicts of the Swedish and Transylvanian invasion of Poland, which took place in the summer of 1657. The royal city of Kraków, had been occupied for two years by a Swedish-Transylvanian garrison led by Paul Wirtz and János Bethlen. It was besieged by Polish Army of Hetman Jerzy Lubomirski, supported by soldiers of the Holy Roman Empire under Austrian field marshal Melchior von Hatzfeldt.