Mirocin Górny is a village in the administrative district of Gmina Kożuchów, within Nowa Sól County, Lubusz Voivodeship, in western Poland. It was known by its former name Herzogswaldau while in the Kingdom of Prussia. It lies approximately 7 kilometres (4 mi) west of Kożuchów, 16 km (10 mi) west of Nowa Sól, and 22 km (14 mi) south of Zielona Góra.