Krupka [ˈkrupka] is a settlement in the administrative district of Gmina Bolesławiec, within Wieruszów County, Łódź Voivodeship, in central Poland. It lies approximately 3 kilometres (2 mi) north of Bolesławiec, 10 km (6 mi) south of Wieruszów, and 109 km (68 mi) south-west of the regional capital Łódź.