Mieleszyn [mjɛˈlɛʂɨn] is a village in the administrative district of Gmina Bolesławiec, within Wieruszów County, Łódź Voivodeship, in central Poland. It lies approximately 5 kilometres (3 mi) north of Bolesławiec, 8 km (5 mi) south-east of Wieruszów, and 107 km (66 mi) south-west of the regional capital Łódź.