Sławno [ˈswavnɔ] is a village in Opoczno County, Łódź Voivodeship, in central Poland. It is the seat of the gmina (administrative district) called Gmina Sławno. It lies approximately 11 kilometres (7 mi) west of Opoczno and 64 km (40 mi) south-east of the regional capital Łódź.