Kuźnica Masłońska (Polish pronunciation: [kuʑˈɲit͡sa maˈswɔj̃ska]) is a village in the administrative district of Gmina Łazy, within Zawiercie County, Silesian Voivodeship, in southern Poland. It lies approximately 3 kilometres (2 mi) north of Łazy, 5 km (3 mi) south of Zawiercie, and 37 km (23 mi) north-east of the regional capital Katowice.