Kwaśniów Dolny [ˈkfaɕɲuf ˈdɔlnɨ] is a village in the administrative district of Gmina Klucze, within Olkusz County, Lesser Poland Voivodeship, in southern Poland. It lies approximately 5 kilometres (3 mi) north of Klucze, 12 km (7 mi) north of Olkusz, and 44 km (27 mi) north-west of the regional capital Kraków.