Dębniak [ˈdɛmbɲak] is a village in the administrative district of Gmina Kazanów, within Zwoleń County, Masovian Voivodeship, in east-central Poland. It lies approximately 7 kilometres (4 mi) west of Kazanów, 19 km (12 mi) south-west of Zwoleń, and 109 km (68 mi) south of Warsaw.