Dębniak [ˈdɛmbɲak] is a village in the administrative district of Gmina Józefów nad Wisłą, within Opole Lubelskie County, Lublin Voivodeship, in eastern Poland. It lies approximately 20 kilometres (12 mi) south of Opole Lubelskie and 57 km (35 mi) south-west of the regional capital Lublin.