Rudnik (Polish pronunciation: [ˈrudɲik]) is a village in Krasnystaw County, Lublin Voivodeship, in eastern Poland. It is the seat of the gmina (administrative district) called Gmina Rudnik. It lies approximately 20 kilometres (12 mi) south-west of Krasnystaw and 50 km (31 mi) south-east of the regional capital Lublin.