Brzostek [ˈbʐɔstɛk] is a town in Dębica County, Subcarpathian Voivodeship, south-eastern Poland (historic province of Lesser Poland). It is the seat of the gmina (administrative district) called Gmina Brzostek. The town has a population of 2,597 (02.06.2009). It lies on the Wisłoka river, in the foothills of the Carpathians, approximately 19 kilometres (12 mi) south of Dębica and 46 km (29 mi) west of the regional capital Rzeszów.