Brzóstowa [bʐusˈtɔva] is a village in the administrative district of Gmina Ćmielów, within Ostrowiec County, Świętokrzyskie Voivodeship, in south-central Poland. It lies approximately 3 kilometres (2 mi) west of Ćmielów, 8 km (5 mi) south-east of Ostrowiec Świętokrzyski, and 62 km (39 mi) east of the regional capital Kielce.