Piastów [ˈpjastuf] is a village in the administrative district of Gmina Jedlińsk, within Radom County, Masovian Voivodeship, in east-central Poland. It lies approximately 6 kilometres (4 mi) south-west of Jedlińsk, 13 km (8 mi) north-west of Radom, and 82 km (51 mi) south of Warsaw.