Smardzew [ˈsmard͡zɛf] is a village in the administrative district of Gmina Radzanów, within Białobrzegi County, Masovian Voivodeship, in east-central Poland. It lies approximately 7 kilometres (4 mi) north-east of Radzanów, 7 km (4 mi) south-west of Białobrzegi, and 69 km (43 mi) south of Warsaw.