Jastrzębnik [jasˈtʂɛmbnik] is a village in the administrative district of Gmina Żabia Wola, within Grodzisk Mazowiecki County, Masovian Voivodeship, in east-central Poland. It lies approximately 3 kilometres (2 mi) east of Żabia Wola, 12 km (7 mi) south-east of Grodzisk Mazowiecki, and 28 km (17 mi) south-west of Warsaw.