Radonie [raˈdɔɲɛ] is a village in the administrative district of Gmina Grodzisk Mazowiecki, within Grodzisk Mazowiecki County, Masovian Voivodeship, in east-central Poland. It lies approximately 6 kilometres (4 mi) south of Grodzisk Mazowiecki and 30 km (19 mi) south-west of Warsaw.