Mościska [mɔɕˈt͡ɕiska] is a village in the administrative district of Gmina Grodzisk Mazowiecki, within Grodzisk Mazowiecki County, Masovian Voivodeship, in east-central Poland. It lies approximately 5 kilometres (3 mi) south of Grodzisk Mazowiecki and 32 km (20 mi) south-west of Warsaw.