Kozietuły [kɔʑɛˈtuwɨ] is a village in the administrative district of Gmina Mogielnica, within Grójec County, Masovian Voivodeship, in east-central Poland. It lies approximately 8 kilometres (5 mi) north-east of Mogielnica, 15 km (9 mi) south-west of Grójec, and 55 km (34 mi) south of Warsaw.