Mrozy [ˈmrɔzɨ] is a village in the administrative district of Gmina Puszcza Mariańska, within Żyrardów County, Masovian Voivodeship, in east-central Poland. It lies approximately 4 kilometres (2 mi) north of Puszcza Mariańska, 6 km (4 mi) south-west of Żyrardów, and 49 km (30 mi) south-west of Warsaw.