Brzeziny [bʐɛˈʑinɨ] is a village in the administrative district of Gmina Pionki, within Radom County, Masovian Voivodeship, in east-central Poland. It lies approximately 5 kilometres (3 mi) west of Pionki, 18 km (11 mi) north-east of Radom, and 86 km (53 mi) south of Warsaw.