Brzumin [ˈbʐumin] is a village in the administrative district of Gmina Góra Kalwaria, within Piaseczno County, Masovian Voivodeship, in east-central Poland. It lies approximately 5 kilometres (3 mi) south-east of Góra Kalwaria, 22 km (14 mi) south-east of Piaseczno, and 36 km (22 mi) south-east of Warsaw.