Buczynów [buˈt͡ʂɨnuf] is a village in the administrative district of Gmina Góra Kalwaria, within Piaseczno County, Masovian Voivodeship, in east-central Poland. It lies approximately 4 kilometres (2 mi) south-west of Góra Kalwaria, 17 km (11 mi) south-east of Piaseczno, and 33 km (21 mi) south of Warsaw.