Stefanowo [stɛfaˈnɔvɔ] is a village in the administrative district of Gmina Lesznowola, within Piaseczno County, Masovian Voivodeship, in east-central Poland. It lies approximately 6 kilometres (4 mi) south-west of Lesznowola, 10 km (6 mi) west of Piaseczno, and 21 km (13 mi) south-west of Warsaw.

In 1975–1998, the village belonged to the Warsaw province.