Piaseczno [pjaˈsɛt͡ʂnɔ] is a village in the administrative district of Gmina Warka, within Grójec County, Masovian Voivodeship, in east-central Poland. It lies approximately 4 kilometres (2 mi) north of Warka, 24 km (15 mi) east of Grójec, and 47 km (29 mi) south of Warsaw.