Gąsiory [ɡɔ̃ˈɕɔrɨ] is a village in the administrative district of Gmina Żelechów, within Garwolin County, Masovian Voivodeship, in east-central Poland. It lies approximately 9 kilometres (6 mi) west of Żelechów, 14 km (9 mi) south-east of Garwolin, and 70 km (43 mi) south-east of Warsaw.