Jezioro [jɛˈʑɔrɔ] is a village in the administrative district of Gmina Żelechów, within Garwolin County, Masovian Voivodeship, in east-central Poland. It lies approximately 5 kilometres (3 mi) south-west of Żelechów, 20 km (12 mi) south-east of Garwolin, and 76 km (47 mi) south-east of Warsaw.