Stara Błotnica [ˈstara bwɔtˈnit͡sa] is a village in Białobrzegi County, Masovian Voivodeship, in east-central Poland. It is the seat of the gmina (administrative district) called Stara Błotnica. It lies approximately 12 kilometres (7 mi) south of Białobrzegi and 74 km (46 mi) south of Warsaw.