Białobrzegi is a town located in the Masovian Voivodeship of eastern Poland. It serves as the capital of both Białobrzegi County and Gmina Białobrzegi. Situated approximately 65 kilometres south of Warsaw, the town lies near the boundary between the historic regions of Mazovia and Lesser Poland.
Geographically, the town is positioned on the border of the Radom Plain and the Białobrzegi Valley, roughly 30 kilometres northwest of Radom. The Pilica River flows through the town. As of December 2021, Białobrzegi had a population of 6,749 residents.