Belsk Duży [ˈbɛlsk ˈduʐɨ] is a village in Grójec County, Masovian Voivodeship, in east-central Poland. It is the seat of the gmina (administrative district) called Gmina Belsk Duży. It lies approximately 5 kilometres (3 mi) south-west of Grójec and 45 km (28 mi) south of Warsaw.
The village has a population of 800.
- Jan Rządkowski, Polish general