Bielsk may refer to:
Bielsk, Kuyavian-Pomeranian Voivodeship (north-central Poland) Bielsk, Masovian Voivodeship (east-central Poland) Bielsk Podlaski in Podlaskie Voivodeship (north-east Poland) Bielsk, Pomeranian Voivodeship (north Poland) Bielsk County, an administrative district whose seat is Bielsk Podlaski Gmina Bielsk Podlaski, an administrative district within Bielsk County Gmina Bielsk, an administrative district whose seat is Bielsk, Masovian Voivodeship
See also Bielsko-Biała, a city in Silesian Voivodeship, southern Poland Bielsko (disambiguation)