Gmina Bielsk is a rural gmina (administrative district) in Płock County, Masovian Voivodeship, in east-central Poland. Its seat is the village of Bielsk, which lies approximately 16 km north-east of Płock and 96 km north-west of Warsaw. The gmina covers an area of 125.53 km2, and as of 2006 its total population is 8,936.

Villages

Gmina Bielsk contains the villages and settlements of Bielsk, Bolechowice, Cekanowo, Ciachcin, Ciachcin Nowy, Dębsk, Drwały, Dziedzice, Gilino, Giżyno, Goślice, Jączewo, Jaroszewo Biskupie, Jaroszewo-Wieś, Józinek, Kędzierzyn, Kleniewo, Kłobie, Konary, Kuchary-Jeżewo, Leszczyn Księży, Leszczyn Szlachecki, Lubiejewo, Machcinko, Machcino, Niszczyce, Niszczyce-Pieńki, Pęszyno, Rudowo, Sękowo, Śmiłowo, Smolino, Strusino, Szewce, Tchórz, Tłubice, Ułtowo, Umienino, Zągoty, Zagroba, Zakrzewo and Żukowo.

Neighbouring gminas

Gmina Bielsk is bordered by the gminas of Drobin, Gozdowo, Radzanowo, Stara Biała, Staroźreby and Zawidz.