Osmolin [ɔsˈmɔlin] is a village in the administrative district of Gmina Sanniki, within Gostynin County, Masovian Voivodeship, in central Poland.

[1] It lies approximately 5 kilometres (3 mi) south of Sanniki, 29 km (18 mi) south-east of Gostynin, and 80 km (50 mi) west of Warsaw.

The village is the site of the Osmolin Radio Tower.

[2] Osmolin was granted Chełmno town rights modeled after Gąbin in 1439.

This Gostynin County location article is a stub.