Mostno [ˈmɔstnɔ] (formerly German Kerstenbrügge) is a village in the administrative district of Gmina Dębno, within Myślibórz County, West Pomeranian Voivodeship, in north-western Poland. It lies approximately 5 kilometres (3 mi) east of Dębno, 22 km (14 mi) south of Myślibórz, and 76 km (47 mi) south of the regional capital Szczecin.

For the history of the region, see History of Pomerania.

The village has a population of 206.