Cetuń [ˈt͡sɛtuɲ] is a village in the administrative district of Gmina Polanów, within Koszalin County, West Pomeranian Voivodeship, in north-western Poland. It lies approximately 8 kilometres (5 mi) west of Polanów, 29 km (18 mi) south-east of Koszalin, and 152 km (94 mi) north-east of the regional capital Szczecin.

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

The village has a population of 230.