Postomino (Polish pronunciation: [pɔstɔˈminɔ]; German:Pustamin) is a village in Sławno County, West Pomeranian Voivodeship, in north-western Poland. It is the seat of the gmina (administrative district) called Gmina Postomino. It lies approximately 15km (9mi) north of Sławno and 184km (114mi) north-east of the regional capital Szczecin.

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

The village has a population of 625.