Koplin [ˈkɔplin] (German: Kopplinsthal) is a village in the administrative district of Gmina Choszczno, within Choszczno County, West Pomeranian Voivodeship, in north-western Poland. It lies approximately 3 km (2 mi) south-west of Choszczno (Arnswalde) and 61 km (38 mi) south-east of the regional capital Szczecin (Stettin).

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