Osieki (; )Ortsnamenverzeichnis der Ortschaften jenseits von Oder und Neiße by M. Kaemmerer is a village in the administrative district of Gmina Sianów, within Koszalin County, West Pomeranian Voivodeship, in north-western Poland. It lies approximately northwest of Sianów, north of Koszalin, and northeast of the regional capital Szczecin.
The village has a population of 444.
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