Osiek [ˈɔɕɛk] is a village in the administrative district of Gmina Linia, within Wejherowo County, Pomeranian Voivodeship, in northern Poland. It lies approximately 5 kilometres (3 mi) north-east of Linia, 23 km (14 mi) south-west of Wejherowo, and 45 km (28 mi) west of the regional capital Gdańsk.

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