Sierowo [ɕɛˈrɔvɔ] is a village in the administrative district of Gmina Kołczygłowy, within Bytów County, Pomeranian Voivodeship, in northern Poland. It lies approximately 6 kilometres (4 mi) east of Kołczygłowy, 17 km (11 mi) north-west of Bytów, and 87 km (54 mi) west of the regional capital Gdańsk.

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