Brzeźniki [bʐɛʑˈniki] (German: Birken) is a settlement in the administrative district of Gmina Świeszyno, within Koszalin County, West Pomeranian Voivodeship, in north-western Poland.

It lies approximately 2 kilometres (1 mi) south-east of Świeszyno, 9 km (6 mi) south of Koszalin, and 131 km (81 mi) north-east of the regional capital Szczecin. It has a population of 12.