Hamer-Młyn ([ˈxamɛr ˈmwɨn]) is a village in the administrative district of Gmina Lipnica, within Bytów County, Pomeranian Voivodeship, in northern Poland. It lies approximately 8 kilometres (5 mi) north-east of Lipnica, 11 km (7 mi) south of Bytów, and 83 km (52 mi) south-west of the regional capital Gdańsk.