Stary Młyn [ˈstarɨ ˈmwɨn] is a village in the administrative district of Gmina Gniew, within Tczew County, Pomeranian Voivodeship, in northern Poland. It lies approximately 13 kilometres (8 mi) south-west of Gniew, 41 km (25 mi) south of Tczew, and 71 km (44 mi) south of the regional capital Gdańsk.

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