Waćmierek [vat͡ɕˈmjɛrɛk] is a village in the administrative district of Gmina Tczew, within Tczew County, Pomeranian Voivodeship, in northern Poland. It lies approximately 7 kilometres (4 mi) south of Tczew and 37 km (23 mi) south of the regional capital Gdańsk.

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