Błotnik [ˈbwɔtnik] is a village in the administrative district of Gmina Cedry Wielkie, within Gdańsk County, Pomeranian Voivodeship, in northern Poland. It lies approximately 5 kilometres (3 mi) north-east of Cedry Wielkie, 16 km (10 mi) east of Pruszcz Gdański, and 19 km (12 mi) south-east of the regional capital Gdańsk.
For details of the history of the region, see History of Pomerania.
The village has a population of 344.
Coordinates: 54°16′33″N 18°52′30″E / 54.27583°N 18.87500°E