Zaskoczyn [zasˈkɔt͡ʂɨn] is a village in the administrative district of Gmina Trąbki Wielkie, within Gdańsk County, Pomeranian Voivodeship, in northern Poland. It lies approximately 6 kilometres (4 mi) north-west of Trąbki Wielkie, 14 km (9 mi) south-west of Pruszcz Gdański, and 22 km (14 mi) south-west of the regional capital Gdańsk.

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