Łączyno [wɔnˈt͡ʂɨnɔ] is a village in the administrative district of Gmina Stężyca, within Kartuzy County, Pomeranian Voivodeship, in northern Poland. It lies approximately 8 kilometres (5 mi) north-east of Stężyca, 15 km (9 mi) south-west of Kartuzy, and 43 km (27 mi) west of the regional capital Gdańsk.

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