Otomin [ɔˈtɔmin] is a village in the administrative district of Gmina Kolbudy, within Gdańsk County, Pomeranian Voivodeship, in northern Poland. It lies approximately 7 kilometres (4 mi) north-east of Kolbudy, 11 km (7 mi) north-west of Pruszcz Gdański, and 10 km (6 mi) south-west of the regional capital Gdańsk.

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