Iwin [ˈivin] (formerly German Elfenbusch) is a village in the administrative district of Gmina Grzmiąca, within Szczecinek County, West Pomeranian Voivodeship, in north-western Poland. It lies approximately 19 kilometres (12 mi) north-west of Szczecinek and 135 km (84 mi) east of the regional capital Szczecin.

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

The village has a population of 265.