Unieście [uˈɲeɕt͡ɕe] (German: Nest) is a coastal village in the administrative district of Gmina Mielno, within Koszalin County, West Pomeranian Voivodeship, in north-western Poland. It lies approximately 12 kilometres (7 mi) north-west of Koszalin and 137 km (85 mi) north-east of the regional capital Szczecin.
Before 1945 the area was part of Germany. After World War II the region was placed under Polish administration and ethnically cleansed according to the post-war Potsdam Agreement. The native German populace was expelled and replaced with Poles. For the history of the region, see History of Pomerania.
Unieście has a population of 1,000. Together with Mielno, which it adjoins to the west, it serves as a popular seaside resort. The two villages lie on a spit between the Baltic Sea and Jamno lake.
Coordinates: 54°16′4″N 16°5′12″E / 54.26778°N 16.08667°E