Bielanka [bjɛˈlaŋka] (German: Lauterseiffen) is a village in the administrative district of Gmina Lwówek Śląski, within Lwówek Śląski County, Lower Silesian Voivodeship, in south-western Poland. Prior to 1945 it was in Germany. After World War II the region was placed under Polish administration and ethnically cleansed according to the post-war Potsdam Agreement.