Dolnik Greater Poland Voivodeship
 Dolnik [ˈdɔlnik] (German: Wittenburg; before 1926: Dollnik) is a village in the administrative district of Gmina Krajenka within Złotów County Greater Poland Voivodeship in west-central Poland. It lies approximately 7 kilometres (4 mi) south-west of Krajenka 14 km (9 mi) south-west of Złotów and 97 km (60 mi) north of the regional capital Poznań.Before 1772 the area was part of Kingdom of Poland 1772-1945 Prussia and Germany.