Żeleźnica Greater Poland Voivodeship
 Żeleźnica [ʐɛlɛʑˈnit͡sa] (German: Hammer) is a village in the administrative district of Gmina Krajenka within Złotów County Greater Poland Voivodeship in west-central Poland. It lies approximately 6 kilometres (4 mi) south-west of Krajenka 13 km (8 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. For more on its history see Złotów County.The village has a population of 100.