Nickelshorst
Nickelshorst is a German place name:
- Nickelshorst , until 1938 Galkowen-Nikolaihorst , village in the Sensburg district, East Prussia, since 1945: Gałkowo , village in the urban and rural municipality of Ruciane-Nida in the Piski powiat, Warmian-Masurian Voivodeship, Poland
- Nickelshorst , until 1938 Nikolaihorst , forestry in the Sensburg district, East Prussia, since 1945: Mościska (Piecki) , forest settlement in the Piecki municipality in the Mrągowski powiat, Warmian-Masurian Voivodeship, Poland