Karstnitz
Karstnitz is the German name of a place and a river in the Polish Pomeranian Voivodeship:
- Karżniczka ( Karstnitz , until 1938 German Karstnitz, district of Stolp / Pomerania )
- Karznica (until 1938 Wendisch Karstnitz , 1938–45 Ramnitz )
- Charstnica ( Karstnitz-Bach) , left tributary of the Łupawa ( Lupow )