The Plietnitz (Polish: Plitnica) is an approx. 60 km long wild tributary of the Küddow in the northern Poland in the voivodeship Greater Poland.
Run
The Plietnitz rises at Szczecinek on the Dramburger Lake District and ends at Złotów in the Küddow. The river flows through numerous lakes. The Plietnitz is very popular with canoeists. Through the Bydgoszcz Canal is she also with the Brda and the Vistula connected. The river network can be navigated with a houseboat.