| Karthane | |
| Mouth Location: | Stepenitz |
| Mouth Coordinates: | 52.9876°N 11.7639°W |
| Subdivision Type1: | Country |
| Subdivision Name1: | Germany |
| Subdivision Type2: | States |
| Subdivision Name2: | Brandenburg |
Karthane is a river of Brandenburg, Germany. It flows into the Stepenitz in Wittenberge.