| Black Elster Schwarze Elster | |
|---|---|
 The Black Elster in Schweinitz | |
| Location | |
| Country | Germany |
| Physical characteristics | |
| Source | |
| - location | Upper Lusatia |
| Mouth | Elbe |
| - coordinates | 51°48′59″N 12°49′57″E / 51.81639°N 12.83250°E |
The Black Elster (German: Schwarze Elster) is a river in eastern Germany. It is about 179 km (111 mi) long and is a right tributary of the Elbe.
The river flows through the federal states of Saxony, Brandenburg and Saxony-Anhalt. Its source is in Upper Lusatia, near the town of Elstra. The Black Elster flows into the Elbe near Elster (Elbe).