| Mouth | Heve |
|---|---|
| Mouth coordinates | 51.4281°N 8.2665°E |
| Country | Germany |
| State | North Rhine-Westphalia |
| Length | 4.5 km (2.8 mi) |
| Tributaries left | Hormecke |
The Wacker is a small river of North Rhine-Westphalia, Germany. It is a left tributary of the Bache (the upper course of the Heve). The Heve is a tributary of the Möhne.