| Hassel | |
| Subdivision Type1: | Country |
| Subdivision Name1: | Germany |
| Subdivision Type2: | State |
| Subdivision Name2: | Saxony-Anhalt |
| Source1 Location: | south of Stiege |
| Mouth Location: | in the Rappbode Reservoir into the Rappbode |
| Custom Label: | References |
The Hassel is a river of Saxony-Anhalt, in the East Harz Mountains in Germany. It flows through several municipalities including Stiege and the town of Hasselfelde. Its source is located not far from Stiege. After about 10km (10miles) it flows into the Hassel Auxiliary Dam and later into the Rappbode Reservoir.