| Heller | |
| Mouth Coordinates: | 50.7894°N 7.8713°W |
| Subdivision Type1: | Country |
| Length: | 30.1km (18.7miles) |
| Basin Size: | 204km2 |
The Heller is a 30 km long river in western Germany. It is a left tributary of the Sieg. The source is located near Haiger in Hesse. It flows through Burbach and Neunkirchen in North Rhine-Westphalia. It flows into the river Sieg in Betzdorf, Rhineland-Palatinate. Its basin area is 204 km².