| Sülz | |
| Mouth Location: | Agger |
| Mouth Coordinates: | 50.8519°N 7.2137°W |
| Subdivision Type1: | Country |
| Subdivision Type2: | State |
| Length: | 48.7km (30.3miles) |
| Basin Size: | 245km2 |
| Tributaries Right: | Kürtener Sülz |
Sülz is a river of North Rhine-Westphalia, Germany. It flows into the Agger near Lohmar. Its total length is 48.7 km, including its main source river Lindlarer Sülz.