| Lottenbach | |
| Mouth Location: | Oelbach |
| Mouth Coordinates: | 51.4379°N 7.2814°W |
| Progression: | Oelbach→ |
| Subdivision Type1: | Country |
| Subdivision Type2: | States |
Lottenbach is a small river of North Rhine-Westphalia, Germany. It flows into the Oelbach near Bochum.