| Pleisbach | |
| Mouth Location: | Sieg |
| Mouth Coordinates: | 50.7824°N 7.2132°W |
| Subdivision Type1: | Country |
| Subdivision Type2: | State |
| Length: | 24.3km (15.1miles) |
Pleisbach (in its upper course also: Logebach) is a river of North Rhine-Westphalia, Germany. It is a left tributary of river Sieg near Siegburg.