| Klosterbach | |
| Subdivision Type1: | Country |
| Subdivision Name1: | Germany |
| Subdivision Type2: | State |
| Subdivision Name2: | North Rhine-Westphalia |
| Length: | 1.6km (01miles) |
| Source1 Location: | In Bieren |
| Source1 Elevation: | [1] |
| Mouth Location: | near Schwenningdorf-Neue Mühle into the Große Aue |
| Mouth Elevation: | |
| Basin Population: | 250 |
| Basin Landmarks: | Villages: Rödinghausen |
| Basin Size: | <10 km² |
| Custom Label: | References |
The Klosterbach is a right-hand tributary of the Große Aue, which is known as the Neuer Mühlenbach at the point where they join, in north Germany. The Klosterbach lies entirely within the parish of Rödinghausen in the district of Herford, North Rhine-Westphalia.
The Klosterbach emerges north of Bieren near the Donoer Berg on the southern edge of the Wiehen Hills at a height of . The stream discharges into the Große Aue after 1.6 kilometres at a height of at river kilometre 82.9 on the Aue. The Klosterbach descends a height of 58 metres.