| Kleiner Bullensee | |
| Pushpin Map: | Lower Saxony |
| Location: | Rotenburg (Wümme), Lower Saxony |
| Coords: | 53.0629°N 9.4096°W |
| Basin Countries: | Germany |
| Length: | 0.25km (00.16miles) |
| Width: | 0.15km (00.09miles) |
Kleiner Bullensee is a lake in Rotenburg (Wümme), Lower Saxony, Germany. It lies within the Großes und Weißes Moor Naturschutzgebiet (nature reserve). A nearby lake is called Großer Bullensee.