| Krullsbach | |
| Source1 Coordinates: | 51.9619°N 8.4256°W |
| Mouth Location: | Lutter |
| Mouth Coordinates: | 51.9433°N 8.328°W |
| Subdivision Type1: | Country |
| Subdivision Type2: | States |
Krullsbach is a river of North Rhine-Westphalia, Germany. It flows into the Lutter northwest of Gütersloh.