| Schmittwasser | |
| Mouth Location: | Sauer |
| Mouth Coordinates: | 51.6578°N 8.8898°W |
| Progression: | Sauer→ |
| Subdivision Type1: | Country |
| Subdivision Type2: | States |
Schmittwasser is a river of North Rhine-Westphalia, Germany. It is 8.81NaN1 long and flows as a right tributary into the Sauer[1] in Iggenhausen.