| Gauchach | |
| Mouth Coordinates: | 47.854°N 8.4392°W |
| Subdivision Type1: | Country |
| Subdivision Name1: | Germany |
| Subdivision Type2: | State |
| Subdivision Name2: | Baden-Württemberg |
| Length Km: | 20.8 |
The Gauchach is a stream and tributary of the river Wutach in Baden-Württemberg, Germany. It runs through the spectacular Gauchach Gorge.