| Weißach | |
| Mouth Coordinates: | 48.9483°N 9.4461°W |
| Subdivision Type1: | Country |
| Subdivision Name1: | Germany |
| Subdivision Type2: | State |
| Subdivision Name2: | Baden-Württemberg |
| Length: | 12.3km (07.6miles) |
Weißach is a river of Baden-Württemberg, Germany. It passes through Weissach im Tal and flows into the Murr near Backnang.