| Kainach | |
| Mouth Coordinates: | 49.9356°N 11.2903°W |
| Subdivision Type1: | Country |
| Subdivision Name1: | Germany |
| Subdivision Type2: | State |
| Subdivision Name2: | Bavaria |
| Length: | 13km (08miles) |
Kainach (in its upper course: Schwalbach) is a river of Bavaria, Germany. It is a left tributary of the Wiesent in Hollfeld.