| Gundbach | |
| Mouth Location: | Schwarzbach |
| Mouth Coordinates: | 49.9771°N 8.5062°W |
| Subdivision Type1: | Country |
| Subdivision Name1: | Germany |
| Subdivision Type2: | State |
| Subdivision Name2: | Hesse |
| Length Km: | 22.9 |
Gundbach is a river of Hesse, Germany. At its confluence with the Geräthsbach west of Mörfelden-Walldorf, the Schwarzbach is formed.