| Dorndorfer Bach | |
| Mouth Location: | Salzbach |
| Mouth Coordinates: | 50.4882°N 8.0126°W |
| Progression: | Salzbach→ |
| Subdivision Type1: | Country |
| Tributaries Left: | Watzenbach |
Dorndorfer Bach is a small river in Hesse, Germany. Upstream until its confluence with the Watzenbach, it is also known as Kieselbach. The Dorndorfer Bach eventually flows into the Salzbach in Thalheim.