| Großbach | |
| Source1 Coordinates: | 49.7092°N 7.511°W |
| Mouth Coordinates: | 49.7737°N 7.4516°W |
| Subdivision Type1: | Country |
Großbach is a river of Rhineland-Palatinate, Germany.
The Großbach is built by the confluence of the Leizenbach and Siener Bach at Otzweiler. It is a right tributary of the Nahe at Kirn.