| Erbach | |
| Subdivision Type1: | Country |
| Subdivision Name1: | Germany |
| Subdivision Type2: | State |
| Subdivision Name2: | Saarland |
| Subdivision Type3: | City |
| Subdivision Name3: | Homburg |
| Mouth Location: | Blies |
| Mouth Coordinates: | 49.2882°N 7.3119°W |
| Length: | 16.12km (10.02miles) |
| Tributaries Left: | Ebersbach, Reichersbach, Eisenkautbach |
| Tributaries Right: | Felsbach, Taubentalbach, Schmalaugraben, Erbacher Schmalaubach |
| Waterbodies: | Schloßweiher, Brückweiher, Möhlwoog |
Erbach (pronounced as /de/) is a river of Saarland, Germany. It flows into the Blies near Homburg.