Irrbach
| Irrbach | |
|---|---|
| Location | |
| Country | Germany | 
| States | Hesse | 
| Physical characteristics | |
| Mouth | |
 • location  | Osterbach | 
 • coordinates  | 49°41′39″N 8°51′35″E / 49.6941°N 8.8598°E | 
| Basin features | |
| Progression | Osterbach→ Gersprenz→ Main→ Rhine→ North Sea | 
| Tributaries | |
| • right | Lauchbach | 
The Irrbach is a small river of Hesse, Germany. It is a two-kilometer-long left tributary of the Osterbach, flowing into it in Unter-Ostern.