| Deesbach Forebay | |
| Coordinates: | 50.5753°N 11.1697°W |
| Country: | Germany, Thuringia |
| Location: | Distr. Saalfeld-Rudolstadt, Municip. Unterweissbach, Lichte Valley |
| Construction Began: | 1981 |
| Opening: | 1991 |
| Dam Length: | 178 m |
| Dam Height: | 42.5 m |
| Dam Width Crest: | 6 m |
| Dam Width Base: | 180.6 m |
| Dam Volume: | 13,500 m³ |
| Res Capacity Total: | 3.2 million m³ |
| Res Catchment: | 49.5 km² |
| Res Surface: | 122 ha |
| Res Max Depth: | 22 m |
The Deesbach Forebay (German: Vorsperre Deesbach) is a dam in the German state of Thuringia in the Thuringian Highland. It impounds the river Lichte and lies between the municipalities Lichte (Geiersthal) and Unterweissbach. That particular forebay belongs to the Leibis-Lichte Dam (de: Talsperre Leibis-Lichte).
The name, Deesbach Forebay, was derived d from the close proximity to the municipality Deesbach.