| Teufelsgrundbach | |
| Subdivision Type1: | Country |
| Subdivision Name1: | Germany |
| Subdivision Type2: | State |
| Subdivision Name2: | Saxony-Anhalt |
| Subdivision Type3: | Region |
| Subdivision Name3: | Lower Harz |
| Mouth Location: | near Silberhütte into the Selke |
| Basin Landmarks: | Large towns: Harzgerode |
| Waterbodies: | Reservoirs: Teufelsteich, Fürstenteich, Silberhütter Pochwerksteich |
| Custom Label: | References |
The Teufelsgrundbach, also Teufelsbach, is a tributary of the Selke in the Lower Harz in Saxony-Anhalt in Germany. The stream flows through the valley of the Teufelsgrund.