| Sperrlutter | |
| Subdivision Type1: | Country |
| Subdivision Name1: | Germany |
| Subdivision Type2: | State |
| Subdivision Name2: | Lower Saxony |
| Subdivision Type3: | Location |
| Subdivision Name3: | Harz |
| Length: | 11.8km (07.3miles) |
| Source1 Elevation: | over |
| Mouth Location: | Oder |
| Tributaries Right: | Wäschegrund, Warmeloch and Breitenbeek |
| Custom Label: | References |
The Sperrlutter is a river in Lower Saxony, Germany, a roughly 12km (07miles)-long tributary of the Oder between Sankt Andreasberg and Bad Lauterberg in the Harz Mountains.
The Sperrlutter rises at about in the vicinity of the Glückaufklippen. It flows initially south through the village of Silberhütte, where it is joined by the Wäschegrund. Then, it is joined by the Breitenbeek, the largest tributary of the Sperrlutter. Finally, the Sperrlutter reaches Bad Lauterberg and enters the Oder at a height of .