| Breitenbeek | |
| Subdivision Type1: | Country |
| Subdivision Name1: | Germany |
| Subdivision Type2: | State |
| Subdivision Name2: | Lower Saxony |
| Subdivision Type3: | Location |
| Subdivision Name3: | between Sankt Andreasberg and Bad Lauterberg in the Harz Mountains |
| Length: | over |
| Source1 Elevation: | over 620 m |
| Mouth Location: | Sperrlutter |
| Mouth Elevation: | 360 m |
| River System: | Sperrlutter→ |
| Waterbodies: | Reservoirs: Engelsburger Teiche |
| Custom Label: | References |
The Breitenbeek is a roughly 6.3km (03.9miles) river of Lower Saxony, in the Harz Mountains of central Germany. It is a tributary of the Sperrlutter.[1] It rises at over 620 m in the vicinity of the Rehbergklinik in (a part of Sankt Andreasberg). It then flows initially southwards through the Engelsburger Teiche, before it joins the Sperrlutter at 360 m. The Breitenbeek is the largest tributary of the Sperrlutter.