| Type: | Stadtteil |
| Town: | Halberstadt |
| Langenstein | |
| Image Coa: | Wappen Langenstein.png |
| Coordinates: | 51.8531°N 10.9883°W |
| State: | Sachsen-Anhalt |
| District: | Harz |
| Elevation: | 192 |
| Area: | 21.28 |
| Population: | 1929 |
| Stand: | 2006-12-31 |
| Postal Code: | 38895 |
| Area Code: | 03941 |
| Licence: | HZ |
| Website: | www.gemeinde-langenstein-vorharz.de |
Langenstein is a village and a former municipality in the district of Harz, in Saxony-Anhalt, Germany. Since 1 January 2010, it is part of the town Halberstadt. The World War II concentration camp Langenstein-Zwieberge was located here.