| Type: | Stadtteil |
| Town: | Arnstein |
| Image Coa: | Wappen Arnstedt.png |
| Coordinates: | 51.6833°N 41°W |
| State: | Sachsen-Anhalt |
| District: | Mansfeld-Südharz |
| Elevation: | 190 |
| Area: | 8.76 |
| Population: | 552 |
| Stand: | 2009-12-31 |
| Postal Code: | 06333 |
| Area Code: | 034785 |
| Licence: | MSH |
Arnstedt is a village and a former municipality in the Mansfeld-Südharz district, Saxony-Anhalt, Germany. Since 1 September 2010, it is part of the town Arnstein.