| Type: | Ortschaft |
| Town: | Allstedt |
| Coordinates: | 51.4417°N 11.3972°W |
| State: | Sachsen-Anhalt |
| District: | Mansfeld-Südharz |
| Elevation: | 160 |
| Area: | 9.96 |
| Population: | 363 |
| Stand: | 2013 |
| Pop Ref: | [1] |
| Postal Code: | 06542 |
| Area Code: | 034652 |
Nienstedt is a village and a former municipality in the Mansfeld-Südharz district, Saxony-Anhalt, Germany. Since 1 January 2010, it has been a part of the town Allstedt.[2] Together with the village Einzingen, it forms an Ortschaft of the town Allstedt.[3]
The earliest known reference to the village is in a record from AD 899, where it is referred to as Ninstat.