Rastenberg
- The Polish town of Kętrzyn was formerly known as Rastenburg.
| Rastenberg   | |
|---|---|
| Location of Rastenberg   within Sömmerda   district | |
| Coordinates: 51°10′34″N 11°25′9″E / 51.17611°N 11.41917°E | |
| Country | Germany | 
| State | Thuringia | 
| District | Sömmerda | 
| Municipal assoc. | Kölleda | 
| Government | |
| • Mayor (2024–30) | Beatrix Winter | 
| Area | |
|  • Total | 35.42 km2 (13.68 sq mi) | 
| Elevation | 205 m (673 ft) | 
| Population  (2024-12-31) | |
|  • Total | 2,360 | 
| • Density | 67/km2 (170/sq mi) | 
| Time zone | UTC+01:00 (CET) | 
| • Summer (DST) | UTC+02:00 (CEST) | 
| Postal codes | 99636 | 
| Dialling codes | 036377 | 
| Vehicle registration | SÖM | 
| Website | www | 
Rastenberg is a town in the district of Sömmerda, in Thuringia, Germany. It is situated 22 km east of Sömmerda, and 23 km northeast of Weimar.