Northeim
| Northeim   | |
|---|---|
| Castle of Imbshausen | |
| Location of Northeim   within Northeim   district | |
| Coordinates: 51°42′24″N 10°00′04″E / 51.70667°N 10.00111°E | |
| Country | Germany | 
| State | Lower Saxony | 
| District | Northeim | 
| Subdivisions | 16 Ortsteile | 
| Government | |
| • Mayor (2018–23) | Simon Hartmann (SPD) | 
| Area | |
|  • Total | 145.67 km2 (56.24 sq mi) | 
| Elevation | 120 m (390 ft) | 
| Population  (2023-12-31) | |
|  • Total | 27,522 | 
| • Density | 190/km2 (490/sq mi) | 
| Time zone | UTC+01:00 (CET) | 
| • Summer (DST) | UTC+02:00 (CEST) | 
| Postal codes | 37154 | 
| Dialling codes | 05551 | 
| Vehicle registration | NOM, EIN, GAN | 
| Website | www.northeim.de | 
Northeim (German pronunciation: [ˈnɔʁtˌhaɪ̯m] ⓘ; Low German: Nuurten) is a town in Lower Saxony, Germany, seat of the district of Northeim, with a population of 30,118 as of 31 December 2023. It lies on the German Half-Timbered House Road.