Nörten-Hardenberg is a municipality in the district of Northeim, in Lower Saxony, Germany.
It is situated on the river Leine, approx. 10 km southwest of Northeim, and 10 km north of Göttingen. The main town is located on the foothills of the Nörtener Wald but great parts of the municipality are in the Leinegraben, a lowland between the Solling and the Harz.
Neighbor communities are Bovenden (south), Hardegsen (west), Moringen (northwest), Katlenburg-Lindau (east) and Northeim (north)
Besides the main town himself, the following villages are component localities of Nörten-Hardenberg: