Duingen is a former Samtgemeinde ("collective municipality") in the district of Hildesheim, in Lower Saxony, Germany. Its seat was in the village Duingen. On 1 November 2016 it was merged into the new Samtgemeinde Leinebergland.
The Samtgemeinde Duingen consisted of the following municipalities:
Coordinates: 52°00′00″N 9°42′00″E / 52.000°N 9.700°E