| Image Coa: | Wappen Duingen.png |
| Coordinates: | 52°N 51°W |
| Image Plan: | Duingen in HI.svg |
| State: | Niedersachsen |
| District: | Hildesheim |
| Samtgemeinde: | Leinebergland |
| Elevation: | 193 |
| Area: | 59.62 |
| Gemeindeschlüssel: | 03254041 |
| Postal Code: | 31089 |
| Area Code: | 05185 |
| Licence: | HI |
| Website: | www.Duingen.de |
Duingen is a village and a municipality in the district of Hildesheim, in Lower Saxony, Germany. It is situated approximately 25 km southwest of Hildesheim, and 40 km south of Hanover. Since 1 November 2016, the former municipalities Coppengrave, Hoyershausen, Marienhagen and Weenzen are part of the municipality Duingen.
Duingen was the seat of the former Samtgemeinde ("collective municipality") Duingen.