| Oberndorf | |
| Image Coa: | DEU Oberndorf (Oste) COA.svg |
| Coordinates: | 53.75°N 9.15°W |
| Image Plan: | Oberndorf in CUX.svg |
| State: | Niedersachsen |
| District: | Cuxhaven |
| Samtgemeinde: | Land Hadeln |
| Elevation: | 1 |
| Area: | 32.71 |
| Postal Code: | 21787 |
| Area Code: | 04771, 04772, 04778 |
| Licence: | CUX |
| Gemeindeschlüssel: | 03 3 52 042 |
| Website: | www.oberndorf-oste.de |
| Mayor: | Detlef Horeis |
| Party: | SPD |
Oberndorf (pronounced as /de/) is a municipality in the district of Cuxhaven, in Lower Saxony, Germany.
Oberndorf belonged to the Prince-Archbishopric of Bremen, established in 1180. In 1648 the Prince-Archbishopric was transformed into the Duchy of Bremen, which was first ruled in personal union by the Swedish Crown - interrupted by a Danish occupation (1712–1715) - and from 1715 on by the Hanoverian Crown. The Kingdom of Hanover incorporated the Duchy in a real union and the Ducal territory became part of the new Stade Region, established in 1823.