| Image Coa: | Wappen Hoyerhagen.png |
| Coordinates: | 52.8167°N 14°W |
| Image Plan: | Hoyerhagen in NI.svg |
| State: | Niedersachsen |
| District: | Nienburg/Weser |
| Samtgemeinde: | Grafschaft Hoya |
| Elevation: | 15 |
| Area: | 23 |
| Postal Code: | 27318 |
| Area Code: | 04251 |
| Licence: | NI |
| Gemeindeschlüssel: | 03 2 56 015 |
| Website: | www.hoya-weser.de |
| Mayor: | Karsten Borstelmann |
Hoyerhagen is a municipality in the district of Nienburg, in Lower Saxony, Germany.