| Holzen | |
| Coordinates: | 51.9333°N 49°W |
| Image Plan: | Holzen in HOL.svg |
| State: | Niedersachsen |
| District: | Holzminden |
| Samtgemeinde: | Eschershausen-Stadtoldendorf |
| Elevation: | 190 |
| Area: | 7 |
| Postal Code: | 37632 |
| Area Code: | 05534 |
| Licence: | HOL |
| Gemeindeschlüssel: | 03 2 55 022 |
| Website: | www.holzen.info |
| Mayor: | Helmut Alms |
| Party: | SPD |
Holzen is a municipality in the district of Holzminden, in Lower Saxony, Germany.