| Image Coa: | DEU Buchhorst COA.svg |
| Coordinates: | 53.3833°N 44°W |
| Image Plan: | Buchhorst in RZ.svg |
| State: | Schleswig-Holstein |
| District: | Herzogtum Lauenburg |
| Amt: | Lütau |
| Elevation: | 8 |
| Area: | 5.19 |
| Postal Code: | 21481 |
| Area Code: | 04153 |
| Licence: | RZ |
| Gemeindeschlüssel: | 01 0 53 019 |
| Website: | www.lauenburg.de |
| Mayor: | Torsten Tarinowski |
Buchhorst is a municipality in the district of Lauenburg, in Schleswig-Holstein, Germany.