| Horst | |
| Image Coa: | DEU Horst (Lauenburg) COA.svg |
| Coordinates: | 53.6333°N 56°W |
| Image Plan: | Horst in RZ.svg |
| State: | Schleswig-Holstein |
| District: | Herzogtum Lauenburg |
| Amt: | Lauenburgische Seen |
| Elevation: | 52 |
| Area: | 11.93 |
| Postal Code: | 23883 |
| Area Code: | 04542 |
| Licence: | RZ |
| Gemeindeschlüssel: | 01 0 53 057 |
| Website: | www.amt-lauenburgische-seen.de |
| Mayor: | Günther Neuber |
Horst is a municipality in the district of Lauenburg, in Schleswig-Holstein, Germany.
During excavations near Horst some Slavic relicts were found, dating back to the 7th Century.