| Image Coa: | DEU Rehhorst COA.svg |
| Coordinates: | 53.8761°N 10.4703°W |
| Image Plan: | Rehhorst in OD.svg |
| State: | Schleswig-Holstein |
| District: | Stormarn |
| Amt: | Nordstormarn |
| Elevation: | 62 |
| Area: | 16.19 |
| Postal Code: | 23619 |
| Area Code: | 04533 |
| Licence: | OD |
| Gemeindeschlüssel: | 01 0 62 059 |
| Website: | www.amt- nordstormarn.de |
| Mayor: | Friedrich-Wilhelm Löwe |
Rehhorst is a municipality in the district of Stormarn, in Schleswig-Holstein, Germany.