| Image Coa: | DEU Melsdorf COA.svg |
| Coordinates: | 54.3172°N 10.0311°W |
| Image Plan: | Melsdorf in RD.png |
| State: | Schleswig-Holstein |
| District: | Rendsburg-Eckernförde |
| Amt: | Achterwehr |
| Elevation: | 20 |
| Area: | 5.86 |
| Postal Code: | 24109 |
| Area Code: | 04340 |
| Licence: | RD |
| Gemeindeschlüssel: | 01 0 58 104 |
| Website: | www.amtachterwehr.de |
| Mayor: | Detlef Ufert |
Melsdorf is a municipality in the district of Rendsburg-Eckernförde, in Schleswig-Holstein, Germany.