| Image Coa: | DEU Hartenholm COA.svg |
| Coordinates: | 53.9011°N 10.0606°W |
| Image Plan: | Hartenholm in SE.svg |
| State: | Schleswig-Holstein |
| District: | Segeberg |
| Amt: | Auenland Südholstein |
| Elevation: | 33 |
| Area: | 15.37 |
| Postal Code: | 24628 |
| Area Code: | 04195 |
| Licence: | SE |
| Gemeindeschlüssel: | 01 0 60 034 |
| Website: | www.hartenholm.de |
| Mayor: | Karl-Heinz Panten |
| Party: | SPD |
Hartenholm is a municipality in the district of Segeberg, in Schleswig-Holstein, Germany.