| Image Coa: | DEU Dassendorf COA.svg |
| Coordinates: | 53.4925°N 10.3758°W |
| Image Plan: | Dassendorf in RZ.svg |
| State: | Schleswig-Holstein |
| District: | Herzogtum Lauenburg |
| Amt: | Hohe Elbgeest |
| Elevation: | 55 |
| Area: | 7.95 |
| Postal Code: | 21521 |
| Area Code: | 04104 |
| Licence: | RZ |
| Gemeindeschlüssel: | 01 0 53 023 |
| Website: | www.amt-hohe- elbgeest.de |
| Mayor: | Helmut Rüberg |
Dassendorf (pronounced as /de/) is a municipality in the district of Lauenburg, in Schleswig-Holstein, Germany.