| Dannewerk Dannevirke | |
| Image Coa: | DEU Dannewerk COA.svg |
| Coordinates: | 54.4667°N 39°W |
| Image Plan: | Dannewerk in SL.PNG |
| State: | Schleswig-Holstein |
| District: | Schleswig-Flensburg |
| Amt: | Haddeby |
| Elevation: | 20 |
| Area: | 16.65 |
| Postal Code: | 24867 |
| Area Code: | 04621 |
| Licence: | SL |
| Gemeindeschlüssel: | 01 0 59 019 |
| Website: | www.haddeby.de |
| Mayor: | Hermann Büll |
Dannewerk (Danish: Dannevirke) is a municipality in Amt Haddeby in Schleswig-Flensburg District, Germany. It is named after the historic Danish Danevirke fortification.