| Coordinates: | 53.0833°N 12°W |
| Image Plan: | Karwitz in DAN.svg |
| State: | Niedersachsen |
| District: | Lüchow-Dannenberg |
| Samtgemeinde: | Elbtalaue |
| Elevation: | 32-110 |
| Area: | 31.65 |
| Postal Code: | 29481 |
| Area Code: | 05861 |
| Licence: | DAN |
| Gemeindeschlüssel: | 03 3 54 012 |
| Divisions: | 7 Ortsteile |
| Mayor: | Horst Harms |
| Party: | CDU |
Karwitz is a municipality in the district Lüchow-Dannenberg, in Lower Saxony, Germany.