| Type: | Ortsteil |
| Town: | Gardelegen |
| Coordinates: | 52.4746°N 11.2619°W |
| State: | Sachsen-Anhalt |
| District: | Altmarkkreis Salzwedel |
| Elevation: | 57 |
| Area: | 8.63 |
| Population: | 144 |
| Stand: | 2009-12-31 |
| Postal Code: | 39649 |
| Area Code: | 039082 |
| Licence: | SAW |
Sachau is a village and a former municipality in the district Altmarkkreis Salzwedel, in Saxony-Anhalt, Germany.[1] Since 1 January 2011, it is part of the town Gardelegen.