| Tornau | |
| Type: | Ortsteil |
| Town: | Gräfenhainichen |
| Coordinates: | 51.6333°N 48°W |
| State: | Sachsen-Anhalt |
| District: | Wittenberg |
| Elevation: | 118 |
| Area: | 25.81 |
| Population: | 559 |
| Stand: | 2009-12-31 |
| Postal Code: | 06774 |
| Area Code: | 034243 |
| Licence: | WB |
| Website: | www.tornau-heidedorf.de |
Tornau is a village and a former municipality in Wittenberg district in Saxony-Anhalt, Germany. Since 1 January 2011, it is part of the town Gräfenhainichen. It was part of the administrative community (Verwaltungsgemeinschaft) of Tor zur Dübener Heide.
Tornau lies about 5 km north of Bad Düben in the Düben Heath Nature Park.
Federal Highway (Bundesstraße) B 2 between Leipzig and Wittenberg runs straight through the municipality, while State Highway (Landesstraße) 130, which connects to the B 2 and the B 183/107, crosses the municipal area.