Heidenau is a town in the Sächsische Schweiz-Osterzgebirge district, in the Free State of Saxony, Germany. The town is situated on the left bank of the Elbe, 13 km southeast of Dresden (centre).

In 2015 it became known for riots by local far-right forces against the arrival of refugees. In August 2015, authorities were forced to impose a temporary ban on assemblies in Heidenau due to continuous harassment of asylum-seekers.