Rossau

Rossau may refer to:


 * Rossau, Saxony, a municipality in the district of Mittweida, Saxony, Germany
 * Rossau, Saxony-Anhalt, part of the town Osterburg in the district of Stendal, Saxony-Anhalt, Germany
 * Roßau, a part of the 9th district of Vienna, Austria