Kirschau (Sorbian Korzym) is a village and a former municipality in Upper Lusatia in the district of Bautzen in Saxony in Germany.

It is situated in a region called Lausitzer Bergland in the valley of the Spree and the Pilke, between the "Mönchswalderberg" (449 m) and the "Lärchenberg" (354 m) and belongs in respects of administration to the district of Bautzen.

The community is separated into four different parts called (with the sorbian name additional): Bederwitz (Bjedrusk), Kleinpostwitz (Bójswecy), Rodewitz (Rozwodecy) and Sonnenberg (Słónčna Hora).

After the second world-war in the time of the GDR most enterprises became VEB, meaning they now belonged to the newly born communist state of East Germany.

The most important monuments are the ruins of the castle "Körse", the church of St. John (built in 1924 in Jugendstil) and the houses of the inner city in the same style.