XII (1st Royal Saxon) Corps

XII (1st Royal Saxon) Army Corps XII. (I. Königlich Sächsisches) Armee-Korps
Flag of the Staff of a Generalkommando (1871–1918)
Active	1 April 1867 (1867-04-01)–1919 (1919)
Country	Kingdom of Saxony  German Empire
Type	Corps
Size	Approximately 44,000 (on mobilisation in 1914)
Garrison/HQ	Dresden/Große Klostergasse 4
Patron	King of Saxony
Shoulder strap piping	White
Engagements	Franco-Prussian War Battle of Gravelotte Battle of Sedan Siege of Paris World War I Battle of the Frontiers

The XII (1st Royal Saxon) Army Corps / XII AK (German: XII. (I. Königlich Sächsisches) Armee-Korps) was a Saxon corps level command of the Saxon and German Armies before and during World War I.

The Corps was formed as the Royal Saxon Corps on 1 April 1867 and headquartered in Dresden. Initially, it commanded the 1st Royal Saxon Infantry Division in Dresden and the 2nd Royal Saxon Infantry Division in Leipzig. After the XIX (2nd Royal Saxon) Corps was set up on 1 April 1899 as the headquarters for the western part of the Kingdom of Saxony, XII Corps was made responsible for the eastern part of the Kingdom.

The Corps was disbanded with the demobilisation of the German Army after World War I.