The Imperial and Royal Minister of War (German: K.u.k. Kriegsminister; Hungarian: Cs. es K. Hadügyminiszter), until 1911: Reich Minister of War (Reichskriegsminister; Birodalmi Hadügyminiszter), was the head of one of the three common ministries shared by the two states which made up the dual monarchy of Austria-Hungary from its creation in the Compromise of 1867 until its dissolution in 1918.
The Common Austro-Hungarian Army (Gemeinsame Armee) and the Austro-Hungarian Navy (K.u.k. Kriegsmarine) were institutions shared by the constituent parts of the dual monarchy, although both Austria and Hungary possessed their own defence ministries charged with the internal administration of the homeland troops (that is, the K.k. Landwehr and Magyar Királyi Honvédség), known as the K.k. Ministerium für Landesverteidigung and K.u. Honvédministerium respectively.