The XVI Army Corps / XVI AK (German: XVI. Armee-Korps) was a corps level command of the German Army before and during World War I. It was assigned to the VII Army Inspectorate, which became the 5th Army at the start of the First World War. It was still in existence at the end of the war in the 3rd Army, Heeresgruppe Deutscher Kronprinz on the Western Front.