The II ANZAC Corps was an Australian and New Zealand First World War army corps. Formed in early 1916 in Egypt in the wake of the failed Gallipoli campaign, it initially consisted of two Australian divisions, and was sent to the Western Front in mid-1916. It then took part in the fighting in France and Belgium throughout 1916 and 1917, during which time it consisted of New Zealand, Australian and British divisions. In November 1917, the corps was subsumed in to the Australian Corps, which concentrated all five Australian infantry divisions. After this, the corps was reformed as the British XXII Corps.

Corps is a term used for several different kinds of organization. A military innovation by Napoleon I, the formation was first named as such in 1805. The size of a corps varies greatly, but two to five divisions and anywhere from 40,000 to 80,000 are the numbers stated by the US Department of Defense.