John Leak, VC (c. 1892 – 20 October 1972) was an Australian recipient of the Victoria Cross, the highest award for gallantry in battle that could be awarded at that time to a member of the Australian armed forces. Leak enlisted in the Australian Imperial Force in early 1915, and served with the 9th Battalion in the Gallipoli Campaign during the First World War. Evacuated suffering from dysentery, Leak rejoined his battalion after it had been withdrawn to Egypt. Along with his unit, he transferred to the Western Front in France and Belgium, where he participated in the Battle of Pozières in July 1916. He was awarded the Victoria Cross for his actions during the battle. The following month he was seriously wounded in the Battle of Mouquet Farm.