Byng , Julian Hedworth George Byng, First Viscount (1862–1935), a British army officer who won distinction in World War I. Byng was governor general of Canada, 1921–26. He was commissioner of London's metropolitan police, 1928–31, and was made a field marshal in 1932.

Byng entered the army at an early age and won many honors in the Boer War (1899–1902). By 1909 he had become a major general, and three years later he took command of the British army in Egypt. Recalled from Egypt at the outbreak of war with Germany, General Byng commanded a cavalry division during 1914–15. His troops checked the Germans at the first battle of Ypres. In 1916 Byng commanded the Canadian Corps on the western front. In 1917 Byng led the British Third Army in a surprise attack on Cambrai in which two German divisions were destroyed and 10,000 prisoners were taken. The action at Cambrai involved the first successful use of tanks in battle.