|Sir Charles Gwynn|
|Born||4 November 1870
County Down, Ireland
|Died||12 November 1962
|Years of service||1889–1931|
|Commands held||Staff College, Camberley|
|Battles/wars||World War I|
|Awards||Knight Commander of the Order of the Bath
Companion of the Order of St Michael and St George
Distinguished Service Order
Major-General Sir Charles William Gwynn, KCB, CMG, DSO, FRGS (4 November 1870 – 12 November 1962) was an Irish born British Army officer, geographer, explorer and author of works on military history and theory.
Born the son of John Gwynn (1827–1917), Regius Professor of Divinity at Trinity College, Dublin, and his wife, Lucy Josephine (1840–1907) daughter of the Irish nationalist William Smith O'Brien, Gwynn was educated at St. Columba's College, Dublin and at the Royal Military Academy, Woolwich and was commissioned a second lieutenant in the Royal Engineers on 15 February 1889. 
Promoted to lieutenant on 15 February 1892, he saw active service in West Africa 1893–94 in operations against the Sofas, and in 1897 joined the geographical section of the Intelligence Branch of the War Office. Following the reconquest of Sudan from the Mahdi, Gwynn undertook survey work there, remaining until 1904. He was promoted to captain on 15 February 1900, received a brevet promotion to major on the following day, and was appointed a Companion of the Order of St Michael and St George (CMG) for his survey work determining the Sudanese/Abyssinian border.
In June 1911, he was detailed to Australia as an instructor at the Royal Military College, Duntroon, where he served as the director of military art, instructing tactics, strategy, and military history. With the outbreak of World War I, he returned to England, where he unsuccessfully sought a posting to France. In July 1915, he was sent to the Middle East where he was assigned as the GSO1 of the Australian 2nd Division. He was eventually posted to serve as the Chief of Staff of the II ANZAC Corps, a position he held until the end of the war. His brother, Stephen, and Stephen's son, Dennis, also served in the Great War.
After World War I, he served in a variety of staff assignments, culminating in May 1926 when he was made Commandant of the Staff College, Camberley. Upon his retirement in 1931, he was appointed a Knight Commander of the Order of the Bath.
Publications by Charles Gwynn
- The Frontiers of Abyssinia: a retrospect Journal of the Royal African Society, Vol. 36, No. 143 (Apr., 1937), pp. 150–161
- Imperial Policing London: Macmillan, 1934
- The Geographical Journal, Vol. 129, No. 2 (Jun., 1963), pp. 251–251
- Liddell Hart Centre for Military Archives
- The London Gazette: . 20 February 1900.
- The London Gazette: . 23 February 1900.
- Gavin Long, 'Gwynn, Sir Charles William (1870–1963)', Australian Dictionary of Biography, Volume 9, Melbourne University Press, 1983, pp 146–147
|Commandant of the Staff College, Camberley