Major-General Sir William Douglas, KCMG, CB, DSO (13 August 1858 – 1920) was a British Army officer.

[5] He became a staff officer with Irish Command in March 1906[3] and was appointed a Companion of the Order of the Bath in June 1908.

[9] He deployed with his division to Egypt in September 1914, in the opening weeks of the First World War, and commanded it during the Gallipoli campaign in 1915 and for which he was later appointed a Knight Commander of the Order of St Michael and St George.

[10] He went on to command the division, numbered the 42nd in 1915, in the Middle Eastern theatre before returning to England in March 1917.

[3] Douglas married, in December 1885, Ellen Lytcott (a Lady of Grace of St John of Jerusalem), daughter of Samuel Taylor, Crown Solicitor, Barbados.