William Douglas may refer to:
Earls and Dukes of Queensberry William Douglas, 1st Earl of Queensberry (c. 1582–1640), Scottish nobleman William Douglas, 1st Duke of Queensberry (1637–1695), Scottish nobleman and politician, grandson of the above William Douglas, 4th Duke of Queensberry (1724–1810), Scottish nobleman, great-grandson of the above
Earls of Angus William Douglas, 2nd Earl of Angus (c. 1398–1437), Scottish nobleman and soldier, grandson of the 1st Earl of Douglas William Douglas, 9th Earl of Angus (1533–1591), Scottish nobleman and supporter of Mary, Queen of Scots William Douglas, 10th Earl of Angus (1552–1611), Scottish nobleman, son of the above William Douglas, 1st Marquess of Douglas and 11th Earl of Angus (1589–1660), Scottish nobleman, son of the above
Earls of Douglas William Douglas, 1st Earl of Douglas (c. 1327–1384), Scottish nobleman, grandson of William le Hardi, Lord of Douglas William Douglas, 6th Earl of Douglas (c. 1424–1440), Scottish nobleman William Douglas, 8th Earl of Douglas (1425–1452), Scottish nobleman, cousin of the above
Earls of Morton William Douglas, 6th Earl of Morton (c. 1540–1606), Scottish nobleman William Douglas, 7th Earl of Morton (1582–1648), Scottish nobleman, grandson of the above William Douglas, 9th Earl of Morton (died c. 1681), Scottish nobleman, grandson of the above
Lords of Douglas William I, Lord of Douglas (died c. 1214), medieval nobleman of Flemish origin William Longleg, Lord of Douglas (c. 1220–c. 1274), Scoto-Norman nobleman, grandson of the above William le Hardi, Lord of Douglas (1243–c. 1298), Scottish soldier and governor of Berwick Castle, son of the above William IV, Lord of Douglas (died 1333), Scottish nobleman, grandson of the above
Other nobles and knights William Douglas, Lord of Liddesdale (c. 1300–1353), Scottish nobleman and soldier, cousin of the 1st Earl of Douglas Sir William Douglas of Nithsdale (c. 1370–c. 1392), Scottish knight Sir William Douglas of Drumlanrig (died 1427), Scottish knight, grandson of the 1st Earl of Douglas William Douglas of Cluny (c. 1428–c. 1475), Scottish nobleman, son of the 2nd Earl of Angus Sir William Douglas of Glenbervie (c. 1473–1513), Scottish knight killed at the Battle of Flodden William Douglas, 2nd Lord Mordington (1626–c. 1671), Scottish nobleman, grandson of the 10th Earl of Angus Sir William Douglas of Kelhead (died 1673), Scottish Covenanter colonel, son of the 1st Earl of Queensberry William Hamilton, Duke of Hamilton (born Lord William Douglas, 1634–1694), Scottish nobleman and politician, son of the 1st Marquess of Douglas William Douglas, 14th of Cavers (c. 1688–1748), Scottish landowner and politician, MP for Roxburghshire 1715–22, 1727–34, 1742–47, and for Dumfries Burghs 1722–27 Sir William Douglas, 4th Baronet (c. 1730–1783), Scottish landowner and politician, MP for Dumfries Burghs, great-great-grandson of Sir William Douglas of Kelhead Sir William Douglas, 1st Baronet (died 1809), Scottish mill owner, landowner and founder of Castle Douglas Lord William Douglas (1783–1859), Scottish politician and landowner, son of Sir William Douglas, 4th Baronet
Arts William Douglas (poet) (c. 1672–1748), Scottish writer, probable author of the poem "Annie Laurie" William Douglas (painter, born 1780) (1780–1832), Scottish miniature and portrait painter Sir William Fettes Douglas (1822–1881), Scottish painter Billy Douglas (musician) (1912–1978), American jazz trumpeter and vocalist Bill Douglas (1934–1991), Scottish film director Bill Douglas (musician) (born 1944), Canadian composer, pianist and bassoonist
Law William O. Douglas (1898–1980), United States Supreme Court justice Sir William Randolph Douglas (1921–2003), Chief Justice of Barbados
Military William Douglas of Kirkness (1688–1747), Scottish general and politician William Douglas (American soldier) (1742–1777), American military officer during the American Revolutionary War Sir William Douglas (British Army officer, born 1770) (1770–1834), British Army general in the War of 1812 Sir William Douglas of Balgillo (c. 1778–1818), British Army officer during the Napoleonic Wars William Bloomfield Douglas (1822–1906), Royal Navy officer and colonial official Sir William Douglas (British Army officer, born 1858) (1858–1920), British Army general in the First World War Sholto Douglas, 1st Baron Douglas of Kirtleside (William Sholto Douglas, 1893–1969), Marshal of the Royal Air Force
Politics William Lewis Douglas (1845–1924), governor of Massachusetts, 1905–1906 William Douglas (Canadian politician), member of the Legislative Assembly of New Brunswick, 1886–1892 William H. Douglas (1853–1944), U.S. representative from New York Billy Douglas (politician) (fl. 1918–1963), unionist activist from Northern Ireland William Douglas (Northern Ireland politician, born 1923) (1923–2013), Orangeman and Assembly member Sir William Douglas (civil servant) (1890–1953), Scottish civil servant
Sports William Douglas (cricketer, born 1848) (1848–1887), New Zealand cricketer Billy Douglas (rugby union) (1863–1943), Welsh rugby union player William Douglas (footballer, fl. 1890s), Scottish footballer for Newton Heath and Blackpool William Douglas (footballer, born 1890) (1890–1917), Scottish footballer for Queen's Park Bill Douglas (rugby union) (born c. 1898), Australian rugby union player William Douglas (cricketer, born 1903) (1903–1981), New Zealand cricketer William Douglas (footballer, fl. 1931–1934), Scottish footballer for Montrose, Brechin City, Blackburn Rovers, Dick, Kerr's XI and Rochdale in the 1930s William Douglas (boxer) (1940–1999), American boxer
Other people William Douglas of Whittingehame (c. 1540–1595), senator of the College of Justice at Edinburgh, and a Royal conspirator William Douglas (sea captain) (died 1791), Scottish and American maritime fur trader William Douglas (priest) (died 1819), Church of England priest, Archdeacon of Wilts, 1799–1804 William Douglas (advocate) (c. 1784–1821), Scottish advocate and member of parliament for Plympton Erle, 1812–1816 William O. Douglas, American who in 1878 received a patent for a lenticular truss bridge
Fictional characters Billy Douglas (One Life to Live), fictional character on the American television series One Life to Live
Other uses Sir William Douglas (1801 ship), a slave ship captured by the French
See also Douglas baronets William Douglass (disambiguation)