William Douglas may refer to:

• 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

• 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

• 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

• 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 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

• 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
• 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

• 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
• Billy Douglas (One Life to Live), fictional character on the American television series One Life to Live

• William O. Douglas (1898–1980), United States Supreme Court justice
• Sir William Randolph Douglas (1921–2003), Chief Justice of Barbados

• 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

• 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

• 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 J. Douglas (footballer), Scottish footballer for Montrose, Brechin City, Blackburn Rovers, Dick, Kerr's XI and Rochdale in the 1930s
• William Douglas (boxer) (1940–1999), American boxer

• 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

• Sir William Douglas (1801 ship), a slave ship captured by the French
• Douglas baronets
• William Douglass (disambiguation)
• All pages with titles beginning with William Douglas

Topics referred to by the same term

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