(occasionally spelled ''' Douglass ''') is a common surname of Scottish origin, thought to derive from the Gaelic ''Dubh Glas'', meaning ''Black or Black/Green Water'', referring to locations either at Douglas in Scotland or Douglas in Ireland.
is also used as a masculine, and very occasionally feminine, given name.
- Lord Alfred Douglas (1870–1945), British poet
- Gavin Douglas (1474–1522), Scottish poet and bishop
- Keith Douglas (1920–1944), English poet of World War II
- Marjory Stoneman Douglas (1890–1998), American conservationist and writer
- Mark Douglas-Home , Scottish editor-in-chief of ''The Herald'' in Glasgow, Scotland
- Michael Douglas , American actor
- Michael Douglas , American author
- Norman Douglas (1868–1952), British writer
- William Douglas-Home , British playwright
- Alexander Douglas-Hamilton, 10th Duke Of Hamilton (1767–1852), Scottish politician
- Alfred Douglas-Hamilton, 13th Duke Of Hamilton (1862–1940), Duke in the Peerage of Scotland
- Sir Archibald Douglas (k. 1333), Guardian of Scotland, Leader of Scots army at Halidon Hill
- Archibald Douglas, 5th Earl Of Angus (1450–1514), warden of the east marches
- Archibald Douglas, 8th Earl Of Angus (1555–1588), the son of David, 7th earl
- Archibald Douglas, 4th Earl Of Douglas
- Douglas Douglas-Hamilton, 14th Duke Of Hamilton (1903–1973), Aviator, politician and landowner
- Earl Of Douglas , extinct earldom
- George Douglas, 1st Earl Of Angus ( 1378 - 1402 )
- '' Guillelmo De Duglas '', son of the mythical Sholto Douglas , progenitor of the House. Served Charlemagne in Italy in the late 8th c.
- House Of Douglas , Scottish noble house
- James Douglas, 2nd Earl Of Douglas (1358–1388), influential lord in the Kingdom of Scotland
- James Douglas, 4th Earl Of Morton (c. 1525–1581), the last of the four regents of Scotland during the minority of King James VI
- James Douglas, 4th Duke Of Hamilton (1658–1712), eldest son of William Douglas, Duke of Hamilton and his wife Anne
- James Douglas-Hamilton, Baron Selkirk Of Douglas (1942–), the younger son of the 14th Duke of Hamilton and Brandon
- John Douglas, 2nd Earl Of Morton (d.1513), British nobility
- John Sholto Douglas, 9th Marquess Of Queensberry (1844–1900), Scottish nobleman
- Margaret Douglas (1515–1578), the daughter of Archibald Douglas, 6th Earl of Angus, and Margaret Tudor
- Marquess Of Douglas And Clydesale , subsidiary title of the Duke of Hamilton
- Nina Mary Benita Douglas-Hamilton, Duchess Of Hamilton (1878–1951), the daughter of Major Robert Poore
- Sholto Douglas (d.unknown), Mythical progenitor of the houde of Douglas
- Thomas Douglas, 5th Earl Of Selkirk (1771–1820), Scottish philanthropist who sponsored immigrant settlements in Canada
- Walter Montagu-Douglas-Scott, 5th Duke Of Buccleuch (1806–1884), British politician and nobleman
- Sir William Douglas The Hardy , (c.1240–d. Tower of London 1299), Governor of Berwick Castle , Scottish warrior and freedom-fighter
- William Douglas, 2nd Earl Of Angus (c. 1398 - 1437 )
- William Douglas, 1st Duke Of Queensberry (1637–1695), Scottish politician
- William Douglas, 10th Earl Of Angus (1553–1611), the son of William, the 9th earl
- William Douglas-Hamilton, Duke Of Hamilton (1635–1694), the son of William Douglas, 1st Marquess of Douglas
- Alec Douglas-Home (1903–1995), British baron, politician, and prime minister
- Aretas Akers-Douglas, 1st Viscount Chilston (1851–1926), British statesman and politician
- Denzil Douglas (1953–), Prime Minister of St Kitts and Nevis
- Frederick Douglass (1818–1895), American abolitionist, editor, orator, author, statesman, and reformer
- Helen Gahagan Douglas (1900–1980), American actress and politician
- James Douglas (Governor) (1803–1877), Scottish-Canadian governor of the colony of Vancouver Island
- James Douglas-Hamilton, Baron Selkirk Of Douglas PC,QC (1942-), Scottish nobleman, Conservative politician
- Jim Douglas (1952–), American politician
- John Douglas (Queensland Politician) , Premier of Queensland, Australia
- Paul Douglas (1892–1976), American economist and United States Senator from Illinois
- Roger Douglas (1973–), former New Zealand politician
- Rosie Douglas (1941–2000), Dominican politician
- Stephen A. Douglas (1813–1861), American politician
- Tommy Douglas (1904–1986), Canadian politician, Premier of Saskatchewan, and father of Shirley Douglas
- Walburga Habsburg Douglas , Austrian-Swedish politician, member of the Swedish parliament since 2006
- William Lewis Douglas (1845–1924), American politician
- Don Douglas (1905-1945), Scottish film actor
- Donald Douglas , British actor
- Donna Douglas (1933–), American actress
- Gordon Douglas (director) (1907–1993), American actor and director
- Hal Douglas , voice actor
- Illeana Douglas (1965–), American actress
- Kirk Douglas (1916–), American actor
- Kyan Douglas (1970–), American cosmetologist
- Melvyn Douglas (1901–1981), American actor
- Michael Douglas (1944–), American actor and producer
- Mike Douglas (1925–2006), American entertainer and former TV talk-show host
- Paul Douglas (actor) (1907–1959), American actor
- Paul Douglas (cameraman) , British CBS News cameraman
- Saba Douglas-Hamilton (1970–), Television presenter and Naturalist
- Sarah Douglas (1952–), English actress
- Shirley Douglas (1934–), Canadian actress, former wife of Donald Sutherland and mother of Kiefer Sutherland
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