Douglas (also spelled Douglass) is a masculine given name. It is also a common surname of Scottish origin, see Clan Douglas. It is a Gaelic name that means black water.

In politics:

• 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
• Douglas Christie, Canadian lawyer and political activist
• 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
• Jim Douglas (1952–), American politician
• 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
• William Lewis Douglas (1845–1924), American politician
• John Douglas (Queensland politician), Premier of Queensland, Australia

In sports:

• Hugh Douglas (1971–), American NFL football player
• James "Buster" Douglas (1960–), American heavyweight boxer
• Katie Douglas (1979–), American Women's National Basketball Association player
• Doug Weight, NHL hockey player

In wrestling:

• Andy Douglas (wrestler), American professional wrestler
• Dwayne Douglas Johnson (1972–), United States actor and currently inactive professional wrestler
• Shane Douglas (1964–), American professional wrestler

In music:

• Ashanti Shaquoya Douglas (1980–), American R&B singer
• Carl Douglas, Jamaican-born singer
• Jerry Douglas (musician) (1955–), American country music and bluegrass musician

In engineering:

• C. H. Douglas (1879–1952), Scottish engineer and pioneer of the social credit concept
• Donald Wills Douglas, Sr. (1892–1981), American aircraft industrialist

In military:

• Camp Douglas (Chicago), Union prisoner of war camp during the American Civil War
• Campbell Mellis Douglas (1841–^*), Canadian recipient of the Victoria Cross
• Douglas MacArthur (1880–1964), American General in World War II
• Fort Douglas (Utah), U.S. Army fort established in Utah Territory
• James Douglas (the Black) (1286–1330), Scottish soldier and knight in the Scottish Wars of Independence
• USS Douglas H. Fox (DD-779) (1944–1973), Allen M. Sumner class destroyer

In literature:

• Douglas Adams, the author of The Hitchhiker's Guide to the Galaxy and other sequels
• 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

In physics:

• James Douglas (physician) (1675–1742), Scottish physician and anatomist
• Michael R. Douglas, American physicist at Rutgers University

In television and film:

• 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–), American entertainer and former TV talk-show host
• Paul Douglas (actor) (1907–1959), American actor
• Paul Douglas (cameraman), British CBS News cameraman
• Sarah Douglas (1952–), English actress
• Shirley Douglas (1934–), Canadian actress, former wife of Donald Sutherland and mother of Kiefer Sutherland

In law:

• Doug Llewelyn, court reporter on The People's Court from 1981 through 1993
• William O. Douglas (1898–1980), American Associate Justice of the Supreme Court

In nobility:

• 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
• 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
• Douglas Douglas-Hamilton, 14th Duke of Hamilton (1903–1973), prominent Conservative Member of the British Parliament
• Earl of Douglas, extinct earldom
• 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
• Nina Mary Benita Douglas-Hamilton, Duchess of Hamilton (1878–1951), the daughter of Major Robert Poore
• 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
• 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

In fiction:

• Donald and Douglas, engines from Thomas the Tank Engine and Friends
• Douglas (mythology), figure in Celtic mythology
• Douglas Funnie, lead character in the animated series Doug
• Douglas Ramsey, a Marvel Comics superhero
• Lisa Douglas, character in the 1960s CBS situation comedy Green Acres
• Oliver Wendell Douglas, character in the 1960s CBS situation comedy Green Acres
• Widow Douglas, character in the Mark Twain novel Tom Sawyer

In geography:

• Burnaby—Douglas, Canadian federal electoral district in British Columbia
• Camp Douglas, Wisconsin, village in Juneau County, Wisconsin, United States
• Castle Douglas, town in Dumfries and Galloway, Scotland
• Douglas, Alabama, town in Marshall County, Alabama, in the United States
• Douglas, Arizona, city in Cochise County, Arizona
• Douglas, Chicago, neighborhood located on the south side of Chicago, Illinois
• Douglas, Cork, suburb of Cork, Ireland
• Douglas, Georgia, city in Coffee County, Georgia, United States
• Douglas, Isle of Man, the capital of the Isle of Man
• Douglas, Lanarkshire, village near Lanark, Scotland
• Douglas, Massachusetts, town in Worcester County, Massachusetts, United States
• Douglas, Michigan, city in Allegan County in the U.S. state of Michigan
• Douglas, Nebraska, village in Otoe County, Nebraska, United States
• Douglas, North Dakota, city in Ward County, North Dakota in the United States
• Douglas, Oklahoma, town in Garfield County, Oklahoma, United States
• Douglas, Ontario, mostly Catholic community of approximately 300 residents in Renfrew County, Ontario
• Douglas, Wisconsin, town in Marquette County, Wisconsin, United States
• Douglas, Wyoming, city in Converse County, Wyoming, United States
• Douglas Apsley National Park, national park in Tasmania
• Douglas County, Colorado, suburban county located in the southern portion of the Denver-Aurora metropolitan area of Colorado
• Douglas County, Georgia, county located in the U.S. state of Georgia
• Douglas County, Illinois, county located in the U.S. state of Illinois
• Douglas County, Kansas, county located in the U.S. state of Kansas
• Douglas County, Minnesota, county located in the U.S. state of Minnesota
• Douglas County, Missouri, county located in the U.S. state of Missouri
• Douglas County, Nebraska, county located in the U.S. state of Nebraska
• Douglas County, Nevada, county located in the northwestern part of the U.S. state of Nevada
• Douglas County, Oregon, county located in the U.S. state of Oregon
• Douglas County, South Dakota, county located in the U.S. state of South Dakota
• Douglas County, Washington, county located in the U.S. state of Washington
• Douglas County, Wisconsin, county located in the U.S. state of Wisconsin
• Douglas Island, island near Juneau, Alaska
• Douglas Township, Minnesota, township in Dakota County, Minnesota, United States
• Douglas Water, village near Lanark, Scotland
• East Douglas, Massachusetts, census-designated place and village located in the town of Douglas in Worcester County, Massachusetts
• Mount Douglas (Alaska), stratovolcano located south of Kamishak Bay at the northern part of the Alaska Peninsula
• Mount Douglas (Antarctica), striking pyramidal peak
• Mount Douglas (Greater Victoria), prominent hill in the Greater Victoria municipality of Saanich, British Columbia
• New Douglas, Illinois, village in Madison County, Illinois, United States
• Point Douglas, historical community and provincial electoral division in the Canadian province of Manitoba
• Port Douglas, Queensland, coastal resort town in Queensland, Australia
• Regina Douglas Park, provincial electoral district for the Legislative Assembly of Saskatchewan, Canada
• River Douglas, river in Lancashire in the north west of England

In transportation:

• Aircraft manufactured by McDonnell Douglas, various aircraft models
• Aircraft of the Douglas Aircraft Corporation, various aircraft models
• Charlotte/Douglas International Airport, airport located in Charlotte, North Carolina
• Douglas Aircraft Company, American aircraft manufacturer
• McDonnell Douglas, American aerospace company

In artistry:

• Aaron Douglas (1900–1979), American artist
• Douglas Hyde Gallery, art gallery at Trinity College, Dublin, Ireland

In biology:

• David Douglas (1799–1834), Scottish botanist
• Douglas Squirrel, a squirrel of the species Tamiasciurus douglasii
• Douglas-fir, a coniferous tree of the genus Pseudotsuga
• Pouch of Douglas, extension of the peritoneal cavity between the rectum and back wall of the uterus in the female human body

In business:

• Brewster-Douglas, public housing project located in Detroit, Michigan
• Cobb-Douglas, functional form of production functions in economics
• Douglas AG, leading European lifestyle and retail company
• Fort Douglas (Canada), fort of the Hudson Bay Company
• Gustaf Douglas (1938–), Swedish businessman, vice chairman and largest single shareholder in security firm Securitas AB

In other fields:

• Jesse Douglas (1897–1965), American mathematician and professor of mathematics
• John Douglas (1721–1807), Scottish man of letters and Anglican bishop
• Mary Douglas (1921–), British anthropologist
• Michael Dutton Douglas (1945–1963), road accident victim

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