David or Dave Douglas may refer to:

• David Douglas (director) (born 1953), Canadian cinematographer, director and writer
• Dave Douglas (trumpeter) (born 1963), American jazz trumpeter
• Dave Douglas (drummer) (born 1979), American drummer
• David Douglas, character in An Act of Murder

• David Douglas, 12th Marquess of Queensberry (born 1929), Scottish nobleman
• David Douglas, 7th Earl of Angus (c. 1515–1558), Scottish nobleman

• Dave Douglas (golfer) (1918–1978), American professional golfer
• David Douglas (offensive lineman) (1963–2016), American football player
• David Douglas (rower) (born 1947), Australian
• David Douglas (fighter) (born 1982), American mixed martial arts fighter
• David Douglas (wide receiver) (born 1989), American football wide receiver

• David Douglas, Lord Reston (1769–1819), Scottish judge and Adam Smith's heir
• David Douglas (botanist) (1799–1834), Scottish botanist
• David Douglas (publisher) (1823–1918), Scottish publisher
• David L. Douglas (1845–1913), American businessman and politician
• David C. Douglas (1898–1982), British historian of the Normans
• David "Dathaí" Douglas (died 2016), an Irish criminal
• David Douglas High School, a public high school in Portland, Oregon

• David Douglass (disambiguation)
• David Douglas Duncan (1916–2018), American photojournalist
• David Douglas Wagener (1792–1860), U.S. politician
• Mount David Douglas, a mountain in Oregon named after the Scottish botanist