David Duncan may refer to:
- David Duncan (ski cross) (born 1982), Canadian ski cross racer
- Dave Duncan (baseball) (born 1945), Major League Baseball player
- Dave Duncan (writer) (born 1933), Canadian writer
- David Duncan (accountant) (born 1960), United States government's star witness in the Arthur Andersen trial
- David Duncan (UK politician) (1830–1886), British merchant and Liberal politician
- David Duncan (writer) (1913–1999), American screenwriter and novelist; wrote the screenplay for The Time Machine
- David Douglas Duncan (born 1916), American photographer
- David Ewing Duncan (born 1958), American journalist
- David F. Duncan (born 1947), epidemiologist and expert on drug abuse
- David James Duncan (born 1952), American novelist, essayist, and fly-fisher
- Davie Duncan (1921–1991), Scottish footballer
- David Duncan (minister) (1789–1829), Scottish Presbyterian Minister
Famous quotes containing the words david and/or duncan:
“Have not men improved somewhat in punctuality since the railroad was invented? Do they not talk and think faster in the depot than they did in the stage-office?”
—Henry David Thoreau (1817–1862)
“I had learned to have a perfect nausea for the theatre: the continual repetition of the same words and the same gestures, night after night, and the caprices, the way of looking at life, and the entire rigmarole disgusted me.”
—Isadora Duncan (1878–1927)