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:
“All his works might well enough be embraced under the title of one of them, a good specimen brick, “On Heroes, Hero-Worship, and the Heroic in History.” Of this department he is the Chief Professor in the World’s University, and even leaves Plutarch behind.”
—Henry David Thoreau (1817–1862)
“Any intelligent woman who reads the marriage contract and then goes into it, deserves all the consequences.”
—Isadora Duncan (1878–1927)