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:
“The wonderful purity of nature at this season is a most pleasing fact.... In the bare fields and tinkling woods, see what virtue survives. In the coldest and bleakest places, the warmest charities still maintain a foothold.”
—Henry David Thoreau (1817–1862)
“Virtuous people are simply those who have ... not been tempted sufficiently, because they live in a vegetative state, or because their purposes are so concentrated in one direction that they have not had the leisure to glance around them.”
—Isadora Duncan (1878–1927)