David Buchanan
David Buchanan may refer to:.
- David Buchanan (baseball), American professional baseball pitcher
- David Buchanan (cricketer), spin bowler for pre-first-class Warwickshire and the Gentlemen
- David Buchanan (footballer, born 1962), English professional footballer
- David Buchanan (footballer, born 1986), professional footballer
- David Buchanan (musician), American bass guitarist with Yankee Grey
- David Buchanan (One Life to Live), a fictional character from the soap opera One Life to Live
- David Buchanan (politician), member of the New South Wales Legislative Assembly, and later the Council
- David Buchanan (writer), Scottish writer, author of De Scriptoribus Scotis and relative of historian George Buchanan
- David M. Buchanan, United States Navy sailor and recipient of the Medal of Honor