David Dunbar may refer to: David Dunbar, of the Dunbar baronets David Dunbar (actor) (1886–1953), Australian film actor David Dunbar (colonel), 18th century surveyor of king's woods in North America, and Lt. Gov. of New Hampshire David Dunbar Buick (1854–1929), Scottish-born American inventor, best known for founding the Buick Motor Company David Dunbar-Nasmith (1921–1997), Royal Navy officer