Robert Dunbar (1812–1890) was a Scottish mechanical engineer.
Robert Dunbar may also refer to:
Robert C. Dunbar (1878–1973), American football player and coach Robert Clarence Dunbar (1908–1966), American child who vanished in 1912; see Disappearance of Bobby Dunbar Robert Nugent Dunbar (1798–1866), British poet
See also Dunbar (surname)