Roy Scott Dunbar is an American astronomer, planetologist and discoverer of comets and minor planets.
[2] Dunbar played an active role in the Palomar Planet-Crossing Asteroid Survey.
[1] His most notable discoveries include the potentially hazardous object and Aten asteroid 3362 Khufu, which he co-discovered with Maria A. Barucci, as well as the near-Earth object, Mars-crosser and Aten asteroid, 3551 Verenia.
Together with Eleanor Helin he co-discovered the minor planets 3360 Syrinx, 6065 Chesneau, 6435 Daveross and 7163 Barenboim.
The main-belt asteroid 3718 Dunbar, discovered by Eleanor Helin and Schelte Bus, is named after him.