Robert George Clements (1880 – 30 May 1947) was a physician and a fellow of the Royal College of Surgeons from Belfast, Northern Ireland. Clements is suspected of the murder of his fourth wife, who died of morphine poisoning. His first three wives also died before him, raising suspicions that he murdered them as well. Clements carried out suicide by an overdose of morphine before the police came to arrest him.