Robert George Clements (1880 – 30 May 1947) was a physician and a fellow of the Royal College of Surgeons from Belfast, Northern Ireland.

His first wife, Edith (or Edyth) Annie Mercier, who was active in the Ulster Women's Unionist Council[4] and the daughter of a wealthy Belfast grain merchant, Dufferin Flour and Meal Mills owner William Turpin Mercier,[5] died of "sleeping sickness" in 1920, aged 40.

His second wife, Mary McCreary, was the daughter of an Irish industrialist based in Manchester;[5] her 1925 death was ascribed to endocarditis, at aged 25.

[5] His last wife, Amy Victoria "Vee" Barnett, (often written as Burnett)[6] was the daughter of one of Clements's few patients, Reginald W. G. Barnett, the wealthy managing director of the Liverpool Cartage Company, who had died suddenly in January 1940, six months before to his daughter's wedding in June.

[10][11] Both Clements and the other doctor diagnosed myeloid leukemia, which was confirmed by a botched post-mortem carried out by another physician, James Houston.