Jim Dempster

William James Dempster
Born(1918-03-15)15 March 1918
Died27 July 2008(2008-07-27) (aged 90)
NationalityBritish
EducationUniversity of Edinburgh
Medical career
ProfessionSurgeon
InstitutionsSt Mary's Hospital, London
Sub-specialtiesTransplant researcher

William James Dempster (15 March 1918 – 27 July 2008) was a British surgeon and researcher in organ transplantation at St Mary’s Hospital, London. He published more than 100 scientific reviews and papers on kidney transplant rejection in dogs, confirming that rejection was an example of immune response, mediated by serum antibodies.