John Macleod

Nobel prize-winning Scottish physician and physiologist; co-discoverer of insulin.

John Macleod (John James Rickard Macleod, 6 September 1876 – 16 March 1935) was an Scottish physiologist.[1] He won the 1923 Nobel Prize in Physiology or Medicine, with Frederick Banting, for the discovery of insulin.[2]

John James Rickard Macleod
J.J.R. Macleod ca. 1928.png
Born6 September 1876
Cluny, Scotland
Died16 March 1935
Alma materUniversity of Aberdeen
University of Leipzig
Known forInsulin
AwardsNobel Prize in Physiology or Medicine (1923)
Scientific career
InstitutionsUniversity of Toronto, Toronto, Canada


  1. "Biography of John Macleod". The Nobel Foundation. Retrieved 2009-01-05. CS1 maint: discouraged parameter (link)
  2. "The Nobel Prize in Physiology or Medicine 1923". Nobel Foundation. Retrieved 2007-07-28. CS1 maint: discouraged parameter (link)