Mladen Vranic, O.C., O.Ont, MD, DSc, FRSC, FRCP(C), FCAHS, born April 3, 1930, is a Croatian-born diabetes researcher, best known for his work in tracer methodology, exercise and stress in diabetes, the metabolic effects of hormonal interactions, glucagon physiology, extrapancreatic glucagon, the role of the direct and indirect metabolic effects of insulin and the prevention of hypoglycemia.
Vranic has been recognized by a number of national and international awards for his research contributions, mentoring and administration including the Orders of Canada (Officer) and Ontario.