Ralph Beattie Blacket AO (July 11, 1919 – 2010) was an Australian Foundation Professor of Medicine at the University of New South Wales in Australia.
After the war Blacket completed his residency at the Royal Prince Alfred Hospital.
He was a Hallstrom Fellow in Cardiology, and studied at Sydney University while lecturing part-time, graduating with a Doctor of Medicine in 1957.
He researched the disease Beriberi, and his thesis won the Peter Bancroft Prize.
[6] He and Joan Mary Woodhill conducted research about diet, cholesterol and heart disease.