Baruj Benacerraf (b. Oct. 29, 1920, Caracas, Venezuela-d. Aug. 2, 2011, Jamaica Plain, MA) was the 1980 Nobel Prize winner for Physiology or Medicine for his work on immunology. He is the brother of philosopher Paul Benecerraf and moved to the United States in 1940. He received a BS from Columbia University and a MD from Medical College of Virginia. He was a researcher at Columbia University College of Physicians and Surgeons, NYU and the NIH. In 1970 he joined the faculty at Harvard University of Medical School.