William John Hughes Butterfield, Baron Butterfield, OBE, FRCP (1920-22 July 2000) was a leading British medical researcher, clinician and administrator. Positions he held during his distinguished career included Professor of Experimental Medicine at Guy's Hospital, Vice-Chancellor of the University of Nottingham, Regius Professor of Physic at the University of Cambridge, Master of Downing College, Cambridge and Vice-Chancellor of the University of Cambridge. He was made a life peer in 1988 as Baron Butterfield, of Stechford in the County of West Midlands.