William Augustus Guy (13 June 1810 – 10 September 1885) was a British physician and medical statistician.[1] In 1842, he was appointed professor of forensic medicine at King's College London and assistant physician at King's College Hospital, 1842; he was dean of the faculty of medicine, 1846–58.The Society still presents the Guy Medals (in gold, silver and bronze) in his memory.He was a founder of the Health of Towns Association and a member of the Commission on Penal Servitude and Criminal Lunacy.Other major works were: Guy published lectures, and contributed papers to the Statistical Society, including the Influence of Employments on Health, The Duration of Life among different Classes, Temperance and its relation to Mortality, The Mortality of London Hospitals, Prison Dietaries, and John Howard's True Place in History.