Ernst Rudin was a German psychiatrist and eugenicist who advocated, with Alfred Hioche and Karl Bindong, of the idea that doctors should destroy "life devoid of value." He headed the Rudin was among the architects of the July 1933 Law for the Protection of Hereditary Health, which established the Nazi criteria for mandatory sterilization. Rudin was one of Josef Mengele's university teachers. He helped shape the medical aspects of Nazi race and biological ideology.
In 1935, he was chairman of the German Association of Neurologists and Psychiatrists. 
- Gerald Posner and John Ware (1986), Mengele: the Complete Story, McGraw-Hill, ISBN 0070505985, pp. 9-10
- Henry Friedlander (1997), The Origins of Nazi Genocide: From Euthanasia to the Final Solution, University of North Carolina Press