Bruno Nikolaus Maria Weber (21 May 1915 in Trier – 23 September 1956 in Homburg) was a German physician, bacteriologist and Hauptsturmführer (1944), at Auschwitz, in the branch of the Hygiene Institute of the Waffen SS. He was chief of the Hygienic Institute. He organized experiments involving the interaction of different human blood types in unwilling prisoner-patients. He also conducted experiments using barbiturates and morphine derivatives for mind-control purposes. He was made Obersturmführer der reserve on the 20th of April, 1943, SS-Sanitatsamt, and given the SS number 420759.