Waldemar Hoven (10 February 1903 – 2 June 1948) was a Nazi physician at Buchenwald concentration camp,[1] and convicted war criminal for conducting human experiments regarding typhus which led to the deaths of many concentration camp prisoners, and as one of the organizers of the euthanasia program Aktion T4; this Nazi initiative resulted in the systematic murder of 275,000 to 300,000 disabled people.

In the 1930s, Hoven went to Paris, where he had an affair with an American woman who gave him an extremely valuable gold cigarette case.

Hoven finally returned home to Freiburg in 1933, where he completed his high school studies.

[4] Hoven was involved in the administration of medical experiments regarding typhus and the tolerance of serum containing phenol, and which led to the deaths of many inmates.

[6] He was arrested by the Nazis on 12 September 1943, accused of giving a lethal injection of phenol to Hauptscharführer Rudolf Köhler, an SS officer who was a potential witness in an investigation against Ilse Koch, with whom Hoven was rumoured to be having an affair.