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Joachim Mrugowsky (August 15, 1905 in Rathenow, Brandenburg – June 2, 1948, Landsberg Prison, Landsberg am Lech) was a German hygienist. He was Associate Professor, Medical Doctorate, Chief of Hygiene Institute of the Waffen-SS, Senior Hygienist at the Reich, SS-Physician, SS and Waffen-SS Colonel, and defendant in the Doctors' Trial.
Early life and education 
Mrugowsky's father was a general practitioner, who was killed at the beginning of World War I. In 1925, Mrugowsky began his studies of natural sciences and medicine in Halle. He completed the studies in 1930-1931 with a medical doctorate and a doctorate of natural sciences. 1930-1931 he was the Hochschulgruppenführer (University group leader) of the National Socialist German Students' League branch at the University of Halle. After a two-year internship, he became an assistant at the Hygiene Institute of the University of Halle.
Mrugowsky was made an associate professor in the area of hygiene at the University of Berlin, September 1944.
Career in the Third Reich 
Since 1930, Mrugowsky had been involved in the Nazi ideology, first being the group leader of a local National Socialist German Students' Association then the NSDAP party member (No. 210,049). In 1931, he joined the SS, where he achieved the rank of Oberführer in both the General SS and the Waffen SS.
In 1940, as the troop physician of an SS "Das Reich" Division hospital company, Mrugowsky participated in the conquest of Western Europe.
Trial and execution 
He was implicated in all medical experiments, with the exception of the aviation ones, which were conducted on concentration camp prisoners. Mrugowsky was condemned to death in August 1947, and executed on June 2, 1948.