Claus Karl Schilling (born 5 July 1871 in Munich, Bavaria, Germany; died 28 May 1946 in Landsberg am Lech, Bavaria, West Germany), also recorded as Klaus Schilling, was a German tropical medicine specialist, particularly remembered for his infamous participation in the Nazi human experiments at the Dachau concentration camp during World War II.Though never a member of the Nazi Party and a recognized researcher before the war, Schilling became notorious as a consequence of his enthusiastic participation in human research under both Fascist Italy and Nazi Germany.