Ferdinand Karewski (5 November 1858 - 31 October 1923) was a German surgeon born in Stettin.
He studied medicine in Berlin, where one of his instructors was James Israel (1848–1926). He worked as a surgeon at the Jewish Hospital (Jüdischen Krankenhaus) in Berlin as an assistant, and later as director of the policlinic. He is remembered for experiments involving the effects of puerperal secretions.[1]