In this contribution we describe the life and work of the Berlin physician Carl Posner (1854-1928). We present his central role as a member of the founding generation of urology, andrology, and academic sexology in Germany. His clinical work, research and publication illustrate the central role these new disciplines played in the urological field. Finally, we describe how Posner is remembered in the history of urology and sexology.
Keywords: Constitutional medicine; History of andrology; History of medicine; History of sexology; History of urology.