Stefan R. Bornstein (November 5, 1961 in Oberstdorf, Germany) is the director of the Centre for Internal Medicine and the Medical Clinic and Policlinic III at the of the Technical University of Dresden as well as the medical faculty's vice dean of international affairs and development and a member of the supervisory board of the University Hospital of Dresden. Furthermore, he is chair and honorary consultant for diabetes and endocrinology at King's College London.Previously, Bornstein worked as assistant director and professor of endocrinology at the University Hospital of Düsseldorf, as unit chief at the National Institutes of Health in Bethesda, Maryland and held the Heisenberg-scholarship of the Deutsche Forschungsgemeinschaft.