Sandra Ciesek (German pronunciation: [ˈzandʁa ˈt͡siːzɛk] ; born 1978) is a German physician and virologist. She is the director of the Institute of Medical Virology at the Universitätsklinikum Frankfurt and professor of medical virology at the Goethe University Frankfurt.[1] Her main areas of research include new forms of therapy for hepatitis C and, more recently, the search for drugs against COVID-19.