Jan Marco Leimeister (born April 7, 1974) is a German university professor for business information systems from Bietigheim-Bissingen. He is tenured professor of business information systems and director at the Institute of Information Management (IWI HSG). at the University of St. Gallen as well as head of the Department of Information Systems and director at the Research Center for Information System Design (ITeG) at the University of Kassel.