Steffen Lauritzen (born 22 April 1947) is former Head of the Department of Statistics at the University of Oxford and Fellow of Jesus College, Oxford, and currently Professor of Statistics and the University of Copenhagen. He is a leading proponent of mathematical statistics and graphical models.He Studied Statistics at the University of Copenhagen, Denmark, completing the degree of Candidatus statisticae (M.Sc. level) in 1972 and Licentiatus statisticae (PhD level) in 1975.