Sergio Fabbrini (born 21 February 1949) is an Italian political scientist. He is Dean of the Department of Political Science and Professor of Political science and International relations at Libera Università Internazionale degli Studi Sociali Guido Carli in Rome, where he holds the Intesa Sanpaolo Chair on European Governance. He has also the Pierre Keller Visiting Professorship Chair at the Harvard University, Kennedy School of Government (2019/2020). He is the co-founder and former Director of the LUISS School of Government He is also recurrent professor of Comparative Politics at the Institute of Governmental Studies at the University of California at Berkeley.