Sergei M. Guriev (Russian: Серге́й Маратович Гуриев, Ossetian: Гуриаты Мараты фырт Серго) is a Russian economist, the chief economist at the European Bank for Reconstruction and Development. He is a professor of economics (on leave) at the Instituts d'études politiques in Paris (Sciences Po). He was a Morgan Stanley Professor of Economics and a Rector at the New Economic School (NES) in Moscow until he resigned on 30 April 2013 and fled to France. He joined NES in 1998 focusing on research and teaching and became a full-time permanent faculty member in 1999. He became the school's Rector in 2004. He was also teaching graduate courses in economics of development, microeconomic theory and contract theory.
His primary interests are in contract theory, corporate governance, labor mobility, political economics, economics of development and transition. His work has been published in international refereed journals, including American Economic Review, Journal of European Economic Association, Journal of Economic Perspectives, Economic Journal and American Political Science Review. He has been running a monthly column in Forbes Russia (in 2006-2013) and a biweekly column for the leading Russian business daily Vedomosti (in 2003-2013). He has also contributed numerously to columns in the New York Times, Financial Times, Washington Post, Project Syndicate, Moscow Times.