Roger Guesnerie

Roger Guesnerie was a French academic and economist. He was last the Chaired Professor of Economic Theory and Social Organization of the Collège de France, Director of Studies at the École des hautes études en sciences sociales, and the chairman of the board of directors of the Paris School of Economics.

Life and career

Guesnerie was born in Sainte-Gemmes-le-Robert on 17 February 1943. He studied at École Polytechnique and the École Nationale des Ponts et Chaussées, and received his doctorate in economics from the University of Toulouse in 1982. He taught at the London School of Economics, the École Polytechnique, and at Harvard University. Guesnerie published widely in economics, including in public economics, in the theory of incentives and economic mechanisms, and in the theory of general economic equilibrium.
Guesnerie died in Paris on 4 January 2026, at the age of 82.

Guesnerie was elected as president of several scholarly societies, notably the French Association of Economic Sciences, the Econometric Society, and the European Economic Association. Guesnerie was elected as a foreign honorary member of the American Economic Association and as a foreign member of the American [Academy of Arts and Sciences]. He served as co-editor of Econometrica and as foreign editor of the Review of Economic Studies. In France, Guesnerie's research has been recognized with the CNRS Silver Medal; he was appointed a knight of the Legion of Honour in 2005 and knight of the Ordre national du Mérite in 1987.

Roger Guesnerie and Henry Tulkens, 2008, The Design of Climate Policy, MIT Press.
"Assessing Rational Expectations 2: Eductive stability in economics", MIT Press, 2005, 453p.
"Assessing Rational Expectations: Sunspot multiplicity and economic fluctuations", MIT Press, 2001, 319 p.
"A contribution to the pure theory of taxation", Cambridge University Press, 1995, 301 pages
Papers
with
"General equilibrium when Some firms follow special pricing rules",, Econometrica, 53, 6, 1985