Hugo F. Sonnenschein is a prominent American economist and educational administrator. Currently the Adam Smith Distinguished Service Professor in Economics at the University of Chicago, his specialty is microeconomic theory; with a particular interest in game theory. He served as the 11th president of the University of Chicago (1993-2000), and remains a member of the university's Board of Trustees. Previously, he served as Provost of Princeton University and Dean of the School of Arts and Sciences at the University of Pennsylvania. Sonnenschein attended the University of Rochester for his undergraduate studies, and received his Ph.D. in Economics from Purdue University in 1964. He is known for the Sonnenschein-Mantel-Debreu Theorem.