Hugo Freund Sonnenschein (November 14, 1940 – July 15, 2021)[1][2][3] was a prominent American economist and educational administrator. He was the Adam Smith Distinguished Service Professor in Economics at the University of Chicago. He was known for focusing on the microeconomic theory such as general equilibrium theory. He was the 11th president of the University of Chicago from 1993 until 2000.[4][5]