Jon Elster (/ˈɛlstər/; born 22 February 1940, Oslo) is a Norwegian philosopher and political theorist who holds the Robert K. Merton professorship of Social Science at Columbia University. He received his PhD in social science from the École Normale Superieure in 1972. He has previously taught at the University of Paris, the University of Oslo, and the University of Chicago, where he became professor of political science in 1984. Since 1995, he has held the Robert K. Merton professorship of Social Science at Columbia University, as well as being professor of social science at the Collège de France since 2005. Elster has authored works in the philosophy of social science and rational choice theory. He is also a notable proponent of analytical Marxism, and a critic of neoclassical economics and public choice theory, largely on behavioral and psychological grounds. In 2016, he was awarded the 22nd Johan Skytte Prize in Political Science for his contributions to political science.

Jon Elster, né le 22 février 1940 à Oslo, est un philosophe et sociologue norvégien. Ses travaux portent notamment sur le marxisme analytique et sur la théorie du choix rationnel.