Henri Berestycki (born 25 March 1951)[1] is a French mathematician who obtained his PhD from Université Paris VI – Pierre and Marie Curie University in 1975.
His Dissertation was titled Contributions à l'étude des problèmes elliptiques non linéaires, and his doctoral advisor was Haïm Brezis.
Dickson Instructor in Mathematics at the University of Chicago from 1975–77, after which he returned to France to continue his research.
He worked at the French National Center of Scientific Research (CNRS), then moved to an appointment as Professor at University Paris XIII (1983–1985).
He is currently the Directeur d'études (Research Professor) at École des hautes études en sciences sociales (EHESS), since 2001.