Jean Bourgain (28 February 1954 – 22 December 2018) was a Belgian mathematician. He was a professor at University of Illinois, Urbana-Champaign and Institut des Hautes Études Scientifiques at Bures-sur-Yvette in France. From 1994 until his death he has worked at the Institute for Advanced Study in Princeton, New Jersey. He was an editor for the Annals of Mathematics.