Jean L. Mawhin is a Belgian mathematician and historian of mathematics.
Mawhin received his PhD in 1969 under Paul Ledoux at the University of Liège, where he had studied since 1962 and received his licentiate in mathematics in 1964. He was assistant professor at Liège from 1964 and maitre de conferences from 1969 to 1973. From 1970 he was assistant professor and from 1974 professor of mathematics at the Université catholique de Louvain. In 2008 he retired.
He was a visiting professor at various US and Canadian universities, at the University of Paris, in Strasbourg, Rome, Turin, Trieste, Brisbane, Graz, Brazil, Florence, Darmstadt, Karlsruhe and Würzburg.
He worked on ordinary differential equations and the topological methods used there and methods of nonlinear functional analysis. As a historian of mathematics, he dealt with Henri Poincaré, among others.
He received the Bolzano Medal of the Czech Academy of Sciences. In 2012, he was awarded the first Juliusz Schauder Prize.
In 1986 he became a corresponding member and in 1992 a full member of the Royal Academy of Science, Letters and Fine Arts of Belgium, of which he was president in 2002, and director of the Class of Sciences.