Benoit Perthame (born 23 June 1959 in France) is a French mathematician, who deals with non-linear partial differential equations and their applications in biology.

He is a professor at Pierre-et-Marie Curie University and at the Laboratoire Jacques-Louis Lions, which he directs.

Since 1989, he has been the scientific advisor to this organization and since 1998 has headed the BANG Group (Numerical Analysis of Non-linear Models for Biology and Geophysics).

He was a guest speaker at the International Congress of Mathematicians in 1994 in Zurich with a conference lecture entitled Kinetic Equations and Hyperbolic Systems of Conservation Laws[6] and was selected to give a plenary lecture at the ICM 2014 in Seoul (Some aspects of mathematical tumor growth and therapy).

[7] In 2013, he received the Blaise-Pascal medal (de) and in 2015 the Inria Prize from the Academy of Sciences.