Jean Jacod (born 1944) is a French mathematician specializing in stochastic processes and probability theory.

He has been a professor at the Université Pierre et Marie Curie.

[2] He has made fundamental contributions to a wide range of topics in probability theory including stochastic calculus, limit theorems, martingale problems, Malliavin calculus and statistics of stochastic processes.

Jean Jacod graduated from Ecole Polytechnique in 1965 and obtained his Doctorat d'État in Mathematics from the Université Paris-VI.

His advisor was Jacques Neveu.