Jean Babelon (19 January 1889 – 20 April 1978[1]) was a 20th-century French librarian, historian and numismatist.
A student of the École nationale des chartes, Jean Babelon wrote a thesis entitled La moralité de Bien Advisé et Mal Advisé, précédée d'une étude sur les moralités en général which earned him the degree of archivist paleographer in 1910.
He then joined the Cabinet des médailles of the Bibliothèque nationale de France, then headed by his father.
He made his whole career in this institution and led the department between 1937 and 1961.
[2] Jean Babelon was a member of the Société des Antiquaires de France