It will be headed by Richard Attias, currently the head of Publicis Events Worldwide. He will have a "significant minority interest" in the operation, which will specialise in high-profile conferences and events, particularly in Europe and the Middle East.
Key clients will include the World Economic Forum.
Maurice Levy, the Publicis Groupe chairman, described Attias as "one of the most creative and entrepreneurial forces within the Publicis Groupe family".