Jean-Marie Messier (born 13 December 1956) is a French businessman who was Chairman and Chief Executive of the multinational media conglomerate Vivendi (formerly Vivendi Universal) until 2002. He is also frequently referred to by the nickname "J2M", based on his initials or J6M (Jean-Marie Messier Moi-Meme-Maitre-du-Monde) which translates to mean Jean-Marie Messier: myself master of the world.