The animateur d'art and his multiples roles. Pluridisciplinary research of these disregarded cultural mediators of the 19th and 20th centuries00This book gathers new studies, which enlighten the role of the animateur d'art in the development of the arts. The animateur d'art actively participates in the defense of the arts and in the stimulation of the artistic creation in a certain period. He is a key figure positioning himself as a mediator between the different art worlds as well as between the different agents of the cultural environment. His work also consists in building bridges between the artists and his own cultural environment in order to ease the reception of the works and to promote art movements. The authors who contributed to this publication offer a first portrait of this cultural actor who influenced the art scenes from the 19th century to the present.