The dissertation presents the work of designers-book publishers, professionals who have knowledge of Design and act in the book publishing market as a publisher. It seeks to highlight the differential that the designer-book publisher brings to the current context of the book publishing market and the field of Design. Faced with the transformations that have occurred in the surroundings of the publishing world, professionals in the production chain of the book and publishers have their functions challenged and new knowledge is required. Skills aimed at the search for innovation, creativity and management of the complexity with which the market is structured are necessary. The work aims to identify which knowledge acquired from DESIGN differentiates the EDITOR in its work in the MARKET as a book publisher. For this, the research establishes the contexts of Brazilian publishing, historical and cultural aspects, delimits the function of the book publisher in the contemporary market and characterizes skills and abilities that enable the designer. The dissertation documents three editorial experiences: André Villas-Boas and 2AB editora; Vitor Barreto and the Novas Ideias and 2AB editora; and Christiano Menezes and DarkSide books. Then, it analyzes the biographies of the three editors, the history of publishing houses, the editorial lines, the catalogs and representative works. Finally, it delimits the influences of the experience in Design on the exercise of the editorial function.