The designer, in his professional practice, finds it difficult to design the conceptual field of activity. This circumstance indicates a lack of identity, even when compared to other professions that have stronger conceptual pillars, for example, engineers, architects, doctors, physicists, chemists, lawyers and journalists. From the research of the especific nature of Design and from the ideological questions that shaped the profession over time, we could understand the difficulty of defining the boundaries. Considering this fact, this thesis delves into an epistemological debate, through the analysis of Brazilian design blogs, questionnaires and interviews with designers, that reflects on how the professional designer is perceived, described and classified by the society and the market, considering specially the theoretical framework involved on Design as a field of knowledge.