This chapter contributes to the debate on the professionalization of family firms. It is a positioning paper, whose main aim is to highlight the state of the art of literature and studies about the professionalization of family-owned businesses. A detailed review of most significant theoretical streams is presented in order to outline the features, the drivers and the effect of professionalization of family firms. Based on the literature analysis, some research hypotheses are presented, which have been tested on a sample of Italian enterprises. Finally, the implications and limitations of the study are outlined. The structure of the chapter is as follows. First, the main features of family firms are outlined, which can impact on the profess...