In recent years, the construct of social identity has assumed an increasing role in scientific research. However, despite this attention, evidenced by the large number of publications, some questions related to the conceptualization of this construct still remain unexplained. Thus, the most pressing question is precisely related to the structure of social identity and the tendency to consider it as one-dimensional rather than a construct composed of different components. Therefore, the research focuses on the multicomponent nature of social identity and the connections of its components, which tend to vary in intensity and fimetion, according to different theoretical approaches.