Abstract: By referring to oxford dictionary, it can be found that the word identity is rooted in Latin identitas (meaning similarity) and implies two main meanings. Its first meaning indicates absolute similarity. Its second meaning means distinctiveness. Considering rapid and wide spread changes in the global world, raising question and discussions about identity and its different dimensions, the identity future of societies in its different dimensions and their problems is one of the necessary needs. Therefore, in this study, we studied identity and particularly sociological approaches of identity. In this regard, we mentioned views of some sociologists about identity and studied attitudes of social identity.