This article analyzes theoretical and legal aspect of definition «legal identity», being a relatively new notion formulated by the science of theory of state and law. It must be noted that a social aspect of identity attains particular importance in modern conditions, when a social differentiation has reached the highest point of complexity. A person cannot be torn away from society, but cannot either be just a «member of society», because being a part of society is inevitably mediated by participation in various social groups. Plurality of social roles results in the fact that sometimes it is hard for an individual to get his/her bearings in social space and determine which of those roles is primary and priority one. Such a necessity arises for no other reason than because different statuses can put forward different demands with regard to behavior and thinking of a person, form various personal qualities. As a consequence, a conflict is coming between different social roles, fraught with not only individual but social crises, too. That’s why attainment of one’s own identity is one of a person’s first priorities, the solution of which lies either in the plane of choice between several options, or in the possibility of synthesis of several statuses (roles) on this or that regular basis.It’s obvious that processes of that kind cannot be indifferent in legal contemplation. Because that is exactly law that is the primary authority which distributes and fixes social statuses. Legal regulation of a person’s social activity inevitably generates this or that attitude on his/her part. Such connection between a person’s legal status, his/her behavior and conscience gives all the grounds to discussion about legal identity existing along with other identities – ethnic, religious, political etc.