The territory, space of organization of social life, is a complex and unstable human construction, marked not only by the political and institutional life and tribulations of history, but also by the will of the people. In our context of "late modernity", characterized by subjectivity and autonomy of individual actors, the question arises of what these areas mean today, especially in terms of social identities. This is the point that we consider about the Breton space or rather about two kinds of Breton space: the political space and the linguistic space.