This chapter looks at how older women’s identities are socially constructed and, in particular, how they can be influenced by institutional intervention. Different perceptions of oneself as an older woman involve considerable differences in the definition of each person’s possible spheres of action, and, therefore, in their life perspectives. In particular, in the ethno methodological perspective, identity is understood as an interactional accomplishment, negotiated and achieved by members in the course of ordinary events, as constitutive features of their social encounters. According to ethno methodology, identity production is a constant achievement, as well as a condition, of social interaction. Identity-relevant actions or discourses are subject to scrutiny, verification, support or contradiction by members, that is, they are subject to negotiation in the course of ordinary events. Institutional settings, such as the Senior Citizen Centers and the Equal Opportunity Unit, are organized around identity-relevant membership categories. The chapter also presents an overview of the key concepts discussed in this book.