Socialization is a key mechanism of social reproduction. Yet, like the functionalists who introduced the concept, socialization has fallen out of favor, critiqued for ignoring power and agency, for its teleology and incoherence, and for its link to misguided “culture of poverty” arguments. In this review, we argue for renewed, post-functionalist use of socialization. We review the concept’s history, its high point under Parsons, the reasons for its demise, its continued use in some subfields (e.g., gender, race and ethnicity, education), and alternative concepts used to explain social reproduction. We then suggest that something is lost when “socialization” is avoided or isolated in particular subfields. Without socialization, conceptions of social reproduction face problems of history, transferability, and power. We close by outlining a post-functionalist agenda for socialization research, building off sociological work engaging cognitive science, linguistic anthropology, pragmatism, the re-interrogation of values, and the development of ideology in political socialization.