This chapter explores what it means for adults to claim child rights. Focussing on activism against institutional child abuse, it considers the question of what happens to the mobilisation of child rights discourse when the person claiming those rights is no longer a child. In other words, how is the concept of child rights used retrospectively and what does this reveal, both about childhood and about child rights? The chapter begins with the contention that childhood needs to be understood as not only a concept that speaks to the lives of children, their experiences, and their place within the social structure. Rather, we suggest that a more expansive view enables recognition of the enduring significance of childhood in adults’ lives. We illustrate this argument with examples of the formation of collective identities based on childhood experiences, before turning to the ways that child rights are marshalled by adults in activism, in commissions of inquiry, and in the legal sphere. Throughout the chapter, we