In a world of finite resources, expanding populations, and widening structural inequalities, the ownership of things is increasingly contested. Not only are the commons being rapidly enclosed and privatised, but the very idea of what can be owned is expanding, generating conflicts over the ownership of resources, ideas, culture, people, and even parts of people. Understanding processes of ownership and appropriation is not only central to anthropological theorising but also has major practical applications, for policy, legislative development and conflict resolution. Ownership and Appropriation significantly extends anthropology's long-term concern with property by focusing on everyday notions and acts of owning and appropriating. The chapters document the relationship between ownership, subjectivities and personhood; they demonstrate the critical consequences of materiality and immateriality on what is owned; and they examine the social relations of property. By approaching ownership as social communication and negotiation the text points to a more dynamic and processual understanding of property, ownership and appropriation.