This paper proposes an original account, based on the capabilities approach, that explains which kinds of attachment to natural resources are sufficiently morally weighty to give rise to special resource rights. The paper provides a critique of current attachment theories, which fail to provide a clear way to differentiate between what is a preference and what is a legitimate attachment, and thereby justify overreaching resource rights. It then examines Armstrong’s welfarist account of natural resources justice, and argues that the capabilities (...) approach can be used to specify the relevant dimensions of well-being, as elements of human flourishing. A capabilities-based account is appealing because it is more limited in scope than existing attachment theories, and able to make finer distinctions regarding the scope and content of individuals’ rights claims. Attachment claims are legitimate when the valuable basic capabilities held by individuals depend on their relationship to specific natural resources. By using capabilities as a mediating concept, we can detect more precisely when attachment claims are normatively significant and can ground special resource rights. (shrink)