This Handbook provides an essential guide to the study of resources and their role in socio-environmental change. With original contributions from more than 60 authors with expertise in a wide range of resource types and world regions, it offers a toolkit of conceptual and methodological approaches for documenting, analyzing, and reimagining resources and the worlds with which they are entangled. The volume has an introduction and four thematic sections. The introductory chapter outlines key trajectories for thinking critically with and about resources. Chapters in Section I, "(Un)knowing resources," offer distinct epistemological entry points and approaches for studying resources. Chapters in Section II, "(Un)knowing resource systems," examine the components and logics of the capitalist systems through which resources are made, circulated, consumed, and disposed of, while chapters in Section III, "Doing critical resource geography: Methods, advocacy, and teaching," focus on the practices of critical resource scholarship, exploring the opportunities and challenges of carrying out engaged forms of research and pedagogy. Chapters in Section IV, "Resource-making/world-making," use case studies to illustrate how things are made into resources and how these processes of resource-making transform socio-environmental life. This vibrant and diverse critical resource scholarship provides an indispensable reference point for researchers, students, and practitioners interested in understanding how resources matter to the world and to the systems, conflicts, and debates that make and remake it.