Intersectionality has gone global. The application and adoption of the concept cuts across disciplinary and territorial boundaries. How can intersectionality inform the work of social justice in the 21 st century? This essay focuses on the practical implications of intersectionality for social movements. First, this essay reviews prominent definitions of intersectionality, identifies a series of tenets, and presents a brief history of the notion of intersectionality. Second, the essay reviews extant explanations of solidarity. This review ends with a proposal for enacting solidarity that is viable for articulating intersectionally-conscious forms of solidarity—intersectional solidarity—suitable for scholars of global politics.