The focus of this chapter is the concept of intersectionality, primarily in the North American context. By turns a research program, a description of personal identity, a theory of oppression, a counter-hegemonic political agenda, a symbolic antidote to mainstream (liberal) legal theory, and a critique of the methods and practices of mainstream philosophy, the concept of intersectionality (or simply “intersectionality”) wears many hats. The concept is at the center of much contemporary research in the social sciences and humanities, is the fulcrum around which contemporary feminist theory and practice rotates, and is at the same time systematically ignored by mainstream philosophy.