What role do cities play in emerging global legal order? Over the past two decades cities have become objects of international and transnational regulation, and they have also begun enforcing international legal norms and standars. While there is a burgeoning body of literature on the globalization of cities, that literature has ignored the legal dimension of this phenomenon. This article fills that gap and show how “local” law impacts on “global” change. Also drawing on examples from across the globe, the autor demostrate that cities are gaining independent status and are functioning as vessels through which world norms reach individuals and communities. An important implication of the analysis is that we should recognize cities singular role as normative mediators between the world and the state.