The global city is a contested site of economic innovation and cultural production, as well as profound inequalities of wealth and life chances. These cities, and large cities that aspire to ‘global’ status, are often the point of entry for new immigrants. Yet for political theorists (and indeed many scholars of global institutions), these critical sites of global influence and inequality have not been a significant focus of attention. This is curious. Theorists have wrestled with the nature and demands of global justice, but have for the most part supposed that the debate is between statist and cosmopolitan formulations. Questions of redistribution, immigration, humanitarian obligations, coercion at borders, and territorial rights have correspondingly been cast as either the domain of sovereign territorial states, or of the nascent web of supranational institutions that might bind those states and peoples, morally and legally. Examining some of these issues and arguments through the lens of the global city casts them in a new and informative light, and buttresses an associative turn in thinking about global justice.