This chapter situates sovereignty at the heart of the relationship between international law and empire. I examine the ways in which the concept was defined to exclude non-European peoples while remaining alert to the complexities posed to such exclusionary definitions by the variety of polities that existed during the heyday of European imperialism. Colonial South Asia, with its melange of political units, provides an excellent illustration of this complicated relationship. I explore the diverse articulations of sovereignty in this region along two axes: temporal and categorical. At least three sets of constituents – British officials, rulers and bureaucrats of semi-sovereign entities such as princely states, and anticolonial nationalists in British India – used the language of sovereignty to debate and resolve political problems. I trace their definitions over time. By examining these actors and their legal arguments, we can understand how sovereignty in colonial South Asia transitioned from notions of layered sovereignty to more territorial forms, although pluralist ideas continue to have long afterlives in postcolonial South Asia.