Abstract This article offers a longitudinal study of the complex entanglements between infrastructure and sovereignty in the Horn of Africa. By analysing Ethiopia’s imperial transport corridors, the political economy of Djibouti’s Red Sea ports, and the Greater Nile Oil Pipeline between South Sudan, Khartoum, and global markets, we underline the co-production of infrastructure and sovereignty as a defining feature of regional politics in the last 150 years. In a region notorious for the redrawing of…