This article traces the planning history of two central marketplaces in sub-Saharan Africa, in Dakar and Kinshasa, from their French and Belgian colonial origins until the post-colonial period. In the (post-)colonial city, the marketplace has always been at the centre of contemporary debates on urban identity and spatial production. Using a rich variety of sources, this article makes a contribution to a neglected area of scholarship, as comparative studies on planning histories in sub-Saharan African cities are still rare. It also touches upon some key issues such as the multiple and often intricate processes of urban agency between local and foreign actors, sanitation and segregation, the different (post-)colonial planning cultures and their limits and the role of indigenous/intermediary groups in spatial contestation and reappropriation.