Translated from the Portuguese expression arquivo morto, the dead archive is a site where files that have lost their procedural validity are stored for a determined number of years before they are destroyed or are sent to permanent archives. In Mozambique, where awareness and institutional capacity for proper archival procedures are still being developed, a common feature of the dead archive is the way in which files are untidily piled up with old typewriters, furniture, spare parts and other material debris of bureaucratic work and administration. In these archives, more than forty years of institutional and public memory lie ignored in leaky, damp basements across the country and in serious danger of irreparable damage. Drawing from various stints of historical and anthropological field research conducted between 2009 and 2016 in Maputo, Niassa and Inhambane provinces, this article examines the dead archive in order to explore the relationship between institutional memory and governance during the long period of austerity in Mozambique. Based on our investigation of the multiple layers of the dead archive, we argue that the Mozambican post-socialist government has sought to control institutional memory as a way to keep the ruling party in power in the context of multiparty politics. While the public sector has experienced conditions of austerity since independence, we show how, during the socialist period (1975–90) of single-party rule, the state's relationship with institutional memory was more progressive, with transparent and communicative archival practices. In contrast, despite the combination of public sector reforms and progressive legislation regarding the right to information, the multiparty democratic period (1990 to the present) has seen an exacerbation of administrative secrecy leading to less transparent and communicative archival practices.