The African Peace Processes (APP) dataset covers peacemaking efforts in armed conflicts in Africa over the 1989–2019 period. Specifically, the dataset identifies peace negotiations in armed conflicts listed by the Uppsala Conflict Database Program (UCDP), and records information on each negotiation’s outcome, as well as on any third party involved as a mediator. Unlike previous data collections of this kind, the APP dataset includes observations on peace negotiations in both active and inactive conflicts, as well as in inter-state, intra-state, and non-state conflicts. As such, the APP dataset allow scholars to study the effect of mediation across a broader range of African conflict settings than has hitherto been possible.