South Sudanese women have been grossly under-represented in formal peace negotiations. However, they have been active in informal peacebuilding at the local level where peace means rebuilding society. Such informal peacebuilding is radically different to formal peace negotiations where male warlords and political leaders in new positions of power divide the spoils of war. This brief describes women’s informal peace work in South Sudan, and shows the extensive and valuable, but often unrecognized work that women’s organizations do. We also look at how women’s roles in formal processes are informed by women’s informal work.