This article examines the role of grassroots actors in regions of violent conflict where competing governance systems exists. Specifically, it focuses on those living in the borderlands of South America, where alternative forms of governance may be created in response to violence between state and criminal organizations. In this context, how can grassroots actors overcome protracted armed violence and establish new, legitimate forms of social governance? To explore this question, our methodology employs data triangulation, combining literature, news reports, and fieldwork data collected in two violence‐prone territories: the borderlands of Cúcuta (Colombia)/Táchira state (Venezuela) and Pedro Juan Caballero (Paraguay)/Ponta Porã (Brazil). We argue that grassroots actors can develop innovative and alternative governance structures that differ from those of the state and criminal groups. This research also contributes to the ongoing discussion about the agency of local actors in violent conflicts between nonstate actors and the state. The findings demonstrate that grassroots actors in violent border regions can actively transform conflicts and build peace, particularly in areas such as migration, security, health, and education.