Abstract Indigenous knowledge is the local knowledge that is unique to a given culture or society. It is the basis for local decision-making in agriculture, medicine, food education, environmental management, craft skills, linguistics and conflict management. The study explored mengehacha, an indigenous system of conflict resolution among the Gumuz people in northwest Ethiopia, which aims to restore peace and harmony within the community when conflicts result from natural resource competition, exchange marriage, clan-based conflict and theft. Data was collected through semi-structured interviews, focus group discussions, non-participatory observation and document analysis, and analysed qualitatively. The indigenous mechanisms of conflict resolution were found to be relatively participatory and supplementary to the state justice system. It is recommended that indigenous systems of conflict management be supported and given equal treatment with the modern court system and that exchange marriage be curbed, since it is becoming a trigger for conflict eruption among the Gumuz.