Boundaries are administrative and regional dividing lines or separations between one region and another. Boundary becomes a problem when two people from different regions claim that the boundary belongs to one party. This study aims to determine conflict resolution in resolving border conflicts between Gampong Seuneubok and Gampong Teupin Gajah. The theory used is Ralf Dahrendorf's theory of conflict resolution through arbitration and mediation. The research method used is qualitative with a case study approach. The results of the study found that the boundary conflict that occurred between Gampong Seuneubok and Gampong Teupin Gajah occurred because there was no solid basis regarding the boundary symbol between the two villages. The dispute grew even greater when the people of Seuneubok Village destroyed various facilities in the border area such as the gate, flower vases and the removal of the Asma'ul Husna pole belonging to Teupin Gajah Village. The conflict not only affected the facilities but also strained relations between the two villages. Conflict resolution is carried out through arbitration and mediation. The first arbitration was conducted in 2011 with the local government as the arbitrator. This arbitration failed because the decision was considered a win-lose judgment or won by only one party, which made the Gampong Seuneubok party not want to sign the arbitration decision. Then mediation was also carried out in 2019 by the Camat as a mediator. However, the mediation that was carried out also failed because the offers of the two gampongs were still being debated and had not yet found a solution. Finally, the two villages decided to bring this problem back to the South Aceh Regional Government.
Keywords: Arbitration, Conflict, Mediation, Resolution