IntroductionCulture and conflict are two interacting entities. Culture, as defined by Olivier Faure and Gunnar Sjostedt#, is a set of meanings, values ​​and beliefs that characterize a particular community and serve as formative factors on the thinking, behavior and relationships of members of the community. community. It is therefore a supra-structure which also contributes to shaping a system of conduct to guide the behavior of individuals in the community. Each community has a unique culture different from others. Thus, during interaction, social conflicts are very likely to arise between individuals and groups of different cultures. However, conflicts can arise between individuals and groups within the community. Conflict is inherent in human life due to the difference in values ​​and interests. Resolving conflicts between individuals and groups within a community is probably not as difficult as resolving conflicts between those of diverse communities divided by difference in culture, ethnicity, race, religion and political beliefs . To resolve conflicts, peaceful negotiations through third party mediation is the most likely alternative rather than any other instrument. However, mediation between two conflicting groups that follow remarkably different trajectories is ultimately difficult. The mediator must understand the complexity and context underlying the conflict as well as the cultural barriers that hinder mediation and communication efforts. Cultural constraint has a significant impact on the process and outcome of mediation. Therefore, an internal mediator with intercultural skills is absolutely essential. The key role of the internal mediator in the peaceful negotiation process The internal mediator refers to an individual or a group... leads them to be more easily accepted by the parties in conflict.BIBLIOGRAPHY:Jacob Bercovitch. Culture and international mediation: exploring theoretical and empirical links in international negotiation, 2001Milton J. Bennett, MD A developmental model of intercultural sensitivityInternal mediators: exploring their key role in informal peace processes.Raymond Cohen: Cultural aspect of mediation internationalDouglas Stone, Bruce Patton, Sheila Heen: Difficult conversation; How to discuss what matters most.Franklin Quijano: The role of informal mediators in the peace process in Mindanao.Oliver Wholleh, internal mediators; Retreat on informal processes, lessons learned from the experiences of internal mediators. October 2008. Padma Ratna Tuladhar, The role of internal mediators in the peace processes in Nepal.