IntroductionCulture and conflict are two entities that interact. 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 how community members think, behave and relate. It is therefore a superstructure that also helps to model systems of conduct to guide the behavior of individuals in the community. Each community has a unique culture that is different from others. Therefore, in the course of interaction, social conflict is very likely to occur between individuals and groups of different cultures. However, conflict can occur 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 people from different communities divided by differences in culture, ethnicity, race, religion and political beliefs. In conflict resolution, peaceful negotiation through third-party mediation is the more likely alternative than any other tool. However, mediating two conflicting groups that are on strikingly 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. The cultural constraint has a significant impact on the process and outcome of mediation. Therefore, an internal mediator with intercultural skills is certainly essential. The key role of the internal mediator in the peaceful negotiation process The internal mediator refers to the individual or group at...... center of the card ......cate in the cultural context of the conflict leads them to be accepted more easily by the parties in conflict.BIBLIOGRAPHY:Jacob Bercovitch. Culture and International Mediation: Exploring Theoretical and Empirical Links in International Negotiation, 2001 Milton J. Bennett, MD A Model of the Development of Intercultural Sensitivity Internal Mediators: Exploring Their Key Role in Informal Peace Processes. Raymond Cohen: cultural aspect of international mediation Douglas Stone, Bruce Patton, Sheila Heen: difficult conversation; How to discuss what matters most. Franklin Quijano: The role of informal mediators in the Mindanao peace process. Oliver Wholleh, Insider Mediators; Retreat on informal processes, learning from the experiences of internal mediators. October 2008.Padma Ratna Tuladhar, the role of internal mediators in peace processes in Nepal.