Purpose: The general objective of the study was to examine the effect of diplomacy practices on the conflict resolution in Rwanda. This study has the following specific objectives: To assess the effect of the public diplomacy on conflict resolution through MINAFFET. To establish the effect of economic diplomacy on conflict resolution through MINAFFET. To find out the effect of cultural diplomacy on conflict resolution through MINAFFET. This study assisted decision-makers, policy-makers, and government officials in enhancing their strategies for conflict resolution by providing insights into the effectiveness of public, economic, and cultural diplomacy through the MINAFFET. Methodology: The study used a descriptive research design, A total of 121 MINAFFET employees were the target population. All members of the target population were included in the sample size for this survey, which follows the census approach. The researcher collected data using questionnaire. Statistical methods such as correlation and regression analysis, in addition to descriptive statistics such as means and standard deviations, were used by the researcher when dealing with quantitative data. For qualitative data, content analysis was used. Findings: The model demonstrates a multiple correlation coefficient (R) of 0.873, signifying a robust positive correlation among public diplomacy, economic diplomacy, and cultural diplomacy with the dependent variable, conflict resolution via the Ministry of Foreign Affairs and International Cooperation in Rwanda. Unique Contribution to Theory, Practice and Policy: It is advised that the Ministry of Foreign Affairs and International Cooperation in Rwanda focus the enhancement of its diplomatic strategy via public, economic, and cultural avenues. This entails cultivating more vigorous public diplomacy efforts, advocating for economic interdependence as a mechanism for peace, and augmenting cultural contacts to enhance mutual understanding and collaboration among opposing factions.