This study explores the integration of psychological insights into conflict resolution practices in multicultural cities. Through case studies in New York, London, Toronto, and Sydney, the research examines the role of emotional intelligence, cognitive flexibility, and transformative mediation in resolving conflicts. The methodology includes qualitative case study analysis, with data collected through interviews, focus groups, observations, and document analysis. Key findings highlight common themes such as the influence of stress, cultural identity, and facilitated conversations in conflict dynamics. The study underscores the importance of tailored conflict resolution strategies that consider psychological factors and cultural contexts. Implications for future research and practical applications in various settings are discussed, emphasizing the need for continuous adaptation and culturally sensitive approaches in conflict resolution practices.