Introduction and aims: Mass effectiveness of players and high cultural intelligence of the coaches have an important role in the success of a team. The aim of this study was to investigate the relationship between cultural intelligence and competence of trainers in men's national team members of football, volleyball, basketball, and handball. Materials and methods: The research was based on the application and the recommended method of data collection was descriptor-correlation. The statistic population of this study includes the coaches and players of the national teams in four fields of futsal, volleyball, basketball and handball, with the total number of 35 for futsal, 31 for basketball, 31 for handball, 30 volleyball players and 36 coaches were chosen as sample group. Questionnaires for cultural intelligence and mass effectiveness were used to measure the variables. In this study, the Kolmogrov- Smirnov test was used to prove the normality assumption of data, and Pearson-Spearman correlation coefficient test and analysis of variance was used to test the research hypotheses. Results: In the variable of mass efficacy, the highest score was in handball sport players (387.38) and the lowest score was for basketball (351.48). In cultural Intelligence, the highest score was for the national basketball team coaches (83.10) and the lowest score was for the sport of futsal (75.62). At the cognitive and meta-cognitive components the basketball coaches, in motivational factors and behavioral components the handball coaches and in behavioral components the volleyball coaches gained the highest score. Between the cultural intelligence of coaches and mass efficiency of players (p<=0.042), and meta-cognition intelligence of trainers with mass efficacy of national team players there is a statistically significant relationship (p<=0.05). Conclusions: According to the study's findings it can be cautiously concluded that to gain more impact of coaches on the performance of players, in addition to considering other effective factors on the mass efficiency of players, consolidation and improvement of the cultural intelligence of the instructors must be taken into consideration and necessary trainings in this field should be given.