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The present article, first, examines the relationship between EFL university students' critical thinking (CT) and emotional intelligence (EI). Second, the roles of gender and age as moderating factors in the relationship between students' CT and EI are investigated. Third, the relationships between students' age and gender with their EI are studied. To attain the goals of the research, 86 EFL students completed the "Watson-Glaser Critical Thinking Appraisal" (Form A) and the "Bar-On's EQ-i test". The findings of the study indicated that there was a significant relationship between EFL learners' CT and their EI. Among the components of EI, flexibility and social responsibility were found to have the highest correlations with CT and were also shown to be positive predictors of CT. The results also revealed that age and gender did not moderate the relationship between CT and EI. Furthermore, it was found that neither age nor gender played any significant roles in learners' level of EQ.