Team emotional intelligence is expected to have a significant impact on intrateam conflict and team effectiveness. However, to date, there has been a dearth of empirical evidence of this link. Taking a comprehensive approach, our study contributes to the literature on intrateam conflict and team emotional intelligence. Data collected from 79 teams in South Korean companies reveal that team emotional intelligence is negatively related to team process (i.e., task conflict and relationship conflict) and positively related to team effectiveness (i.e., team performance, innovation, and cohesion). In addition, team emotional intelligence has a moderating effect on decoupling task conflict and relationship conflict. Our findings also indicate that team emotional intelligence decreases the negative effects of task conflict on team effectiveness, and of relationship conflict on team cohesion. We conclude this study with a discussion of limitations and implications for future research.