This paper aims to investigate the mediating role of relationship conflict and moderating role of organization citizenship behavior and leader-member-exchange quality on the relationship between team value diversity and team performance. Data was collected from 263 employees of the telecom sector addressing the variables of value diversity, team performance, relationship conflict, OCB and LMX. Regression analysis found that team value diversity negatively affects team performance, and relationship conflict significantly mediates this relationship. It was also found that OCB and LMX significantly moderate the relationship, such that in the presence of these two, value diversity doesn’t affect team performance rather team performance is positive when these two are present. The findings of this research confirm that for effective management of team diversity in organizations, team leaders must also wisely manage relationship conflict.