This study aims to explore the role of organizational citizenship behavior (OCB) in managing unethical pro-organizational behavior (UPB). Drawing on self-perception theory and moral disengagement theory, we hypothesize that OCB predicts UPB through the mediation of moral disengagement. Data were obtained from 262 individuals. Results indicated that OCB had significant effect on UPB. Moreover, it is found that OCB also had an effect on moral disengagement. Strong relationship was found between moral disengagement and UPB. Finally, results indicated that moral disengagement had a mediating effect between OCB and UPB. Theoretical and practical implications of these findings are discussed.