Background and Purpose: Authentic leadership, the most noteworthy positive leadership style accepted by positive organizational behavior scholars, is famous for its contributions to psychological capitals. And, in fact, this leadership style can flourish and be experienced more easily in situations where there are supportive organizational conditions. Hence, in this study, we assume that organizational support is an important antecedent for experiencing and displaying authentic leadership. Furthermore, in organizations wherein authentic leadership is practiced, people may assume organizational support comes about thanks to their leaders's management style, particularly where authentic leadership may shadow the effect of perceived organizational support on the psychological capitals of individuals. So, in our model we proposed that perceived organizational support will have a positive effect on both authentic leadership style and the psychological capitals of individuals. Moreover, authentic leadership will act as a mediator in this relationship.