Prior theories on how crucial knowledge is to leadership have changed over time. Scholarly studies of leadership have recently shifted their attention from early leaders' wisdom like Confucius to their efficacy and efficiency in maximizing revenues and organizational success. Questioning that emphasis is necessary due to the lack of wisdom in leadership in the tourism context. To address this lack, this paper underpins social exchange theory to examine how wise leader behaviors drive travel agencies employees to advocate for and retain them. This paper also examines the mediation mechanisms of employee advocacy in travel agencies category -A within Greater Cairo. Drawing on Google Form, 442 responses were gathered from travel agency employees and analyzed using ADANCO v.2.2. Findings revealed that wisdom leadership positively affected employee advocacy and retention. Besides, employee advocacy increased their retention levels. Further, employee advocacy partially mediated the positive nexus between wisdom leadership and employee retention. Accordingly, this paper provides valuable insights for tourism decision-makers. For example, tourism businesses need to provide managers and supervisors with the right tools to help them acquire compassion, persuasiveness, voluntariness, and self-worth to successfully train wise leaders. Further, tourism leaders need to be aware that employee advocacy entails more than just promoting or defending their organizations to outside parties.