Purpose: The aim of this study was to examine the mediating effect of empowerment in the relationship of nurse managers’ authenticleadership, with nurses’ organizational commitment and job satisfaction. Methods: The participants in this study were 273 registerednurses working in five University hospitals located in Seoul and Gyeonggi Province. The measurements included the AuthenticLeadership Questionnaire, Condition of Work Effectiveness Questionnaire-II, Organizational Commitment Questionnaire and Korea-Minnesota Satisfaction Questionnaire. Data were analyzed using t-test, ANOVA, Scheffé test, Pearson correlation coefficients, simpleand multiple regression techniques with the SPSS 18.0 program. Mediation analysis was performed according to the Baron andKenny method and Sobel test. Results: There were significant correlations among authentic leadership, empowerment, organizationalcommitment and job satisfaction. Empowerment showed perfect mediating effects in the relationship between authentic leadershipand organizational commitment. It had partial mediating effects in the relationship between authentic leadership and job satisfaction. Conclusion: In this study, nurse managers’ authentic leadership had significant influences on nurses organizational commitmentand job satisfaction via empowerment. Therefore, to enhance nurses’ organizational commitment and job satisfaction, it isnecessary to build effective strategies to enhance nurse manager’s authentic leadership and to develop empowering education programsfor nurses.