Abstract: Modern organizations face problems in terms of complexity and uncertainty due to rapid environmental changes that result from the growth of a knowledge-based society. Accordingly, organizations concerned with their outcomes through organizational learning focus on knowledge sharing as a means of strategic human resource development (HRD). Organizational research has revealed that a supportive learning environment in which people can feel safe to take risks, make mistakes, and learn is essential for organizational learning and adaptability. While psychological safety, the principal building block of a learning organization, has been identified as one of the critical determinants of knowledge sharing, no attempt has been made to consolidate the empirical research findings in the form of a review. Thus, this integrative review is conducted to synthesize the extant empirical literature that connects psychological safety to knowledge sharing and to suggest future research directions in the field of HRD. This study identifies and synthesizes twenty-eight articles that empirically investigated the roles and impacts of psychological safety and knowledge sharing in the context of organizations. The findings provide the integrative conceptual framework by showing various antecedents, mediators, moderators, and outcome variables. This study suggests insightful directions to address underdeveloped research areas for further research.