This course provides a comprehensive introduction to Organization Development and Change Management as a core discipline within Business and Management studies. The course plays an integrative role by bridging behavioral perspectives and managerial decision-making, enabling students to understand how organizations diagnose problems, design interventions, and manage planned change in dynamic environments. In terms of practice, the course is closely connected to real-world business and management activities, as Organization Development frameworks are widely applied in areas such as organizational restructuring, leadership development, performance improvement, and cultural change across private, public, and non-profit organizations. The course is closely related to Organizational Behavior, which focuses on understanding individual and group behavior, by extending these insights into systematic, organization-wide change interventions. It also complements Strategic Management by translating strategic intentions into actionable organizational changes, ensuring alignment between strategy, structure, people, and processes. As such, this course serves as a critical link between theory and practice, supporting students in developing analytical, problem-solving, and change management capabilities essential for modern managers.