The green port concept offers a sustainable approach to port management aimed at reducing environmental damage while maintaining efficient operations. This study examines the transformation of Teluk Lamong Terminal in Indonesia into a green port using a socio-technical regime approach. Employing stakeholder analysis and content analysis, the research identifies key actors involved and assesses their roles and influences in the transformation process. The study concludes that effective collaboration among government agencies, port authorities, and local communities is essential to achieving sustainable port development. The insights provided can guide policymakers and practitioners in enhancing the green port initiatives in Indonesia and similar contexts.