This book presents the proceedings of the 3rd EAI International Conference on Renewable Energy and Sustainable Manufacturing, which took place from November 1-2, 2025 in Ho Chi Minh City, Vietnam. The conference covers up-to-date research in fields such renewable energy, sustainable supply chain and logistics, smart manufacturing and sustainability, or biomaterials and health processing. The proceedings highlights real-world case studies and cutting-edge research to provide insights into successful implementations of renewable energy technologies, including discussions on the economic benefits, environmental advantages, and operational efficiencies that can be achieved through the adoption of sustainable manufacturing practices. The book offers readers knowledge and tools for readers to make informed decisions and implement renewable energy solutions in their own manufacturing operations.