This book presents the proceedings of the EAI International Conference on Renewable Energy and Sustainable Manufacturing (ICRESM 2023), which took place in Ho Chi Minh City, Vietnam, December 16-17, 2023. The conference serves as a platform for researchers, practitioners, industry experts, policymakers, and stakeholders to share their latest findings, innovations, and best practices in the areas of sustainable practices and technologies that reduce reliance on non-renewable resources and encourage the impacts of smart industry 4.0. The papers address global challenges relating to the sustainable manufacturing, energy security and green technologies, and discuss applications that aid in lowering carbon emissions, preserving the environment, and fostering economic growth by supporting renewable energy and eco-friendly manufacturing. Together, the participants disseminate the latest technological advancements, processes, and strategies that promote renewable energy and sustainable manufacturing.