This book presents the proceedings of the International Conference on Greener Technologies in Mechanical Engineering (ICGTME 2025), organized by the Department of Mechanical Engineering, Birla Institute of Technology and Science (BITS) Pilani, India, as part of the institute’s Diamond Jubilee celebrations. The book captures cutting-edge research and innovative practices that highlight the critical role of mechanical engineering in addressing global sustainability challenges and advancing the United Nations Sustainable Development Goals (SDGs). The book covers topics such as renewable and sustainable energy systems, eco-centric and sustainable design innovations, green materials and manufacturing practices, thermal engineering advancements for energy efficiency, industrial engineering approaches for a green economy, and policy integration and collaborative frameworks for sustainable development. Selected papers also present best practices that demonstrate real-world applications of greener technologies in industry and infrastructure. This book will be valuable to researchers, graduate students, practicing engineers, policymakers, and industry professionals seeking insight into contemporary research trends and practical solutions in sustainable mechanical engineering.