This book gathers the proceedings of the 9th International Conference and Exhibition on Sustainable Energy and Advanced Materials (ICE-SEAM 2023), held on 14 September 2023, in Putrajaya, Malaysia. It focuses on a diverse range of subtopics: Additive ManufacturingAdvanced Materials and ProcessesDesign and OptimizationEnergy Efficiency, Energy Engineering and ManagementModelling and SimulationSurface Engineering and TribologyThermal and FluidsVibration and Control. The content caters to academicians, researchers, students, practitioners working in the field of sustainable energy systems and advanced materials.