The iCOMERA conference series is a global event focused on advanced research in mechanical engineering that has provided a glimpse into the future by bringing together some of the world's brightest minds. The iCOMERA 2023 was organised and hosted by the Department of Mechanical Engineering of Brawijaya University, Indonesia, Malang, on October 19-21, 2023. The results of research and innovative engineering and industrial solutions were presented at this event. Metal, Alloy, Casting, Casting Defects, Friction Welding, Coating, Direct Current Sputtering, Hardness, Corrosion, Corrosion Inhibitor, Polymer, Composite, Reinforcement, Nickel Ferrite, Carbon Electrode, Bioadsorbent, Activated Carbon, Esterification, Hydrogen Evolution Reaction, Applied Mechanics, Machine Design, Turbine, Mechanical Properties, Fracture Mechanics Materials Science, Mechanical Engineering, Mechanics.