We are pleased to introduce you to the collection of articles that were presented at the 15th International Conference on Materials and Manufacturing Technology (ICMMT 2024), which was successfully held in Nha Trang, Vietnam, on March 22-24, 2024. The selected papers provide advances and the latest research results on structural metals, technologies of additive manufacturing and metalworking, nanomaterials and chemical engineering, synthesis and analysis of properties of advanced polymer and composite materials, green building materials, mechatronics and automation.