This proceedings book comprehensively compiles the proceedings of the South East Asia-Japan Conference on Composite Materials 2024 (SEAJCCM 2024). The focus of this book revolves around a diverse array of subjects on cutting-edge composite materials for a broad range of engineering applications. Several topics covered in this book include material characterisation of various types of composite materials, optimisation/modelling/simulation of material properties, composite reparability/recycling/sustainability, advanced composite manufacturing techniques, and structural design of composite materials. Additionally, this proceedings book also delves into the realm of green composite materials made from renewable natural resources, showing green alternatives to conventional synthetic-based materials. This book will appeal to a broad readership and benefit researchers and industrial professionals working in the development of new composite materials for a wide variety of industrial applications.