This proceedings book contains papers presented at the International Conference on Eco-friendly Fibers and Polymeric Materials (LSPM23) held on EFPM 2024, 19–20 February, Bangkok, Thailand. The papers in this book are presented by academics and industrial practitioners showcasing the latest technological advancements and applications of environmentally friendly polymeric materials with an emphasis on the production of bio-based fibers and polymers are greatly enlarging its range of applications in different industrial sectors including automobiles, sports, architecture, design, and many others. The content of this book appeals to academia and industrial researchers from the fields of polymer chemistry, physics, and materials science.