This book provides a thorough overview of the field of biopolymeric blends and composites, and their applications in various industries. The book is logically organized according to the type of blend or composite. The organization is as follows: Section I natural polymer blends, Section II aliphatic polymer blends; Section III hydrophobic and hydrophilic blends, Section IV multilayer designed materials from renewable resources, Section V composites reinforced with natural fibers, and Section VI nanoclay-reinforced composites. For each topic, the relationship between the structure of the blends/composites and their respective properties is explored, with particular focus on interface, compatability, mechanical, and thermal properties. Real-life applications as well as potential markets are featured throughout.