Biopolymer composites are those composites, which have one biodegradable and bio-based constituent. These include natural fibers which are combined with natural or synthetic biopolymers. Natural fibers are biodegradable, renewable and carbon neutral resources. This versatility makes them a potential alternative of synthetic fibers in the biopolymer composite industry. Natural fibers are categorized into animal and plant fibers. The performance of biopolymer composites improves through chemical alteration, which is based on the processing needs, type and environmental circumstances. Some common processing methods utilized for biopolymer composite preparations include extrusion, compression molding and injection molding. The composites which are formed through synergistic combination of organic and inorganic components at the molecular or nanometer level are known as hybrid materials. These are distinguished from standard composites since their constituents differ at the macroscopic level. This book provides comprehensive insights with respect to biopolymer composites. It will prove to be immensely beneficial to students and researchers in this field.