Biopolymers have garnered global interest due to environmental concerns and are widely utilized in applications such as biomedicine, food, textiles, and cosmetics. Techniques like 3D printing have been extensively studied to fabricate reliable and efficient products, particularly in tissue engineering. These techniques enable the production of materials with complex structures and diverse functional groups. The book provides a comprehensive account of contemporary advancements in 3D-printed biopolymers, emphasizing their role in promoting sustainability and supporting the circular economy. Featuring meticulously curated chapters by leading scientists, it integrates diverse disciplines, including green biopolymers, nanotechnology, functionalization techniques, and material synthesis, offering a holistic understanding of the field. Several chapters delve into 3D printing processing techniques and their applications in areas such as water purification, energy storage, and biomedical advancements. Additionally, the book addresses progress in biopolymer technology, exploring its challenges and future prospects.