This book presents a guide to polymer nanocomposites for 3D, 4D, and 5D printing, filling the gap between studies and research in the real world, and facilitating its use by engineers, technicians, and designers in their own products and projects. It introduces the reader to cutting-edge 3D, 4D, and 5D printing techniques, as well as the newest innovations in polymer-based printing materials, so that they may reap the benefits of this revolutionary technology. The book covers the fundamentals, methods, materials, and printability concerns involved in preparing polymer composites for 3D, 4D, and 5D printing. Subsequently, the most important applications are described in detail, including electrical, electronic, and biological uses, each of which has its own unique set of design, manufacturing, and processing requirements.