Immunomodulatory Biomaterials and Nano-immunotherapies reviews the general cellular and biochemical barriers of the tumor microenvironment and other immune diseases, the ways they are addressed by modern immunotherapies, and the specific barriers facing particular immunotherapeutic approaches. The latest research on immunomodulatory biomaterials is examined, providing a perspective on their future opportunities in modulating disease treatment strategies. Translational considerations and lessons learned from the various components of nanotechnology-enabled immunotherapies, including conventional immunotherapies,　nucleic acids, nanotechnology, and biotechnology-based therapeutics are assessed. Finally, a framework for the development of the next generation of nanotechnology-enabled immunotherapies is detailed, providing guidance and suggestions for those interested in the development of novel immunomodulatory nanobiomaterials. Immunomodulatory Biomaterials and Nano-immunotherapies is a key reference for researchers and developers working in biomaterials, nanotechnology, immunology, biomedical engineering and pharmaceutical sciences.