The University of Tokyo Library is a term used to refer to the University of Tokyo (UTokyo) Library System, which consists of three comprehensive libraries located in each of the university's main campuses, and 27 field-specific libraries affiliated with faculties and institutes within UTokyo. As of March 2024, the UTokyo Library System owns a collection of over 10 million books and numerous materials of historical or scientific values, making it the second largest library in Japan. It is only surpassed by the National Diet Library, which stores approximately 12.11 million books.