The Hilandar Research Library (HRL) has the largest collection of medieval Slavic manuscripts on microform in the world. The HRL's millions of pages of manuscript material on microform from more than 100 different private, museum, and library collections in dozens of countries are utilized by scholars from all over the world. The collection includes several thousand Cyrillic manuscripts on microform, with over 1200 from several monasteries on Mount Athos, Greece, including the entire Slavic manuscript collection of Hilandar Monastery. The Hilandar Research Library also contains a large specialized reference collection, in print and in microform, as well as a growing collection of original manuscripts and artifacts from the medieval Slavic world. Located in the Thompson Library of The Ohio State University, the HRL shares its space with the Resource Center for Medieval Slavic Studies (RCMSS).
The HRL's manuscripts on microform as well as its 10,000-volume reference collection may be viewed in the Jack and Jan Creighton Special Collections Reading Room, 105 Thompson Library.