any manuscript or book formerly preserved in the Bibliotheca Corviniana, the library assembled by Matthias Corvinus (Matthias I), king of Hungary (1458–90). The library occupied two rooms on the east side of Buda Castle and was decorated with specially commissioned frescoes and stained-glass windows.

The collection, comprising mostly manuscript codices and some incunabula (early printed books), evolved from the king's patronage of the arts and his systematic, purposeful method of collecting, in which he was advised by Galeotto Marzio and Taddeo Ugoletto, the eminent Italian humanists who oversaw the library. Modern estimates place the size of the collection at 2,000 to 2,500 volumes, most in Latin or Greek; this excludes the dozens of volumes in the library of the king's wife, Beatrice of Aragon; the nearly 100 volumes of liturgical works housed in the royal chapel; and the hundreds of books of the community of priests of the royal court, mostly on theological subjects.

After King Matthias's death, and especially after the Ottoman Turks' conquest of Buda in 1541, the library was dispersed, and the collection was for the most part destroyed. Some 200 volumes from the Corvina library are held in libraries in 14 countries; about one-fourth of these manuscripts are in collections in Hungary. The surviving codices include ancient classics, copies of the Bible, liturgical guides, works by earlier Christian writers, humanist writings, and books on theology, medieval history, mathematics, astronomy, geography, medical and military studies, architecture, and the law.

Matthias ordered most of the manuscripts from the best Florentine miniaturists of the age, including Francesco del Cherico, Attavante degli Attavanti, Boccardino Vecchio, and the del Fora brothers, Gherardo and Monte. In addition, the codices included the works of masters from Naples, Ferrara, and Milan.