Scholars have recently recognized the importance of the medieval and renaissance school tradition on classical authors for our understanding of literary theory and reading practices from the late antique period to 1600. Yet much of the primary evidence, necessary to such an investigation lies hidden in the manuscript repositories of Europe and North America. The Incipitarium Ovidianum will serve as a finding guide for scholars interested in the medieval and renaissance tradition of accessus, biographies, commentaries and Summae memoriales on the poetic corpus of Ovid. The Incipitarium lists alphabetically by their opening words all of the extant texts related to the study of Ovid from 400 to 1600. All known manuscript witnesses to the text as well as the early incunabula, modern printed editions and studies are provided. An appendix lists manuscripts which transmit glosses to the individual works. And a comprehensive bibliography of modern studies related to the study of Ovid in the Middle Ages is included in the introduction to the Incipitarium itself. The Incipitarium surveys 483 texts in manuscript and/or printed form and will be an essential research tool for all scholars working in the field of the classical tradition.