This book presents the proceedings of the international conference “The Middle Ages in the Modern World,” held in Rome November 21-24, 2018. Attended by more than a hundred participants of different ages, educational backgrounds, and places of origin, the conference constituted a landmark in the study of medievalism: the historical discipline, now in full bloom, that investigates the ways in which the thousand-year period between 500 and 1500 was, and continues to be, presented, reconstructed, and imagined in successive eras. The book opens with a substantial bibliography drawn from all of its components, followed by the seven keynote lectures and ninety-three shorter texts - abstracts of the individual conference papers - organized along eight thematic pathways, which together provide a vivid image of the current state of the field.