This Bulletin examines the fascinating stories behind the only known sets of unicorn tapestries in the world—one at The Met Cloisters and another at the Musée de Cluny, Paris. The thirteen tapestries that compose the two sets—six at the Cluny and seven at The Met—remain shrouded in mystery, with their origins and original owners still unknown. Considering the iconography of these two collections together and drawing from primary sources, this Bulletin aims to reach a better understanding of these masterworks and their mythical subject that has captured the public imagination for centuries.