The International Society for the Study of Medievalism is an academic organization that exists to promote the interdisciplinary study of the popular and scholarly reception of the Middle Ages in postmedieval times. The Society is based on the work and studies of Leslie J. Workman (1927–2001), who is recognized as formalising the academic study of medievalism in the English-speaking world. Katheen Verduin collaborated with Workman for nearly 20 years (as Verduin notes, as "Associate Editor and wife, not necessarily in that order") to establish the Society and its peer-reviewed journal, Studies in Medievalism (SiM).