Fiona Griffiths is a historian of medieval Western Europe, focusing on intellectual and religious life from the ninth to the thirteenth century. Her work explores the possibilities for social experimentation and cultural production inherent in medieval religious reform movements, addressing questions of gender, spirituality, and authority, particularly as they pertain to the experiences and interactions of religious men (priests or monks) with women (nuns and clerical wives). Griffiths is the author of Nuns’ Priests’ Tales: Men and Salvation in Medieval Women's Monastic Life, The Middle Ages Series (The University of Pennsylvania Press: 2018); and The Garden of Delights: Reform and Renaissance for Women in the Twelfth Century, The Middle Ages Series (The University of Pennsylvania Press: 2007); as well as co-editor of Sensory Reflections: Traces of Experience in Medieval Artifacts, (with Kathryn Starkey (De Gruyter: 2018); and Partners in Spirit: Men, Women, and Religious Life in Germany, 1100-1500, (with Julie Hotchin) (Brepols: 2014). Her essays have appeared in Speculum, Church History, the Journal of Medieval History, and Viator. She has held fellowships from the National Endowment for the Humanities; the Alexander von Humboldt Foundation; the Radcliffe Institute for Advanced Study; the Stanford Humanities Center; and the Institute of Historical Research (University of London).

Griffith's research was featured in The Europe Center October 2017 Newsletter.