Nikolaos G. Chrissis studied History & Archaeology at the National and Kapodistrian University of Athens. He received his M.A. in Late Antique and Byzantine Studies from King’s College London and his PhD from Royal Holloway, University of London.

From 2018 to 2023 he was Assistant Professor of Medieval European History at the Department of History and Ethnology of the Democritus University of Thrace. He has also taught at the universities of London (Royal Holloway), Birmingham, Crete, and the Hellenic Open University. In 2012-2015 he carried out EU-funded postdoctoral research at the Department of History & Archaeology of the University of Athens.

His main research interests and publications revolve around the history of the Crusades, Latin presence in Greek lands, Byzantine-Western relations, papal policy in the Levant (11^th-15^th c.), and generally intercultural contacts and identity formation in the medieval Mediterranean.

He has been elected Secretary of the Society for the Study of the Crusades and the Latin East (SSCLE) and is Associate Editor of the journal Crusades (Routledge).

He is the author of Crusading in Frankish Greece: A Study of Byzantine-Western Relations and Attitudes, 1204-1282 (Turnhout, 2012), as well as co-editor of Contact and Conflict in Frankish Greece and the Aegean, 1204-1453 (Farnham, 2014), Byzantium and the West: Perception and Reality, 11^th-15^th c. (Routledge, 2019), and Crusading against Christians in the Middle Ages (Palgrave Macmillan, forthcoming). He has also been invited to contribute chapters to collective volumes such as: The Brill Companion to Latin Greece, The Cambridge History of the Crusades, The New Oxford Illustrated History of the Crusades, and The Cambridge Companion to Christian Heresy.