Isabella Lazzarini (Mantua, 1964) is an historian of Italian history with a focus on the diplomatic history of Renaissance Italy. She studied at the Scuola Normale Superiore and at the University of Pisa, and teaches Medieval history at the University of Molise.
- The Italian Renaissance State, Andrea Gamberini and Izabella Lazzarini. Cambridge University Press, 2012.
- Communication and Conflict: Italian Diplomacy in the Early Renaissance, 1350–1520. Cambridge University Press, 2015.
- Italian Renaissance Diplomacy: A Sourcebook, eds. Monica Azzolini and Isabella Lazzarini (Pontifical Institute of Mediaeval Studies, 2017).
- A Cultural History of Peace in the Renaissance. Bloomsbury Publishing, 2020.