A review of the evidence related to the Mithraic cult in the current Friuli Venezia Giulia region is proposed, encompassing five to six sites in the cities and ancient territories of Aquileia, Tergeste, Iulium Carnicum (whilst concerning the Mithraum of Camporosso, in western Noricum, see S. Bonomi in this volume). Most of them are identified thanks to inscriptions and other finds, but the the precise location and structures of the sanctuaries are poorly or not at all known: an exception is represented by the Mithraeum in Duino - San Giovanni del Timavo, subject of an in-depth analysis and discussion.
