Between 1969 and 1975 the excavations promoted by the Soprintendenza alle Antichità dell'Etruria Meridionale in the area to the east of the church of Santa Maria of Falleri identified a building in opus quadratum, located at the intersection between the main east–west and north–south urban road axes. As part of the Falerii Novi Project, this area has been systematically surveyed and (re)studied, applying an interdisciplinary approach. This has allowed the identification in this area of a monumental republican temple, linked to the forum, which should be placed in the context of the earliest development of the town, which has been known to us up to now only via literary sources. The identification of the republican temple of Falerii Novi contributes to fresh insights into the foundation of the town and its urban development.