El santuario de Júpiter Anxur o templo de Júpiter Anxur es un templo romano que se piensa pudo construirse entre el 100 a. C. y el 70 a. C. en la cima del Monte Sant'Angelo, en la ciudad que en latín era Terracina, y los volscos denominaban Anxur. En la antigüedad fue un santuario importante en el paisaje religioso del Lacio, de donde nos han llegado diversas fuentes literarias. A pesar de esta antigua fama, existen incertidumbres sobre su arquitectura, sus fases exactas de construcción y las deidades que fueron veneradas allí. Por su nombre, estaría dedicado principalmente al dios Anxurus, protector de la ciudad, que se consideraba Júpiter Anxur o Júpiter juvenil, junto a la diosa Feronia o incluso a Venus Obsequens.

The sanctuary of Jupiter Anxur, or the temple of Jupiter Anxur, is a Roman temple that is thought to have been built between 100 BC and 70 BC on top of Mount Sant'Angelo, in the city that was called Terracina in Latin, and which the Volscians called Anxur. In ancient times, it was an important sanctuary in the religious landscape of Latium, which is why various literary sources about it have come down to us. Despite its ancient fame, there are uncertainties about its architecture, its exact phases of construction, and the deities that were worshiped there. From its name, it would have been mainly dedicated to the god Anxurus, protector of the city, who was considered Jupiter Anxur or youthful Jupiter, along with the goddess Feronia or even Venus Obsequens.