San Felice Circeo is a town and comune in the province of Latina, in the Lazio region of central Italy.

It is one of I Borghi più belli d'Italia ("The most beautiful villages of Italy").

In the treaty signed between Carthage and Rome in 509 BC, the Carthaginians agreed not to harm Circeii.

[5] In 209 BC, during the Second Punic War, Circeii was one of twelve Latin colonies to refuse any more military contributions towards Rome[6] and in 204 it was severely punished as a result,[7] by furnishing double the greatest number of foot soldiers they had ever provided and 120 horsemen, all chosen from the wealthiest of the inhabitants, and to be sent out of Italy.

The Roman Triumvir Lepidus was exiled here after his fall in 36 BC by his former colleague, and future Emperor, Octavian.