Santa Severa is a frazione of the comune of Santa Marinella, in the province of Rome, Lazio, Italy.
It is a small sea resort on the Via Aurelia, c. 8 km (5 mi) south of Santa Marinella and 50 km (31 mi) north of Rome.
It takes its name from the 2nd-century Christian martyr.
The village includes a small medieval town with a 9th-century castle facing the sea, where the ancient Etruscan port of Pyrgi was once located.
This article about a castle in Italy is a stub.