The Volturno (ancient Latin name Volturnus, from volvere, to roll) is a river in south-central Italy.
It rises in the Abruzzese central Apennines of Samnium near Castel San Vincenzo (province of Isernia, Molise) and flows southeast as far as its junction with the Calore Irpino near Caiazzo and runs south as far as Venafro, and then turns southwest, past Capua, to enter the Tyrrhenian Sea in Castel Volturno, northwest of Naples. The river is 175 kilometres long.
After a course of some 120 kilometres it receives, about 8 kilometres east of Caiazzo, the Calore River. The united stream now flows west-southwest past Capua, where the Via Appia and Latina joined just to the north of the bridge over it, and so through the Campanian plain, with many windings, into the sea. The direct length of the lower course is about 50 kilometres, so that the whole is slightly longer than that of the Liri-Garigliano, and its basin far larger.
Its main tributaries are San Bartolomeo, Lete, Torano, Rivo Tella, Titerno, Calore Irpino and Isclero.
