The Basento (Latin Casuentus) is a river in the Basilicata region of southern Italy.

The river flows northeast near Pignola and Potenza before curving east near Vaglio Basilicata.

It curves southeast and flows near Brindisi Montagna, Trivigno, and Albano di Lucania.

A right tributary coming from Lago di Ponte Fontanelle flows into the river in this area.

The river flows near Grottole, Miglionico, Pomarico, Ferrandina, and Monte Finese before curving eastward.