The Tordino is a river flowing in the province of Teramo, in the Abruzzo region of central Italy.

[2] The source of the Tordino is located between Monte Gorzano and Pelone, in the Monti della Laga subchain of the Apennines.

Tributaries on the left bank of the Tordino include the protective irrigation drain known as the Cavata (including three terraces and their associated cascades near the source of the Tordino), the Rivettino, the Castiglione, the Rivoletto, the Rio Verde, the large ditch known as "The Inferno," the 9-kilometre-long (5.6-mile) Fiumicino stream, and the Vezzola river.

A large portion of the water of the Vezzola (which begins near the town of Rocca Santa Maria, has a length of 19 kilometres (12 miles), and passes through the Torricella Sicura community) is used by the ENEL (Ente Nazionale per l'Energia Elettrica) utility company to produce electricity.

Also located on the side is a stream known as the Fiumicello, this being formed by the watershed from the slopes of Mount Bilanciere.