Valle Seriana

Serio
Map of the Serio river
Country	Italy
Basin features
Main source	Monte Torena, Italy 2,583 m (8,474 ft)
River mouth	Adda in Bocca di Serio, south of Crema
Physical characteristics
Length	124 km (77 mi)

The Serio (Lombard: Sère) is an Italian river that flows entirely within Lombardy, crossing the provinces of Bergamo and Cremona. It is 124 kilometres (77 mi) long and flows into the Adda at Bocca di Serio south of Crema.

Its valley is known as the Val Seriana.

Coordinates: 45°16′N 9°45′E / 45.267°N 9.750°E / 45.267; 9.750