Brenno
Brenno (1,900 m)
Location
Country	Switzerland
Physical characteristics
Mouth	Ticino
• location	Biasca
• coordinates	46°21′23″N 8°57′14″E / 46.3565°N 8.9539°E / 46.3565; 8.9539
Length	40 km (25 mi)
Basin features
Progression	Ticino→ Po→ Adriatic Sea

The Brenno is a 40-kilometre (25 mi) long river in canton Ticino in Switzerland. It drains most of the Blenio Valley and it joins the Ticino between Pollegio and Biasca.