This article does not cite any sources. Please help improve this article by adding citations to reliable sources. Unsourced material may be challenged and removed.Find sources: "Brenno" river – news · newspapers · books · scholar · JSTOR (October 2017) (Learn how and when to remove this message)
Brenno
Brenno (1,900 m)
Location
CountrySwitzerland
Physical characteristics
MouthTicino
 • location
Biasca
 • coordinates
46°21′23″N 8°57′14″E / 46.3565°N 8.9539°E / 46.3565; 8.9539
Length40 km (25 mi)
Basin features
ProgressionTicinoPoAdriatic 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.