Sobrio is a former municipality in the district of Leventina in the canton of Ticino in Switzerland . On 10 April 2016 it merged into the municipality of Faido .

Sobrio had an area, as of 1997, of 6.37 square kilometers (2.46 sq mi). Of this area, 0.62 km2 (0.24 sq mi) or 9.7% is used for agricultural purposes, while 4.47 km2 (1.73 sq mi) or 70.2% is forested. Of the rest of the land, 0.2 km2 (0.077 sq mi) or 3.1% is settled (buildings or roads) and 0.69 km2 (0.27 sq mi) or 10.8% is unproductive land.

Of the built up area, housing and buildings made up 2.7% and transportation infrastructure made up 0.5%.