Alvaneu is a former municipality in the district of Albula in the canton of Graubünden in Switzerland.
It consists of Alvaneu-Dorf and Alvaneu-Bad. The area is 35.68 km² and the population is 421 people.
On 1 January 2015 the former municipalities of Alvaneu, Alvaschein, Brienz/Brinzauls, Mon, Stierva, Surava and Tiefencastel merged into the new municipality of Albula/Alvra.