Alto Malcantone is a municipality in the district of Lugano in the canton of Ticino in Switzerland . It was formed on 13 March 2005 from the earlier municipalities of Arosio, Breno, Fescoggia , Mugena and Vezio.

Arosio is first mentioned in 1335 as Aroxio. Breno is first mentioned in 1140 as Breno. Fescoggia is first mentioned in 1296 as Fescozia. Mugena is first mentioned in 1214 as Megiadina.