For other meanings, regarding the surname, see De Sio
Desio is a town and comune in the Province of Monza and Brianza, Italy.
In 1277 it was the location of the battle between the Visconti and della Torre families for the rule of Milan. On 24 February 1924, Desio received the honorary title of city with a royal decree.
It is also known as the birthplace of Pope Pius XI and of Marco Sportiello, Atalanta FC goalkeeper.
- Villa Tittoni (18th century)
- Torre dei Palagi (19th century)
Desio is served by Desio railway station.