Rozzano (Lombard: Rozzan [ruˈsãː]) is a comune (municipality) in the Metropolitan City of Milan, in the Italian region Lombardy, located about 9 kilometres (6 mi) south of Milan.

Rozzano borders the following municipalities: Milan, Assago, Zibido San Giacomo, Opera, Pieve Emanuele, Basiglio.

Rozzano received the honorary title of city with a presidential decree on July 21, 2003.

The first government to officialise the birth of the municipality of Rozzano was that of Napoleon who in 1809 decreed the annexation of Torriggio and in 1811 those of Cassino Scanasio, Pontesesto and Quinto de' Stampi.

The Austrians first annulled everything in 1816, but then reconsidered regarding Torriggio and Cassino Scanasio in 1841, while it was Vittorio Emanuele II in 1870 who sanctioned the final union with Pontesesto, which also brought Quinto as a dowry.