Gaggiano is a comune (municipality) in the Province of Milan in the Italian region Lombardy, located about 13 km southwest of Milan. As of 31 December 2004, it had a population of 8,360 and an area of 26.7 km².
Gaggiano borders the following municipalities: Cusago, Cisliano, Albairate, Trezzano sul Naviglio, Vermezzo, Zibido San Giacomo, Gudo Visconti, Noviglio, Rosate.
Gaggiano is served by Gaggiano railway station.
Italy i/ˈɪtəli/ (Italian: Italia [iˈtaːlja]), officially the Italian Republic (Italian: Repubblica italiana), is a unitary parliamentary republic in Southern Europe. To the north, it borders France, Switzerland, Austria, and Slovenia along the Alps. To the south, it consists of the entirety of the Italian Peninsula, Sicily, Sardinia–the two largest islands in the Mediterranean Sea–and many other smaller islands. The independent states of San Marino and the Vatican City are enclaves within Italy, while Campione d'Italia is an Italian exclave in Switzerland. The territory of Italy covers some 301,338 km2 (116,347 sq mi) and is influenced by a temperate seasonal climate. With 60.8 million inhabitants, it is the fifth most populous country in Europe, and the 23rd most populous in the world.