The team's current stadium is the 82,955 seater San Siro, officially known as Stadio Giuseppe Meazza after the former player who represented both Milan and Internazionale. The name San Siro comes from the district where it's located. The stadium is shared with Inter, the other major football club in Milan. The stadium is well known for its fantastic atmosphere due to the closeness of the stands to the pitch. Another feature of the stadium is the use of flares by the fans which can sometimes cause trouble.

On 19 December 2005, AC Milan vice-president and executive director Adriano Galliani announced that the team is seriously working to move out from San Siro. He said that Milan's new stadium will be largely based on the Veltins-Arena and following the standards of football stadia in the United States, Germany and Spain. It will likely be a stadium for football purposes only (with no athletics track). The new stadium is supposed to be named after a sponsor. It remains to see if this plan will proceed or if this is just a ploy to force the owners (Comune di Milano) to sell the stadium to Milan for a nominal fee so as to proceed with extensive renovations. Rumours have also surfaced of Inter's intention to also build a new stadium which may also affect this decision.

Milan's training ground, Milanello, is located just outside the city of Milan, in the village of Varese (approx. 50 kilometres). It was built over two years from 1961 to 1963, and has been serving as a top-modern training lab ever since.

Silvio Berlusconi took over AC Milan in 1986, and that saw him reorganise and renew Milanello to meet the standards of professionel football in the 80's. Milanello, however, never stopped evolving, and to this day it is considered amongst the most hi-tech and efficient training grounds throughout the soccer world. Speculations are, that the wonders of the Milan Lab, make it possible for Milan's players to go on and on for ages, with the likes of ageing players like Maldini, Costacurta and Cafu still going strong within the squad.

The facility holds 46 rooms with space for 56 beds; President Silvio Berlusconi even has his own quarters. 14 permanent staff members are employed