Villasanta (La Santa) is a comune (municipality) in the Province of Monza and Brianza in the Italian region Lombardy, located about 20 kilometres (12 mi) northeast of Milan.

Villasanta borders the following municipalities: Arcore, Biassono, Monza, Concorezzo.

The comune of Villa San Fiorano existed from the 14th century until 1757.

It is believed that the original core of the town center emerged during the Roman era, serving as a resting place along the road from Milan and Monza to Olginate, at the junction leading to Vimercate.

The existence of the church dedicated to Saint Anastasia is confirmed by a document from AD 768, though its founding is likely much older. According to historian Oleg Zastrow, who conducted a study on the parish's history, the church can be dated to the time of Theodoric the Great (c. 500) or earlier.

Another document confirms the presence, in 961, of the church and attached hospice (in Latin, xenodochium) of Saint Alexander in the area where the homonymous district now stands. The hospice operated for several centuries, likely abandoned c. 1300.

The settlement that developed around the church of Saint Anastasia adopted its name over the centuries, first known as the "Place of the Saint," and later simply "La Santa." The areas corresponding to the districts of Sant'Alessandro and San Fiorano were called Villola or Coliate in medieval documents and later Villa.

In 1578, the church of Saint Anastasia, which until then had been dependent on the Monza Cathedral, was elevated to a parish by Saint Charles Borromeo, Archbishop of Milan. The parish encompassed the entire municipal territory, though it remained administratively divided: La Santa continued to be part of Monza, while Villa became a separate municipality named Villa San Fiorano. In 1791, the municipality of Villa San Fiorano remained under the jurisdiction of the Monza court, part of the XIII "censual district" of the province of Milan.