Sant'Ambrogio della Massima

Sant'Ambrogio della Massima is an ancient Catholic church in rione Sant'Angelo, Rome, Italy. It is home to the General Curia of the Subiaco Cassinese Congregation of the Order of Saint Benedict.

Perhaps dating to the 4th century it is said to have been the house of Saint Ambrose’s sister, Saint Marcellina who first established a monastery on the site. This monastery was home to a great many different communities of women through the centuries until a canonical investigation in the 19th century, when it was disbanded and repurposed as a missionary college later becoming the church of the General Curia of the Cassinese Benedictines.