Sant'Ambrogio di Torino is a comune (municipality) in the Metropolitan City of Turin in the Italian region Piedmont, located about 25 km west of Turin in the Susa Valley.

The Sacra di San Michele, sometimes known as Saint Michael's Abbey, is a religious complex on Mount Pirchiriano, situated on the south side of the Val di Susa in the territory of the municipality of Sant'Ambrogio di Torino, in the Metropolitan City of Turin, Piedmont region of northwestern Italy. The abbey, which for much of its history was under Benedictine rule, is now entrusted to the Rosminians.