Mount Saint Mary’s Abbey is a monastic community of some fifty Trappistine nuns in Wrentham, Massachusetts.

The more complete, formal name of the Order is the Cistercians of the Strict Observance, whose founding at Cîteaux, France dates back to 1098.

This community follows the reforms of the Cistercian Order as established by the 17th-century Abbot Armand de Rancé at the Abbey of La Grande Trappe.

This community was founded in 1949 by nuns of an Irish monastery, St. Mary's (Glencairn) Abbey, located in County Waterford.

Following the standard need of self-support, this community developed as their main means of income a line of candy for which they are noted.