The Society of Mary (Marianists) is an international Catholic religious order of priests and brothers, with almost 500 serving in the Province of the United States. Members of the Province also serve in Eastern Africa, India, Ireland, Mexico, Nepal and the Philippines. In the United States, the Marianists sponsor three universities (University of Dayton in Dayton, Ohio; St. Mary's University in San Antonio; and Chaminade University of Honolulu) as well as 19 secondary and middle schools, seven parishes and several retreat centers.

Blessed William Joseph Chaminade founded the Marianists in France in 1817. The order has had a presence in the United States since 1849. U.S. Province headquarters are in St. Louis' Central West End.