St. Mary's Hall may refer to:
United Kingdom St. Mary's Hall, Coventry, England Stonyhurst Saint Mary's Hall, preparatory school to Stonyhurst College, Lancashire, England St Mary Hall, Oxford, England St Mary's Hall, Brighton, girls school founded in 1836 and closed in 2009
United States
St. Mary's Hall (Georgetown) at Georgetown University, Washington, D.C. St. Mary's Hall (San Antonio, Texas), a private school located in San Antonio, Texas St. Mary's Hall, University of Dayton, in Dayton, Ohio Doane Academy (formerly St. Mary's Hall - Doane Academy), a private school located in Burlington, New Jersey Shattuck-Saint Mary's, a private school located in Faribault, Minnesota
China St. Mary's Hall, Shanghai, a girls' school in Shanghai related to St. John's University, Shanghai and St. John's University, Taiwan