Mount St. Mary's and other forms of the name may refer to:
Higher education Mount Saint Mary College Mount Saint Mary College (New York), a private college in Newburgh, New York Mount Saint Mary College (New Hampshire), a defunct private college for women, in Hooksett, New Hampshire (closed 1978) Mount St Mary Campus of the Australian Catholic University, Sydney, Australia
Mount St. Mary's University Mount St. Mary's University (Maryland), a private liberal arts university in Emmitsburg, Maryland Mount Saint Mary's University (Los Angeles), a private liberal arts college, primarily for women, in Los Angeles
Secondary education
Mount Saint Mary Academy Mount Saint Mary Academy (Kenmore, New York) Mount St. Mary Academy (Little Rock, Arkansas) Mount St. Mary Academy (Watchung, New Jersey) Mount Saint Mary's Convent and Academy, Grass Valley, California
Mount St. Mary's School Mount St Mary's School (New Delhi), the same school as above Mount St. Mary High School (Oklahoma), a private high school in Oklahoma City, United States Mount St Mary's Catholic High School, Leeds, United Kingdom
Mount St Mary's College Mount St Mary's College (England) Mount Saint Mary's College Namagunga, an all-girl boarding school near Lugazi, Uganda
Seminaries Mount St. Mary's Seminary of the West, a seminary and a division of the Athenaeum of Ohio, in Cincinnati Mount St. Mary's Seminary and College, now part of Mount St. Mary's University, in Emmitsburg, Maryland
Other uses Mount Saint Mary's Hospital in Lewiston, New York, United States St Mary's Church, Walsall, also known as St Mary's the Mount Church, West Midlands, United Kingdom Mount St Mary's Church, Leeds, West Yorkshire, United Kingdom St. Mary's Mount, an alternate name for the eastern spires of Mission Ridge (British Columbia), Canada