St Mary’s University is a private Catholic university in Calgary, Alberta. A teaching and research university, St. Mary’s is accredited by Alberta Advanced Education as an “Independent Academic Institution” and offers degrees in the liberal arts, sciences and education. The university has 875 full- and part-time students, 80 full- and part-time faculty, and an average class size of 25.

In addition to academic expansion, the St. Mary’s campus has undergone a major change. The land upon which the campus is situated accommodates several buildings, dating from the early 1900s, designated as provincial heritage buildings, including a wooden water tower. As the buildings have heritage status, this legally forbids any alteration of their exterior, with the exception of repair, a prohibition which does not extend to their interior. Thus these buildings have been transformed into new classrooms, a bookstore, common areas and cafeteria. The water tower has been braced to protect it from collapse, and repainted in its original colour, Canadian Pacific Railway red, the only colour legally allowed due to its heritage status. In September 2016, the new Heritage Centre building was officially opened.

In 2011, St. Mary’s initiated a site development planning process to identify guiding principles, development options and concept plans for its 35-acre campus.

St. Mary’s library contains over 30,000 titles and has 51 workstations accessible by students.