St Mary's College is a college of Durham University in England. Following the grant of a supplemental charter in 1895 allowing women to receive degrees of the university, St Mary's was founded as the Women's Hostel in 1899, adopting its present name in May 1920.

Durham University is a collegiate public research university in Durham, England, founded by an Act of Parliament in 1832 and incorporated by royal charter in 1837. It was the first recognised university to open in England for more than 600 years, after Oxford and Cambridge, and is thus the third-oldest university in England. As a collegiate university, its main functions are divided between the academic departments of the university and its 17 colleges. In general, the departments perform research and provide teaching to students, while the colleges are responsible for their domestic arrangements and welfare.