The Colleges of Durham University are residential colleges that are the primary source of accommodation and support services for undergraduates and postgraduates at Durham University, as well as providing a focus for social, cultural and sporting life for their members, and offering bursaries and scholarships to students. They also provide funding and/or accommodation for some of the research posts in the University. All students at the University are required to be members of one of the colleges.
Durham University has 17 colleges, of which University College is the oldest, founded in 1832. The newest college is South, founded in 2020. The last single-sex college, St Mary's, became mixed in 2005 with the admittance of male undergraduates. One college, Ustinov, admits only postgraduates.