The Diocesan College is a private, English medium, boarding and day high school for boys situated in the suburb of Rondebosch in Cape Town in the Western Cape province of South Africa. The school was established on 2 October 1849 by the Anglican Bishop of Cape Town.

The Diocese of Cape Town is a diocese of the Anglican Church of Southern Africa (ACSA) which presently covers central Cape Town, some of its suburbs and the island of Tristan da Cunha, though in the past it has covered a much larger territory. The Ordinary of the diocese is Archbishop of Cape Town and ex officio Primate and Metropolitan of the ACSA. His seat is St. George's Cathedral in Cape Town.