The Roman Catholic Metropolitan Archdiocese of Cape Town (Latin: Archidioecesis Civitatis Capitis) is an ecclesiastical territory or diocese of the Roman Catholic Church in South Africa. It was erected as the Apostolic Vicariate of Cape of Good Hope on June 18, 1818 by Pope Pius VII, and renamed as the Apostolic Vicariate of Cape of Good Hope, Western District on July 30, 1847 and as the Apostolic Vicariate of Cape Town on June 13, 1939. Pope Pius XII elevated it to the rank of a metropolitan archdiocese on January 11, 1951, with the suffragan sees of Aliwal, De Aar, Oudtshoorn, Port Elizabeth, and Queenstown.
The archdiocese's motherchurch and thus seat of its archbishop is the Cathedral of St. Mary of the Flight into Egypt. The current Archbishop-elect of Cape Town is His Grace The Most Rev. Dr. Stephen Brislin, having been appointed by Pope Benedict XVI on Friday, December 18, 2009. He succeeds Archbishop Emeritus Lawrence Patrick Henry.