The Roman Catholic Diocese of Shanghai (Latin: Dioecesis Sciamhaevensis; Chinese: 天主教上海教区) is an ecclesiastical territory or diocese of the Roman Catholic Church in the Municipality of Shanghai China. It was erected on December 13 1933 as the Apostolic Vicariate of Shanghai by Pope Pius XI and was later elevated to the rank of a diocese on April 11 1946 by Pope Pius XII. The diocese is a suffragan of the Archdiocese of Nanking.
