The Roman Catholic Diocese of Beihai/Pakhoi (Latin: Pehaeven(sis), Chinese: 北海) is a diocese located in the city of Beihai (Guangxi) in the ecclesiastical province of Guangzhou in China.

• August 1, 1920: Established as Apostolic Vicariate of Western Guangdong and Hainan 粵西海南 from the Apostolic Vicariate of Guangzhou 廣州
• December 3, 1924: Renamed as Apostolic Vicariate of Beihai 北海
• April 11, 1946: Promoted as Diocese of Beihai 北海

• Bishops of Beihai 北海 (Roman rite)
  • Bishop Paul Su Yong-da (2004–present)
  • Bishop Gustave-Joseph Deswazières, M.E.P. (祝福) (April 11, 1946 – February 22, 1959)
• Vicars Apostolic of Beihai 北海 (Roman Rite)
  • Bishop Gustave-Joseph Deswazières, M.E.P. (祝福) (November 27, 1940 – April 11, 1946)
  • Bishop Jean-Baptiste-Michel-Marie-Louis Pénicaud, M.E.P. (贲德馨) (December 16, 1929 – February 1940)
  • Bishop Gustave-Joseph Deswazières, M.E.P. (祝福) (February 15, 1928 – November 1928)
  • Bishop Auguste Gauthier, M.E.P. (俄永垂) (December 3, 1924 – May 12, 1927)
• Vicars Apostolic of Western Guangdong and Hainan 粵西海南 (Roman Rite)
  • Bishop Auguste Gauthier, M.E.P. (俄永垂) (June 1, 1921 – December 3, 1924)

• GCatholic.org
• Catholic Hierarchy

21°28′00″N 109°06′00″E / 21.4667°N 109.1000°E / 21.4667; 109.1000