Roman Catholic Diocese of Oslo

Diocese of Oslo Dioecesis Osloënsis
Cathedral
Location
Country	Norway
Metropolitan	Immediately Subject to the Holy See
Statistics
Area	154,560 km² (59,680 sq mi)
Population - Total - Catholics	(as of 2004) 3,449,286 51,305 (1.5%)
Information
Rite	Latin Rite
Cathedral	St. Olav's Cathedral in Oslo (Pro-Cathedral)
Current leadership
Bishop	Bernt Ivar Eidsvig, C.R.S.A.

The Roman Catholic Diocese of Oslo (Latin: Osloënsis) is an exempt diocese located in the city of Oslo in Norway.

Parishes

1070?: Established as Diocese of Oslo
1537: Suppressed
August 7, 1868: Restored as Mission “sui iuris” of Norway from the Apostolic Vicariate of Sweden
August 17, 1869: Promoted as the Apostolic Prefecture of Norway
March 11, 1892: Promoted as the Apostolic Vicariate of Norway
June 1, 1913: Renamed as the Apostolic Vicariate of Norway and Spitsbergen
December 15, 1925: Renamed as the Apostolic Vicariate of Norway
April 10, 1931: Renamed as the Apostolic Vicariate of Oslo
June 29, 1953: Promoted as Diocese of Oslo

Unusually for a Scandinavian diocese, a majority of Oslo's bishops have actually been of the local ethnicity (in this case, Norwegian).

Bishops of Oslo (Roman rite)
- Bishop Bernt Ivar Eidsvig, C.R.S.A.(July 29, 2005 – present)
- Bishop Gerhard Schwenzer, SS.CC. (November 26, 1983 – July 29, 2005)
- Bishop John Willem Nicolaysen Gran, O.C.S.O. (November 25, 1964 – November 2, 1983)
- Bishop Jacques Mangers, S.M. (June 29, 1953 – November 25, 1964)
Vicars Apostolic of Oslo (Roman Rite)
- Bishop Jacques Mangers, S.M. (July 12, 1932 – June 29, 1953)
Vicars Apostolic of Norway (Roman Rite)
- Bishop Olaf Offerdahl (March 13, 1930 – October 7, 1930)
- Fr. Olaf Offerdahl (later Bishop) (Apostolic Administrator October 11, 1928 – March 13, 1930)
- Bishop Johannes Olav Smit (December 15, 1925 – October 11, 1928)
Vicars Apostolic of Norway and Spitsbergen (Roman Rite)
- Bishop Johannes Olav Smit (April 11, 1922 – December 25, 1925)
- Bishop Johannes Olaf Fallize (later Archbishop) (June 1, 1913 – June 21, 1922)
Vicars Apostolic of Norway (Roman Rite)
- Bishop Johannes Olaf Fallize (later Archbishop) (March 11, 1892 – June 1, 1913)
Prefects Apostolic of Norway (Roman Rite)
- Fr. Johannes Olaf Fallize (later Archbishop) (February 6, 1887 – March 11, 1892)