Jun 162009
Founded as the Vicariate Apostolic of Finland on 8 June 1920. Elevated to the Diocese of Helsinki on 25 February 1955. Suffragan of the Vatican. Notable bishops include
- Bishop Johannes Michael Buckx
- Bishop Józef Wróbel
- Bishop Paul Verschuren
- Bishop Teemu Jyrki Juhani Sippo
- Bishop Willem Petrus Bartholomaeus Cobben
See also