The Church, place by place
Find a Catholic Diocese
Meet the diocese behind your parish. Explore its bishop, cathedral, history and churches, then find a place for Mass.
3,158 published diocesan profiles
- Diocese of OsornoOsorno · Chile
- Diocese of OssoryOssory · Ireland
- Diocese of OstiaOstia · Italy
- Diocese of Ostrava-OpavaOstrava-Opava · Czechia
- Diocese of OsórioOsório · Brazil
- Archdiocese of OtrantoOtranto · Italy
- Archdiocese of Ottawa–CornwallOttawa · Canada
- Diocese of OtukpoOtukpo · Nigeria
- Diocese of OuahigouyaOuahigouya · Burkina Faso
- Diocese of OudtshoornOudtshoorn · South Africa
- Diocese of OuessoOuesso · Republic of the Congo
- Diocese of OurinhosOurinhos · Brazil
- Diocese of OwensboroOwensboro · United States
- Diocese of OyemOyem · Gabon
- Diocese of OyoOyo · Nigeria
- Archdiocese of OzamizOzamiz · Philippines
- Diocese of OzieriOzieri · Italy
- Diocese of P'yŏng-yangP'yŏng-yang · North Korea
- Diocese of PadangPadang · Indonesia
- Diocese of PadovaPadova · Italy
- Diocese of PagadianPagadian · Philippines
- Diocese of PaisleyPaisley · United Kingdom
- Diocese of PalaPala · Chad
- Diocese of PalangkarayaPalangkaraya · Indonesia
- Diocese of PalayamkottaiPalayamkottai · India
- Archdiocese of PalembangPalembang · Indonesia
- Diocese of PalenciaPalencia · Spain
- Archdiocese of PalermoPalermo · Italy
- Diocese of PalestrinaPalestrina · Italy
- Diocese of Palm BeachPalm Beach · United States
An independent guide compiled from published sources. Coverage varies by diocese.