Changes in Ecclesiastical Jurisdictions in Hungary

Date	Change
997	Territorial Abbacy of Pannonhalma was established (without ecclesiastical province)
1001	Metropolitan Archdiocese of Esztergom was established (from Diocese of Nitra, Diocese of Passau and Diocese of Regensburg)
1004	Diocese of Eger was established (became suffragan of Esztergom)
1004	Diocese of Vác was established (became suffragan of Esztergom)
1009	Diocese of Győr was established (became suffragan of Esztergom)
1009	Diocese of Pécs was established (became suffragan of Esztergom)
1009	Diocese of Veszprém was established (became suffragan of Esztergom)
1010	Diocese of Kalocsa was established (became suffragan of Esztergom)
1030	Diocese of Csanád was established (became suffragan of Esztergom)
1135	Diocese of Kalocsa was promoted as Metropolitan Archdiocese of Kalocsa (with suffragan sees Csanád, Oradea Mare, Pécs and Transilvania)
1770	Metropolitan Archdiocese of Esztergom lost territory to Diocese of Transilvania
1775	Metropolitan Archdiocese of Kalocsa lost territory to Diocese of Csanád
1777.06.16	Diocese of Székesfehérvár was established (from Diocese of Győr and Diocese of Veszprém and became suffragan of Esztergom)
1777.06.17	Diocese of Szombathely was established (from Diocese of Veszprém and Diocese of Zagreb and became suffragan of Esztergom)
1784	Diocese of Győr lost territory to Metropolitan Archdiocese of Wien
1804.08.09	Diocese of Eger was promoted as Metropolitan Archdiocese of Eger (with suffragan sees Košice, Rožňava, Satu Mare and Spiš and lost territory to establish Diocese of Košice and Diocese of Satu Mare)
1912.06.08	Diocese of Hajdúdorog (Hungarian Rite) was established (from Metropolitanate sui juris of Făgăraş şi Alba Iulia, Metropolitan Archdiocese of Esztergom, Diocese of Gherla, Armenopoli, Szamos-Ujvár, Diocese of Mukacheve, Diocese of Oradea Mare and Diocese of Prešov and became suffragan of Esztergom)
1924.06.04	Apostolic Exarchate of Miskolc (Hungarian Rite) was established
1929.07.17	Apostolic Prefecture of Mérk was established (from Metropolitan Archdiocese of Eger)
1934.04.09	Diocese of Hajdúdorog (Hungarian Rite) lost territory to Metropolitanate sui juris of Făgăraş şi Alba Iulia, Diocese of Maramureş and Diocese of Oradea Mare
1938.12.17	Metropolitan Archdiocese of Eger exchanged territory with Apostolic Prefecture of Mérk
1938.12.17	Apostolic Prefecture of Mérk exchanged territory with Metropolitan Archdiocese of Eger
1939	Apostolic Prefecture of Mérk was suppressed (to Metropolitan Archdiocese of Eger)
1977.12.30	Diocese of Győr lost territory to Metropolitan Archdiocese of Trnava
1977.12.30	Territorial Abbacy of Pannonhalma lost territory to Metropolitan Archdiocese of Trnava
1982.08.05	Diocese of Csanád was renamed as Diocese of Szeged–Csanád (gained territory from Diocese of Oradea Mare)
1993.05.31	Diocese of Debrecen–Nyíregyháza was established (from Metropolitan Archdiocese of Eger and Diocese of Szeged–Csanád and became suffragan of Eger)
1993.05.31	Metropolitan Archdiocese of Eger lost territory to Diocese of Szeged–Csanád and Diocese of Vác
1993.05.31	Metropolitan Archdiocese of Esztergom was renamed as Metropolitan Archdiocese of Esztergom–Budapest (gained territory from Diocese of Székesfehérvár and Diocese of Vác, exchanged territory with Diocese of Győr and lost suffragan sees Szombathely, Vác and Veszprém)
1993.05.31	Diocese of Győr exchanged territory with Metropolitan Archdiocese of Esztergom, Diocese of Székesfehérvár and Territorial Abbacy of Pannonhalma
1993.05.31	Metropolitan Archdiocese of Kalocsa was renamed as Metropolitan Archdiocese of Kalocsa–Kecskemét (gained territory from Diocese of Vác and exchanged territory with Diocese of Pécs)
1993.05.31	Diocese of Kaposvár was established (from Diocese of Veszprém and became suffragan of Veszprém)
1993.05.31	Territorial Abbacy of Pannonhalma exchanged territory with Diocese of Győr
1993.05.31	Diocese of Pécs exchanged territory with Metropolitan Archdiocese of Kalocsa
1993.05.31	Diocese of Székesfehérvár lost territory to Metropolitan Archdiocese of Esztergom–Budapest
1993.05.31	Diocese of Veszprém was promoted as Metropolitan Archdiocese of Veszprém (with suffragan sees Kaposvár and Szombathely and lost territory to establish Diocese of Kaposvár)
1993.05.31	Diocese of Vác lost territory to Metropolitan Archdiocese of Esztergom–Budapest and Metropolitan Archdiocese of Kalocsa–Kecskemét
1994.04.18	Military Ordinariate of Magyarországi katonai ordinariátus was established
2011.03.05	Diocese of Hajdúdorog (Hungarian Rite) lost territory to Apostolic Exarchate of Miskolc
2015.03.20	Diocese of Hajdúdorog (Hungarian Rite) was promoted as Metropolitanate sui juris of Hajdúdorog (with suffragan sees Miskolc and Nyíregyháza and lost territory to establish Diocese of Nyíregyháza)
2015.03.20	Apostolic Exarchate of Miskolc (Hungarian Rite) was promoted as Diocese of Miskolc (became suffragan of Hajdúdorog)
2015.03.20	Diocese of Nyíregyháza (Hungarian Rite) was established (from Diocese of Hajdúdorog and became suffragan of Hajdúdorog)