Changes in Ecclesiastical Jurisdictions in Iraq

Date	Change
280	Diocese of Perat-Maishan (Chaldean Rite) was established
300	Archdiocese of Kaškar (Chaldean Rite) was established
300	Diocese of Seleucia–Ctesifonte (Chaldean Rite) was established
400	Diocese of Seleucia–Ctesifonte (Chaldean Rite) was promoted as Metropolitan Archdiocese of Seleucia–Ctesifonte
410	Diocese of Perat-Maishan (Chaldean Rite) was promoted as Metropolitan Archdiocese of Perat-Maishan
500	Archdiocese of Kaškar (Chaldean Rite) was suppressed
800	Metropolitan Archdiocese of Babylon (Chaldean Rite) was established (from the suppressed Metropolitan Archdiocese of Seleucia–Ctesifonte)
800	Metropolitan Archdiocese of Seleucia–Ctesifonte (Chaldean Rite) was suppressed (to establish Metropolitan Archdiocese of Babylon)
1200	Metropolitan Archdiocese of Perat-Maishan (Chaldean Rite) was suppressed
1553.04.20	Metropolitan Archdiocese of Babylon (Chaldean Rite) was promoted as Patriarchal See of Babylon
1553.04.20	Metropolitan Archdiocese of Baghdad (Chaldean Rite) was established
1628	Mission sui juris of Syria and Cilicia was established
1632.09.06	Diocese of Baghdad was established (without ecclesiastical province)
1750	Mission sui juris of Mossul was established
1785	Diocese of Amadiyah (Chaldean Rite) was established (became suffragan of Babylon)
1789	Metropolitan Archdiocese of Kirkuk (Chaldean Rite) was established
1790	Archdiocese of Mossul (Syriac Rite) was established (without ecclesiastical province)
1800	Diocese of Mossul (Chaldean Rite) was established (without ecclesiastical province)
1817	Mission sui juris of Syria and Cilicia was promoted as Apostolic Prefecture of Syria and Cilicia
1838.09.17	Patriarchal Exarchate of Iraq (Greek-Melkite Rite) was established
1848.08.19	Diocese of Baghdad was promoted as Archdiocese of Baghdad
1850	Diocese of Aqrā (Chaldean Rite) was established (from Diocese of Amadiyah)
1850	Diocese of Zaku (Chaldean Rite) was established (from Diocese of Amadiyah and Diocese of Gazireh)
1860	Titular Archiepiscopal See of Perat-Maishan (Chaldean Rite) was restored
1862.09.28	Archdiocese of Baghdad (Syriac Rite) was established (without ecclesiastical province)
1895	Titular Archiepiscopal See of Perat-Maishan (Chaldean Rite) was suppressed
1895.04.23	Diocese of Aqrā (Chaldean Rite) was suppressed (to Diocese of Amadiyah)
1896	Apostolic Prefecture of Syria and Cilicia was demoted as Mission sui juris of Syria and Cilicia
1910.02.24	Diocese of Aqrā (Chaldean Rite) was restored (from Diocese of Amadiyah and became suffragan of Babylon)
1953	Mission sui juris of Syria and Cilicia was suppressed
1954.01.17	Archdiocese of Bassorah (Chaldean Rite) was restored (from Metropolitan Archdiocese of Baghdad and without ecclesiastical province)
1954.06.29	Archdiocese of Baghdad (Armenian Rite) was established (from Archdiocese of Mardin and without ecclesiastical province)
1960.10.24	Diocese of Alquoch (Chaldean Rite) was established (from Metropolitan Archdiocese of Baghdad and became suffragan of Babylon)
1967	Titular Archiepiscopal See of Kaškar (Chaldean Rite) was restored
1967.02.14	Diocese of Mossul (Chaldean Rite) was promoted as Archdiocese of Mossul
1968.03.07	Archdiocese of Erbil (Chaldean Rite) was established (from Metropolitan Archdiocese of Kirkuk and without ecclesiastical province)
1968.03.07	Diocese of Sulaimaniya (Chaldean Rite) was established (became suffragan of Kirkuk)
1969	Mission sui juris of Mossul was suppressed
1980	Titular Episcopal See of Anbar (Chaldean Rite) was established
1986	Titular Metropolitan See of Tagritum (Syriac Rite) was established
1991	Patriarchal Exarchate of Basra and the Gulf (Syriac Rite) was established
2004.07	Titular Episcopal See of Hirta was established
2013.06.10	Diocese of Amadiyah (Chaldean Rite) was renamed as Diocese of Amadiyah and Zaku (gained territory from the suppressed Diocese of Zaku)
2013.06.10	Diocese of Zaku (Chaldean Rite) was suppressed (to Diocese of Amadiyah and Zaku)
2013.07.11	Metropolitan Archdiocese of Kirkuk (Chaldean Rite) was renamed as Metropolitan Archdiocese of Kirkuk–Sulaimaniya (gained territory from the suppressed Diocese of Sulaimaniya and lost suffragan see Sulaimaniya)
2013.07.11	Diocese of Sulaimaniya (Chaldean Rite) was suppressed (to Metropolitan Archdiocese of Kirkuk–Sulaimaniya)
2018.12.22	Diocese of Aqrā (Chaldean Rite) was suppressed (to Archdiocese of Mossul–Aqrā)
2018.12.22	Archdiocese of Mossul (Chaldean Rite) was renamed as Archdiocese of Mossul–Aqrā (gained territory from the suppressed Diocese of Aqrā)
2019.06.28	Diocese of Adiabene (Syriac Rite) was established (from Archdiocese of Mossul and without ecclesiastical province)
2020.06.27	Diocese of Amadiyah and Zaku (Chaldean Rite) was renamed as Diocese of Duhok (lost territory to establish Diocese of Zakho)
2020.06.27	Diocese of Zakho (Chaldean Rite) was restored (from Diocese of Amadiyah and Zaku and became suffragan of Babylon)
2020.09.10	Titular Metropolitan See of Tagritum (Syriac Rite) was demoted as Titular Episcopal See of Tagritum
2022.02.19	Patriarchal See of Babylon (Chaldean Rite) was renamed as Patriarchal See of Baghdad