| Unknown |
Titular Episcopal See of Abila was established |
| Unknown |
Titular Episcopal See of Adraha was established |
| Unknown |
Titular Episcopal See of Aradus was established |
| Unknown |
Titular Episcopal See of Arethusa (Syriac Rite) was established |
| Unknown |
Titular Episcopal See of Balaneæ was established |
| Unknown |
Titular Episcopal See of Barbalissus was established |
| Unknown |
Titular Episcopal See of Barcusus was established |
| Unknown |
Titular Metropolitan See of Bostra was established |
| Unknown |
Titular Episcopal See of Canatha was established |
| Unknown |
Titular Episcopal See of Constantia was established |
| Unknown |
Titular Archiepiscopal See of Cyrrhus was established |
| Unknown |
Titular Archiepiscopal See of Cyrrhus (Maronite Rite) was established |
| Unknown |
Titular Episcopal See of Danaba-orum was established |
| Unknown |
Titular Episcopal See of Dionysias was established |
| Unknown |
Titular Episcopal See of Europus was established |
| Unknown |
Titular Episcopal See of Evaria was established |
| Unknown |
Titular Episcopal See of Gindarus was established |
| Unknown |
Titular Episcopal See of Hamatha was established |
| Unknown |
Titular Episcopal See of Hemesa (Maronite Rite) was established |
| Unknown |
Titular Metropolitan See of Hierapolis was established |
| Unknown |
Titular Episcopal See of Hierapolis (Syriac Rite) was established |
| Unknown |
Titular Episcopal See of Iabruda was established |
| Unknown |
Titular Episcopal See of Mariama was established |
| Unknown |
Titular Episcopal See of Nebo was established |
| Unknown |
Titular Episcopal See of Neocæsarea was established |
| Unknown |
Titular Archiepiscopal See of Palmyra was established |
| Unknown |
Titular Episcopal See of Palmyra (Greek-Melkite Rite) was established |
| Unknown |
Titular Episcopal See of Paltos was established |
| Unknown |
Titular Episcopal See of Paneade was established |
| Unknown |
Titular Episcopal See of Raphaneæ was established |
| Unknown |
Titular Episcopal See of Resaina was established |
| Unknown |
Titular Episcopal See of Sergiopolis antea Resapha was established |
| Unknown |
Titular Episcopal See of Sura was established |
| Unknown |
Titular Episcopal See of Zeugma was established |
| 200 |
Archdiocese of Apamea was established |
| 200 |
Diocese of Laodicea was established |
| 300 |
Diocese of Arethusus was established |
| 300 |
Metropolitan Archdiocese of Berœa was established |
| 300 |
Diocese of Circesium was established |
| 300 |
Metropolitan Archdiocese of Damascus (Greek-Melkite Rite) was established |
| 300 |
Metropolitan Archdiocese of Hemesa was established |
| 300 |
Diocese of Philippopolis was established |
| 325 |
Metropolitan Archdiocese of Damascus was established |
| 380 |
Diocese of Callinicum was established |
| 400 |
Diocese of Aleppo (Greek-Melkite Rite) was established |
| 550 |
Diocese of Callinicum was suppressed |
| 600 |
Diocese of Aleppo (Greek-Melkite Rite) was promoted as Archdiocese of Aleppo |
| 600 |
Metropolitan Archdiocese of Berœa was suppressed |
| 600 |
Diocese of Circesium was suppressed |
| 900 |
Metropolitan Archdiocese of Hemesa was suppressed |
| 1000 |
Diocese of Philippopolis was suppressed |
| 1100 |
Metropolitan Archdiocese of Damascus was suppressed |
| 1200 |
Diocese of Arethusus was suppressed |
| 1300 |
Archdiocese of Apamea was demoted as Titular Metropolitan See of Apamea |
| 1300 |
Titular Metropolitan See of Damascus was restored |
| 1300 |
Diocese of Laodicea was demoted as Titular Archiepiscopal See of Laodicea |
| 1500 |
Titular Episcopal See of Arethusus was restored |
| 1527 |
Archdiocese of Damascus (Maronite Rite) was established (without ecclesiastical province) |
| 1628 |
Mission sui juris of Syria and Cilicia was established |
| 1633 |
Metropolitan Archdiocese of Damascus (Syriac Rite) was established |
| 1645 |
Apostolic Vicariate of Aleppo was established |
| 1659 |
Apostolic Vicariate of Aleppo was suppressed |
| 1659.01.28 |
Archdiocese of Aleppo (Syriac Rite) was established (without ecclesiastical province) |
| 1678 |
Metropolitan Archdiocese of Homs (Syriac Rite) was established |
| 1687 |
Metropolitan Archdiocese of Bosra (Greek-Melkite Rite) was established |
| 1700 |
Archdiocese of Aleppo (Maronite Rite) was established (without ecclesiastical province) |
| 1700 |
Titular Episcopal See of Callinicum was restored |
| 1700 |
Titular Metropolitan See of Hemesa was restored |
| 1700 |
Diocese of Qâra (Greek-Melkite Rite) was established |
| 1710 |
Diocese of Aleppo (Armenian Rite) was established (without ecclesiastical province) |
| 1724.10.01 |
Patriarchal See of Antioch (Greek-Melkite Rite) was established |
| 1727 |
Archdiocese of Hama (Greek-Melkite Rite) was established |
| 1727 |
Diocese of Homs (Greek-Melkite Rite) was established |
| 1750 |
Archdiocese of Haūrān (Greek-Melkite Rite) was established |
| 1762.06.27 |
Apostolic Vicariate of Aleppo was restored |
| 1790 |
Archdiocese of Aleppo (Greek-Melkite Rite) was promoted as Metropolitan Archdiocese of Aleppo |
| 1800 |
Diocese of Hama (Syriac Rite) was established |
| 1800 |
Diocese of Jabrud (Greek-Melkite Rite) was established |
| 1800 |
Diocese of Nabk (Syriac Rite) was established |
| 1800 |
Diocese of Qâra (Greek-Melkite Rite) was suppressed |
| 1817 |
Mission sui juris of Syria and Cilicia was promoted as Apostolic Prefecture of Syria and Cilicia |
| 1817 |
Apostolic Vicariate of Aleppo was renamed as Apostolic Vicariate of Syria, Egypt, Arabia and Cyprus |
| 1839 |
Apostolic Vicariate of Syria, Egypt, Arabia and Cyprus was renamed as Apostolic Vicariate of Aleppo (lost territory to establish Apostolic Prefecture of Abyssinia) |
| 1849.03.04 |
Archdiocese of Hama (Greek-Melkite Rite) was suppressed (to Metropolitan Archdiocese of Homs and united to Diocese of Homs) |
| 1849.03.04 |
Diocese of Homs (Greek-Melkite Rite) was promoted as Metropolitan Archdiocese of Homs (gained territory from the suppressed Archdiocese of Hama and Diocese of Jabrud and gained title of Jabrud and Hama) |
| 1849.03.04 |
Diocese of Jabrud (Greek-Melkite Rite) was suppressed (to Metropolitan Archdiocese of Homs and united to Diocese of Homs) |
| 1850 |
Diocese of Hama (Syriac Rite) was suppressed (to Metropolitan Archdiocese of Homs and united to Metropolitan Archdiocese of Homs) |
| 1850 |
Diocese of Nabk (Syriac Rite) was suppressed (to Metropolitan Archdiocese of Homs and united to Metropolitan Archdiocese of Homs) |
| 1881 |
Metropolitan Archdiocese of Bosra (Greek-Melkite Rite) was renamed as Metropolitan Archdiocese of Bosra–Hauran (gained territory from the suppressed Archdiocese of Haūrān) |
| 1881 |
Archdiocese of Haūrān (Greek-Melkite Rite) was suppressed (to Metropolitan Archdiocese of Bosra–Hauran) |
| 1885 |
Titular Episcopal See of Paneade was renamed as Titular Episcopal See of Cæsarea Paneas |
| 1896 |
Titular Archiepiscopal See of Laodicea (Greek-Melkite Rite) was established |
| 1896 |
Apostolic Prefecture of Syria and Cilicia was demoted as Mission sui juris of Syria and Cilicia |
| 1898 |
Titular Episcopal See of Cæsarea Paneas was renamed as Titular Episcopal See of Cæsarea Paneas |
| 1899 |
Titular Episcopal See of Circesium was restored |
| 1899.02.03 |
Diocese of Aleppo (Armenian Rite) was promoted as Archdiocese of Aleppo |
| 1901 |
Diocese of Syria (Chaldean Rite) was established (without ecclesiastical province) |
| 1907 |
Titular Archiepiscopal See of Laodicea (Greek-Melkite Rite) was renamed as Titular Archiepiscopal See of Laodicea |
| 1914 |
Titular Episcopal See of Arethusus was renamed as Titular Episcopal See of Arethusus |
| 1914 |
Titular Episcopal See of Arethusa (Syriac Rite) was renamed as Titular Episcopal See of Arethusus |
| 1914 |
Titular Archiepiscopal See of Laodicea (Greek-Melkite Rite) was suppressed |
| 1919 |
Titular Episcopal See of Hamatha (Maronite Rite) was established |
| 1919 |
Titular Archiepiscopal See of Laodicea (Maronite Rite) was established |
| 1922 |
Titular Episcopal See of Laodicea (Greek-Melkite Rite) was restored |
| 1925 |
Titular Episcopal See of Abila was renamed as Titular Episcopal See of Abyla |
| 1925 |
Titular Episcopal See of Hamatha was renamed as Titular Episcopal See of Amatha |
| 1925 |
Titular Episcopal See of Hamatha (Maronite Rite) was renamed as Titular Episcopal See of Amatha |
| 1925 |
Titular Metropolitan See of Apamea was renamed as Titular Metropolitan See of Apamea |
| 1925 |
Titular Episcopal See of Arethusus was renamed as Titular Episcopal See of Arethusa |
| 1925 |
Titular Episcopal See of Arethusus (Syriac Rite) was renamed as Titular Episcopal See of Arethusa |
| 1925 |
Titular Episcopal See of Balaneæ was renamed as Titular Episcopal See of Balanea |
| 1925 |
Titular Episcopal See of Constantia was renamed as Titular Episcopal See of Constantia |
| 1925 |
Titular Episcopal See of Danaba-orum was renamed as Titular Episcopal See of Danaba |
| 1925 |
Titular Episcopal See of Evaria was renamed as Titular Episcopal See of Euhara |
| 1925 |
Titular Archiepiscopal See of Laodicea was renamed as Titular Archiepiscopal See of Laodicea ad mare |
| 1925 |
Titular Archiepiscopal See of Laodicea (Maronite Rite) was renamed as Titular Archiepiscopal See of Laodicea ad mare |
| 1925 |
Titular Episcopal See of Laodicea (Greek-Melkite Rite) was renamed as Titular Episcopal See of Laodicea ad mare |
| 1925 |
Titular Episcopal See of Mariama was renamed as Titular Episcopal See of Mariamme |
| 1925 |
Titular Episcopal See of Nebo was renamed as Titular Episcopal See of Neve |
| 1925 |
Titular Archiepiscopal See of Palmyra was demoted as Titular Episcopal See of Palmyra |
| 1925 |
Titular Episcopal See of Paltos was renamed as Titular Episcopal See of Paltus |
| 1925 |
Titular Episcopal See of Raphaneæ was renamed as Titular Episcopal See of Raphanea |
| 1925 |
Titular Episcopal See of Sergiopolis antea Resapha was promoted as Titular Metropolitan See of Sergiopolis |
| 1926 |
Titular Episcopal See of Cæsarea Paneas was renamed as Titular Episcopal See of Cæsarea |
| 1926 |
Titular Metropolitan See of Hemesa was demoted as Titular Episcopal See of Hemesa |
| 1926 |
Titular Episcopal See of Hierapolis (Syriac Rite) was renamed as Titular Episcopal See of Hierapolis |
| 1926 |
Titular Metropolitan See of Hierapolis was renamed as Titular Metropolitan See of Hierapolis in Syria |
| 1926 |
Titular Episcopal See of Neocæsarea was renamed as Titular Episcopal See of Neocæsarea |
| 1926 |
Titular Episcopal See of Philippopolis was renamed as Titular Episcopal See of Philippopolis |
| 1927 |
Titular Episcopal See of Constantia was renamed as Titular Episcopal See of Constantia |
| 1927 |
Titular Episcopal See of Hemesa (Maronite Rite) was suppressed |
| 1929 |
Titular Episcopal See of Abyla was renamed as Titular Episcopal See of Abila |
| 1929 |
Titular Episcopal See of Adraha was renamed as Titular Episcopal See of Adraa |
| 1929 |
Titular Episcopal See of Amatha was renamed as Titular Episcopal See of Amathus |
| 1929 |
Titular Episcopal See of Amatha (Maronite Rite) was renamed as Titular Episcopal See of Amathus |
| 1929 |
Titular Archiepiscopal See of Anasartha was established |
| 1929 |
Titular Metropolitan See of Berœa was restored |
| 1929 |
Titular Episcopal See of Cæsarea was renamed as Titular Episcopal See of Cæsarea |
| 1929 |
Titular Episcopal See of Euhara was renamed as Titular Episcopal See of Euaria |
| 1929 |
Titular Archiepiscopal See of Gabula was established |
| 1929 |
Titular Episcopal See of Hemesa was promoted as Titular Metropolitan See of Hemesa |
| 1929 |
Titular Archiepiscopal See of Laodicea ad mare was renamed as Titular Archiepiscopal See of Laodicea |
| 1929 |
Titular Archiepiscopal See of Laodicea ad mare (Maronite Rite) was renamed as Titular Archiepiscopal See of Laodicea |
| 1929 |
Titular Episcopal See of Laodicea ad mare (Greek-Melkite Rite) was renamed as Titular Episcopal See of Laodicea |
| 1929 |
Titular Episcopal See of Paltus was promoted as Titular Archiepiscopal See of Paltus |
| 1929 |
Titular Episcopal See of Resaina was renamed as Titular Episcopal See of Rhesaina |
| 1930 |
Titular Episcopal See of Abila was renamed as Titular Episcopal See of Abila Lysaniæ |
| 1930 |
Titular Episcopal See of Neve was renamed as Titular Episcopal See of Neve |
| 1932 |
Titular Archiepiscopal See of Gabala was established |
| 1933 |
Titular Episcopal See of Abila Lysaniæ was renamed as Titular Episcopal See of Abila Lysaniæ |
| 1933 |
Titular Episcopal See of Agrippias was established |
| 1933 |
Titular Episcopal See of Amathus was suppressed |
| 1933 |
Titular Episcopal See of Antarados was established |
| 1933 |
Titular Metropolitan See of Apamea was renamed as Titular Metropolitan See of Apamea in Syria |
| 1933 |
Titular Episcopal See of Bosana was established |
| 1933 |
Titular Episcopal See of Cæsarea was renamed as Titular Episcopal See of Cesarea Philippi |
| 1933 |
Titular Archiepiscopal See of Chalcis in Syria was established |
| 1933 |
Titular Episcopal See of Chonochora was established |
| 1933 |
Titular Episcopal See of Constantia was renamed as Titular Episcopal See of Constantia in Arabia |
| 1933 |
Titular Episcopal See of Corada was established |
| 1933 |
Titular Episcopal See of Amathus (Maronite Rite) was renamed as Titular Episcopal See of Epiphania in Syria |
| 1933 |
Titular Episcopal See of Erra was established |
| 1933 |
Titular Episcopal See of Euaria was renamed as Titular Episcopal See of Eurœa in Phœnicia |
| 1933 |
Titular Episcopal See of Hierapolis (Syriac Rite) was renamed as Titular Episcopal See of Hierapolis in Syria |
| 1933 |
Titular Episcopal See of Laodicea ad Libanum was established |
| 1933 |
Titular Archiepiscopal See of Laodicea was renamed as Titular Archiepiscopal See of Laodicea in Syria |
| 1933 |
Titular Archiepiscopal See of Laodicea (Maronite Rite) was renamed as Titular Archiepiscopal See of Laodicea in Syria |
| 1933 |
Titular Episcopal See of Laodicea (Greek-Melkite Rite) was renamed as Titular Episcopal See of Laodicea in Syria |
| 1933 |
Titular Episcopal See of Larissa in Syria was established |
| 1933 |
Titular Episcopal See of Massimianopolis in Arabia was established |
| 1933 |
Titular Episcopal See of Neapolis in Arabia was established |
| 1933 |
Titular Episcopal See of Neocæsarea was renamed as Titular Episcopal See of Neocæsarea in Syria |
| 1933 |
Titular Episcopal See of Orisa was established |
| 1933 |
Titular Episcopal See of Parembolæ in Phœnicia was established |
| 1933 |
Titular Episcopal See of Philippopolis was renamed as Titular Episcopal See of Philippopolis in Arabia |
| 1933 |
Titular Episcopal See of Phæna was established |
| 1933 |
Titular Episcopal See of Saccæa was established |
| 1933 |
Titular Episcopal See of Salamias was established |
| 1933 |
Titular Episcopal See of Seleucobelus was established |
| 1933 |
Titular Episcopal See of Urima was established |
| 1933 |
Titular Episcopal See of Zenobias was established |
| 1933 |
Titular Episcopal See of Zeugma in Mesopotamia was established |
| 1933 |
Titular Episcopal See of Zeugma was renamed as Titular Episcopal See of Zeugma in Syria |
| 1933 |
Titular Episcopal See of Zorava was established |
| 1939.10.05 |
Apostolic Vicariate of Aleppo lost territory to Apostolic Vicariate of Constantinopole |
| 1939.12.09 |
Apostolic Vicariate of Aleppo lost territory to Apostolic Vicariate of Constantinopole |
| 1944 |
Titular Episcopal See of Epiphania in Syria was restored |
| 1944 |
Titular Episcopal See of Epiphania in Syria (Maronite Rite) was suppressed |
| 1951 |
Titular Episcopal See of Palmyra (Greek-Melkite Rite) was restored |
| 1953 |
Mission sui juris of Syria and Cilicia was suppressed |
| 1954.04.16 |
Apostolic Administration of Latakia (Maronite Rite) was established (from Archdiocese of Tripoli) |
| 1954.06.29 |
Diocese of Kameshli (Armenian Rite) was established (from Archdiocese of Mardin and became suffragan of Cilicia) |
| 1956 |
Titular Archiepiscopal See of Cyrrhus (Maronite Rite) was suppressed |
| 1957.07.03 |
Diocese of Syria (Chaldean Rite) was renamed as Diocese of Aleppo (gained territory from the suppressed Apostolic Administration of Upper Gazireh) |
| 1957.07.15 |
Diocese of Hassaké (Syriac Rite) was established (without ecclesiastical province) |
| 1961 |
Titular Archiepiscopal See of Hierapolis in Syria (Greek-Melkite Rite) was established |
| 1961.04.28 |
Titular Episcopal See of Laodicea in Syria (Greek-Melkite Rite) was suppressed (to establish Archdiocese of Latakia) |
| 1961.04.28 |
Archdiocese of Latakia (Greek-Melkite Rite) was established (from Diocese of Tripoli, from the suppressed former Titular Episcopal See of Laodicea in Syria and without ecclesiastical province) |
| 1962 |
Titular Episcopal See of Callinicum was suppressed (to establish Titular Episcopal See of Callinicum) |
| 1962 |
Titular Episcopal See of Callinicum (Maronite Rite) was established (from the suppressed Titular Episcopal See of Callinicum) |
| 1963 |
Titular Metropolitan See of Apamea in Syria (Syriac Rite) was established |
| 1964.12.03 |
Diocese of Hassaké (Syriac Rite) was promoted as Archdiocese of Hassaké–Nisibi |
| 1970 |
Titular Episcopal See of Apamea in Syria (Maronite Rite) was established |
| 1973 |
Titular Episcopal See of Epiphania in Syria was renamed as Titular Episcopal See of Epiphania in Syria |
| 1977.08.04 |
Titular Archiepiscopal See of Laodicea in Syria (Maronite Rite) was suppressed (to Diocese of Latakia) |
| 1977.08.04 |
Apostolic Administration of Latakia (Maronite Rite) was promoted as Diocese of Latakia (gained territory from the suppressed Titular Archiepiscopal See of Laodicea in Syria and without ecclesiastical province) |
| 1980 |
Titular Metropolitan See of Apamea in Syria (Greek-Melkite Rite) was established |
| 1984.11.06 |
Patriarchal Exarchate of Damascus (Armenian Rite) was established |
| 2010 |
Titular Episcopal See of Parembolæ in Phœnicia was renamed as Titular Episcopal See of Parembolæ in Arabia |
| 2010 |
Titular Episcopal See of Saccæa was suppressed |
| 2019.12.20 |
Titular Metropolitan See of Apamea in Syria (Greek-Melkite Rite) was demoted as Titular Episcopal See of Apamea in Syria |
