 | 1971 | 1972 | 1973 |  |
Date | Country | Change |
| 1972 |  Italy | Diocese of Larino lost territory to Diocese of San Severo |
| 1972 |  Turkiye | Diocese of Adana (Armenian Rite) was suppressed |
| 1972 | Turkiye | Diocese of Amida (Armenian Rite) was suppressed |
| 1972 | Turkiye | Diocese of Ancyra (Armenian Rite) was suppressed |
| 1972 | Turkiye | Diocese of Artvin (Armenian Rite) was suppressed |
| 1972 | Turkiye | Diocese of Cesarea in Cappadocia (Armenian Rite) was suppressed |
| 1972 | Turkiye | Diocese of Garin (Armenian Rite) was suppressed |
| 1972 | Turkiye | Diocese of Kharput (Armenian Rite) was suppressed |
| 1972 | Turkiye | Diocese of Marasc (Armenian Rite) was suppressed |
| 1972 | Turkiye | Diocese of Mardin and Amida (Syriac Rite) was suppressed |
| 1972 | Turkiye | Archdiocese of Mardin (Armenian Rite) was suppressed |
| 1972 | Turkiye | Diocese of Mardin (Chaldean Rite) was suppressed |
| 1972 | Turkiye | Diocese of Melitene (Armenian Rite) was suppressed |
| 1972 | Turkiye | Diocese of Mush (Armenian Rite) was suppressed |
| 1972 | Turkiye | Titular Episcopal See of Prusa (Armenian Rite) was restored |
| 1972 | Turkiye | Archdiocese of Sebaste (Armenian Rite) was suppressed |
| 1972 | Turkiye | Titular Episcopal See of Seert (Chaldean Rite) was restored |
| 1972 | Turkiye | Titular Episcopal See of Tokat (Armenian Rite) was restored |
| 1972 | Turkiye | Diocese of Trapezus (Armenian Rite) was suppressed |
| 1972.01.21 |  Argentina | Territorial Prelature of Humahuaca lost territory to Metropolitan Archdiocese of Salta |
| 1972.01.21 | Argentina | Diocese of Orán lost territory to Territorial Prelature of Humahuaca |
| 1972.03.23 |  India | Apostolic Exarchate of Bijnor (Syro-Malabar Rite) was established (from Diocese of Meerut and became suffragan of Agra) |
| 1972.03.23 | India | Apostolic Exarchate of Jagdalpur (Syro-Malabar Rite) was established (from Apostolic Prefecture of Raipur) |
| 1972.03.25 |  Kuwait | Patriarchal Exarchate of Kuwait (Greek-Melkite Rite) was established |
| 1972.03.25 |  Mexico | Diocese of Ciudad Guzmán was established (from Metropolitan Archdiocese of Guadalajara and Diocese of Colima and became suffragan of Guadalajara) |
| 1972.03.25 | Mexico | Diocese of San Juan de los Lagos was established (from Metropolitan Archdiocese of Guadalajara and became suffragan of Guadalajara) |
| 1972.03.25 |  Tanzania | Diocese of Singida was established (from Metropolitan Archdiocese of Tabora, Diocese of Dodoma, Diocese of Mbeya and Diocese of Mbulu and became suffragan of Tabora) |
| 1972.04.20 |  Haiti | Diocese of Hinche was established (from Diocese of Cap-Haïtien and Diocese of Les Gonaïves and became suffragan of Port-au-Prince) |
| 1972.04.20 | Haiti | Diocese of Jérémie was established (from Diocese of Les Cayes and became suffragan of Port-au-Prince) |
| 1972.05.13 |  Tonga | Diocese of Tonga lost territory to Diocese of Rarotonga |
| 1972.05.16 |  Venezuela | Diocese of San Carlos de Venezuela was established (from Diocese of Valencia and became suffragan of Caracas) |
| 1972.05.22 |  Sri Lanka,  Maldives | Metropolitan Archdiocese of Colombo in Ceylon was renamed as Metropolitan Archdiocese of Colombo |
| 1972.06.14 |  Congo-Kinshasa | Metropolitan Archdiocese of Luluabourg was renamed as Metropolitan Archdiocese of Kananga |
| 1972.06.20 |  Philippines | Diocese of Lipa was promoted as Metropolitan Archdiocese of Lipa (with suffragan sees Lucena and Infanta) |
| 1972.06.28 |  Czechia | Diocese of Hradec Králové lost territory to Metropolitan Archdiocese of Wrocław |
| 1972.06.28 | Czechia | Metropolitan Archdiocese of Olomouc lost territory to Diocese of Opole |
| 1972.06.28 | Czechia | Metropolitan Archdiocese of Praha lost territory to Metropolitan Archdiocese of Wrocław |
| 1972.06.28 |  Germany | Apostolic Administration of Görlitz was established (from Metropolitan Archdiocese of Wrocław) |
| 1972.06.28 | Germany | Diocese of Meißen lost territory to Metropolitan Archdiocese of Wrocław |
| 1972.06.28 |  Kenya | Diocese of Eldoret lost territory to Diocese of Nakuru |
| 1972.06.28 |  Poland | Diocese of Gorzów was established (from Metropolitan Archdiocese of Wrocław and Diocese of Berlin, from the suppressed Territorial Prelature of Piła and became suffragan of Wrocław) |
| 1972.06.28 | Poland | Diocese of Koszalin–Kołobrzeg was restored (from Diocese of Berlin, from the suppressed Territorial Prelature of Piła and became suffragan of Gniezno) |
| 1972.06.28 | Poland | Apostolic Administration of Upper Silesia was promoted as Diocese of Opole (gained territory from Metropolitan Archdiocese of Olomouc and Metropolitan Archdiocese of Wrocław and became suffragan of Wrocław) |
| 1972.06.28 | Poland | Territorial Prelature of Piła was suppressed (to establish Diocese of Gorzów and Diocese of Koszalin–Kołobrzeg) |
| 1972.06.28 | Poland | Diocese of Szczecin–Kamień was restored (from Diocese of Berlin and became suffragan of Gniezno) |
| 1972.06.28 | Poland | Metropolitan Archdiocese of Wrocław lost territory to Diocese of Opole |
| 1972.07.24 |  Colombia | Diocese of Garzón–Neiva was renamed as Diocese of Garzón (lost territory to establish Diocese of Neiva) |
| 1972.07.24 | Colombia | Diocese of Neiva was restored (from Diocese of Garzón–Neiva and became suffragan of Popayán) |
| 1972.07.30 |  Nigeria | Diocese of Ado-Ekiti was established (from Diocese of Ondo) |
| 1972.08.15 | Italy | Archdiocese of Ancona e Umana was promoted as Metropolitan Archdiocese of Ancona e Umana (with suffragan sees Jesi and Osimo) |
| 1972.08.15 | Italy | Archdiocese of L’Aquila was promoted as Metropolitan Archdiocese of L’Aquila (with suffragan sees Marsi and Sulmona) |
| 1972.08.15 | Italy | Archdiocese of Perugia was promoted as Metropolitan Archdiocese of Perugia (with suffragan sees Assisi, Città della Pieve, Città di Castello, Foligno, Gubbio and Nocera Umbra–Gualdo Tadino) |
| 1972.08.22 |  Chad | Diocese of Fort-Archambault was renamed as Diocese of Sarh |
| 1972.08.22 | Congo-Kinshasa | Diocese of Baudouinville was renamed as Diocese of Kalemie–Kirungu |
| 1972.08.24 | Congo-Kinshasa | Diocese of Mweka lost territory to Metropolitan Archdiocese of Kananga |
| 1972.09.25 | Italy | Diocese of Cava was renamed as Diocese of Cava de’ Tirreni |
| 1972.10.08 | Mexico | Territorial Prelature of Huautla was established (from Metropolitan Archdiocese of Antequera and became suffragan of Antequera) |
| 1972.11.16 |  South Africa | Apostolic Prefecture of Louis Trichardt was promoted as Diocese of Louis Trichardt–Tzaneen (became suffragan of Pretoria) |
| 1972.12.11 | Nigeria | Diocese of Ado-Ekiti was renamed as Diocese of Ekiti (became suffragan of Lagos) |
| 1972.12.13 |  USA | Diocese of Oklahoma City–Tulsa was promoted as Metropolitan Archdiocese of Oklahoma City (with suffragan sees Little Rock and Tulsa and lost territory to establish Diocese of Tulsa) |
| 1972.12.13 | USA | Diocese of Tulsa was established (from Diocese of Oklahoma City–Tulsa and became suffragan of Oklahoma City) |
| 1972.12.18 |  Japan | Apostolic Administration of Okinawa and the Southern Islands 琉球列島 was promoted as Diocese of Naha 那覇 |
| 1972.12.18 |  Malaysia | Diocese of Kuala Lumpur was promoted as Metropolitan Archdiocese of Kuala Lumpur (with suffragan sees Malacca–Johor and Penang) |
| 1972.12.18 | Malaysia | Metropolitan Archdiocese of Malacca–Singapore was demoted as Diocese of Malacca–Johor (lost territory to establish Archdiocese of Singapore and became suffragan of Kuala Lumpur) |
| 1972.12.18 |  Singapore | Archdiocese of Singapore was established (from Metropolitan Archdiocese of Malacca–Singapore and without ecclesiastical province) |
| 1972.12.18 | Sri Lanka | Diocese of Badulla was established (from Diocese of Kandy and became suffragan of Colombo) |
| 1972.12.18 | Tanzania | Territorial Abbacy of Ndanda was promoted as Diocese of Mtwara (became suffragan of Dar-es-Salaam) |
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