| Unknown |
Titular Episcopal See of Celene was established |
| 47 |
Diocese of Acci was established |
| 100 |
Diocese of Cartagena was established |
| 100 |
Diocese of Iliturgi was established |
| 100 |
Diocese of Italica was established |
| 100 |
Diocese of Lugo was established |
| 100 |
Diocese of Toledo (Mozarabic Rite) was established |
| 100 |
Diocese of Écija was established |
| 200 |
Diocese of Astorga was established |
| 200 |
Diocese of Italica was suppressed |
| 250 |
Diocese of Emerita Augusta was established |
| 250 |
Diocese of Iliturgi was suppressed (to establish Diocese of Tucci) |
| 250 |
Diocese of León was established |
| 250 |
Diocese of Sevilla was established |
| 250 |
Diocese of Tarragona was established |
| 250 |
Diocese of Tucci was established (from the suppressed Diocese of Iliturgi) |
| 250 |
Diocese of Zaragoza was established |
| 280 |
Diocese of Málaga was established |
| 300 |
Diocese of Auca was established |
| 300 |
Diocese of Basti was established |
| 300 |
Diocese of Córdoba was established |
| 300 |
Diocese of Egabro was established |
| 300 |
Diocese of Elvira was established |
| 300 |
Diocese of Palencia was established |
| 300 |
Diocese of Urci was established |
| 310 |
Diocese of León was suppressed (to Diocese of Astorga) |
| 325 |
Diocese of Cartagena was promoted as Metropolitan Archdiocese of Cartagena |
| 350 |
Diocese of Cástulo was established (from Diocese of Tucci) |
| 350 |
Diocese of Emerita Augusta was promoted as Metropolitan Archdiocese of Emerita Augusta (with suffragan see Ossonoba) |
| 350 |
Diocese of Mentesa was established |
| 380 |
Diocese of Ávila was established (became suffragan of Emerita Augusta) |
| 400 |
Diocese of Barcelona was established |
| 400 |
Diocese of Complutum was established (from Diocese of Toledo) |
| 400 |
Diocese of Cástulo was suppressed (to Diocese of Tucci) |
| 400 |
Diocese of Gerona was established |
| 400 |
Diocese of Menorca was established |
| 400 |
Diocese of Sevilla was promoted as Metropolitan Archdiocese of Sevilla (with suffragan see Córdoba) |
| 400 |
Diocese of Tortosa was established |
| 449 |
Diocese of Tarazona was established |
| 450 |
Diocese of Egara was established (from Diocese of Barcelona) |
| 450 |
Diocese of Ibiza was established |
| 450 |
Diocese of Mallorca was established |
| 463 |
Diocese of Calahorra was established |
| 470 |
Diocese of Tarragona was promoted as Metropolitan Archdiocese of Tarragona (with suffragan sees Auca, Calahorra, Gerona and Tarazona) |
| 500 |
Diocese of Ampurias was established |
| 500 |
Diocese of Coria was established |
| 500 |
Diocese of Iria Flavia was established (became suffragan of Braga) |
| 500 |
Diocese of Lérida was established (became suffragan of Tarragona) |
| 500 |
Diocese of Ourense was established |
| 500 |
Diocese of Pamplona was established (became suffragan of Tarragona) |
| 500 |
Diocese of Urgell was established |
| 500 |
Diocese of Valeria was established |
| 500 |
Diocese of Vergi was established |
| 500 |
Diocese of Vic was established (became suffragan of Tarragona) |
| 527 |
Diocese of Segovia was established (from Diocese of Palencia) |
| 527 |
Diocese of Valencia was established (became suffragan of Tarragona) |
| 530 |
Diocese of Toledo (Mozarabic Rite) was promoted as Metropolitan Archdiocese of Toledo |
| 533 |
Diocese of Osca was established |
| 550 |
Diocese of Oreto was established |
| 569 |
Diocese of Lugo was promoted as Metropolitan Archdiocese of Lugo (with suffragan sees Iria Flavia, Ourense and Tui) |
| 569 |
Diocese of Tui was established (from Metropolitan Archdiocese of Braga and became suffragan of Lugo) |
| 572 |
Diocese of Bretoña was established (from Metropolitan Archdiocese of Lugo and became suffragan of Lugo) |
| 580 |
Diocese of Salamanca was established (became suffragan of Emerita Augusta) |
| 580 |
Diocese of Segorbe was established |
| 589 |
Diocese of Sigüenza was established (became suffragan of Toledo) |
| 590 |
Diocese of Osma was established (became suffragan of Toledo) |
| 600 |
Diocese of Asidonia was established (became suffragan of Sevilla) |
| 623 |
Metropolitan Archdiocese of Cartagena was renamed as Metropolitan Archdiocese of Cartagena–Bigastro |
| 681 |
Metropolitan Archdiocese of Cartagena–Bigastro was demoted as Diocese of Cartagena–Bigastro |
| 693 |
Diocese of Palencia was suppressed |
| 700 |
Diocese of Egara was suppressed (to Diocese of Barcelona) |
| 700 |
Diocese of Ibiza was suppressed |
| 700 |
Diocese of Mallorca was suppressed |
| 700 |
Diocese of Oreto was suppressed |
| 700 |
Diocese of Segorbe was suppressed |
| 700 |
Diocese of Tarazona was suppressed |
| 700 |
Diocese of Tortosa was suppressed |
| 700 |
Diocese of Tui was suppressed |
| 700 |
Diocese of Ávila was suppressed |
| 711 |
Diocese of Complutum was renamed as Diocese of Complutum |
| 711 |
Metropolitan Archdiocese of Tarragona was suppressed |
| 711 |
Diocese of Valeria was suppressed |
| 711 |
Diocese of Vergi was suppressed |
| 712 |
Diocese of Salamanca was suppressed |
| 713 |
Diocese of Astorga was suppressed |
| 713 |
Metropolitan Archdiocese of Lugo was suppressed |
| 713 |
Diocese of Vic was suppressed |
| 715 |
Diocese of Ampurias was suppressed (to Diocese of Gerona) |
| 715 |
Diocese of Baeza was established (from the suppressed Diocese of Tucci) |
| 715 |
Diocese of Mentesa was suppressed |
| 715 |
Diocese of Tucci was suppressed (to establish Diocese of Baeza) |
| 716 |
Diocese of Barcelona was suppressed |
| 716 |
Diocese of Bretoña was suppressed |
| 716 |
Diocese of Ourense was suppressed (to Metropolitan Archdiocese of Lugo) |
| 741 |
Diocese of Acci was suppressed |
| 745 |
Metropolitan Archdiocese of Lugo was restored (with suffragan see Iria Flavia) |
| 747 |
Diocese of Astorga was restored |
| 790 |
Diocese of León was restored (from Diocese of Astorga) |
| 800 |
Diocese of Menorca was suppressed |
| 800 |
Diocese of Valpuesta was established |
| 800 |
Diocese of Valpuesta was established |
| 801 |
Diocese of Barcelona was restored |
| 810 |
Diocese of Sigüenza was suppressed |
| 811 |
Diocese of Oviedo was established (from Metropolitan Archdiocese of Lugo) |
| 850 |
Diocese of Astorga lost territory to Diocese of León |
| 866 |
Diocese of San Martiño de Mondoñedo was established (from Metropolitan Archdiocese of Lugo and Diocese of Oviedo and became suffragan of Lugo) |
| 870 |
Diocese of Armentia was established (from Diocese of Calahorra) |
| 870 |
Diocese of Álava was established (from Diocese of Calahorra) |
| 886 |
Diocese of Ourense was restored (from Metropolitan Archdiocese of Lugo and became suffragan of Lugo) |
| 886 |
Diocese of Vic was restored (became suffragan of Narbonne) |
| 887 |
Diocese of Lérida was suppressed (to establish Diocese of Pallars–Ribagorça) |
| 887 |
Diocese of Osca was suppressed (to Diocese of Pamplona and to establish Diocese of Pallars–Ribagorça) |
| 887 |
Diocese of Pallars–Ribagorça was established (from Diocese of Urgell and from the suppressed Diocese of Lérida and Diocese of Osca) |
| 890 |
Diocese of Tui was restored (became suffragan of Lugo) |
| 900 |
Diocese of Badajoz was established (from the suppressed Metropolitan Archdiocese of Emerita Augusta) |
| 900 |
Diocese of Baeza was suppressed |
| 900 |
Diocese of Egabro was suppressed |
| 900 |
Metropolitan Archdiocese of Emerita Augusta was suppressed (to establish Diocese of Badajoz) |
| 900 |
Diocese of Zamora was established |
| 920 |
Diocese of Osma was suppressed |
| 922 |
Diocese of Sasabe was established (from Diocese of Pamplona) |
| 923 |
Diocese of Calahorra was suppressed (to establish Diocese of Nájera) |
| 923 |
Diocese of Nájera was established (from the suppressed Diocese of Calahorra) |
| 950 |
Diocese of Segovia was suppressed |
| 950 |
Diocese of Urci was suppressed |
| 953 |
Diocese of Simancas was established (from Diocese of Astorga and Diocese of León) |
| 956 |
Diocese of Pallars–Ribagorça was renamed as Diocese of Roda (gained territory from Diocese of Urgell) |
| 956 |
Archdiocese of Tarragona was restored (became suffragan of Narbonne) |
| 956 |
Diocese of Urgell lost territory to Diocese of Roda |
| 974 |
Diocese of Simancas was suppressed (to Diocese of Astorga and Diocese of León) |
| 989 |
Diocese of Zamora was suppressed |
| 1000 |
Diocese of Basti was suppressed |
| 1000 |
Diocese of Cartagena–Bigastro was suppressed |
| 1000 |
Diocese of Coria was suppressed |
| 1000 |
Diocese of Córdoba was suppressed |
| 1000 |
Diocese of Écija was suppressed |
| 1010 |
Diocese of Badajoz was suppressed |
| 1024 |
Diocese of Tui was suppressed (to Diocese of Iria Flavia) |
| 1030 |
Diocese of Pamplona lost territory to Diocese of Bayonne |
| 1034 |
Diocese of Palencia was restored (became suffragan of Toledo) |
| 1035 |
Diocese of León exchanged territory with Diocese of Palencia |
| 1035 |
Diocese of Palencia exchanged territory with Diocese of León |
| 1040 |
Diocese of Roda lost territory to Diocese of Urgell |
| 1059 |
Diocese of León exchanged territory with Diocese of Palencia |
| 1059 |
Diocese of Palencia exchanged territory with Diocese of León |
| 1069 |
Diocese of Tui was restored (from Diocese of Iria Flavia) |
| 1071 |
Metropolitan Archdiocese of Lugo was demoted as Diocese of Lugo (gained territory from Diocese of Oviedo and became suffragan of Braga) |
| 1071 |
Diocese of Oviedo lost territory to Diocese of Lugo |
| 1075 |
Diocese of Auca was suppressed (to establish Diocese of Burgos–Auca) |
| 1075 |
Diocese of Burgos–Auca was established (from the suppressed Diocese of Auca) |
| 1077 |
Diocese of Jaca was established (from the suppressed Diocese of Sasabe) |
| 1077 |
Diocese of Osma lost territory to Diocese of Nájera |
| 1077 |
Diocese of Pamplona lost territory to Diocese of Nájera |
| 1077 |
Diocese of Sasabe was suppressed (to establish Diocese of Jaca) |
| 1087 |
Diocese of Valpuesta was suppressed (to Diocese of Burgos–Auca) |
| 1087 |
Diocese of Valpuesta was suppressed (to Diocese of Burgos–Auca) |
| 1088 |
Diocese of Armentia was suppressed (to Diocese of Nájera) |
| 1088 |
Diocese of Álava was suppressed (to Diocese of Nájera) |
| 1091.06.01 |
Archdiocese of Tarragona was promoted as Metropolitan Archdiocese of Tarragona (with suffragan sees Burgos–Auca, Jaca, Pamplona, Urgell and Vic) |
| 1095.03.14 |
Diocese of Burgos–Auca was renamed as Diocese of Burgos |
| 1095.12.05 |
Diocese of Iria Flavia was suppressed (to establish Diocese of Santiago de Compostela) |
| 1095.12.05 |
Diocese of Santiago de Compostela was established (from the suppressed Diocese of Iria Flavia and became suffragan of Braga) |
| 1098.05.11 |
Diocese of Huesca–Jaca was restored (from the suppressed Diocese of Jaca) |
| 1098.05.11 |
Diocese of Jaca was suppressed (to establish Diocese of Huesca–Jaca) |
| 1099.05.04 |
Diocese of Complutum was suppressed (to Metropolitan Archdiocese of Toledo) |
| 1100 |
Diocese of Osma was restored (became suffragan of Toledo) |
| 1100 |
Diocese of Valencia was suppressed |
| 1100 |
Diocese of Ávila was restored |
| 1101 |
Diocese of Barbastro–Roda was established (from the suppressed Diocese of Roda) |
| 1101 |
Diocese of Roda was suppressed (to establish Diocese of Barbastro–Roda) |
| 1102 |
Diocese of Salamanca was restored (from former Diocese of Caliábria) |
| 1110.01.25 |
Diocese of Segovia was restored |
| 1114 |
Diocese of San Martiño de Mondoñedo was renamed as Diocese of San Martiño de Mondoñedo–Dume (gained territory from the suppressed Diocese of Dume) |
| 1116 |
Diocese of Barbastro–Roda lost territory to Diocese of Huesca–Jaca |
| 1117 |
Diocese of Besalú was established (from Diocese of Gerona and Diocese of Vic) |
| 1118 |
Diocese of Tarazona was restored (became suffragan of Tarragona) |
| 1120 |
Diocese of Besalú was suppressed (to Diocese of Gerona and Diocese of Vic) |
| 1120.02.27 |
Diocese of Santiago de Compostela was promoted as Metropolitan Archdiocese of Santiago de Compostela (with suffragan sees Ávila, Lugo, Ourense, Salamanca, San Martiño de Mondoñedo–Dume, Segovia and Tui) |
| 1121 |
Diocese of Sigüenza was restored (became suffragan of Toledo) |
| 1121 |
Diocese of Zamora was restored (from Diocese of Astorga and became suffragan of Braga) |
| 1133 |
Diocese of Huesca–Jaca lost territory to Diocese of Barbastro–Roda |
| 1139 |
Diocese of Astorga lost territory to Metropolitan Archdiocese of Braga |
| 1143 |
Diocese of Coria was restored (became suffragan of Santiago de Compostela) |
| 1145 |
Diocese of Barbastro–Roda lost territory to Diocese of Huesca–Jaca |
| 1145 |
Metropolitan Archdiocese of Sevilla was suppressed |
| 1145 |
Diocese of Urci was restored |
| 1146 |
Diocese of Asidonia was suppressed |
| 1149 |
Diocese of Barbastro–Roda was suppressed (to Diocese of Huesca–Jaca and to establish Diocese of Lérida) |
| 1149 |
Diocese of Lérida was restored (from the suppressed Diocese of Barbastro–Roda and became suffragan of Tarragona) |
| 1150 |
Diocese of Elvira was suppressed |
| 1151 |
Diocese of Tortosa was restored (became suffragan of Tarragona) |
| 1154 |
Diocese of Vic lost territory to Metropolitan Archdiocese of Tarragona |
| 1160 |
Diocese of Urci was suppressed |
| 1161.02.13 |
Diocese of Ciudad Rodrigo was established (from Diocese of Salamanca and became suffragan of Santiago de Compostela) |
| 1170 |
Diocese of Calahorra was restored (from the suppressed Diocese of Nájera and became suffragan of Tarragona) |
| 1170 |
Diocese of Nájera was suppressed (to establish Diocese of Calahorra) |
| 1172 |
Diocese of Albarracin was established (from former Diocese of Segorbe) |
| 1183.07.05 |
Diocese of Cuenca was established (became suffragan of Toledo) |
| 1189 |
Diocese of Plasencia was established (from Metropolitan Archdiocese of Santiago de Compostela and became suffragan of Santiago de Compostela) |
| 1200 |
Diocese of Málaga was suppressed |
| 1203 |
Diocese of Lérida lost territory to Diocese of Huesca–Jaca |
| 1219 |
Diocese of San Martiño de Mondoñedo–Dume was renamed as Diocese of Mondoñedo (lost territory to Metropolitan Archdiocese of Braga) |
| 1227 |
Diocese of Baeza was restored |
| 1232 |
Diocese of Calahorra was renamed as Diocese of La Calzada |
| 1235 |
Diocese of La Calzada was renamed as Diocese of Calahorra y La Calzada |
| 1236 |
Diocese of Córdoba was restored (from former Diocese of Écija, former Diocese of Egabro, former Diocese of Elvira and former Diocese of Italica) |
| 1237.07.15 |
Diocese of Mallorca was restored (from Diocese of Barcelona) |
| 1238 |
Diocese of Segorbe was restored (from Diocese of Albarracin) |
| 1238.10.10 |
Diocese of Valencia was restored (became suffragan of Tarragona) |
| 1245 |
Diocese of Segorbe exchanged territory with Diocese of Valencia |
| 1245 |
Diocese of Valencia exchanged territory with Diocese of Segorbe |
| 1249 |
Diocese of Baeza was suppressed (to establish Diocese of Jaén) |
| 1249 |
Diocese of Jaén was established (from the suppressed Diocese of Baeza) |
| 1250.06.25 |
Diocese of Barcelona lost territory to Diocese of Mallorca |
| 1250.07.31 |
Diocese of Cartagena was restored (without ecclesiastical province) |
| 1251 |
Metropolitan Archdiocese of Sevilla was restored (with suffragan see Córdoba) |
| 1255 |
Diocese of Badajoz was restored (from Metropolitan Archdiocese of Santiago de Compostela and became suffragan of Santiago de Compostela) |
| 1258.03.18 |
Diocese of Albarracin was suppressed (to Diocese of Segorbe–Albarracín) |
| 1258.03.18 |
Diocese of Segorbe was renamed as Diocese of Segorbe–Albarracín (gained territory from the suppressed Diocese of Albarracin) |
| 1263.08.21 |
Diocese of Cádiz was established (from former Diocese of Asidonia and became suffragan of Sevilla) |
| 1306 |
Titular Episcopal See of Baza was restored |
| 1318.06.14 |
Diocese of Zaragoza was promoted as Metropolitan Archdiocese of Zaragoza (with suffragan sees Calahorra y La Calzada, Huesca–Jaca, Pamplona and Tarazona) |
| 1344 |
Diocese of Algeciras was established (from Diocese of Cádiz) |
| 1347 |
Diocese of Valencia lost territory to Diocese of Segorbe–Albarracín |
| 1351.11.07 |
Diocese of Islas de la Fortuna was established (from Diocese of Mallorca and became suffragan of Sevilla) |
| 1369 |
Diocese of Islas de la Fortuna was renamed as Diocese of Telde |
| 1400 |
Titular Episcopal See of Guadix was established (from former Diocese of Acci) |
| 1403.07.04 |
Diocese of Ciudad Rodrigo lost territory to Diocese of Lamego |
| 1404.07.07 |
Diocese of Rubicón was established (from Diocese of Telde and became suffragan of Sevilla) |
| 1417.04.04 |
Diocese of Ceuta was established (from Diocese of Marocco and became suffragan of Lisboa) |
| 1421 |
Diocese of Tui lost territory to Diocese of Ceuta |
| 1424.11.20 |
Diocese of Fuerteventura was established (from Diocese of Rubicón and became suffragan of Sevilla) |
| 1433 |
Diocese of Fuerteventura was suppressed (to Diocese of Rubicón) |
| 1437 |
Titular Episcopal See of Granada was established (from former Diocese of Elvira) |
| 1441 |
Diocese of Telde was suppressed |
| 1442 |
Diocese of Orihuela was established (from Diocese of Cartagena) |
| 1443.10.11 |
Diocese of Orihuela was suppressed (to Diocese of Cartagena) |
| 1485 |
Diocese of Islas Canarias was established (from the suppressed Diocese of Rubicón and became suffragan of Sevilla) |
| 1485 |
Diocese of Rubicón was suppressed (to establish Diocese of Islas Canarias) |
| 1486.08.04 |
Diocese of Málaga was restored |
| 1492.05.21 |
Diocese of Almería was established (from Diocese of Cartagena and former Diocese of Urci) |
| 1492.05.21 |
Titular Episcopal See of Baza was suppressed (to establish Diocese of Guadix–Baza) |
| 1492.05.21 |
Diocese of Guadix–Baza was restored (from Diocese of Cartagena, from the suppressed Titular Episcopal See of Baza and became suffragan of Toledo) |
| 1492.07.09 |
Diocese of Valencia was promoted as Metropolitan Archdiocese of Valencia (with suffragan sees Cartagena, Mallorca and Segorbe–Albarracín) |
| 1492.12.10 |
Metropolitan Archdiocese of Granada was restored (with suffragan sees Almería, Guadix–Baza, Jaén and Málaga) |
| 1510.05.13 |
Diocese of Orihuela was restored (from Diocese of Cartagena and became suffragan of Valencia) |
| 1512 |
Diocese of Ceuta lost territory to Metropolitan Archdiocese of Braga |
| 1518.04.01 |
Diocese of Orihuela was suppressed (to Diocese of Cartagena) |
| 1524.05.11 |
Titular Patriarchal See of Indias Occidentales was established |
| 1564.07.14 |
Diocese of Orihuela was restored (from Diocese of Cartagena and became suffragan of Valencia) |
| 1570.06.09 |
Diocese of Ceuta was renamed as Diocese of Ceuta y Tánger (gained territory from the suppressed Diocese of Marruecos and lost territory to establish Diocese of Elvas) |
| 1571.06.18 |
Diocese of Huesca–Jaca was renamed as Diocese of Huesca (lost territory to establish Diocese of Jaca) |
| 1571.06.18 |
Diocese of Jaca was restored (from Diocese of Huesca–Jaca and became suffragan of Zaragoza) |
| 1573.02.09 |
Diocese of Barbastro was restored (from Diocese of Huesca and Diocese of Lérida and became suffragan of Zaragoza) |
| 1574.10.22 |
Diocese of Burgos was promoted as Metropolitan Archdiocese of Burgos (with suffragan sees Calahorra y La Calzada and Pamplona) |
| 1577.07.21 |
Diocese of Albarracin was restored (from Diocese of Segorbe–Albarracín) |
| 1577.07.21 |
Diocese of Segorbe–Albarracín was renamed as Diocese of Segorbe (lost territory to establish Diocese of Albarracin) |
| 1577.07.31 |
Diocese of Teruel was established (from Metropolitan Archdiocese of Zaragoza and became suffragan of Zaragoza) |
| 1593.07.19 |
Diocese of Solsona was established (from Diocese of Urgell and Diocese of Vic and became suffragan of Tarragona) |
| 1595.09.25 |
Diocese of Valladolid was established (from Diocese of Palencia and became suffragan of Burgos) |
| 1600 |
Military Vicariate of Spain was established |
| 1630.11.28 |
Diocese of Ceuta y Tánger was renamed as Diocese of Ceuta (lost territory to establish Apostolic Prefecture of Marruecos) |
| 1754.12.12 |
Diocese of Santander was established (from Metropolitan Archdiocese of Burgos and Diocese of Oviedo and became suffragan of Burgos) |
| 1782.04.30 |
Diocese of Ibiza was restored (from Diocese of Mallorca and became suffragan of Tarragona) |
| 1783.03.27 |
Diocese of Tudela was established (from Diocese of Pamplona and Diocese of Tarazona and became suffragan of Burgos) |
| 1785 |
Diocese of Pamplona lost territory to Diocese of Jaca |
| 1795.07.23 |
Diocese of Menorca was restored (from Diocese of Mallorca and became suffragan of Valencia) |
| 1803 |
Diocese of Urgell lost territory to Diocese of Carcassonne |
| 1819.02.01 |
Diocese of San Cristóbal de La Laguna was established (from Diocese of Islas Canarias and became suffragan of Sevilla) |
| 1851 |
Diocese of Algeciras was suppressed (to Diocese of Cádiz) |
| 1851 |
Diocese of Guadix–Baza was renamed as Diocese of Guadix |
| 1851 |
Diocese of Ibiza was suppressed (to Diocese of Mallorca) |
| 1851.09.05 |
Diocese of Pamplona was renamed as Diocese of Pamplona–Tudela (gained territory from the suppressed Diocese of Tudela) |
| 1851.09.05 |
Diocese of Tudela was suppressed (to Diocese of Pamplona–Tudela) |
| 1857.07.04 |
Diocese of Valladolid was promoted as Metropolitan Archdiocese of Valladolid (with suffragan sees Astorga, Ávila, Ciudad Rodrigo, Salamanca, Segovia and Zamora) |
| 1861.09.08 |
Diocese of Vitoria was established (from Metropolitan Archdiocese of Burgos, Diocese of Calahorra y La Calzada, Diocese of Pamplona–Tudela and Diocese of Santander and became suffragan of Burgos) |
| 1874 |
Diocese of Vic lost territory to Diocese of Barcelona |
| 1875.11.18 |
Priory nullius of Ciudad Real was established (from Metropolitan Archdiocese of Toledo and Diocese of Córdoba and without ecclesiastical province) |
| 1885.03.07 |
Diocese of Madrid y Alcalá de Henares was established (from Metropolitan Archdiocese of Toledo and became suffragan of Toledo) |
| 1889.07.17 |
Diocese of Pamplona–Tudela was renamed as Diocese of Pamplona (lost territory to establish Diocese of Tudela) |
| 1889.07.17 |
Diocese of Tudela was restored (from Diocese of Pamplona–Tudela and became suffragan of Zaragoza) |
| 1927 |
Apostolic Administration of Ibiza was restored (from Diocese of Mallorca) |
| 1933.03.30 |
Military Vicariate of Spain was suppressed |
| 1933.04.21 |
Diocese of Ceuta was suppressed (to Diocese of Cádiz y Ceuta) |
| 1933.04.21 |
Diocese of Cádiz was renamed as Diocese of Cádiz y Ceuta (gained territory from the suppressed Diocese of Ceuta) |
| 1949 |
Apostolic Administration of Ibiza was promoted as Diocese of Ibiza (became suffragan of Valencia) |
| 1949.11.02 |
Diocese of Albacete was established (from Diocese of Cartagena, Diocese of Cuenca and Diocese of Orihuela and became suffragan of Valencia) |
| 1949.11.02 |
Diocese of Bilbao was established (from Diocese of Santander and Diocese of Vitoria and became suffragan of Burgos) |
| 1949.11.02 |
Diocese of Calahorra y La Calzada lost territory to Diocese of Vitoria |
| 1949.11.02 |
Diocese of San Sebastián was established (from Diocese of Vitoria and became suffragan of Burgos) |
| 1950.08.05 |
Military Vicariate of Spain was restored |
| 1953 |
Metropolitan Archdiocese of Burgos lost territory to Diocese of Segovia |
| 1953.01.12 |
Metropolitan Archdiocese of Granada lost territory to Diocese of Almería |
| 1953.10.22 |
Diocese of Huelva was established (from Metropolitan Archdiocese of Sevilla and became suffragan of Sevilla) |
| 1954 |
Diocese of Segovia lost territory to Metropolitan Archdiocese of Burgos |
| 1954 |
Metropolitan Archdiocese of Toledo (Mozarabic Rite) exchanged territory with Diocese of Ávila |
| 1954 |
Diocese of Ávila lost territory to Metropolitan Archdiocese of Valladolid |
| 1954.04.23 |
Metropolitan Archdiocese of Toledo (Mozarabic Rite) lost territory to Diocese of Jaén |
| 1954.06.25 |
Diocese of Cartagena lost territory to Diocese of Orihuela |
| 1954.10.17 |
Diocese of Astorga lost territory to Diocese of León and Diocese of Zamora |
| 1954.10.17 |
Metropolitan Archdiocese of Burgos lost territory to Diocese of Santander |
| 1954.10.17 |
Diocese of León lost territory to Metropolitan Archdiocese of Valladolid, Diocese of Santander and Diocese of Zamora |
| 1954.10.17 |
Diocese of Lugo exchanged territory with Diocese of Astorga, Diocese of Mondoñedo and Diocese of Ourense |
| 1954.10.17 |
Diocese of Mondoñedo lost territory to Metropolitan Archdiocese of Santiago de Compostela |
| 1954.10.17 |
Diocese of Ourense lost territory to Diocese of Astorga |
| 1954.10.17 |
Diocese of Oviedo lost territory to Diocese of Astorga, Diocese of León, Diocese of Lugo and Diocese of Mondoñedo |
| 1954.10.17 |
Diocese of Palencia lost territory to Metropolitan Archdiocese of Valladolid and Diocese of Santander |
| 1954.10.17 |
Diocese of Santander lost territory to Diocese of Oviedo |
| 1954.10.17 |
Metropolitan Archdiocese of Santiago de Compostela lost territory to Diocese of Ourense |
| 1954.10.17 |
Diocese of Tui lost territory to Diocese of Ourense |
| 1954.10.27 |
Diocese of Oviedo was promoted as Metropolitan Archdiocese of Oviedo (with suffragan sees Astorga, León and Santander) |
| 1955.09.02 |
Metropolitan Archdiocese of Burgos exchanged territory with Diocese of Osma |
| 1955.09.02 |
Diocese of Calahorra y La Calzada lost territory to Diocese of Osma |
| 1955.09.02 |
Diocese of Cuenca lost territory to Metropolitan Archdiocese of Toledo and Diocese of Sigüenza |
| 1955.09.02 |
Diocese of Huesca lost territory to Metropolitan Archdiocese of Zaragoza and Diocese of Jaca |
| 1955.09.02 |
Diocese of Lérida lost territory to Metropolitan Archdiocese of Zaragoza and Diocese of Barbastro |
| 1955.09.02 |
Diocese of Osma lost territory to Diocese of Segovia |
| 1955.09.02 |
Diocese of Segovia lost territory to Metropolitan Archdiocese of Valladolid |
| 1955.09.02 |
Diocese of Sigüenza lost territory to Metropolitan Archdiocese of Zaragoza, Diocese of Osma, Diocese of Segovia and Diocese of Tarazona |
| 1955.09.02 |
Diocese of Tarazona lost territory to Diocese of Calahorra y La Calzada, Diocese of Osma and Diocese of Pamplona |
| 1955.09.02 |
Diocese of Teruel lost territory to Diocese of Cuenca, Diocese of Segorbe, Diocese of Sigüenza and Diocese of Tortosa |
| 1955.09.02 |
Metropolitan Archdiocese of Toledo (Mozarabic Rite) lost territory to Diocese of Sigüenza |
| 1955.09.02 |
Diocese of Tortosa lost territory to Diocese of Lérida |
| 1955.09.02 |
Diocese of Urgell lost territory to Diocese of Barbastro |
| 1955.09.02 |
Metropolitan Archdiocese of Zaragoza lost territory to Diocese of Tarazona and Diocese of Teruel |
| 1956.01.01 |
Diocese of Huesca lost territory to Diocese of Jaca |
| 1956.08.11 |
Diocese of Pamplona was promoted as Metropolitan Archdiocese of Pamplona (with suffragan sees Calahorra y La Calzada, Jaca, San Sebastián and Tudela and lost territory to Diocese of Calahorra y La Calzada) |
| 1956.09.19 |
Diocese of Astorga lost territory to Diocese of León |
| 1957.04.09 |
Diocese of Coria was renamed as Diocese of Coria–Cáceres |
| 1957.06.06 |
Diocese of Barcelona lost territory to Metropolitan Archdiocese of Tarragona and Diocese of Vic |
| 1957.06.06 |
Diocese of Cuenca lost territory to Metropolitan Archdiocese of Valencia |
| 1957.06.06 |
Diocese of Gerona lost territory to Diocese of Vic |
| 1957.06.06 |
Diocese of Lérida lost territory to Diocese of Solsona |
| 1957.06.06 |
Diocese of Orihuela exchanged territory with Metropolitan Archdiocese of Valencia |
| 1957.06.06 |
Diocese of Segorbe exchanged territory with Metropolitan Archdiocese of Valencia |
| 1957.06.06 |
Diocese of Solsona exchanged territory with Diocese of Vic |
| 1957.06.06 |
Metropolitan Archdiocese of Valencia exchanged territory with Diocese of Orihuela and Diocese of Segorbe |
| 1957.06.06 |
Diocese of Vic lost territory to Metropolitan Archdiocese of Tarragona |
| 1957.07.10 |
Diocese of Cartagena lost territory to Diocese of Almería |
| 1957.07.10 |
Metropolitan Archdiocese of Granada lost territory to Diocese of Almería |
| 1957.07.10 |
Diocese of Guadix lost territory to Diocese of Almería |
| 1957.07.10 |
Diocese of Málaga lost territory to Metropolitan Archdiocese of Granada |
| 1958.04.30 |
Diocese of Badajoz exchanged territory with Diocese of Coria–Cáceres |
| 1958.04.30 |
Diocese of Coria–Cáceres exchanged territory with Diocese of Badajoz |
| 1958.07.20 |
Diocese of Ciudad Rodrigo lost territory to Diocese of Coria–Cáceres |
| 1958.07.20 |
Diocese of Coria–Cáceres lost territory to Diocese of Salamanca |
| 1958.07.20 |
Diocese of Córdoba lost territory to Diocese of Badajoz and Diocese of Málaga |
| 1958.07.20 |
Diocese of Plasencia lost territory to Diocese of Ávila and Diocese of Coria–Cáceres |
| 1958.07.20 |
Diocese of Salamanca lost territory to Diocese of Ciudad Rodrigo and Diocese of Plasencia |
| 1958.07.20 |
Metropolitan Archdiocese of Sevilla lost territory to Diocese of Córdoba |
| 1959.03.09 |
Diocese of Calahorra y La Calzada was renamed as Diocese of Calahorra y La Calzada–Logroño |
| 1959.03.09 |
Diocese of Mondoñedo was renamed as Diocese of Mondoñedo–Ferrol |
| 1959.03.09 |
Diocese of Orihuela was renamed as Diocese of Orihuela–Alicante |
| 1959.03.09 |
Diocese of Osma was renamed as Diocese of Osma–Soria |
| 1959.03.09 |
Diocese of Sigüenza was renamed as Diocese of Sigüenza–Guadalajara |
| 1959.03.09 |
Diocese of Tui was renamed as Diocese of Tui–Vigo |
| 1959.12.21 |
Diocese of Astorga exchanged territory with Diocese of Ourense |
| 1959.12.21 |
Diocese of Ourense exchanged territory with Diocese of Astorga |
| 1960.05.31 |
Diocese of Segorbe was renamed as Diocese of Segorbe–Castellón de la Plana (gained territory from Diocese of Tortosa and lost territory to Metropolitan Archdiocese of Valencia) |
| 1960.05.31 |
Diocese of Tortosa lost territory to Diocese of Segorbe–Castellón de la Plana |
| 1964.03.25 |
Diocese of Barcelona was promoted as Archdiocese of Barcelona |
| 1964.03.25 |
Diocese of Madrid y Alcalá de Henares was promoted as Archdiocese of Madrid (without ecclesiastical province) |
| 1966.07.25 |
Metropolitan Archdiocese of Toledo (Mozarabic Rite) lost territory to Diocese of Albacete |
| 1968 |
Titular Episcopal See of Elo was established |
| 1969 |
Titular Episcopal See of Abula was established |
| 1969 |
Titular Episcopal See of Acci was restored |
| 1969 |
Titular Episcopal See of Algeciras was restored |
| 1969 |
Titular Episcopal See of Amaia was established |
| 1969 |
Titular Episcopal See of Arcavica was established |
| 1969 |
Titular Episcopal See of Asidonia was restored |
| 1969 |
Titular Episcopal See of Auca was restored |
| 1969 |
Titular Episcopal See of Baeza was restored |
| 1969 |
Titular Episcopal See of Baza was restored |
| 1969 |
Titular Episcopal See of Besalú was restored |
| 1969 |
Titular Episcopal See of Bigastro was established |
| 1969 |
Titular Episcopal See of Bretoña was restored |
| 1969 |
Titular Episcopal See of Castulo was restored |
| 1969 |
Titular Episcopal See of Denia was established |
| 1969 |
Titular Episcopal See of Egabro was restored |
| 1969 |
Titular Episcopal See of Egara was restored |
| 1969 |
Titular Episcopal See of Elepla was established |
| 1969 |
Titular Episcopal See of Elicroca was established |
| 1969 |
Titular Metropolitan See of Emerita Augusta was restored |
| 1969 |
Titular Episcopal See of Fuerteventura was restored |
| 1969 |
Titular Episcopal See of Illiberi was restored |
| 1969 |
Titular Episcopal See of Illici was established |
| 1969 |
Titular Episcopal See of Ipagro was established |
| 1969 |
Titular Episcopal See of Iria Flavia was restored |
| 1969 |
Titular Episcopal See of Italica was restored |
| 1969 |
Titular Episcopal See of Mentesa was restored |
| 1969 |
Titular Episcopal See of Naiera was restored |
| 1969 |
Titular Episcopal See of Oreto was restored |
| 1969 |
Titular Episcopal See of Rota was restored |
| 1969 |
Titular Episcopal See of Rotdon was established |
| 1969 |
Titular Episcopal See of Rubicón was restored |
| 1969 |
Titular Episcopal See of Saetabis was established |
| 1969 |
Titular Episcopal See of Sasabe was restored |
| 1969 |
Titular Episcopal See of Segia was established |
| 1969 |
Titular Episcopal See of Segisama was established |
| 1969 |
Titular Episcopal See of Telde was restored |
| 1969 |
Titular Episcopal See of Tucci was restored |
| 1969 |
Titular Episcopal See of Urci was restored |
| 1969 |
Titular Episcopal See of Ursona was established |
| 1969 |
Titular Episcopal See of Valabria was established |
| 1969 |
Titular Episcopal See of Valeria was restored |
| 1969 |
Titular Episcopal See of Valliposita was restored |
| 1969 |
Titular Episcopal See of Vergi was restored |
| 1969 |
Titular Episcopal See of Álava was restored |
| 1969 |
Titular Episcopal See of Écija was restored |
| 1970 |
Titular Metropolitan See of Emerita Augusta was demoted as Titular Episcopal See of Emerita Augusta |
| 1975 |
Archdiocese of Barcelona lost territory to Diocese of Gerona |
| 1980.02.04 |
Priory nullius of Ciudad Real was promoted as Diocese of Ciudad Real (became suffragan of Toledo) |
| 1980.03.03 |
Titular Episcopal See of Asidonia was suppressed (to establish Diocese of Jerez de la Frontera) |
| 1980.03.03 |
Diocese of Jerez de la Frontera was established (from Metropolitan Archdiocese of Sevilla and Diocese of Cádiz y Ceuta, from the suppressed Titular Episcopal See of Asidonia and became suffragan of Sevilla) |
| 1984.08.11 |
Diocese of Albarracin was suppressed (to Diocese of Teruel y Albarracín) |
| 1984.08.11 |
Metropolitan Archdiocese of Pamplona was renamed as Metropolitan Archdiocese of Pamplona y Tudela (gained territory from the suppressed Diocese of Tudela and lost suffragan see Tudela) |
| 1984.08.11 |
Diocese of Teruel was renamed as Diocese of Teruel y Albarracín (gained territory from the suppressed Diocese of Albarracin) |
| 1984.08.11 |
Diocese of Tudela was suppressed (to Metropolitan Archdiocese of Pamplona y Tudela) |
| 1986 |
Diocese of Tarazona lost territory to Metropolitan Archdiocese of Zaragoza |
| 1986.07.21 |
Military Vicariate of Spain was promoted as Military Ordinariate of Arzobispado Castrense de España |
| 1991.07.23 |
Diocese of Alcalá de Henares was restored (from Archdiocese of Madrid and became suffragan of Madrid) |
| 1991.07.23 |
Diocese of Getafe was established (from Archdiocese of Madrid and became suffragan of Madrid) |
| 1991.07.23 |
Archdiocese of Madrid was promoted as Metropolitan Archdiocese of Madrid (with suffragan sees Alcalá de Henares and Getafe and lost territory to establish Diocese of Alcalá de Henares and Diocese of Getafe) |
| 1992.04.10 |
Diocese of Gerona was renamed as Diocese of Girona |
| 1992.10.31 |
Diocese of Lérida was renamed as Diocese of Lleida |
| 1994.07.28 |
Titular Episcopal See of Emerita Augusta was suppressed (to Metropolitan Archdiocese of Mérida–Badajoz) |
| 1994.07.28 |
Diocese of Badajoz was promoted as Metropolitan Archdiocese of Mérida–Badajoz (with suffragan sees Coria–Cáceres and Plasencia and gained territory from the suppressed Titular Episcopal See of Emerita Augusta) |
| 1995.06.15 |
Diocese of Barbastro was renamed as Diocese of Barbastro–Monzón |
| 1995.09.17 |
Diocese of Lleida lost territory to Diocese of Barbastro–Monzón |
| 1998.07.15 |
Diocese of Lleida lost territory to Diocese of Barbastro–Monzón |
| 2004.06.15 |
Archdiocese of Barcelona was promoted as Metropolitan Archdiocese of Barcelona (with suffragan sees Sant Feliu de Llobregat and Terrassa and lost territory to establish Diocese of Sant Feliu de Llobregat and Diocese of Terrassa) |
| 2004.06.15 |
Diocese of Sant Feliu de Llobregat was established (from Archdiocese of Barcelona and became suffragan of Barcelona) |
| 2004.06.15 |
Diocese of Terrassa was established (from Archdiocese of Barcelona and became suffragan of Barcelona) |
| 2009.01 |
Titular Episcopal See of Iliturgi was restored |
| 2016.06.09 |
Ordinariate of Ordinariato para los fieles de ritos orientales en España (Eastern Rite) was established |
| 2018.01 |
Titular Episcopal See of Ampurias was restored |
| 2018.01 |
Titular Episcopal See of Armentia was restored |
| 2018.01 |
Titular Episcopal See of Valpuesta was restored |
| 2019 |
Titular Episcopal See of Valpuesta was suppressed |
