Date | Country | Change |
| 705 |  England | Diocese of Sherborne was established (from Diocese of Leicester) |
| 711 |  Portugal | Diocese of Aquae Flaviae was suppressed |
| 711 |  Spain | Diocese of Complutum was renamed as Diocese of Complutum |
| 711 | Spain | Metropolitan Archdiocese of Tarragona was suppressed |
| 711 | Spain | Diocese of Valeria was suppressed |
| 711 | Spain | Diocese of Vergi was suppressed |
| 712 | Portugal | Diocese of Aeminium was renamed as Diocese of Colimbria |
| 712 | Spain | Diocese of Salamanca was suppressed |
| 713 | Spain | Diocese of Astorga was suppressed |
| 713 | Spain | Metropolitan Archdiocese of Lugo was suppressed |
| 713 | Spain | Diocese of Vic was suppressed |
| 714 | Portugal | Diocese of Elbora was suppressed |
| 714 | Portugal | Diocese of Lamego was suppressed |
| 715 | Portugal | Diocese of Egitânia was suppressed |
| 715 | Portugal | Diocese of Pax Iulia was suppressed |
| 715 | Spain | Diocese of Ampurias was suppressed (to Diocese of Gerona) |
| 715 | Spain | Diocese of Baeza was established (from the suppressed Diocese of Tucci) |
| 715 | Spain | Diocese of Mentesa was suppressed |
| 715 | Spain | Diocese of Tucci was suppressed (to establish Diocese of Baeza) |
| 716 | Portugal | Diocese of Olisipo was suppressed |
| 716 | Portugal | Diocese of Portucale was suppressed |
| 716 | Spain | Diocese of Barcelona was suppressed |
| 716 | Spain | Diocese of Bretoña was suppressed |
| 716 | Spain | Diocese of Ourense was suppressed (to Metropolitan Archdiocese of Lugo) |
| 718 |  Italy | Abbacy nullius of Montecassino was restored |
| 718 | Portugal | Diocese of Viseu was suppressed |
| 720 |  Belgium | Diocese of Liège was established (from the suppressed Diocese of Maastricht) |
| 720 |  Netherlands | Diocese of Maastricht was suppressed (to establish Diocese of Liège) |
| 730 | Italy | Diocese of Reggio Calabria was promoted as Metropolitan Archdiocese of Reggio Calabria (with suffragan sees Cosenza, Locri, Nicotera, Tauriano, Tropea and Vibo Valentia) |
| 735 | England | Diocese of York was promoted as Metropolitan Archdiocese of York (with suffragan sees Hexham, Lindisfarne and Whithorn) |
| 737 |  Germany | Diocese of Passau was established (from former Metropolitan Archdiocese of Lauriacum) |
| 738 | Germany | Diocese of Augsburg was established |
| 739 |  Austria | Abbacy nullius of Stift Sankt Peter Salzburg was promoted as Diocese of Salzburg (lost territory to establish Diocese of Freising) |
| 739 | Germany | Diocese of Freising was established (from Diocese of Passau and Abbacy nullius of Stift Sankt Peter Salzburg) |
| 739 | Germany | Diocese of Regensburg was established (from Diocese of Passau) |
| 740 | Italy | Diocese of Bisignano was established (from Diocese of Thurio and became suffragan of Reggio Calabria) |
| 740 | Italy | Diocese of Conza was established |
| 740 | Italy | Diocese of Veroli was established (without ecclesiastical province) |
| 740 | Italy | Diocese of Zuglio was suppressed (to Patriarchal See of Aquileia) |
| 741 | Germany | Diocese of Büraburg was established |
| 741 | Germany | Diocese of Neuburg was established |
| 741 | Germany | Diocese of Würzburg was established |
| 741 | Spain | Diocese of Acci was suppressed |
| 743 | Italy | Diocese of Torres was suppressed |
| 743.04.01 | Germany | Diocese of Erfurt was established |
| 744 | Italy | Diocese of Aquino lost territory to Abbacy nullius of Montecassino |
| 744 | Italy | Diocese of Formia lost territory to Abbacy nullius of Montecassino |
| 744 | Italy | Diocese of Teano lost territory to Abbacy nullius of Montecassino |
| 744 | Italy | Diocese of Venafro lost territory to Abbacy nullius of Montecassino |
| 745 | Germany | Diocese of Eichstätt was established |
| 745 | Spain | Metropolitan Archdiocese of Lugo was restored (with suffragan see Iria Flavia) |
| 747 | Spain | Diocese of Astorga was restored |
| 750 | Italy | Diocese of Fausania was suppressed |
| 750 | Italy | Abbacy nullius of Nonantola was established (from Diocese of Modena) |
| 750 | Italy | Diocese of Sala Consilina was suppressed (to Diocese of Pesto) |
| 750 | Italy | Diocese of Suèssola was established |
| 750 | Italy | Diocese of Tre Taverne was restored (from Diocese of Velletri) |
| 750 |  Montenegro | Diocese of Doclea was promoted as Metropolitan Archdiocese of Doclea (with suffragan sees Drivasto, Kotor and Shkodrë) |
| 750 |  Scotland | Diocese of Ross was established |
| 751.11.04 | Germany | Abbacy nullius of Heiligsten Erlöser in Fulda was established |
| 755 | Germany | Diocese of Erfurt was suppressed (to Diocese of Mainz) |
| 760 | Italy | Diocese of Priverno was established (without ecclesiastical province) |
| 760 | Italy | Diocese of Terni was suppressed (to Diocese of Spoleto) |
| 764 | Germany | Abbacy nullius of Ellwangen was established |
| 765 | Germany | Diocese of Büraburg was suppressed |
| 770 | Germany | Diocese of Worms was established |
| 772 | Germany | Diocese of Osnabrück was established |
| 772 | Germany | Diocese of Trier was promoted as Metropolitan Archdiocese of Trier (with suffragan sees Metz, Toul and Verdun) |
| 774 | Italy | Diocese of Olivolo was established (from Diocese of Malamocco and became suffragan of Grado) |
| 775 | Italy | Abbacy nullius of Farfa was established |
| 780 |  France | Diocese of Bayonne was established (from Diocese of Dax and became suffragan of Eauze) |
| 780 | Germany | Diocese of Mainz was promoted as Metropolitan Archdiocese of Mainz (with suffragan sees Augsburg, Eichstätt, Konstanz, Neuburg, Salzburg, Speyer, Strasbourg, Worms and Würzburg) |
| 785 | Italy,  San Marino | Diocese of Montefeltro was established (became suffragan of Ravenna) |
| 787 | England | Diocese of Lichfield was promoted as Metropolitan Archdiocese of Lichfield |
| 787 | Germany | Diocese of Bremen was established |
| 787 | Germany | Diocese of Verden was established (became suffragan of Mainz) |
| 787 | Italy | Diocese of Locri was renamed as Diocese of Santa Ciriaca |
| 790 | Italy | Diocese of Sezze was established (without ecclesiastical province) |
| 790 | Spain | Diocese of León was restored (from Diocese of Astorga) |
| 794 | France | Diocese of Embrun was promoted as Metropolitan Archdiocese of Embrun (with suffragan sees Digne, Glandèves, Nice, Senez and Vence) |
| 794 | France | Diocese of Tarentaise was promoted as Metropolitan Archdiocese of Tarentaise (with suffragan sees Aosta, Saint-Jean-de-Maurienne and Sion) |
| 795 | Germany | Diocese of Köln was promoted as Metropolitan Archdiocese of Köln (with suffragan sees Liège and Osnabrück) |
| 798.04.20 | Austria | Diocese of Salzburg was promoted as Metropolitan Archdiocese of Salzburg (with suffragan sees Brixen, Freising, Neuburg, Passau and Regensburg) |
| 799 | Germany | Diocese of Paderborn was established (became suffragan of Mainz) |
| 800 |  Albania | Diocese of Stephaniacum was established |
| 800 |  Croatia | Diocese of Ston was established (from Diocese of Ragusa) |
| 800 |  Cyprus | Diocese of Amathus was suppressed |
| 800 | Cyprus | Diocese of Soli was suppressed |
| 800 | Germany | Diocese of Münster was established (became suffragan of Köln) |
| 800 |  Greece | Diocese of Cnossus was suppressed |
| 800 |  Iraq | Metropolitan Archdiocese of Babylon (Chaldean Rite) was established (from the suppressed Metropolitan Archdiocese of Seleucia–Ctesifonte) |
| 800 | Iraq | Metropolitan Archdiocese of Seleucia–Ctesifonte (Chaldean Rite) was suppressed (to establish Metropolitan Archdiocese of Babylon) |
| 800 | Italy | Diocese of Cornus was suppressed (to Diocese of Sinis-Tharros) |
| 800 | Italy | Diocese of Equilio was established |
| 800 | Italy | Diocese of Foro Flaminii was suppressed (to Diocese of Foligno) |
| 800 | Italy | Diocese of Genova lost territory to Diocese of Tortona |
| 800 | Italy | Diocese of Gravina was established |
| 800 | Italy | Diocese of Norma was established |
| 800 | Italy | Diocese of Pavia lost territory to Diocese of Tortona |
| 800 | Italy | Diocese of Venafro was suppressed |
| 800 |  Lebanon | Archdiocese of Heliopolis was suppressed |
| 800 | Montenegro | Diocese of Ulcinj was established (became suffragan of Doclea) |
| 800 | Scotland | Diocese of Abernathy was established |
| 800 | Scotland | Diocese of Whithorn was suppressed |
| 800 | Spain | Diocese of Menorca was suppressed |
| 800 | Spain | Diocese of Valpuesta was established |
| 800 | Spain | Diocese of Valpuesta was established |
| 800 |  Turkiye | Diocese of Magyddus was suppressed |
| 800 | Turkiye | Diocese of Polybotus was suppressed |
| 800 | Turkiye | Diocese of Sasima was suppressed |
