The Concordat of 11 June 1817 was a concordat between the kingdom of France and the Holy See, signed on 11 June 1817. Not having been validated, it never came into force in France and so the country remained under the regime outlined in the Concordat of 1801 until the 1905 law on the Separation of the Churches and the State.
Representing Pope Pius VII was Cardinal Ercole Consalvi, the papal Secretary of State. He had already negotiated the 1801 Concordat, and was designated the plenipotentiary for the 1817 negotiations. King Louis XVIII of France chose his favorite, the Ambassador to Rome, the Comte de Blacas, who had previously served as the Prime Minister of France, to negotiate the Concordat of 1817.
The Concordat's introduction (1st article) was a repetition of that of the Concordat of Bologna, but the other articles laid down restrictions on this "re-establishment" of the Concordat of Bologna.
One of the accord's objectives was to increase the number of dioceses in France. Another important article (article 4) stipulated that the dioceses in the kingdom of France suppressed by the bull of the Holy See of 29 November 1801 were to be re-established in such a number as both sides would agree on as the most advantageous for the good of religion.
| Dioceses (**) | Territory | |
| Bouches-du-Rhône (Arrondissement of Aix-en-Provence) | ||
| Fréjus | ||
| Gap | ||
| Albi | Albi | Tarn (arrondissements of Albi and of Gaillac) |
| Castres | Tarn (arrondissements of Castres and of Lavaur) | |
| Rodez | ||
| Arles | ||
| Arles | Bouches-du-Rhône (arrondissement of Arles) | |
| Marseille | Bouches-du-Rhône (arrondissement of Marseille) | |
| Auch | Aire | |
| Auch | ||
| Tarbes | ||
| Avignon | Avignon | Vaucluse (arrondissements of Apt and of Avignon) |
| Orange | Vaucluse (arrondissements of Carpentras and of Orange) | |
| Belley | Ain | |
| Besançon | Doubs, Haute-Saône | |
| Metz | Moselle | |
| Saint-Dié | ||
| Strasbourg | Bas-Rhin, Haut-Rhin | |
| Verdun | ||
| Angoulême | ||
| Charente-Inférieure | ||
| Luçon | ||
| Périgueux | ||
| Le Puy | Haute-Loire | |
| Tulle | ||
| Cambrai | Pas-de-Calais (arrondissements of Arras, of Béthune and of Saint-Pol) | |
| Boulogne | Pas-de-Calais (arrondissements of Boulogne, of Montreuil and of Saint-Omer) | |
| Saône-et-Loire (arrondissements of Autun and of Charolles) | ||
| Chalon-sur-Saône | Saône-et-Loire (arrondissements of Chalon, of Louhans and of Mâcon) | |
| Langres | ||
| Saint-Claude | ||
| Narbonne | Béziers | Hérault (arrondissements of Béziers and of Saint-Pons) |
| Aude (arrondissement of Castelnaudary and, in the arrondissement of Carcassonne, the cantons of Alzonne, of Capendu, of Carcassonne 1 & 2, of Conques, of the Mas-Cabardès, of Peyriac and of Saissac) | ||
| Hérault (arrondissements of Lodève and of Montpellier) | ||
| Narbonne | Auof (arrondissements of Limoux and of Narbonne and, in the arrondissement of Carcassonne, the cantons of Lagrasse, Mouthoumet and of Tuchan) | |
| Nîmes | ||
| Perpignan | ||
| Blois | ||
| Chartres | ||
| Seine | ||
| Reims | ||
| Beauvais | Oise (arrondissements of Beauvais and of Senlis) | |
| Châlons-sur-Marne | Marne (arrondissements of Châlons-sur-Marne, of Épernay, of Sainte-Menehould and of Vitry) | |
| Laon | Aisne (arrondissements of Laon, of Saint-Quentin and of Vervins) | |
| Noyon | Oise (arrondissements of Clermont and of Compiègne) | |
| Reims | Ardennes and Marne (Arrondissement of Reims) | |
| Aisne (arrondissements of Château-Thierry and of Soissons) | ||
| Sens | Auxerre | Yonne (arrondissements of Auxerre, of Avallon and of Tonnerre) |
| Moulins | ||
| Nevers | ||
| Sens | Yonne (arrondissements of Joigny and of Sens) | |
| Toulouse | Montauban | |
| Pamiers | ||
| Haute-Garonne | ||
| Maine-et-Loire | ||
| Ille-et-Vilaine (arrondissements of Montfort, of Redon, of Rennes and of Vitré) | ||
| Saint-Malo | Ille-et-Vilaine (arrondissements of Fougères and of Saint-Malo) | |
| Indre-et-Loire | ||
| Vienne | Isère (arrondissements of Grenoble and of Saint-Marcelin) | |
| Vienne | Isère (arrondissements of La Tour-du-Pin and of Vienne) | |
| Viviers |
(*)In italics, dioceses elevated to the rank of archdioceses.
(**)In bold, dioceses and archdioceses that were foreseen to be created or re-established. Not all of them were.