The Diocese of Toul was a Roman Catholic diocese seated at Toul in present-day France. It existed from 365 until 1824. From 1048 until 1552 (de jure until 1648), it was also a state of the Holy Roman Empire.
The diocese was located at the western edge of the Holy Roman Empire; it was bordered by France, the Duchy of Bar, and the Duchy of Lorraine. It was annexed to France by King Henry II in 1552, and that was recognized by the Holy Roman Empire in the Peace of Westphalia of 1648. It then was part of the province of the Three Bishoprics.
After the Duchy of Lorraine also became part of France in the 18th century, the Diocese of Toul was merged with the Diocese of Nancy into the Diocese of Nancy-Toul.
The Diocese of Toul belonged to the ecclesiastical province of the Archbishop of Trier.
Mansuetus 338–375 (Saint Mansuy), first bishop
Amon c. 400?
Alchas c. 423?
Gelsimus c. 455?
Auspicius c. 478?
Ursus around 490
Aprus (Aper) 500–507
Aladius 508–525?
Trifsorich 525–532
Dulcitius 532?–549
Alodius around 549
Premon
Antimund
Eudolius around 602
Theofred 640–653
Bodo of Toul c. 660
Eborinus around 664
Leudinus 667?–669
Adeotatus 679–680
Ermentheus c. 690?
Magnald c. 695?
Dodo c. 705
Griboald 706–739?
Godo of Toul 739?–756
Jakob 756–767
Borno 775–794
Wannich 794?–813
Frotar 814–846
Arnulf 847–871
Arnald 872–894
Ludhelm 895–905
Drogo 907–922
Gosselin 922–962
Gerard I 963–994 (Saint Gerard)
(1026–51)
Stephen 994–995
Robert 995–996
Berthold 996–1019
Herman 1020–1026
Bruno of Eguisheim, later Pope Leo IX
Odo 1052–1069
Poppo 1070–1107
Richwin of Commercy 1108–1126
Conrad I of Schwarzburg 1118–1124
Henry I of Lorraine 1127–1167 (Châtenois)
Peter of Brixey 1168–1192
Odo of Vaudemont 1192–1197
Matthias of Lorraine 1197–1206, † 1217
Reinald of Chantilly 1210–1217
Gerard II of Vaudemont 1218–1219
Odo II of Sorcy 1219–1228
Garin 1228–1230
Roger of Marcey 1231–1251
Giles of Sorcy 1253–1271
Conrad II of Tübingen 1272–1296
John I of Sierck 1296–1305
Vito Venosa 1305–1306
Odo III of Grançon 1306–1308
Giacomo Ottone Colonna 1308–1309
John II of Arzillières 1309–1320
Amatus of Geneva 1320–1330
Thomas of Bourlemont 1330–1353
Bertram de la Tour 1353–1361
Pietro di la Barreria 1361–1363
John III of Hoya 1363–1372
John IV of Neufchatel 1373–1384, † 1398
Savin de Floxence 1384–1398
Philip II de la Ville-sur-Illon 1399–1409
Henry II de la Ville-sur-Illom 1409–1436
Louis de Haraucourt 1437–1449
William Fillatre 1449–1460
John V de Chevrot 1460
Anthony I of Neufchatel 1461–1495
Ulric of Blankenberg 1495–1506
Hugh des Hazards 1506–1517
John, Cardinal of Lorraine 1517–1524, † 1544 (Bishop of Verdun 1523–1544)
Hector de Ailly-Rochefort 1526–1532
John, Cardinal of Lorraine (again) 1532–1537
Anthony II Pellagrin 1537–1542
John of Lorraine-Guise (again) 1542–1543, † 1544
Toussaint de Hossey 1543–1565
Peter III de Châtelet 1565–1580
Charles de Lorraine de Vaudémont 1580–1587 (Bishop of Verdun 1585–1587)
Christopher de la Vallée 1589–1607
John VII Porcelet de Maillane 1609–1624
Nicholas II, Duke of Lorraine 1625–1634
Charles Christian de Gournay 1634–1637
Henry Arnauld
Paolo Fiesco 1643–1645
Jacques Lebret 1645
Henri-Pons de Thiard de Bissy 29 March 1687 to 10 May 1704 (Bishop of Meaux 1704–1737)
Francis Blouet de Camilly 1706-1723
Scipio Jerome Begon 1723-1753
Claude Drouâs de Boussey 1754-1773
Stephen-Francis-Xavier des Michels de Champorcin, last bishop, 1773–1802
