Bishop of the Isles
Image:Diocese of the Isles.jpg|thumb|Arms of the Diocese of the Isles.
The Bishop of the Isles or Bishop of Sodor was the ecclesiastical head of the Diocese of the Isles, one of Scotland's thirteen medieval bishoprics. The bishopric, encompassing both the Hebrides and Mann, probably traces its origins as an ecclesiastical unity to the careers of Olaf, King of the Isles, and Bishop Wimund. Previously, there had been numerous bishoprics and recorded bishoprics include Kingarth, Iona, Skye and Mann. There were very likely numerous others.
List of precursor bishoprics
List of known bishops of Cenn Garad
Kingarth was a church on the Isle of Bute, supposedly founded by Saint Chattan and Saint Blane. Three abbots are known, but only two bishops. Sadly, little is known about the abbey, bishopric and individual clerics.| Tenure | Incumbent | Notes |
| d. 660 | Daniél | The Annals of Ulster, s.a. 660.1, records the death of this "and Daniél, bishop of Cenn Garad". |
| d. 689 | Iolán | The Annals of Ulster, s.a. 689.1, record the death of this Iolán, "bishop of Cenn Garad". |
Bishops of the Isles
List of known bishops of Isles (including Mann)
| Tenure | Incumbent | Notes |
| 1134-x 1148 | Wimund | Described as bishop of sancta ecclesia de Schith "holy church of Skye". His bishopric may have been confined to Skye until 1134 x 1138, when he was definitely bishop of the Isles and Mann. |
| x 1148-x 1152 | Nicholas | Presented by Óláfr Guðrøðarson, King of the Isles to the Dean of York for consecration; no positive evidence that he took office. |
| 1151 x 1152-1152 x 1154 | John ' | Not known to have possessed his see. He was probably a candidate of the Archbishop of York who proved unacceptable to Óláfr. |
| 1154-1154 x 1166 | Gamaliel | |
| 1154 x 1166-1170 | Reginald '' | A Norwegian; called, variously, Reinarb, Reinar, Nemar and Nemarr. |
| 1166-1170 x 1194 | Christian | It is possible that this is the same as Christian, Bishop of Whithorn. |
| x 1194-1203 | Michael | |
| 1203 x 1210-1217 | Nicholas | Also called Koli, a Scandinavian shortening of Nicholas. |
| 1217 x 1226 | Reginald | A relation of the royal family of the Isles. May not have had the support of Furness Abbey, who at that point held the right to elect the Bishop of the Isles. |
| 1217 x 1219-1224 x 1225 | Nicholas de Meaux | Was Abbot of Furness. |
| 1224 x 1226-1226 | John , son of Hefar | Died in an accident soon after becoming bishop. |
| 1226-1248 | Simon | |
| 1248 | Laurence | Laurence had been the archdeacon of Mann, and was elected to the bishopric after the death of Bishop Simon. He presented himself to the King of Norway and the Archbishop of Trondheim; the king would not agree to the election until he had visited personally; however, Laurence and his party drowned near Shetland on the voyage back to Mann. |
| 1253-1275 | Richard | An Englishman who was a canon of St Andrews Cathedral Priory in Scotland. Surname "de Natherton" is hypothetical, but supported by evidence. |
| el. 1275 | Gilbert | An Englishman. Previously Abbot of Rushen, he was apparently elected to the see after the death of Bishop Richard. However, Alexander III, King of Scotland ignored the election and installed instead Mark. |
| 1275-1303 | Mark | . A native of Galloway. Blind at his death in 1303. |
| 1303 x 1305-1322 | Alan | . Died in office. |
| 1324-1326 x 1327 | Gilbert Maclellan | . A native of Galloway. Died in office. |
| 1327 x 1328-1328 x 1331 | Bernard of Kilwinning | |
| 1331 | Cormac Cormacii | . Elected by canons of Skye, but does not appear to have obtained confirmation. |
| 1331-1348 | Thomas de Rossy | |
| 1349-1374 | William Russell | |
| 1374-1387/1392 | John Dongan' | Deprived of bishopric in 1387 by Scottish-backed Avignon Pope Clement VII. Continued in English-controlled Mann until 1392, but from 1387 onwards the diocese has permanently split into two parts. |