| c. 500 | St Kessog | supposedly martyred c. 520 |
| c. 520 | Edelmius or Edelfrith | |
| c.540 | Cathal | son of Fergus, d. 554 |
| c.560 ? | Nevydd | son of Rhun, killed by Picts and Saxons |
| c. 573 | St Mungo or Kentigern/Cyndern | founder of Glasgow, d. 13 Jan, 612, buried Glasgow Cathedral |
There were bishops in the area prior to the diocese being formally founded and based in Glasgow by charter in 1120 of David I (St David of Scotland) who at the time was Prince of Cumbria. Other than the title "Bishop of the Britons" which remain attached to Bishops, and later Archbishops, of Glasgow until the Reformation, it is not known what they were called. They may have been called Bishop of Strathclyde or of Cumbria.
| 1109 | Michael | Much of his ministry was based in the southern part of Strathclyde which then included Cumbria in England. The church of St Laurence, Moreland appears to have functioned as his cathedral/minister. He performed ordinations there and was buried there |
| 1118 | John | as below |
| 1120 | John | d. 28th May 1147, buried Jedburgh |
| 1147 | Herbert | |
| 1164 | Ingleram of Newbiggin | consecrated in Rome by Pope Alexander III |
| 1175 | Jocelin | former Abbot of Melrose |
| 1189 | Hugh of Roxburgh | elect, Chancellor of Scotland, d. 21 July, 1199 |
| 1200 | William Malvoisin | trans to St Andrews 1202 |
| 1202 | Florence | elect, Chancellor of Scotland, resigned , retired to Rome |
| 1208 | Walter of St Albans | d. 1232 |
| 1233 | William of Bondington | Chancellor to King Alexander II; introduced Sarum rite to Glasgow; d. 10 Nov, 1283, buried Melrose |
| 1259 | Nicolas of Moffat | elect, denied consecration by Pope Alexander IV, because he did not have sufficient funds to pay for it |
| 1259 | John of Cheam | chaplain to Alexander IV & consecrated by him, not accepted in Scotland, forced into exile, died in France in 1268 |
| 1268 | Nicolas of Moffat | elect again, opposed by his cannons, died of apoplexy at Tiningham 1270 |
| 1271 | William Wishart | elect, trans to St Andrews1272 |
| 1272 | Robert Wishart | nephew of above; imprisoned by Edward I of England; supported Robert the Bruce. d. 1316 |
| 1317 | Stephen of Donydouer | died en route to Rome |
| 1318 | John of Eglescliffe | |
| 1319 | John Wishart | died 1325 |
| 1323 | John Lindsay | killed when the ship on which he was returning from Flanders was attacked by an English fleet |
| 1338 | William Rae | |
| 1367 | Walter Wardlaw | secretary to David II, made Cardinal by Pope Clement in 1380 |
| 1389 | Matthew of Glendoning | died 1408 |
| 1408 | William of Lauder | Chancellor; d. 14 June, 1425 |
| 1427 | John Cameron | |
| 1447 | James Bruce (Brewhouse) | trans from Dunkeld |
| 1448 | William Turnbul | Keeper of the Privy Seal, founder of Glasgow University; died in Rome 3 September, 1454 |
| 1455 | Andrew Muirhead | d. 20th Nov 1473 |
| 1475 | John Laing | |
| 1483 | George Carmichael | elect |
| 1483 | Robert Blackadder |
| 1492 | Robert Blackadder | d. 28 July, 1508, en route to the Holy Land |
| 1509 | James Beaton I | |
| 1525 | Gavin Dunbar | |
| 1551 | Alexander Gordon | |
| 1552 | James Beaton II | went into exile 1570, became Ambassador in France for Mary, Queen of Scots and then for James VI |
| 1571 | John Porterfield | titular |
| 1573 | James Boyd | titular |
| 1581 | Robert Montgomery | titular |
| 1585 | William Erskine | titular |
| 1587 | James Beaton II | restored |
| 1610 | John Spottiswoode | trans to St Andrews 1615, fled to England 1638, died 1639, buried Westminister Abbey |
| 1615 | James Law | |
| 1633 | Patrick Lindsay | trans from Ross; deprived in 1638; died Newcastle 1641 |
| 1638 | vacant | |
| 1661 | Andrew Fairfoul | |
| 1664 | Alexander Burnet | trans from Aberdeen; forced from office1669 |
| 1671 | Robert Leighton | "The Saintly Bishop";trans from Dunblane; resigned |
| 1674 | Alexander Burnet | restored; trans to St Andrews 1679 |
| 1679 | Arthur Rose | trans from Argyll; trans to St Andrews 1684 |
| 1684 | Alexander Cairncross | removed 1687; bishop of Rahoe in Ireland in 1691, d. 1701 |
| 1687 | John Paterson | d. 1708 |
| 1708 | Vacant |
| 1731 | Alexander Duncan | formerly Minister at New Kilpatrick; ejected at the Revolution. Consecrated in 1724. The areas of Annandale, Nithdsdale and Tweeddale were extracated from the Diocese during his period and given to Edinburgh; d. 1733 |
| 1733 | vacant | |
| 1787 | Dr William Abernethy Dummond | also Bp of Edinburgh and Galloway; a physician; consecrated in 1787 to the Diocese of Brechin; shortly afterwards tranferred to Edinburgh. Resigned as Bishop of Edinburgh in 1805 to facilitate the union of Church of England & Ireland congregations in Scotland with those of the Scottish Church, but remaining Bishop of Glasgow; d. 1809 |
| 1809 | Dr Daniel Sandford | also Bp of Edinburgh and Galloway |
| 1830 | James Walker | also Bp of Edinburgh and Galloway< |
| c. 397 | St Ninian | died c. 432 |
| ? | Octa | |
| 681 | Trumwise | |
| 731 | Pecthelm of Malmsbury | d. 735 |
| 735 | Frithwald | d. 764 |
| 763 | Pectwine | d. 776 |
| 777 | Ethelbert | 789 trans to Hexham |
| 791 | Beadwulf | consec by Archbp Eanbald I of York; officiated at coronation of King Ardulf of Northumbria in 796; 803 took part in consecration of Bp Edbert II of Lindesfarne
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Arrival of Vikings. Records falter
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| 836 | Heathured | died/resigned (?) 840 |
| c.1080 | Gamaliel or Gamalinus | |
| 1140 | Gilla-Aidan | |
| 1154 | Christian | |
| 1189 | John | |
| 1214 | Walter | |
| 1235 | Odo Ydonc | elect |
| 1235 | Gilbert | |
| 1255 | Henry | |
| 1294 | Thomas of Kirkudbright (of Dalton) | |
| 1327 | Simon of Wedale | |
| 1355 | Michael Malconhalgh | |
| 1359 ? | Thomas Macdowell elect | |
| 1359 | Thomas | |
| 1364 | Adam of Lanark | |
| ? | Andrew | referred to as bishop in 1368 |
| ? | David Douglas | d. 1373 |
| ? | James Carron | resigned 1373 |
| 1378 | Ingram of Kethnis | elect |
| 1379 | Oswald | |
| 1380 | Thomas of Rossy | |
| ? | Francis Ramsay d. 1402 | |
| 1406 | Elisaeus Adougan | |
| 1414 ? | Gilbert Cavan | elect |
| 1415 | Thomas of Bonhill | |
| 1422 | Alexander Vaus | |
| 1451 ? | John | elect; resigned and retired to the Abbey of Holyrude |
| 1451 | Thomas Spens | |
| 1457 ? | Thomas Vaus | elect |
| 1459 | Ninian Spot | |
| 1482 ? | George Vaus | |
| 1508 ? | James Beaton | elect; trans to Archbishopric of Glasgow 1509 |
| 1509 ? | David Arnot | |
| 1526 | Henry Wemyss | |
| 1541 ? | Andrew Dury | |
| 1559 ? | Alexander Gordon | |
| 1610 | Gavin Hamilton | |
| 1612 ? | William Couper | |
| 1635 | Thomas Sydserf | |
| 1661 | James Hamilton | |
| 1675 | John Paterson | |
| 1679 | Arthur Rose | |
| 1680 | James Aitken | |
| 1688 | John Gordon | d. 1726 |
| 1697 | Held with Edinburgh | |
| 1837 | Held with Glasgow |
| 1837 | Michael Russell | |
| 1848 | Walter John Trower | |
| 1859 | William Scott Wilson | |
| 1888 | William Thomas Harrison | |
| 1904 | Archibald Ean Campbell | |
| 1921 | Edward Thomas Scott Reid | |
| 1931 | John Russell Darbyshire | |
| 1938 | John Charles Halland How | |
| 1952 | Francis Hamilton Moncrieff | |
| 1974 | Frederick Goldie | |
| 1981 | Derek Alex Rawlcliffe | trans from New Hebrides |
| 1991 | John Mitchell Taylor | |
| 1998 | Idris Jones |
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