Skálholt was the estate of the first Bishop of Iceland, Isleifr Gizurarson, who became bishop in 1056. (Christianity had been formally adopted in 1000). His son, Gizurr, donated it to become the official see.
The Diocese was amalgamated in 1801, and now forms part of the Diocese of Reykjavik.

There is still a current Bishop of Skálholt, as it is now a Suffragan See (Anglican/Lutheran sense) in the Reykjavik diocese.

Roman Catholic

• 1056 – 1080: Ísleifur Gissurarson
  Ísleifur Gissurarson
  Ísleifur Gissurarson , an Icelandic clergyman, became the first bishop of Iceland, following the adoption of Christianity in 1000 AD.His parents were Gissur Teitsson and Þórdís Þóroddsdóttir...
  
  
• 1082 – 1118: Gissur Ísleifsson
  Gissur Ísleifsson
  Gissur Ísleifsson was an Icelandic clergyman, who, in 1082, became the second Catholic bishop of Iceland in the aftermath of the adoption of Christianity by the island's inhabitants 82 years earlier in the year 1000....
  
  
• 1118 – 1133: Þorlákur Runólfsson
  Þorlákur Runólfsson
  Þorlákur Runólfsson was an Icelandic clergyman, who became the third bishop of Iceland from 1118 to his death in 1133, following the adoption of Christianity in 1000. He served in the diocese of Skálholt.-See also:*List of Skálholt bishops...
  
  
• 1134 – 1148: Magnús Einarsson
  Magnús Einarsson
  Magnús Einarsson was an Icelandic Roman Catholic clergyman, who became the fourth bishop of Skálholt from 1134 to 1148. He served in the diocese of Skálholt.-See also:*List of Skálholt bishops...
  
  
• 1152 – 1176: Klængur Þorsteinsson
  Klængur Þorsteinsson
  Klængur Þorsteinsson was an Icelandic Roman Catholic clergyman, who became the fourth bishop of Iceland from 1152 to 1176. He served in the diocese of Skálholt.-External links:...
  
  
• 1178 – 1193: Þorlákur helgi Þórhallsson
• 1195 – 1211: Páll Jónsson
  Páll Jónsson
  Páll Jónsson was an Icelandic Roman Catholic clergyman, who became the seventh bishop of Iceland from 1195 to 1211. He served in the diocese of Skálholt.-External links:...
  
  
• 1216 – 1237: Magnús Gissurarson
  Magnús Gissurarson
  Magnús Gissurarson was an Icelandic Roman Catholic clergyman, who became the eighth bishop of Iceland from 1216 to 1237. He served in the diocese of Skálholt.Magnús Gissurarson was married and had two sons.-External links:...
  
  
• 1238 – 1268: Sigvarður Þéttmarsson (Norwegian)
• 1269 – 1298: Árni Þorláksson
  Árni Þorláksson
  Árni Þorláksson was an Icelandic Roman Catholic clergyman, who became the tenth bishop of Iceland .He served in the diocese of Skálholt. Árni had orders from his superior in Norway to take control of local church property away from secular chieftains. He was largely successful in this.-External...
  
  
• 1304 – 1320: Árni Helgason
• 1321 – 1321: Grímur Skútuson (Norwegian)
• 1322 – 1339: Jón Halldórsson (Norwegian)
• 1339 – 1341: Jón Indriðason (Norwegian)
• 1343 – 1348: Jón Sigurðsson
• 1350 – 1360: Gyrðir Ívarsson (Norwegian)
• 1362 – 1364: Þórarinn Sigurðsson (Norwegian)
• 1365 – 1381: Oddgeir Þorsteinsson (Norwegian)
• 1382 – 1391: Mikael (Danish)
• 1391 – 1405: Vilchin Hinriksson (Danish)
• 1406 – 1413: Jón (Norwegian)
• 1413 – 1426: Árni Ólafsson
• 1426 – 1433: Jón Gerreksson (Danish)
• 1435 – 1437: Jón Vilhjálmsson Craxton (English)
• 1437 – 1447: Gozewijn Comhaer (Dutch)
• 1448 – 1462: Marcellus
  Marcellus
  -In Christianity:* Marcellus of Ancyra , bishop* Pope Marcellus I, saint* Pope Marcellus II, Italian pope* Marcellus of Tangier , martyr* Pseudo-Marcellus, author of the Passio sanctorum Petri et Pauli...
  
   (German)
• 1462 – 1465: Jón Stefánsson Krabbe (Danish)
• 1466 – 1475: Sveinn spaki Pétursson
• 1477 – 1490: Magnús Eyjólfsson
• 1491 – 1518: Stefán Jónsson
• 1521 – 1540: Ögmundur Pálsson

Lutheran

• 1540 – 1548: Gissur Einarsson
  Gissur Einarsson
  Gissur Einarsson was a bishop in Skálholt from 1540 to his death, and the first Lutheran bishop in Iceland.Gissur was the son of Einar Sigvaldason on Hraun í Landbroti and of Gunnhildur Jónsdóttir. He attended Skálholt's school where he was instructed by bishop Ögmundur Pálsson and went to study...
  
  
• 1549 – 1557: Marteinn Einarsson
• 1558 – 1587: Gísli Jónsson
• 1589 – 1630: Oddur Einarsson
• 1632 – 1638: Gísli Oddsson
• 1639 – 1674: Brynjólfur Sveinsson
  Brynjólfur Sveinsson
  Brynjólfur Sveinsson served as the Lutheran Bishop of the see of Skálholt in Iceland. His main influence has been on modern knowledge of Old Norse literature. He is currently pictured on the Icelandic 1000 krónur bill....
  
  
• 1674 – 1697: Þórður Þorláksson
• 1698 – 1720: Jón Vídalín
• 1722 – 1743: Jón Árnason
• 1744 – 1745: Ludvig Harboe
  Ludvig Harboe
  Ludvig Harboe was a Danish/Norwegian theologian and bishop.Harboe was mostly educated in Germany. He was sent to Iceland in 1741 to inspect the state of the church there on behalf of the Danish church. He initiated some reforms there and while there was appointed to the post of Bishop of the...
  
   (Danish)
• 1747 – 1753: Ólafur Gíslason
• 1754 – 1785: Finnur Jónsson
• 1785 – 1796: Hannes Finnsson