The Kings or Judges (from the Latin iudices and the Sardinian judikes, "judges," the title of the Byzantine officials left behind when Imperial power receded in the West) of the Arborea were the local rulers of the west of Sardinia during the Middle Ages. Theirs was the longest-lasting judgedom, surviving as an independent state until the fifteenth century.

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• Gonario I (c. 1015 – c. 1038)
• Barisone I (c. 1038 – c. 1060)
• Marianus I (c. 1060 – c. 1070)
• Orzocorre I (c. 1070 – c. 1100)
• Torbeno (c. 1100)
• Orzocorre II (c. 1100 – c. 1122)
• Comita I

• Gonario II
• Constantine I (c. 1101 – 1131)
• Comita II (1131 – 1147)
• Orzocorre III, co-ruler
• Barisone II (1147 – 1185)
• Hugh I (1185 – 1211), in opposition to Peter until 1192
• Peter I (1185 – 1214), in opposition to Hugh until 1192
• Peter II (1211 – 1241), sole ruler from 1217
• Barisone III (1214 – 1217)

• Marianus II (1241 – 1297)
  • William of Capraia (1241 – 1264)
  • Nicholas of Capraia (1264 – 1274)
  • Anselm of Capraia (1274 – 1287)
• John (1297 – 1304)
• Andrew (1304 – 1308)
• Marianus III (1308 – 1321)
• Hugh II (1321 – 1336)
• Peter III (1336 – 1347)
• Marianus IV (1347 – 1376)
• Hugh III (1376 – 1383)

• Frederick (1383 – 1387)
  • Eleanor (1383 – 1387), Co-rule first time
• Marianus V (1387 – 1407)
  • Eleanor (1387 – 1402), Co-rule second time

• William (1407 – 1410)
  • Leonardo Cubello (regent: 1407 – 1410)

Sold to Crown of Aragon. Following were titular rulers.

• Leonardo Cubello (1410 – 1427), Margrave of Oristano and Count of Goceano
• Antonio Cubello (1427 – 1463), Margrave of Oristano and Count of Goceano
• Salvador Cubello (1463 – 1470), Margrave of Oristano and Count of Goceano
• Leonardo de Alagona (1470, claimed the positions of Margrave of Oristano and Count of Goceano, raised a revolt

Rights passed to the House of Alagona, lords of Sastago and Pina, whom the Aragonese deposed as result of the revolt.

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