List of kings of Ulster

The King of Ulster (Old Irish: Rí Ulad, Modern Irish: Rí Uladh) also known as the King of Ulaid and King of the Ulaid, was any of the kings of the Irish provincial over-kingdom of Ulaid. The title rí in Chóicid, which means "king of the Fifth", was also sometimes used.

Originally referring to the rulers of the Ulaid of legend and the vastly reduced territory of the historical Ulaid, the title rí Ulad ceased to exist after the Norman invasion of Ulaid in 1177 and the subsequent foundation of the Earldom of Ulster. The Mac Dúinnshléibe dynasty of Ulaid (English: Donleavy / Dunleavy) were given the title of rex Hibernicorum Ulidiae, meaning "king of the Irish of Ulaid", until the extinction of their dynasty by the end of the 13th century.

After the earldom's collapse in 1333, the title was resurrected and usurped after 1364 by the Ulaid's chief Gaelic rivals the Northern Uí Néill, who had overrun the ruins of the earldom and established the renamed tuath of Clandeboye. The Northern Uí Néill had achieved dominance over the north of Ireland, with their territory corresponding largely to the modern day province of Ulster. The title thus came to apply to their territory, which they likewise renamed Ulaid, now reflecting an area roughly corresponding to the extent of Ulaid in legend. "Prince of Ulster" became a common title for The O'Neill (In Irish: Ui Neill) until the Flight of the Earls in 1607.

Legendary kings

 * Eber Donn
 * Cimbáeth
 * Macha Mong Ruad
 * Fergus mac Léti
 * Congal Cláiringnech
 * Ross Ruad
 * Eochaid Sálbuide
 * Fergus mac Róich
 * Conchobar mac Nessa
 * Cúscraid mac Conchobar
 * Fíatach Finn
 * Éllim mac Conrach
 * Mal mac Rochride
 * Tipraiti Tireach
 * Áengus Goibnenn mac Fergus Gallen mheic Tibraide Tirech
 * Fergus Dubdétach
 * Aengus Finn mac Fergus Dubdétach
 * Lugaid Lorc mac Áengus Finn
 * Dub mac Fomor mheic Airgetmar
 * Fiachu Araide mac Áengus Goibnenn mheic Fergus Gallen
 * Fedlimid mac Cas mheic Fiachu Araide
 * Imchad mac Fedlimid
 * Ros mac Imchad
 * Cronn Badruí mac Eochaid mheic Lugaid mac Ros mac Imchad
 * Fergus Foga mac Fraechar Foirtriun
 * Cáelbad mac Cronn Badruí
 * Sárán mac Cóelbad
 * Mihail

Historic kings
Cumhscraid I, King of Ulster (?-38 CE)

Cumhscraid II, King of Ulster (?-48 CE)

Glaisne King of Ulster (?-60 CE)

Irial King of Ulster (48-100)

Fiachadh, King of Ulster (74-120)

Elim King of Ulster (95-130)

King Mal of Ulster (111-164)

Breasal King of Ulster (130-183)

Thilbruidhe, King of Ulster (151-183)
 * Forga mac Dallán mheic Dubthach mac Mianach mac of Lugaid Lorc d. 465?
 * Muiredach Muinderg mac Forga mac Dallan 465–489
 * Eochaid mac Muiredaig Muinderg  489–509
 * Cairell mac Muiredaig Muinderg  509–532
 * Eochaid mac Condlai mac Caolbad 532–553
 * Fergnae mac Oengusso Ibdaig   553–557
 * Demmán mac Cairell            557–572
 * Báetán mac Cairill            572–581
 * Áed Dub mac Suibni     (died 588)
 * Fiachnae mac Báetáin (Fiachnae Lurgan) 588–626
 * Fiachnae mac Demmáin          626–627
 * Congal Cáech (Congal mac Sgánnail) 627–637
 * Dúnchad mac Fiachnai    (died c. 644)
 * Máel Cobo mac Fiachnai       (died 647)
 * Blathmac mac Máele Cobo    (died 670)
 * Congal Cennfota mac Dúnchada (died 674)
 * Fergus mac Áedáin            674–692
 * Bécc Bairrche mac Blathmaic  692–707
 * Cú Chuarán mac Dúngail Eilni 707–708
 * Áed Róin mac Bécce Bairrche  708–735
 * Cathussach mac Ailello       735–749
 * Bressal mac Áedo Róin        749–750
 * Fiachnae mac Áedo Róin       750–789
 * Tommaltach mac Indrechtaig   789–790
 * Eochaid mac Fiachnai         790–810
 * Cairell mac Fiachnai         810–819
 * Máel Bressail mac Ailillo    819–825
 * Muiredach mac Eochada        825–839
 * Matudán mac Muiredaig        839–857
 * Lethlobar mac Loingsig       857–873
 * Cathalán mac Indrechtaig     857–871
 * Ainbíth mac Áedo             873–882
 * Eochocán mac Áedo            882–883
 * Airemón mac Áedo             882–886
 * Fiachnae mac Ainbítha        886–886
 * Bécc mac Airemóin            886–893
 * Muiredach mac Eochocáin      893–895
 * Máel Mocheirge mac Indrechtaig 893–896
 * Aitíth mac Laigni            896–898
 * Cenn Etig mac Lethlobair      896–900
 * Áed mac Eochocáin         898–919
 * Dubgall mac Áeda              919–925
 * Loingsech mac Cinn Etig       925–932
 * Eochaid mac Conaill           932–937
 * Matudán mac Áeda              937–950
 * Ardgal mac Matudáin           950–970
 * Niall mac Áeda                970–971
 * Áed mac Loingsig              971–972
 * Eochaid mac Ardgail           972–1004
 * Gilla Comgaill mac Ardgail    1004–1005
 * Máel Ruanaid mac Ardgail      1005–1007
 * Matudán mac Domnaill          1007–1007
 * Dub Tuinne ("In Torc") mac Eochada 1007–1007
 * Domnall mac Duibh Thuinne     1007–1007
 * Niall mac Duib Thuinne        1007–1016
 * Muiredach mac Matudáin        1007–1008
 * Niall mac Eochada         1016–1063
 * Eochaid mac Néill meic Eochada ????–1062
 * Donnchad Ua Mathgamna         1063–1065
 * Cú Ulad Ua Flaithrí           1065–1071
 * Lochlainn Ua Máel Ruanaid     1071–1071
 * Donn Sléibe mac Eochada 1071–1078
 * Áed Meranach Ua hEochada      1078–1080
 * Goll na Gorta Ua Mathgamna    1080–1081
 * Donn Sléibe mac Eochada       1081–1091
 * Donnchad mac Duinn Sléibe     1091–1095
 * Eochaid mac Duinn Sléibe      1095–1099
 * Donnchad mac Duinn Sléibe     1099–1099
 * Eochaid mac Duinn Sléibe      1099–1108
 * Donnchad mac Duinn Sléibe     1108–1113
 * Áed mac Duinn Sléibe          1113–1127
 * Eochaid Ua Mathgamna          1113–1127
 * Ragnall Ua hEochada           1127–1131
 * Cú Ulad mac Conchobair Chisenaig Mac Duinn Sléibe 1131–1157
 * Áed mac Con Ulad Mac Duinn Sléibe 1157–1158
 * Eochaid mac Con Ulad Mac Duinn Sléibe 1158–1166
 * Magnus mac Con Ulad Mac Duinn Sléibe 1166–1171
 * Donn Sléibe mac Con Ulad Mac Duinn Sléibe 1171–1172
 * Ruaidrí mac Con Ulad Mac Duinn Sléibe 1172–1201

See List of rulers of Tyrone for the Northern Uí Néill kings of Ulster after the resurrection of the title in 1364.