List of state leaders in 1051

This is a list of heads of state, heads of governments, and other rulers in the year 1051.

Africa

Fatimid Caliphate – al-Mustansir Billah (1036–1094)
Hammadid dynasty – Buluggin ibn Muhammad (1046–1062)
Ifriqiya (Zirid dynasty) – Al-Mu'izz ibn Badis (1016–1062)
Wagadou (Ghana Empire) – Bassi (1040–1062)

Americas

Asia

Buwayhid
- Fars – Abu Mansur Fulad Sutun, Daylamid of Fars (1048–1055)
- Iraq – al-Malik al-Rahim, Daylamid of Iraq (1048–1055)
Byzantine Empire – Constantine IX Monomachos (Κωνσταντίνος Θ' ο Μονομάχος) (1042–1055)
Abbasid Caliphate (Baghdad) – Al-Qa'im (1031–1075)
China (Northern Song dynasty) – Emperor Renzong (1022–1063)
Ghaznavid Empire – Vacant (1050–1053)
Japan (Heian period) –
- Monarch – Emperor Go-Reizei (1045–1068)
- Regent (Sesshō/Kampaku) – Fujiwara no Yorimichi, Kampaku (1020–1068); Sesshō (1017–1020)
Khitan Empire – Xingzong (1031–1055)
Khmer Empire – Udayadityavarman II (1050–1066)
Korea (Goryeo Kingdom) – Munjong (1046–1083)
Great Seljuq Empire – Tughril (1037–1063)
Chola Empire (Tamil Nadu) – Rajadhiraja Chola (1018–1054)
Western Xia – Emperor Yizong (1048–1067)

Europe

Kingdom of Aragon – Ramiro I (1035–1063)
County of Barcelona, Ramon Berenguer I (1035–1076)
Byzantine Empire – Constantine IX Monomachos (Κωνσταντίνος Θ' ο Μονομάχος) (1042–1055)
Kingdom of Castile – Ferdinand I the Great (1035–1065)
Kingdom of Croatia – Stjepan (1030–1058)
Kingdom of Denmark – Sweyn Estridson (1047–1076)
Kingdom of England – Edward III the Confessor (1042–1066)
Kingdom of France – Henry I (1031–1060)
- County of Angoulême – Fulk (1048–1089)
- County of Anjou – Geoffrey II Martel (1040–1060)
- Duchy of Aquitaine – William VII (1039–1058)
- County of Auvergne – William V (1032–1064)
- County of Blois & County of Champagne – Theobald III(I) (1037–1089)
- County of Boulogne – Eustace II (1049–1093)
- Duchy of Brittany – Conan II of Rennes (1040–1066)
- Duchy of Burgundy – Robert I (1032–1076)
- County of Flanders – Baldwin V (1037–1067)
- County of Maine – Hugh IV (1036–1051)
- Duchy of Normandy – William the Bastard (1035–1087)
- County of Toulouse – Pons (1037- c. 1061)
Kingdom of Georgia – Bagrat IV (1027–1072)
Holy Roman Empire – Henry III (1039–1056)
- Margraviate of Austria – Adalbert (1018–1055)
- Barrois – Sophie, Countess of Bar (1033–1092)
- Duchy of Bavaria – Conrad I (1049–1053)
- Duchy of Bohemia – Bretislav I (1035–1055)
- County of Burgundy – Renaud I (1026–1057)
- Duchy of Carinthia – Welf (1047–1055)
- Prince-Bishopric of Liège – Theodwin of Liège (1048–1075)
- Duchy of Lower Lorraine – Frederick of Luxembourg (1046–1065)
  - County of West Friesland – Floris I, Count of West Friesland (1049–1061)
- Duchy of Upper Lorraine – Gerhard (1048–1070)
- County Palatine of Lotharingia – Heinrich I (1045–1061)
- County of Provence – Fulk Bertrand & Geoffroi I (1018–1051 & 1032–1062)
- County of Savoy – Amadeus I (c. 1048- c. 1056)
- Duchy of Saxony – Bernard II (1011–1059)
- Duchy of Swabia – Otto III (1048–1057)
Holy See – Pope Leo IX (1049–1054)
Kingdom of Hungary – Andrew (1047–1061)
Ireland – Donnchad mac Briain, High King of Ireland (1024–1064)
Kievan Rus' – Yaroslav I the Wise (1019–1054)
Kingdom of León – Ferdinand I the Great (1037–1065)
Kingdom of Navarre – Garcia V (1035–1054)
Kingdom of Norway – Harald Hardråde (1046–1066)
Duchy of Poland – Casimir I (1039–1058)
Kingdom of Scotland – Macbeth (1040–1057)
Kingdom of Sweden – Emund (1050–1060)
Republic of Venice – Domenico Contarini, Doge of Venice (1043–1071)
Wales (List of rulers of Wales)
- Deheubarth – Gruffydd ap Rhydderch (1047–1055)
- Glywysing – Gruffydd ap Rhydderch (1033–1055)
- Kingdom of Gwent – Meurig ap Hywel & Cadwgan ap Meurig (1045–1055 & 1045–1074)
- Kingdom of Gwynedd – Gruffydd ap Llywelyn (1033–1063)

Middle East

Abbasid Caliphate – Al-Qa'im, Caliph (1031–1075)
Byzantine Empire – Constantine IX Monomachos (Κωνσταντίνος Θ' ο Μονομάχος) (1042–1055)
Great Seljuq Empire – Toghrül (1037–1063)
Kerman – Qawurd, Sultan of Kerman (1041–1073)