List of state leaders in 991

990 state leaders - Events of 991 - 992 state leaders - State leaders by year -----

Africa

*Fatimid Caliphate - unicode|Abū Manṣūr Nizār al-'Azīz bi-llāh, Caliph (975-996)
**Ifriqiya - Al-Mansur ibn Buluggin, Zirid Viceroy (984-995)

Americas

Asia

*Byzantine Empire - Basil II Bulgaroktonus, Byzantine emperor (976-1025)
*China (Northern Song Dynasty) - Taizong, Emperor of Song China (976-997)
*Japan -
**Monarch - Emperor Ichijō, emperor of Japan (986-1011)
**Regent (Sessho) - Fujiwara no Michitaka, Sessho (990-993); Kampaku (993-995)
*Khitan Empire - Shengzong, Khitan Emperor (982-1031)
*Korea (Goryeo Dynasty) - Seongjong, King of Goryeo (981-997)

Europe

*Al-Andalus
**Hisham II, Umayyad Caliph (976-1009)
**Al-Mansur Ibn Abi Aamir, Hajib (978-1002)
*Barcelona - Borrell II, Count of Barcelona (948-992)
*Brittany - Conan I, Duke of Brittany (990-992)
*Bulgaria Joint rulers (Samuil was not officially proclaimed Emperor until Roman's death in 997)
**Roman I, Tsar of Bulgaria (976-997)
**Samuil, Tsar of Bulgaria (976-1014)
*Byzantine Empire - Basil II, Byzantine Emperor (976-1025)
*Castile - Garcia I Fernandez, Count of Castile (970-995)
*Denmark - Sweyn Forkbeard (c.986-1014)
*England - Aethelred II, King of England (978-1016)
*France - Hugh Capet, King of France (987-996)
**Anjou - Fulk III, Count of Anjou (987-1040)
**Aquitaine - William IV Iron Arm, Duke of Aquitaine (963-995)
**Burgundy - Otto-Henry, Duke of Burgundy (965-1002)
**Normandy - Richard I, Duke of Normandy (942-996)
**Provence - Rotbold III, Count of Provence (961-1008)
*Germany - Otto III, King of Germany (983-1002)
**Bavaria - Henry the Wrangler, Duke of Bavaria (955-976 and 985-995)
**Bohemia - Boleslaus II the Pious, Duke of Bohemia (972-999)
**Franconia - Otto von Worms, Duke of Franconia (955-1004)
**Lorraine - Thierry I, Duke of Lorraine (978-c.1026)
**Saxony - Bernard I, Duke of Saxony (973-1011)
**Swabia - Conrad I, Duke of Swabia (982-997)
*Hungary - Géza of Hungary, Fejedelem of the Magyars (c.970-997)
*Ireland - Mael Seachlainn II Mor, High King of Ireland (979-1002)
*Kievan Rus - Vladimir I, Grand Prince of Kiev (980-1015)
*Leon - Bermudo II, King of Leon (982-999)
*Norway - Haakon Jarl, Earl of Norway (976-995)
* Poland - Mieszko I, Duke of Poland (ca 960-992)
*Provence - Roubaud III, Count of Provence (961-1018
*Scotland - Kenneth II, King of Scotland (971-995)
*Sweden - Eric the Victorious, King of Sweden (970-995)
*Venice -
*#Tribuno Memmo, Doge of Venice (979-991)
*#Pietro II Orseolo, Doge of Venice (991-1009)

Middle East

*Abbasid Caliphate - At-Ta'i, Caliph (991-1031)
*Byzantine Empire - Basil II, Byzantine Emperor (976-1025)
*Persia
**Fars (Buwayhids) - Samsam al-Daula, Emir (989-998)
**Hamadan (Buwayhids) - Fakhr al-Daula, Emir (984-997)
**Samanids - Nuh II (976-997)
**Seistan (Saffarids) - Wali-ud-Dawlah Khalaf I (963-1003)