List of state leaders in 1015
1014 state leaders - Events of 1015 - 1016 state leaders - State leaders by year
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Africa
- Algeria(Hammadid) - Hammad ibn Buluggin (1008-1028)
- Egypt(Fatimids) - Husayb al-Hakim Bi-Amrillah, Fatimid caliph (996-1021)
Americas
Asia
- Ani - Gagik of Ani, King of Ani (989-1020)
- Caliphate(Abbasid) - Al-Qadir, Caliph in Baghdad (991-1031)
- China (Northern Song Dynasty) - Zhenzong, Emperor of Song China (997-1022)
- Ghaznavid Empire - Mahmud of Ghaznavid (998-1030)
- Japan -
- Monarch - Sanjo, Emperor of Japan (1011-1016)
- de facto - Fujiwara no Michinaga (995-1017)
- Khitan Empire - Shengzong, Khitan Emperor (982-1031)
- Khmer Empire - Suryavarman I (1001-1050)
- Korea (Goryeo Dynasty) - Hyeonjong, King of Goryeo (1009-1031)
- Tamil Nadu - Rajendra Chola, King of Tamil Nadu (1012-1044)
- Vietnam (Ly Dynasty) - Ly Thai To, King of Vietnam (1010-1028)
Europe
- England - Ethelred II, also known as Ethelred the Unready, King of England (March 18, 978 - December 25, 1013 and February 2, 1014 - April 23, 1016)
- Holy Roman Empire (Germany) - Henry II, Holy Roman Emperor of the Ottonian dynasty (elected and coronated June 7, 1002, crowned by Pope Benedict VIII on February 14, 1014, died July 13, 1024). Also King of Italy.
- Hungary - Stephen I, King of Hungary (997-1038)
- Norway - Olaf II, also known as Olaf the Fat and posthumously as Saint Olaf, King of Norway (1015-1028)
- Spain - Suleiman II of the Umayyad Dynasty, Caliph of Cordoba (1009-1010 and 1012-1017)
- Sweden - Olof of Sweden, King of Sweden (995 - 1022)