List of heads of state 1021

Africa

Egypt ( Fatimids )
- Caliph : Al-Hakim (996-1021)
- Caliph: Ali az-Zahir (1021-1036)

China
- Liao (in North China)
  - Emperor : Shengzong (982-1031)
- Northern song
  - Emperor : Zhenzong (987-1022)
- Xi Xia
  - Emperor : Tàizōng (1005-1031)

India
- Western Chalukya (in the West Indies)
  - King : Rajaraja Narendra (1018-1061)
- Chola (in South India)
  - King : Rajendra I. (1014-1044)
- Cashmere ( Lohara Dynasty )
  - King : Sangrama Raja (1003-1028)
- Pala
  - King : Ramapala (approx. 974 – approx. 1027)
- Pratihara
  - King : Trilochanpala (1018-1027)

Iran
- Old Untaschiden
  - Ruler: Abu Said Altun-Tash (1017-1032)
- Buyiden
  - Ruler of Jibal : Shams ad-Daula Abu Tahir Fulan (997-1021)
  - Ruler: Sama ad-Daula Abu l-Hasan Fulan (1021-1028)
  - Ruler of Fars and Khuzistan : Sultan ad-Daula Abu Shudscha (1012-1024)
  - Ruler of Kirman : Qawam ad-Daula Abu l-Fawaris (1012-1028)
- Ghaznavids
  - Ruler : Mahmud (997-1030)

Denmark
- King : Canute II the Great (1018-1035) (1016-1035 King of Denmark), (1028-1035 King of Norway)

England
- King : Canute the Great (1016–1035) (1018–1035 King of Denmark), (1028–1035 King of Norway)

France
- King : Robert II (996-1031)
- Anjou
  - Count : Fulko III. (987-1040)
- Aquitaine
  - Duke : Wilhelm V (995-1030)
- Auvergne
  - Count : Robert I. (1016-1032)
- Brittany
  - Duke : Alain III. (1008-1040)
- Burgundy (Duchy)
  - Duke : Heinrich (1016-1032) (1031-1060 King of France)
- Burgundy (Free County)
  - Count Palatine : Otto Wilhelm (982-1026)
- Maine
  - Count : Herbert I. (1015-1032)
- Normandy
  - Duke : Richard II (996-1026)
- Toulouse county
  - Count : Wilhelm III. (960-1037)

Holy Roman Empire
- Roman-German King : Heinrich II. (1002-1024) (from 1014 emperor )
  - Bavaria
    - Duke : Heinrich V ( 1004–1009 , 1017–1026)
  - Bohemia
    - Duke : Oldřich (1012-1033)
  - Flanders
    - Count : Balduin IV. (988-1035)
  - Holland
    - Count : Dietrich III. (993-1039)
  - Carinthia
    - Duke : Adalbero von Eppenstein (1012-1035)
  - Lausitz
    - Margrave : Thietmar (1015-1030)
  - Luxembourg
    - Count : Heinrich I (998–1026) (1004–1009, 1017–1026 Duke of Bavaria)
  - Meissen
    - Margrave : Hermann I. (1009-1038)
  - Lower Lorraine
    - Duke : Gottfried II. (1012-1023)
  - Upper Lorraine
    - Duke : Dietrich I. (978-1026 / 27)
  - Saxony
    - Duke : Bernhard II. (1011-1059)
  - Swabia
    - Duke : Ernst II (1015-1030)

Italy
- National king: Heinrich II. (1004-1024)
- Amalfi
  - Duke : Sergius II. (III.) (1007-1028)
- Benevento (common rule)
  - Duke : Landulf V. (987-1033)
  - Duke: Pandulf III. (1012-1050)
- Capua (common rule)
  - Prince : Pandulf II. (1007-1022)
  - Prince: Pandulf IV. (1016-1022, 1026-1038, 1047-1050 )
- Papal States
  - Pope : Benedict VIII (1012-1024)
- Montferrat
  - Margrave : Wilhelm III. (991-1042)
- Naples
  - Duke : Sergius IV. (1002-1036)
- Salerno
  - Prince : Waimar III. (994-1027)
- Sicily ( Kalbites )
  - Emir : al-Akhal (1019-1037)
- Tuscany
  - Margrave : Rainier (1012-1024)
- Venice
  - Doge : Ottone Orseolo (1009-1026)

Poland
- Duke : Bolesław I Chrobry (992–1025) (crowned king 1025) , (1003–1004 Duke of Bohemia)

Spain
- Barcelona
  - Count : Berengar Raimund I. (1017-1035)
- Caliphate of Cordoba
  - Caliph : al-Qasim al-Ma'mun (1018-1021, 1023 )
  - Caliph: Yahya al-Mutali (1021-1023, 1025-1026 )
- Castile
  - Count : García Sánchez (1017-1029)
- Leon
  - King : Alfonso V (999-1028)
- Navarre
  - King : Sancho III. (1000-1035)