List of state leaders in 1621

1620 state leaders - Events of 1621 - 1622 state leaders - State leaders by year

Africa

• Dahomey - Dakodonou, King of Dahomey (1620–1645)
• Ethiopia - Susenyos, Emperor of Ethiopia (1606–1632)

Asia

• China (Ming Dynasty) - Tianqi, Emperor of China (1620–1627)
• Japan
  • Monarch - Go-Mizunoo, Emperor of Japan (1611–1629)
  • Shogun (Tokugawa) - Tokugawa Hidetada, Shogun of Japan (1605–1623)
  • Ryūkyū Kingdom - Shō Hō, King of Ryūkyū (1621–1640)
• Korea (Joseon Dynasty) - Gwanghaegun, King of Joseon (1608–1623)
• Later Jin (Manchu Empire) - Nurhaci, Emperor of Later Jin (1616–1626)
• Mughal Empire - Jahangir, Mughal Emperor (1605–1627)

Europe

• Denmark–Norway - Christian IV, King of Denmark (1588–1648)
• England - James I, King of England (1603–1625)
• France - Louis XIII, King of France (1610–1643)
• Holy Roman Empire - Ferdinand II, Holy Roman Emperor (1619–1637)
  • Bremen, Prince-Archbishopric - John Frederick, Duke of Schleswig-Holstein-Gottorp, Lutheran Administrator of the Prince-Archbishopric of Bremen (1596–1634)
  • Lübeck, Prince-Bishopric - John Frederick, Duke of Schleswig-Holstein-Gottorp, Lutheran Administrator of the Prince-Bishopric of Lübeck (1607–1634)
• Ottoman ( Turkish ) Empire - Osman II, Ottoman Sultan (1618–1622)
• Papal States -
  • Paul V, Pope (1605–1621)
  • Gregory XV, Pope (1621–1623)
• Polish-Lithuanian Commonwealth - Sigismund III Vasa, King of Poland (1587–1632)
• Russia - Michael I, Tsar of Russia (1613–1645)
• Spain -
  1. Philip III, King of Spain (1598–1621)
  2. Philip IV, King of Spain (1621–1665)
• Sweden - Gustavus Adolphus, King of Sweden (1611–1632)
• United Provinces
  • Estates of Friesland, Groningen, Guelders, Holland, Overijssel, Utrecht, Zeeland (1581–1795)
  • Stadtholder - Maurice of Nassau, Prince of Orange, Stadtholder of Gelre, Holland, Utrecht and Zeeland (1585–1625)
    • Holland - Grand Pensionary -
      1. Andries de Witt (1619–1621)
      2. Anthonie Duyck (1621–1629)
• Wallachia - Radu Mihnea, Prince of Wallachia (1620–1623)

Middle East and North Africa

• Safavid Empire - Abbas I Shah of Iran (1587–1629)