1664 state leaders - Events of 1665 - 1666 state leaders - State leaders by year

Africa

• Dahomey - Houegbadja, King of Dahomey (1645-1685)
• Ethiopia - Fasilides, Emperor of Ethiopia (1632-1667)

Asia

• China (Qing Dynasty) - Kangxi, Emperor of China (1662-1722)
• Japan -
  • Monarch - Reigen, Emperor of Japan (1663-1687)
  • Shogun (Tokugawa) - Tokugawa Ietsuna, Shogun of Japan (1651-1680)
  • Ryūkyū Kingdom - Shō Shitsu, King of Ryūkyū (1648-1668)
• Korea (Joseon Dynasty) - Hyeonjong, King of Joseon (1659-1674)
• Mughal Empire - Aurangzeb, Mughal Emperor (1658 - 1707)
• Taiwan (Dongning) - Zheng Jing, Ruler of Dongning (1662-1681)

Europe

• Austria - Leopold VI, Archduke of Austria (1657-1705), also Leopold I of the Holy Roman Empire (1658-1705)
• Denmark-Norway - Frederick III, King of Denmark and King of Norway (1648-1670)
• England - Charles II, King of England (1660-1685)
• France - Louis XIV, King of France (1643-1715)
• Polish-Lithuanian Commonwealth - Jan II Kazimierz Vasa, King of Poland (1648-1668)
• Portugal - Afonso VI, King of Portugal (1656-1667)
• Savoy - Charles Emmanuel II, Duke of Savoy (1638-1675)
• Spain
  • Philip IV, King of Spain (1621-1665)
  • Charles II, King of Spain (1665-1700)
• Sweden - Charles XI, King of Sweden (1660-1697)
• United Provinces
  • Estates of Friesland, Groningen, Guelders, Holland, Overijssel, Utrecht, Zeeland (1581-1795)
  • Grand Pensionary of Holland - Johan de Witt (1653-1672)