1366 state leaders - Events of 1367 - 1368 state leaders - State leaders by year

Africa

• Ethiopia - Newaya Krestos, Emperor of Ethiopia, (1344 - 1372)
• Kano - Yaji I, Emir of Kano (1349-1385)
• Mali - Mari Jata II, King of Mali (1360-1374)

Americas

• Aztecs Tenoch, Great Speaker (1325-1376)

Asia

• China (Yuan Dynasty) - Huizong, Emperor of China (1333-1370)
• Chūzan - Satto - King of Chūzan (1355-1395)
• Hokuzan - Haniji - King of Hokuzan (1322-1395)
• Japan
  • Monarch (Northern Pretender) - Emperor Go-Kōgon, Emperor of Japan (1352-1371)
  • Monarch (Southern Court) - Emperor Go-Murakami, Emperor of Japan (1339-1368)
  • Shogun (Ashikaga) - Ashikaga Yoshiakira, Shogun of Japan (1358-1367)
• Korea (Goryeo Dynasty) - Gongmin, King of Goryeo (1351-1374)
• Nanzan - Ofusato - King of Nanzan (1337-1396)

Europe

• Bulgarian Empire - Ivan Alexander, Tsar of Bulgaria (1331-1371)
• Byzantine Empire (Palaeologan Dynasty) - John V, Emperor (1341-1391)
• Castile - Peter I, King of Castile and Leon (1350-1369)
• Denmark - Valdemar IV, King of Denmark (1340-1375)
• England - Edward III, King of England (1327-1377)
• France - Charles V, King of France (1364-1380)
• Holy Roman Empire (House of Luxembourg) - Charles IV, Holy Roman Emperor (1347-1378)
  • Bavaria-Straubing (House of Wittelsbach) -
    • William I, Duke of Bavaria-Straubing (1347-1388)
    • Albert, Duke of Bavaria-Straubing (1347-1404)
  • Hainaut and Holland (House of Wittelsbach) -
    • Count - William I, Duke of Bavaria-Straubing (1347-1388)
    • Regent - Albert, Duke of Bavaria-Straubing (1358-1388)
• Lithuania - Algirdas, Grand Duke of Lithuania (1345-1377)
• Norway - Haakon VI, King of Norway (1343-1380)
• Portugal -
  1. Peter I, King of Portugal (1357-1367)
  2. Ferdinand I, King of Portugal (1367-1383)
• Sweden - Albert of Mecklenburg, King of Sweden (1363-1389)
• Taranto - Philip II, Prince of Taranto (1364 - 1374)
• Naples - Joan I, Queen of Naples (1343 - 1382)
• Achaea - Philip II, Prince of Achaea (1364 - 1373)
• Moscow - Dmitri Donskoi, Grand Prince of Moscow (1359 - 1389)
• Wallachia - Vladislav I, Voivode of Wallachia (1364 - 1377)

Middle East and North Africa

• Cyprus - Peter I, King of Cyprus (1359-1369)
• Egypt - Shaban II, Sultan of Egypt (1363-1376)
• Ottoman Empire - Murad I, Bey of the Ottoman Empire (1359-1389)