List of state leaders in 1266

See also
List of state leaders in 1265 Events of 1266 List of state leaders in 1267 State leaders by year

This is a list of heads of state, government leaders, and other rulers in the year 1266.

Asia

China (Southern Song dynasty) - Emperor Duzong (1264–1274)
Korea (Goryeo Kingdom) – Wonjong (1259–1274)
Japan (Kamakura period)
- Monarch – Emperor Kameyama (1260–1274)
- Kamakura shogunate -
  1. Prince Munetaka (1252–1266)
  2. Prince Koreyasu (1266–1289)
- Shikken - Hōjō Masamura (1264–1268)
Khmer Empire – Jayavarman VIII (1243–1295)
Mongol Empire – Kublai Khan (1260–1294)
Pagan Kingdom – Narathihapate (1254–1287)
Sukhothai Kingdom – Pho Khun Ban Muang (1257–1277)

Principality of Achaea – William II Villehardouin (1246–1278)
Kingdom of Aragon – James I (1213–1276)
Kingdom of Bohemia – Ottokar II (1253–1278)
Bulgarian Empire – Constantine Tikh, Tsar of Bulgaria (1257–1277)
Byzantine Empire (Palaeologian dynasty) - Michael VIII (1259–1282)
Crown of Castile – Alfonso X (1252–1284)
Kingdom of Denmark – Eric V (1259–1286)
Kingdom of England – Henry III (1216–1272)
Kingdom of France – Louis IX (1226–1270)
Kingdom of Gwynedd – Llywelyn ap Gruffudd (1246–1282)
Holy Roman Empire – (disputed election) Richard, 1st Earl of Cornwall, King of the Romans (1257–1272) and Alfonso X of Castile, King of the Romans (1257–1284)
- County of Holland – Floris V (1256–1296)
Kingdom of Hungary – Béla IV (1235–1270)
Grand Duchy of Lithuania – Vaišelga (1264–1267)
Kingdom of Navarre – Theobald II (1253–1270)
Kingdom of Norway – Magnus VI (1263–1280)
Duchy of Poland – Bolesław V the Chaste, High Duke of Poland (1243–1279)
Kingdom of Portugal – Afonso III (1249–1279)
Kingdom of Scotland – Alexander III (1249–1286)
Kingdom of Sweden
- Monarch – Valdemar I (1250–1275)
- Regent – Birger Jarl, regent of Sweden (1250–1266)

Armenian Kingdom of Cilicia – Hethum I (1226–1270)
Kingdom of Cyprus – Hugh II (1253–1267)
Mamluk Sultanate of Egypt – Baibars (1260–1277)
Ilkhanate – Abaqa (1265–1281)
Seljuks of Turkey