List of state leaders in 1255 - Definition

1254 state leaders - Events of 1255 - 1256 state leaders - State leaders by year

Asia

• China (Southern Song Dynasty) - Lizong, Emperor of China (1224-1264)
• Goryeo (Korea) - King Gojong, King of Goryeo (1213-1259)
• Japan
  • Monarch - Go-Fukakusa, Emperor of Japan (1246-1260)
  • Shogun (Kamakura) - Prince Munetaka, Shogun of Japan (1252-1266)
  • Shikken - Hojo Tokiyori, Shikken (1246-1256)
• Khmer Empire - Jayavarman VIII (1243 - 1295)
• Mongol Empire - Möngke Khan, Mongol Khan (1251-1260)
• Pagan - Narathihapate, King of Pagan (1254-1287)
• Sukhotai - Pho Khun Si Indrathit, King of Sukhothai (1249-1257)

Europe

• Achaea - William II Villehardouin, Principality of Achaea (1246-1278)
• Angouleme - Hugh II, Count of Angouleme (1249-1260)
• Bohemia - Ottokar I, King of Bohemia (1253-1278)
• Brittany - John I, Duke of Brittany (1237-1286)
• Bulgaria - Michael II Asen, King of Bulgaria (1246-1256/1257)
• Castile - Alfonso X of Castile, King of Castile and Leon (1252-1284)
• Champagne - Theobald V, Count of Champagne (1253-1270)
• Denmark - Christopher I, King of Denmark (1252-1259)
• England - Henry III, King of England (1216-1272)
• Flanders - Margaret II, Countess of Flanders (1244 - 1278)
• France - Louis IX, King of France (1226-1270)
• Gwynedd - Llywelyn the Last, Prince of Gwynedd (1246-1282)
• Holland - William II, Count of Holland (1235-1256)
• Hungary - Béla IV, King of Hungary (1235-1270)
• Navarre - Theobald II of Navarre, King of Navarre (1253-1270)
• Norway - Håkon IV, King of Norway (1217-1263)
• Poland - Boleslaus V, High Duke of Poland (1243 - 1279)
• Portugal - Alfonso III, King of Portugal (1249-1279)
• Scotland - Alexander III, King of Scotland (1249-1286)
• Sweden
  • Monarch - Valdemar I, King of Sweden (1250-1275)
  • Regent - Birger Jarl, regent of Sweden (1250-1266)

Middle East and North Africa

• Almohad Caliphate - Umar, Almohad Caliph (1248-1266)
• Antioch - Bohemund VI, Prince of Antioch (1252-1268)
• Armenia - Hethum I of Armenia, King of Armenia (1226-1270)
• Cyprus - Hugh II, King of Cyprus (1253-1268)
• Damascus - An-Nasir Yusuf, Ayyubid Sultan of Damascus (1250-1260)
• Egypt - Aybak, Sultan of Egypt (1254-1257)