List of state leaders in 1257

1256 state leaders - Events of 1257 - 1258 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 - Emperor Go-Fukakusa, emperor of Japan (1246-1260)
** Shogun (Kamakura) - Prince Munetaka, Shogun of Japan (1252-1266)
** Shikken - Hōjō Nagatoki, Shikken (1256-1264)
*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)
*#Pho Khun Ban Muang, King of Sukhothai (1257 - 1277)

Europe

*Achaea - William II Villehardouin, Principality of Achaea (1246 - 1278)
*Angouleme - Hugh II, Count of Angouleme (1249 - 1260)
*Aragon - James I, King of Aragon (1213-1276)
*Blue Horde - Ulaghchi (1257), Berke Khan, Khans of the Blue Horde (1257 - 1267)
*Bohemia - Ottokar II, King of Bohemia (1253 - 1278)
*Brittany - John I, Duke of Brittany (1237 - 1286)
*Bulgaria -
*#Mitso Asen, Tsar of Bulgaria (1256-1257)
*#Constantine Tikh, Tsar of Bulgaria (1257 - 1277)
*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)
*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)
**Holland - Floris V, Count of Holland (1256 - 1296)
*Hungary - Béla IV, King of Hungary (1235 - 1270)
*Lithuania - Mindaugas, King of Lithuania (1253-1263)
*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

*Antioch - Bohemund VI, Prince of Antioch (1252 - 1268)
*Armenia - Hethum I of Armenia, King of Armenia (1226 - 1270)
*Cyprus - Hugh II, King of Cyprus (1253-1267)
*Egypt -
*# Aybak, Sultan of Egypt (1254-1257)
*# Nur ad-Din Ali, Sultan of Egypt (1257-1259)
*Ilkhanate - Hülëgü, Ilkhan (1256-1265)