List of state leaders in 1257

This is a list of heads of state, government leaders, and other rulers in the year 1257.

Asia

• China (Southern Song dynasty) - Emperor Lizong (1224–1264)
• Korea (Goryeo Kingdom) – Gojong (1213–1259)
• Japan (Kamakura period)
  • Monarch – Emperor Go-Fukakusa (1246–1260)
  • Kamakura shogunate - Prince Munetaka (1252–1266)
  • Shikken - Hōjō Nagatoki (1256–1264)
• Khmer Empire – Jayavarman VIII (1243–1295)
• Mongol Empire – Möngke Khan (1251–1260)
• Pagan Kingdom – Narathihapate (1254–1287)
• Sukhothai Kingdom –
  1. Sri Indraditya (1249–1257)
  2. Ban Mueang (1257–1277)

Europe

• Principality of Achaea – William II of Villehardouin (1246–1278)
• County of Angoulême – Hugh II (1249–1260)
• Kingdom of Aragon – James I (1213–1276)
• Blue Horde – Ulaghchi (1257), Berke Khan (1257–1267)
• Kingdom of Bohemia – Ottokar II (1253–1278)
• Duchy of Brittany – John I (1237–1286)
• Bulgarian Empire –
  1. Mitso Asen, Tsar of Bulgaria (1256–1257)
  2. Constantine Tikh, Tsar of Bulgaria (1257–1277)
• Crown of Castile – Alfonso X (1252–1284)
• County of Champagne – Theobald V (1253–1270)
• Kingdom of Denmark – Christopher I (1252–1259)
• Kingdom of England – Henry III (1216–1272)
• County of Flanders – Margaret II (1244–1278)
• 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)
• Kingdom of Lithuania – Mindaugas (1253–1263)
• Kingdom of Navarre – Theobald II (1253–1270)
• Kingdom of Norway – Haakon IV (1217–1263)
• Duchy of Poland – Bolesław V the Chaste, High Duke of Poland (1243–1279)
• Kingdom of Portugal and the Algarves – 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)

Middle East and North Africa

• Principality of Antioch – Bohemond VI (1252–1268)
• Armenian Kingdom of Cilicia – Hethum I (1226–1270)
• Kingdom of Cyprus – Hugh II (1253–1267)
• Mamluk Sultanate of Egypt –
  1. Aybak (1254–1257)
  2. Al-Mansur Ali (1257–1259)
• Ilkhanate – Hulagu Khan (1256–1265)
• Sultanate of Rûm – Kaykaus II (1246–1262)
• Karamanids – Karaman Bey (1257–1261)
• Empire of Trebizond – Manuel I (1238–1263)