List of state leaders in 1278
1277 state leaders - Events of 1278 - 1279 state leaders - State leaders by year
Asia
- China (Southern Song Dynasty) -
- Goryeo (Korea) - King Chungnyeol of Goryeo, King of Goryeo (1274 - 1308)
- Japan
- Monarch - Go-Uda, Emperor of Japan (1274-1287)
- Shogun (Kamakura) - Prince Koreyasu, Shogun of Japan (1266-1289)
- Shikken - Hojo Tokimune, Shikken (1268-1284)
- Khmer Empire - Jayavarman VIII (1243 - 1295)
- Mongol Empire - Kublai Khan, Mongol Khan (1260-1294)
- Sukhothai - Ramkhamhaeng, King of Sukhothai (1277 - 1317)
Europe
- Bulgaria - Ivailo, King of Bulgaria (1277-1279)
- Castile - Alfonso X, King of Castile and Leon (1252-1284)
- Denmark - Eric V, King of Denmark (1259-1286)
- England - Edward I, King of England (1272-1307)
- France - Philip III, King of France (1270-1285)
- Gwynedd - Llywelyn the Last, Prince of Gwynedd (1246-1282)
- Navarre - Joan I, Queen of Navarre (1274-1305)
- Norway - Magnus VI, King of Norway (1263-1280)
- Poland - Boleslaus V, High Duke of Poland (1243-1279)
- Scotland - Alexander III, King of Scotland (1249-1286)
- Serbia - Stefan Dragutin, King of Serbia (1276-1282)
- Sweden - Magnus I, King of Sweden (1275-1290)
- Wallachia - Bărbat, Prince of Wallachia (c.1277-c.1290)
Middle East and North Africa
- Armenia - Leo III of Armenia, King of Armenia (1270 - 1289)
- Cyprus - Hugh III, King of Cyprus (1268-1284)
- Egypt - Baraka Khan, Sultan of Egypt (1277-1280)
- Ilkhanate - Abaqa, Il Khan of Persia (1265-1281)
- Tripoli - Bohemund VII, Count of Tripoli (1275 - 1287)