List of state leaders in 308

This is a list of heads of state, government leaders, and other rulers in the year 308.

Asia

• Armenia - Tiridates III, King of Armenia (287–330)
• China (Western Jin Dynasty)
  • Emperor Huai, Emperor of China (307 - 313)
• Korea (Three Kingdoms Period)
  • Baekje - Biryu, King of Baekje (304–344)
  • Goguryeo - Micheon, King of Goguryeo (300–331)
  • Silla - Girim, King of Silla (298–310)

Europe

• Western Roman Empire
  • Licinius, Western Roman Emperor, actual rule in Thrace, Macedonia and Illyria (308–324)
    • Constantine I, Western Roman Emperor in Gaul, Spain and Britain (306–337)
  • Not recognized: Maxentius, Roman Emperor in Italy (306–312)
    • Maximian, Roman Emperor in Italy (286–305, 307–308)
  • Pretender: Domitius Alexander in Africa (308)

Middle East

• Eastern Roman Empire
  • Galerius, Eastern Roman Emperor (305–311)
    • Maximinus Daia, Eastern Roman Emperor (308–313)
• Persia (Sassanid Dynasty)
  • Hormizd II, Great King of Persia (302 - 309)