List of state leaders in 366

365 state leaders - Events of AD 366 - AD 367 state leaders - State leaders by year

Asia

• China (Sixteen Kingdoms Period)
  • Eastern Jin Dynasty - Emperor Fei, Emperor of China (365–372)
  • Former Liang - Zhang Tianxi, Emperor of Former Liang (363-376)
  • Former Yan - Murong Wei, Emperor of Former Yan (360-370)
  • Former Qin - Fú Jiān, Emperor of Former Qin (357-385)
• Gupta Empire – Samudragupta, Gupta Emperor of India (335-380)
• Japan (Ancient period) - Emperor Nintoku, emperor of Japan (c.313-c.399 traditional dates)
• Korea (Three Kingdoms Period)
  • Baekje - Geunchogo, King of Baekje (346-375)
  • Goguryeo - Gogugwon, King of Goguryeo (331-371)
  • Silla - Naemul, King of Silla (356-402)
• Kushan Empire – Kipunada, Emperor of the Kushans (c.350-375)
• Pallava - Kumaravisnu I, King of Pallava (355-370)

Europe

• Roman Empire -
  1. Valentinian I, Roman Emperor (364-375)
  2. Valens, Roman Emperor (364-378)

Middle East

• Armenia (Arsacid Dynasty) - Arshak II, King of Armenia (350-367)
• Iberia (Chosroid Dynasty) - Mihrdat II, King of Iberia (365-380)
• Persia (Sassanid Dynasty) - Shapur II, Great King of Persia (310-379)