List of state leaders in 51

AD 50 state leaders – Events of AD 51 – AD 52 state leaders – State leaders by year

Africa

• Kush – Amanitenmemide, King of Kush (c.50–62)

Asia

• China – Guangwu, Emperor of China (25–57)
• Japan (Legendary Emperors) – Suinin, Emperor of Japan (29 BC-AD 70)
• Korea (Three Kingdoms Period)
  • Baekje – Daru, King of Baekje (28–77)
  • Goguryeo – Mobon, King of Goguryeo (48–53)
  • Silla – Yuri, King of Silla (24–57)
• Kushan Empire – Kujula Kadphises, King of Kush (30–80)

Europe

• Bosporan Kingdom – Tiberius Julius Cotys I, Roman client King of Bosporus (46–63)
• Brigantes
  • Cartimandua, Queen of the Brigantes (43–69)
  • Venutius, King of the Brigantes (?–51, 69–?)
  • Vellocatus, King of the Brigantes (51–?)
• Caucasian Iberia – Pharsman, King of Caucasian Iberia (50–58)
• Iceni – Prasutagus, King of the Iceni (47–60)
• Ireland – Fíachu Finnolach, High King of Ireland (39–56)
• Regnenses – Tiberius Claudius Cogidubnus, King of the Britons (50–?) and King of the Regnenses (43–?)
• Roman Empire (Principate – Julio-Claudian dynasty)
  • Claudius, Roman Emperor (41–54)
  • Claudius, Consul (51)
  • Servius Cornelius Scipio Salvidienus Orfitus, Consul (51)
  • Lucius Calventius Vetus C. Carminius, Consul suffectus (51)
  • Vespasian, Consul suffectus (51)
  • Sextus Afranius Burrus, Praetorian prefect (50–62)
  • Roman Britain (Britannia Province) – Publius Ostorius Scapula, Roman governor (47–52)
  • Ægyptus Province – Gnaeus Vergilius Capito, Roman Prefect (48–52)
  • Judea (Iudaea Province)
    • Ventidius Cumanus, Roman Procurator (48–52)
    • Agrippa II, Tetrarch of Chalcis (48–53)
    • Shimon ben Gamliel, Nasi of the Sanhedrin (50–70)
    • Ananias ben Nebedeus, High Priest of Judea (46–52)
  • Syria Province – Gaius Ummidius Durmius Quadratus, Roman governor (50–60)

Middle East

• Adiabene
  • Helena, Queen of Adiabene (30–58)
  • Izates bar Monobaz, King of Adiabene (34–55)
• Armenia
  • Mithridates, King of Armenia (Roman protectorate) (35–37, 42–51)
  • Rhadamistus, King of Armenia (Roman protectorate) (51–53, 53–54)
• Commagene – Antiochus IV, King of Commagene (38, 41–72)
• Nabatea – Malichus II, King of Nabatea (40–70)
• Osroene – Ma'nu V, King of Osroene (50–57)
• Parthian Empire
  • Gotarzes II, Great King (Shah) of Parthia (40–51)
  • Sanabares, Great King (Shah) of Parthia (50–65)
  • Vonones II, Great King (Shah) of Parthia (51)
  • Vologases I, Great King (Shah) of Parthia (51–78)
• Pontus – Polemon II, King of Pontus (38–64)