List of state leaders in 31

This is a list of heads of state, government leaders, and other rulers in the year 31.

Africa

• Kush – Pisakar, King of Kush (c.30–40)
• Mauretania – Ptolemy, King of Mauretania (23–40)

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 – Daemusin, King of Goguryeo (18–44)
  • Silla – Yuri, King of Silla (24–57)
• Kushan Empire – Kujula Kadphises, King of Kush (30–80)

Europe

• Atrebates – Verica, King of the Atrebates (15–40)
• Bosporan Kingdom – Tiberius Julius Aspurgus, Roman client King of Bosporus (8 BC–38 AD)
• Cantiaci – Adminius, King of the Cantiaci (30–40)
• Catuvellauni – Cunobelinus, King of the Britons and King of the Catuvellauni (9–40)
• Caucasian Iberia – Mithridates, King of Caucasian Iberia (30–50)
• Ireland – Feradach Finnfechtnach, High King of Ireland (14–36)
• Odrysian kingdom
  • Rhoemetalces II, Odrysian King of Thrace (18–38)
  • Antonia Tryphaena, Odrysian Queen of Thrace (18–38)
• Roman Empire (Principate – Julio-Claudian dynasty)
  • Tiberius, Roman Emperor (14–37)
  • Tiberius, Consul (31)
  • Sejanus, Consul (31)
  • Faustus Cornelius Sulla, Consul suffectus (31)
  • Sextus Tedius Valerius Catullus, Consul suffectus (31)
  • Lucius Fulcinius Trio, Consul suffectus (31)
  • Publius Memmius Regulus, Consul suffectus (31)
  • Sejanus, Praetorian prefect (14–31)
  • Naevius Sutorius Macro, Praetorian prefect (31–38)
  • Ægyptus Province
    • Gaius Valerius, Roman Prefect (16–31)
    • Gaius Vitrasius Pollio, Roman Prefect (31–32)
  • Judea (Iudaea Province)
    • Pontius Pilate, Roman Prefect (26–36)
    • Herod Antipas, Tetrarch of Galilee (4 BC–39 AD)
    • Herod Philip I, Tetrarch of Batanaea (4 BC–34 AD)
    • Herod Philip II, Tetrarch of Ituraea and Trachonitis (4 BC–34 AD)
    • Gamaliel, Nasi of the Sanhedrin (30–50)
    • Caiaphas, High Priest of Judea (18–36)
  • Syria Province – Lucius Aelius Lamia, Roman Prefect (22–32)

Middle East

• Adiabene – Helena, Queen of Adiabene (30–58)
• Armenia – Artaxias III, King of Armenia (Roman protectorate) (18–34)
• Commagene – Interregnum – Roman rule (17–38)
• Nabatea – Aretas IV Philopatris, King of Nabatea (9 BC–40 AD)
• Osroene – Abgar V of Edessa, King of Osroene (4 BC–7 AD, 13–50)
• Parthian Empire – Artabanus III, Great King (Shah) of Parthia (10–35, 36–38)
• Pontus – Pythodorida, King of Pontus (8 BC–38 AD)