List of state leaders in 42

This is a list of heads of state, government leaders, and other rulers in the year 42.

Africa

• Kush – Amanitaraqide, King of Kush (c.40–50)

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)
  • Gaya – Suro of Geumgwan Gaya(42~157)
• Kushan Empire – Kujula Kadphises, King of Kush (30–80)

Europe

• Bosporan Kingdom – Tiberius Julius Mithridates, Roman client King of Bosporus (38–46)
• Catuvellauni – Togodumnus, King of the Catuvellauni (40–43)
• Caucasian Iberia – Mithridates, King of Caucasian Iberia (30–50)
• Ireland – Fíachu Finnolach, High King of Ireland (39–56)
• Odrysian kingdom
  • Rhoemetalces III, Odrysian King of Thrace (38–46)
  • Pythodoris II, Odrysian Queen of Thrace (38–46)
• Roman Empire (Principate – Julio-Claudian dynasty)
  • Claudius, Roman Emperor (41–54)
  • Claudius, Consul (42)
  • Gaius Caecina Largus, Consul (42)
  • Cestius Gallus, Consul suffectus (42)
  • Cornelius Lupus, Consul suffectus (42)
  • Rufrius Pollio, Praetorian prefect (41–43)
  • Catonius Justus, Praetorian prefect (41–43)
  • Ægyptus Province
    • Lucius Aemilius Rectus, Roman Prefect (41–42)
    • Marcus Aevius, Roman Prefect (42–45)
  • Judea (Iudaea Province)
    • Agrippa I, King of Judaea (41–44)
    • Gamaliel, Nasi of the Sanhedrin (30–50)
    • Simon Cantatheras ben Boethus, High Priest of Judea (41–43)
  • Syria Province
    • Publius Petronius, Roman Prefect (39–42)
    • Gnaeus Vibius Marcus, Roman Prefect (41–45)

Middle East

• Adiabene
  • Helena, Queen of Adiabene (30–58)
  • Izates bar Monobaz, King of Adiabene (34–55)
• Armenia
  • Orodes, King of Armenia (Parthian protectorate) (35, 37–42)
  • Mithridates, King of Armenia (Roman protectorate – restored) (35–37, 42–51)
• Characene – Attambalos III, King of Characene (37–45)
• Commagene – Antiochus IV, King of Commagene (38, 41–72)
• Nabatea – Malichus II, King of Nabatea (40–70)
• Osroene – Abgar V of Edessa, King of Osroene (4 BC–7 AD, 13–50)
• Parthian Empire
  • Vardanes I, Great King (Shah) of Parthia (40–47)
  • Gotarzes II, Great King (Shah) of Parthia (40–51)
• Pontus – Polemon II, King of Pontus (38–64)