List of state leaders in 142

AD 141 state leaders – Events of AD 142 – AD 143 state leaders – State leaders by year

Africa

• Kush – Takideamani, King of Kush (140–155)

Asia

• China – Shun, Emperor of China (125–144)
• Korea (Three Kingdoms Period)
  • Baekje – Gaeru, King of Baekje (128–166)
  • Goguryeo – Taejo, King of Goguryeo (53–146)
  • Silla – Ilseong, King of Silla (134–154)

Europe

• Armenia
  • Aurelios Pocoros, King of Armenia (?–144)
  • Sohaemus, King of Armenia (140–161, 163–?)
• Athens
  • Publius Aelius Phileas Meliteus, Archon of Athens (141–142)
  • Aelius Alexandrus Phalereus, Archon of Athens (142–143)
• Bosporan Kingdom – Tiberius Julius Rhoemetalces, Roman client King of Bosporus (132–153)
• Caucasian Iberia
  • Pharasmanes II, King of Caucasian Iberia (116–142)
  • Radamist, King of Caucasian Iberia (142–145)
• Ireland – Conn of the Hundred Battles, High King of Ireland (122–157)
• Roman Empire (Principate – Nervan-Antonian dynasty)
  • Antoninus Pius, Roman Emperor (138–161)
  • Lucius Cuspius Pactumeius Rufinus, Consul (142)
  • Lucius Statius Quadratus, Consul (142)
  • Castus, Consul suffectus (142)
  • Marcus Cornelius Fronto, Consul suffectus (142)
  • Lucius Laberius Priscus, Consul suffectus (142)
  • Lucius Tusidius Campester, Consul suffectus (142)
  • Quintus Cornelius Senecio Annianus, Consul suffectus (142)
  • Iulianus, Consul suffectus (142)
  • Marcus Gavius Maximus, Praetorian prefect (136–156)
  • Marcus Petronius Mamertinus, Praetorian prefect (139–143)
  • Roman Britain (Britannia Province) – Quintus Lollius Urbicus, Roman governor (138–144)
  • Ægyptus Province
    • Gaius Avidius Heliodorus, Roman Prefect (137–142)
    • Gaius Valerius Eudemon, Roman Prefect (142–143)
  • Syria Palaestina Province
    • Interregnum in Nasi of the Sanhedrin (120–142)
    • Shimon ben Gamliel II, Nasi of the Sanhedrin (142–165)
• Ulaid – Tipraiti Tireach, King of the Ulaid (136–187)

Middle East

• Characene – Meredates, King of Characene (131–151)
• Osroene – Ma'nu VIII, King of Osroene (139–163, 165–167)
• Parthian Empire – Vologases III, Great King (Shah) of Parthia (105–147)