List of state leaders in 139

AD 138 state leaders – Events of AD 139 – AD 140 state leaders – State leaders by year

Africa

• Kush – Adeqetali, King of Kush (134–140)

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

• Athens
  • Praxagoras Thoricius, Archon of Athens (138–139)
  • Flavius Alcibiades Paianieus, Archon of Athens (139–140)
• Bosporan Kingdom – Tiberius Julius Rhoemetalces, Roman client King of Bosporus (132–153)
• Caucasian Iberia – Pharasmanes II, King of Caucasian Iberia (116–142)
• Ireland – Conn of the Hundred Battles, High King of Ireland (122–157)
• Roman Empire (Principate – Nervan-Antonian dynasty)
  • Antoninus Pius, Roman Emperor (138–161)
  • Antoninus Pius, Consul (139)
  • Gaius Bruttius Praesens, Consul (139)
  • Scapula, Consul suffectus (139)
  • Marcus Ceccius Justinus, Consul suffectus (139)
  • Gaius Iulius Bassus, Consul suffectus (139)
  • 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)
  • Syria Palaestina Province – Interregnum in Nasi of the Sanhedrin (120–142)
• Ulaid – Tipraiti Tireach, King of the Ulaid (136–187)

Middle East

• Characene – Meredates, King of Characene (131–151)
• Osroene
  • Ma'nu VII, King of Osroene (123–139)
  • Ma'nu VIII, King of Osroene (139–163, 165–167)
• Parthian Empire
  • Vologases III, Great King (Shah) of Parthia (105–147)
  • Mithridates IV, Great King (Shah) of Parthia (129–140)