List of state leaders in 121

AD 120 state leaders – Events of AD 121 – AD 122 state leaders – State leaders by year

Africa

• Kush – Tamelerdeamani, King of Kush (114–134)

Asia

• China – An, Emperor of China (106–125)
• Korea (Three Kingdoms Period)
  • Baekje – Giru, King of Baekje (77–128)
  • Goguryeo – Taejo, King of Goguryeo (53–146)
  • Silla – Jima, King of Silla (112–134)

Europe

• Bosporan Kingdom – Tiberius Julius Sauromates I, Roman client King of Bosporus (90–123)
• Caucasian Iberia – Pharasmanes II, King of Caucasian Iberia (116–142)
• Ireland – Cathair Mór, High King of Ireland (119–122)
• Roman Empire (Principate – Nervan-Antonian dynasty)
  • Hadrian, Roman Emperor (117–138)
  • Marcus Annius Verus, Consul (121)
  • Gnaeus Arrius Augur, Consul (121)
  • Marcus Herennnius Faustus, Consul suffectus (121)
  • Quintus Pomponius Marcellus, Consul suffectus (121)
  • Titus Pomponius Antistianus Funisulanus Vettonianus, Consul suffectus (121)
  • Lucius Pomponius Silvanus, Consul suffectus (121)
  • Marcus Statorius Secundus, Consul suffectus (121)
  • Lucius Sempronius Merula Auspicatus, Consul suffectus (121)
  • Gaius Septicius Clarus, Praetorian prefect (119–121)
  • Marcius Turbo, Praetorian prefect (119–?)
  • Roman Britain (Britannia Province) – Quintus Pompeius Falco, Roman governor (118–122)
  • Ægyptus Province – Titus Haterius Nepos, Roman Prefect (120–124)
  • Judea (Iudaea Province) – Interregnum in Nasi of the Sanhedrin (120–142)

Middle East

• Osroene
  • Yalur, King of Osroene (118–122)
  • Parthamaspates of Parthia, King of Osroene (118–123)
• Parthian Empire
  • Vologases III, Great King (Shah) of Parthia (105–147)
  • Osroes I, Great King (Shah) of Parthia (109–129)