List of state leaders in 198

197 state leaders – Events of AD 198 – AD 199 state leaders – State leaders by year

Africa

• Kush – Amanikhareqerem, King of Kush (190–200)

Asia

• China – Xian, Emperor of China (189–220)
• Korea (Three Kingdoms Period)
  • Baekje – Chogo, King of Baekje (166–214)
  • Goguryeo – Sansang, King of Goguryeo (197–227)
  • Silla – Naehae, King of Silla (196–230)

Europe

• Armenia – Tiridates II, King of Armenia (197–238)
• Bosporan Kingdom – Tiberius Julius Sauromates II, Roman client King of Bosporus (174–211)
• Caucasian Iberia – Rev I, King of Caucasian Iberia (189–216)
• Ireland – Lugaid mac Con, High King of Ireland (195–225)
• Roman Empire (Principate – Severan dynasty)
  • Septimius Severus, Roman Emperor (193–211)
  • Caracalla, Roman Emperor (198–217)
  • Publius Martius Sergius Saturninus, Consul (198)
  • Lucius Aurelius Gallus, Consul (198)
  • Gaius Fulvius Plautianus, Praetorian prefect (197–205)
  • Ægyptus Province – Quintus Aemilius Saturninus, Roman Prefect (197–200)
  • Roman Britain (Britannia Province) – Virius Lupus, Roman governor (197–201)
  • Syria Palaestina Province – Judah haNasi, Nasi of the Sanhedrin (165–220)
  • Lower Moesia Province
    • Cosconius Gentianus, Roman governor (195–198)
    • Gaius Ovinius Tertullus, Roman governor (198–201)

Middle East

• Adiabene – Narsai, Parthian client King of Adiabene (170–200)
• Characene – Maga, King of Characene (195–210)
• Osroene – Abgar IX, King of Osroene (177–212)
• Parthian Empire – Vologases V, Great King (Shah) of Parthia (191–208)