List of state leaders in 98
AD 97 state leaders - Events of AD 98 - AD 99 state leaders - State leaders by year
Africa
Asia
Europe
- Athens - Coponius Maximus Agnoösius, Archon of Athens (98–99)
- Bosporan Kingdom - Tiberius Julius Sauromates I, Roman client King of Bosporus (90–123)
- Caucasian Iberia - Azork, King of Caucasian Iberia (87–106)
- Dacia - Decebalus, King of Dacia (87–106)
- Ireland - Túathal Techtmar, High King of Ireland (76–106)
- Roman Empire (Principate - Nervan-Antonian dynasty)
- Nerva, Roman Emperor (96–98)
- Trajan, Roman Emperor (98–117)
- Nerva, Consul (98)
- Trajan, Consul (98)
- Gnaeus Domitius Tullus, Consul suffectus (98)
- Sextus Julius Frontinus, Consul suffectus (98)
- Lucius Iulius Ursus, Consul suffectus (98)
- Titus Vestricius Spurinna, Consul suffectus (98)
- Gaius Pomponius Rufus Priscus Coelius Sparsus, Consul suffectus (98)
- Aulus Vicirius Martialis, Consul suffectus (98)
- Lucius Maecius Postumus, Consul suffectus (98)
- Gaius Pomponius Rufus Acilius Tuscus Coelius Sparsus, Consul suffectus (98)
- Gnaeus Pompeius Ferox Licinianus, Consul suffectus (98)
- Publis Iulius Lupus, Consul suffectus (98)
- Casperius Aelianus, Praetorian prefect (84–94, 96–98)
- Sextus Attius Suburanus, Praetorian prefect (98–101)
- Roman Britain (Britannia Province) - Tiberius Avidius Quietus, Roman governor (97–101)
- Ægyptus Province
- Judea (Iudaea Province)
Middle East