Index Imperatorum Romanorum

The Principate

Julio-Claudian dynasty

#	Bust	Coin	Names and Reign	Territory
1			Augustus GAIVS OCTAVIVS GAIVS IVLIVS CAESAR IMPERATOR CAESAR AVGVSTVS 27 BC–AD 14
2			Tiberius TIBERIVS CLAVDIVS NERO TIBERIVS IVLIVS CAESAR TIBERIVS CAESAR AVGVSTVS AD 14–37
3			Caligula GAIVS IVLIVS CAESAR GAIVS CAESAR GERMANICVS GAIVS CAESAR AVGVSTVS GERMANICVS AD 37–41
4			Claudius TIBERIVS CLAVDIVS NERO TIBERIVS CLAVDIVS CAESAR AVGVSTVS GERMANICVS AD 41–54
5			Nero LVCIVS DOMITIVS AHENOBARBVS NERO CLAVDIVS CAESAR DRVSVS GERMANICVS NERO CLAVDIVS CAESAR AUGVSTVS GERMANICVS AD 54–68

Year of the Four Emperors and Flavian dynasty

#	Bust	Coin	Names and Reign
6			Galba SERVIVS SVLPICIVS GALBA SERVIVS GALBA CAESAR AVGVSTVS AD 68–69
7			Otho MARCVS SALVIVS OTHO IMPERATOR MARCVS OTHO CAESAR AVGVSTVS AD 69
8			Vitellius AVLUS VITELLIVS AVLVS VITELLIVS GERMANICVS IMP. CAES. AVGVSTVS AD 69
9			Vespasian TITVS FLAVIVS VESPASIANVS IMPERATOR CAESAR VESPASIANVS AVGVSTVS AD 69–79
10			Titus TITVS FLAVIVS VESPASIANVS IMPERATOR TITVS CAESAR VESPASIANVS AVGVSTVS AD 79–81
11			Domitian TITVS FLAVIVS DOMITIANVS IMPERATOR CAESAR DOMITIANVS AVGVSTVS AD 81–96

Nerva–Antonine dynasty

	Bust	Coin	Names and Reign	Territory
12			Nerva Marcus Cocceius Nerva Imperator Nerva Caesar Augustus 96–98
13			Trajan Marcus Ulpius Traianus Imperator Caesar Nerva Traianus Augustus 98–117
14			Hadrian Publius Aelius Hadrianus Imperator Caesar Traianus Hadrianus Augustus 117–138
15			Antoninus Pius Titus Aurelius Fulvus Boionius Arrius Antoninus Titus Aelius Caesar Antoninus Titus Aelius Hadrianus Antoninus 138–161
17			Lucius Verus Lucius Ceionius Commodus Lucius Aelius Aurelius Commodus Lucius Aurelius Verus 161–169
18			Marcus Aurelius Marcus Annius Verus Marcus Aelius Aurelius Verus Marcus Aurelius Antoninus 161–180
19			Commodus Lucius Aurelius Commodus Lucius Aelius Aurelius Commodus 180–192

Year of the Five Emperors

Bust	Coin	Names and Reign
		Pertinax Publius Helvius Pertinax 193
		Didius Julianus Marcus Didius Julianus 193
		Pescennius Niger 193–194 (usurper)
		Clodius Albinus 193–197 (usurper)

Severan Dynasty and usurpers

Bust	Coin	Names and Reign
		Septimius Severus Lucius Septimius Severus 193–211
		Publius Septimius Geta 211
		Caracalla Lucius Septimius Bassianus Marcus Aurelius Antoninus 211–217
		Macrinus Marcus Opellius Macrinus 217–218
		Diadumenian Marcus Opellius Diadumenianus M. Op. Antoninus Diadumenianus 218 (child co-emperor)
		Elagabalus Varius Avitus Bassianus Marcus Aurelius Antoninus 218–222
		Severus Alexander ... Bassianus Alexianus M. Aurelius Severus Alexander 222–235

Crisis of the Third Century

1. Maximinus I Thrax
2. Gordian I
3. Gordian II
4. Pupienus
5. Balbinus
6. Gordian III
7. Philippus I
8. Philippus II
9. Decius
10. Etruscus
11. Hostilian
12. Gallus
13. Volusianus
14. Aemilianus
15. Valerian
16. Gallienus
17. Saloninus
18. Claudius II Gothicus
19. Quintillus
20. Aurelian
21. Tacitus
22. Florianus
23. Probus
24. Carus
25. Carinus
26. Numerian

Usurpers

• Sabinianus
• Pacatianus
• Jotapian
• Silbannacus
• Saturninus
• Proculus
• Regalianus
• Macrianus Minor
• Quietus

Gallic Empire

• Postumus
• Laelianus
• Marius
• Victorinus
• Domitianus
• Tetricus I

Britannic Empire

• Carausius
• Allectus

The Dominate

Eastern Tetrarchs

• Diocletianus
• Galerius
• Maximinus II Daza
• Licinius
• Martinianus

Western Tetrarchs

• Maximianus
• Constantius I Chlorus
• Valerius Severus
• Maxentius
• (Licinius)
• Valerius Valens

Constantinian dynasty

• Constantinus I
• Constantinus II
• Constans
• Magnentius
• Vetranio
• Nepotianus
• Constantius II
• Julianus II
• Iovianus

Valentinian dynasty

• Valentinianus I
• Gratianus
• Procopius
• Valentinian II
• Magnus Maximus
  • Victor
• Eugenius
• Theodosius I

Western Empire

• Honorius
  • Priscus Attalus
  • Constantine III
  • Constans II
  • Jovinus
  • Constantius III
• Joannes
• Valentinian III
• Petronius Maximus
• Avitus
• Majorian
• Libius Severus
• Anthemius
• Olybrius
• Glycerius
• Julius Nepos
• Romulus Augustus

Eastern Empire

• Arcadius (395–408)
• Theodosius II (408–450)
• Marcian (450–457)
• Leo I (457–474)
• Leo II (474)
• Zeno (474–491)
• Basiliscus (475–476)
• Zeno (restored) (476–491)

For continuation, see: Byzantine emperors