List of Roman emperors

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This is a list of the Roman emperors:

Emperor of
the Roman Empire
Former Monarchy
Vexilloid of the Roman Empire.svg
Vexillum of the emperor
Augustus Bevilacqua Glyptothek Munich 317.jpg
First to command
16 January 27 BC – 19 August AD 14
First monarch Augustus
Last monarch Theodosius I (Unified or Classical),
Julius Nepos (Western),
Constantine XI (Eastern)
Style Imperator, Augustus, Caesar, Princeps, Dominus Noster, Autokrator or Basileus (depending on period)
His Imperial Majesty (formal)
Appointer Roman Senate (officially) and/or Roman Military
Monarchy started 16 January 27 BC
Monarchy ended 17 January 395 AD (Unified or Classical),
22 June 480 AD (Western),
29 May 1453 AD (Eastern)
Current pretender none
  1. Augustus
  2. Tiberius, Augustus's son-in-law.
  3. Caligula, Tiberius's grand-nephew, murdered by his bodyguards for many crimes.
  4. Claudius, Caligula's uncle. Claudius conquered Britain, making it part of the Roman Empire.
  5. Nero, Claudius's grand-nephew. Accused Christians of burning down Rome. First Roman Emperor to commit suicide.
  1. Galba, military leader under Claudius.
  2. Otho, friend of Nero.
  3. Vitellius, military leader under Galba. Vitellius banned astrologers from Rome.
  1. Vespasian, military leader under Claudius. Vespasian began the building of the Colosseum.
  2. Titus, Vespasian's son. Titus finished building the Colosseum.
  3. Domitian, Titus's younger brother. Domitian conquered southern Scotland, making it (temporarily) part of the Roman Empire.
  1. Nerva, friend of Nero, who had saved Nero's life.
  2. Trajan. Under Trajan, the Roman Empire was at its largest size ever.
  3. Hadrian - Hadrian built Hadrian's Wall in Britain, to prevent the Picts from invading Roman Britain. Hadrian died in 138 AD. From 138 AD until 284 AD, there were 32 more emperors.
  4. Antoninus Pius
  5. Lucius Verus
  6. Marcus Aurelius
  7. Commodus
  1. Diocletian in 284 AD, created the tetrarchy, abdicated.
  2. Maximian
  3. Galerius
  4. Constantius Chlorus
  5. Valerius Severus
  6. Constantine in 306 AD. Moved capital to Byzantium, now Constantinople. Converted to Christianity.
  7. Maxentius
  8. Licinius
  9. Maximinus II
  10. Constantine II, son of Constantine
  11. Constantius II, son of Constantine
  12. Constans I, son of Constantine
  13. Vetranio
  14. Julian
  15. Jovian
  • Valentinian dynasty
  • Theodosian dynasty
  1. Theodosius I in 395 AD. He split the Roman Empire into two parts. The western part lasted until 476 AD, when it became ruled by the Germanic people. The eastern part lasted until 1453, when it became part of the Ottoman/Turkish Empire.

Note there were also numerous usurpers ("fake" emperors) including:

  1. Domitianus II (usurper)