| Dates of Reign | Emperor |
|---|---|
| 27 B.C.–14 A.D. | Augustus (Gaius Julius Caesar Octavianus) |
| 14–37 | Tiberius (Tiberius Claudius Nero Caesar) |
| 37–41 | Caligula (Gaius Claudius Nero Caesar Germanicus). Grandnephew of Tiberius. |
| 41–54 | Claudius (Tiberius Claudius Nero Caesar Drusus) |
| 54–68 | Nero (Lucius Domitius Ahenobarbus Claudius Drusus). Son of Caligula's sister |
| 68–69 | Galba (Servius Sulpicius Galba) |
| 69 | Otho (Marcus Salvius Otho) |
| 69 | Vitellius (Aulus Vitellius Germanicus) |
| 69–79 | Vespasian (Titus Flavius Vespasianus) |
| 79–81 | Titus (Titus Flavius Vespasianus). Son of Vespasian. |
| 81–96 | Domitian (Titus Flavius Domitianus) |
| 96–98 | Nerva (Marcus Cocceius Nerva) |
| 98–117 | Trajan (Marcus Ulpius Nerva Trajanus) |
| 117–138 | Hadrian (Publius Aelius Traianus Hadrianus) |
| 138–161 | Antoninus Pius (Titus Aurelius Fulvius Boionius Arrius Antoninus Pius) |
| 161(147)–180 | Marcus Aurelius (Marcus Annius Aurelius Verus) |
| 161–169 | Lucius Aurelius Verus (Lucius Ceionius Commodus Verus) |
| 180(172)–192 | Commodus (Lucius Aelius Marcus Aurelius Antoninus Cornmodus) |
| 193 | Pertinax (Publius Helvius Pertinax) |
| 193 | Didius Julian (Marcus Didius Salvius Julianus Severus) |
| 193–211 | Septimius Severus (Lucius Septimius Severus) |
| 211(198)–217 | Caracalla (Marcus Aurelius Antoninus Bassianus Caracallus). Son of Septimius Severus. |
| 209–211 | Geta (Publius Septimius Geta). Son of Septimius Severus |
| 217–218 | Macrinus (Marcus Opellius Severus Macrinus) |
| 218 | Diadumenian (Marcus Opellius Diadumenianus). Son of Macrinius. |
| 218–222 | Elagabulus (Marcus Varius Avitus Bassianus Aurelius Antoninus Heliogabalus) |
| 222–235 | Severus Alexander (Marcus Alexianus Bassianus Aurelius Severus Alexander) |
| 235–238 | Maximinus (Gaius Julius Verus Maximinus "Thrax") |
| 237–238 | Gordian I (Marcus Antonius Gordianus) |
| 238 | Pupienus (Marcus Clodius Pupienus Maximnus) |
| 238 | Balbinus (Decimus Caelius Babbinus) |
| 238–244 | Gordian III (Marcus Antonius Gordianus) |
| 244–249 | Philip "Arabs" (Marcus Julius Philippus "Arabs") |
| 249–251 | Decius (Gaius Messius Quintus Traianus Decius) |
| 251–253 | Gallus (Gaius Vibius Trebonianus Gallus) |
| 252–253 | Aemilian (Marcus Julius Aemilius Aemilianus) |
| 253–259 | Valerian (Gaius Publius Licinius Valerianus) |
| 259(255)–268 | Gallien (Publius Licinius Egnatius Gallienus) |
| 268–270 | Claudius II (Marcus Aurelius Claudius Gothicus) |
| 270–275 | Aurelian (Lucius Domitius Aurelianus) |
| 275–276 | Tacitus (Marcus Claudius Tacitus) |
| 276 | Florian (Marcus Annius Florianus) |
| 276–282 | Probus (Marcus Aurelius Probus) |
| After 282, emperors were chosen by the troops without the consent of the Senate. | |
| 281–283 | Carus (Marcus Aurelius Carus) |
| 284–305 | Diocletian (Gaius Aurelius Valerius Diodes Jovius) |
| 286–305 | Maximian (Marcus Aurelius Valerius Maximianus Herculius) |
| 305(293)–306 | Constantius I (Flavius Valerius Constantius Chlorus) |
| 305(293)–311 | Galerius (Gaius Galerius Valerius Maximianus) |
| 306–307 | Severus (Flavius Valerius Severus) |
| 306–312 | Maxentius (Marcus Aurelius Valerius Maxentius) |
| 311(307)–324 | Licinius (Gaius Flavius Valerius Licinianus Licinius) |
| 311(306)–337 | Constantine I, the Great (Flavius Valerius Constantinus) |
| 337–340 | Constantine II (Flavius Valerius Claudius Constantinus) |
| 337–361 | Constantius II (Flavius Valerius Julius Constantius) |
| 337–350 | Constans (Flavius Valerius Julius Constans) |
| 361–363 | Julian, the Apostate (Flavius Claudius Julianus) |
| 363–364 | Jovian (Flavius Jovianus) |
| Western Emperors | Eastern Emperors | ||
|---|---|---|---|
| 364–375 | Valentinian I (Flavius Valentinianus). | 364–378 | Valens. Made co-Augustus by Valentinian I, his brother. |
| 375(367)–383 | Gratian (Flavius Gratianus Augustus). Son of Valentinian I. | ||
| 375–392 | Valentinian II (Flavius Valentinianus). Son of Valentinian I. Murdered by the Frankish comes Arbogast, who set up Eugenius. | ||
| 392–395 | Theodosius, the Great (Flavius Theodosius) | 379–395 | Theodosius, the Great |
| 383–388 | Maximus (Magnus Clemens Maximus). Proclaimed by the British legions; executed by Theodosius. | ||
| 392–394 | Eugenius (Flavius Eugenius). Slain in battle with Theodosius. | ||
| 395(393)–423 | Honorius (Flavius Honorius), youngest son of Theodosius. | 395(383)-408 | Arcadius, eldest son of Theodosius. |
| 421 | Constantius III (Flavius Constantius). | ||
| 423–425 | John (Johannes) | ||
| 425–454 | Valentinian III (Flavius Placidius Valentinianus | 408(402)-450 | Theodosius II, son of Arcadius. |
| 455 | Petronius (Flavius Ancius Petronius Maximus) | 450–457 | Marcian (Marcianus). Married Arcadius' daughter. |
| 455–456 | Avitus (Flavius Maecilius Eparchus Avitus) | ||
| 457–461 | Majorian (Julius Valerius Maioranus) | 457–474 | Leo I (Leo Thrax, Magnus) |
| 461–465 | Severus (Libius Severianus Severus) | ||
| 467–472 | Anthemius (Procopius Anthemius) | ||
| 472 | Olybrius (Anicius Olybrius) | ||
| 473–474 | Glycerius | ||
| 473–480 | Julius Nepos | 473–474 | Leo II. Grandson of Leo I. |
| 475–476 | Romulus Augustulus (Flavius Momyllus Romulus Augustus) Traditionally considered the last Roman emperor. | 474–491 | Zeno. See Byzantine Emperors for the continuation in the East. |
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Last revised: 5 November 2002.