| Emperor |
Reign |
| Augustus (Imp. Caesar Augustus) |
27 BC-AD 14 |
| Tiberius (Ti. Caesar Augustus) |
AD 14-37 |
| Gaius / Caligula (C. Caesar Augustus Germanicus) |
37-41 |
| Claudius (Ti. Claudius Caesar Augustus Germanicus) |
41-54 |
| Nero (Imp. Nero Claudius Caesar Augustus Germanicus) |
54-68 |
| Galba (Ser. Sulpicius Galba Imp. Caesar Augustus) |
68-69 |
| Otho (Imp. M. Otho Caesar Augustus) |
69 |
| Vitellius (A. Vitellius Augustus Germanicus Imp.) |
69 |
| Vespasian (Imp. Caesar Vespasianus Augustus) |
69-79 |
| Titus (Imp. Titus Caesar Vespasianus Augustus) |
79-81 |
| Domitian (Imp. Caesar Domitianus Augustus) |
81-96 |
| Nerva (Imp. Caesar Nerva Augustus) |
96-98 |
| Trajan (Imp. Caesar Nerva Traianus Augustus) |
98-117 |
| Hadrian (Imp. Caesar Traianus Hadrianus Augustus) |
117-138 |
| Antoninus Pius (Imp. Caesar T. Aelius Hadrianus Antoninus Augustus Pius) |
138-161 |
| Marcus Aurelius (Imp. Caesar M. Aurelius Antoninus Augustus) |
161-180 |
| Lucius Verus (Imp. Caesar L. Aurelius Verus Augustus) |
161-169 |
| Commodus (Imp. Caesar M. Aurelius Commodus Antoninus Augustus) |
176-192 |
| Pertinax (Imp. Caesar P. Helvius Pertinax Augustus) |
193 |
| Didius Julianus (Imp. Caesar M. Didius Severus Julianus Augustus) |
193 |
| Septimius Severus (Imp. Caesar L. Septimius Severus Pertinax Augustus) |
193-211 |
| Clodius Albinus (Imp. Caesar D. Clodius Septimius Albinus Augustus) |
193-197 |
| Pescennius Niger (Imp. Caesar C. Pescennius Niger Justus Augustus) |
193-194 |
| Caracalla (Imp. Caesar M. Aurelius Antoninus Augustus) |
198-217 |
| Geta (Imp. Caesar P. Septimius Geta Augustus) |
209-211 |
| Macrinus (Imp. Caesar M. Opellius Macrinus Augustus) |
217-218 |
| Diadumenianus (Imp. Caesar M. Opellius Antoninus Diadumenianus Augustus) |
218 |
| Elagabal (Imp. Caesar M. Aurelius Antoninus Augustus) |
218-222 |
| Severus Alexander (Imp. Caesar M. Aurelius Severus Alexander Augustus) |
222-235 |
| Maximinus (Imp. Caesar C. Julius Verus Maximinus Augustus) |
235-238 |
| Gordian I (Imp. Caesar M. Antonius Gordianus Sempronianus Romanus Africanus
Senior Augustus) |
238 |
| Gordian II (Imp. Caesar M. Antonius Gordianus Sempronianus Africanus Iunior
Augustus) |
238 |
| Balbinus (Imp. Caesar D. Caelius Calvinus Balbinus Augustus) |
238 |
| Pupienus (Imp. Caesar M. Clodius Pupienus Augustus) |
238 |
| Gordian III (Imp. Caesar M. Antonius Gordianus Augustus) |
238-244 |
| Philip (Imp. Caesar M. Julius Philippus Augustus) |
244-249 |
| Decius (Imp. Caesar C. Messius Quintus Traianus Decius Augustus) |
249-251 |
| Trebonianus Gallus (Imp. Caesar C. Vibius Trebonianus Gallus Augustus) |
251-253 |
| Volusianus (Imp. Caesar C. Vibius Afinius Gallus Veldumianus Volusianus Augustus) |
251-253 |
| Aemilianus (Imp. Caesar M. Aemilius Aemilianus Augustus) |
253 |
| Valerian (Imp. Caesar P. Licinius Valerianus Augustus) |
253-260 |
| Gallienus (Imp. Caesar P. Licinius Egnatius Gallienus Augustus) |
253-268 |
| Claudius II (Imp. Caesar M. Aurelius Claudius Augustus) |
268-270 |
| Quintillus (Imp. Caesar M. Aurelius Claudius Quintillus Augustus) |
270 |
| Aurelian (Imp. Caesar Domitius Aurelianus Augustus) |
270-275 |
| Tacitus (Imp. Caesar M. Claudius Tacitus Augustus) |
275-276 |
| Florianus (Imp. Caesar M. Annius Florianus Augustus) |
276 |
| Probus (Imp. Caesar M. Aurelius Probus Augustus) |
276-282 |
| Carus (Imp. Caesar M. Aurelius Carus Augustus) |
282-283 |
| Carinus (Imp. Caesar M. Aurelius Carinus Augustus) |
283-285 |
| Numerianus (Imp. Caesar M. Aurelius Numerius Numerianus Augustus) |
283-284 |
| Diocletian (Imp. Caesar C. Aurelius Valerius Diocletianus Augustus) |
284-305 |
| Maximian (Imp. Caesar M. Aurelius Valerius Maximianus Augustus) |
286-305 |
| Constantius (Imp. Caesar Flavius Valerius Constantius Augustus) |
305-306 |
| Galerius (Imp. Caesar C. Galerius Valerius Maximianus Augustus) |
305-311 |
| Severus (Flavius Valerius Severus Augustus) |
306-307 |
| Maxentius (M. Aurelius Valerius Maxentius Augustus) |
306-312 |
| Constantine (Imp. Caesar Flavius Valerius Constantinus Augustus) |
307-337 |
| Licinius (Imp. Caesar Valerius Licinianus Licinius Augustus) |
308-324 |
| Maximin (C. Valerius Galerius Maximinus Augustus) |
308/9-313 |