| A | B |
|---|
| Julius Caesar | He was not officially an emperor, but he does mark the end of the Roman Republic |
| Caesar Augustus | The first Roman emperor, his reign marks the start of the Pax Romana |
| Tiberius | He succeeded Augustus and was not very popular with the Roman people. |
| Caligula | At first he was very popular, but later began to behave in an eccentric manner. For example, he named his horse to the Roman Senate. |
| Claudius | Although he has a speech impediment and walked with a limp, he provided strong leadership. Rome conquered Britain during his reign. |
| Nero | Rome experienced a major fire during his reign, rumored to have been started by the emperor himself. He is also known for his harsh persecution of Christians. |
| Vespasian | He was the first of the Flavian emperors, he began construction on the Colosseum. |
| Hadrian | He built a large defensive wall in Britain. He was also emperor during the building of the Pantheon |
| Trajan | The Roman Empire was at its largest during this man's reign. He also was responsible for building the Roman Forum. |
| Marcus Aurelius | The last of the Five Good Emperors, he was a philosopher-king. |
| Vespasian, Titus, Domitian | Flavian Emperors |
| Nerva, Trajan, Hadrian, Antoninus Pius, and Marcus Aurelius | Five Good Emperors |
| Augustus, Tiberius, Caligula, Claudius, Nero | Julio-Claudian Emperors |
| Constantine | Allowed freedom of religion and relocated the Roman capital |
| Theodosius | Declared Christianity the official religion of the Roman Empire |
