List of civil wars involving Rome. There were several Roman civil wars, especially during the time of the late Republic.

Early Republic

Founded in 509 BC.

Late Republic

• Social War (91–88 BC), between Rome and the Italian nations - Roman victory.

• Sulla's first civil war (88–87 BC), between Lucius Cornelius Sulla's supporters and Gaius Marius' forces - victory to Sulla.

• Sertorius' revolt in Hispania (83–72 BC), between Rome and the provinces of Hispania under the leadership of Sertorius - Roman victory.

• Sulla's second civil war (82–81 BC), between Sulla and Marius' supporters - Sullan victory.

• Lepidus' rebellion (77 BC), when Lepidus rebelled against the Sullan senate.

• Catiline Conspiracy (63–62 BC), between the Senate and the dissatisfied followers of Lucius Sergius Catilina - Senatorial victory.

• Caesar's civil war (49–45 BC), between Julius Caesar and the optimates (conservative republicans), initially led by Pompey - Caesarean victory.

• Post-Caesarian civil war (44 BC), between the Senate army (led first by Cicero and then by Octavian) and the army of Antony, Lepidus, and their colleagues - Truce results in union of forces.

• Liberators' civil war (44–42 BC), between the Second Triumvirate and the Liberators (Brutus and Cassius, Caesar's assassins) - Triumvirate victory.

• Sicilian revolt (44–36 BC), between the Second Triumvirate (particularly Octavian and Agrippa) and Sextus Pompeius, the son of Pompey - Triumvirate victory.

• Fulvia's civil war (41–40 BC), between the forces of Lucius Antonius and Fulvia Antonia (the younger brother and wife of Mark Antony) and Octavian - Octavian victory.

• Final war of the Roman Republic (32–30 BC), between the Western provinces (under the leadership of Octavian and Agrippa) and the East (under Mark Antony and Cleopatra) - Western victory.

Empire

Augustan interval

After 30 BC, the Republic was unified under leadership of Octavian. In 27 BC Octavian was granted the title of Augustus by the Senate. These two dates are considered to mark the end of the Republic and the birth of the Roman Empire. The period of rule by the Caesars was known as the "Pax Augusti" (peace of Augustus), and was the beginning of the era known as the "Pax Romana" (Roman Peace). The next Roman civil war would not be fought until after Nero's suicide in 68 AD, the year before the year of the four emperors.

Early Empire

• Year of the Four Emperors (69 AD ) four emperors, Galba, Otho, Vitellius, and Vespasian, ruled in succession.

From the rule of the Flavian Dynasty until the Year Of The Five Emperors, the Roman Empire experienced an extended period of internal peace and harmony under the rule of The Five Good Emperors - Nerva, Trajan, Hadrian, Antonius Pius and Marcus Aurelius.

Mid Empire

• Year of the Five Emperors (193 AD) where after the first emperor was assassinated and the second executed, the last three, Pescennius Niger, Clodius Albinus, and Septimius Severus fought for the throne.

• Year of the Six Emperors (238 AD) Maximinus Thrax, the reigning emperor, was challenged by many claimants to the throne until he was deposed, and Gordian III became emperor.

• Roman civil war of 284–285 AD, between Diocletian and Carinus - victory to Diocletian.

Late Empire

• Civil Wars of the Tetrarchy (306–324), between the co-emperors of the Roman Empire, starting with the usurpation of Maxentius and the defeat of Severus, and ending with the defeat of Licinius at the hands of Constantine I.

• Roman civil war of 350–351 AD, between Constantius II and Magnentius - victory to Constantius.

• Roman civil war of 360–361 AD, between Constantius II and Julian the Apostate - victory to Julian.

• Roman civil war of 387–388 AD, between Theodosius I and Magnus Maximus - victory to Theodosius I.

• Roman civil war of 394 AD, between Theodosius I and Arbogast - victory to Theodosius I.

• 976–989: Rebellions of Bardas Phokas and Bardas Skleros against Basil II.

• First Palaiologan Civil War (1321, 1322, and 1327–1328)

• Roman Civil war of 1341–1347 between John VI Kantakouzenos and the regency for John V Palaiologos

• Zealots of Thessalonica (1342-1350) - a break-away anti-aristocratic political group taking control of the city, resisting control from Constantinople.

• Roman Civil war of 1352–1354 between John V Palaiologos and John VI Kantakouzenos and Matthew Kantakouzenos

• Revolt of Andronikos IV Palaiologos in 1373

• Morea Revolt (1453)