| Period of reign | Emperor (s) | Notes |
|---|
| February / March 235 to March / April 238 | I Maximin the Thracian | Murdered by his troops |
| top 238 | Gordian I | Governor in Africa, declared co-emperor with his son Gordian II by popular acclamation. Committed suicide after his defeat against the governor of Numidia. |
| January / March 238 to January / April 238 | Gordian II | Son and co-emperor Gordian I. Killed in the battle against the governor of Numidia. |
| April-July 238 | Pupien and Balbin | Senators elected co-emperors by the Roman Senate after the failure of African Rebellion. Murdered by the Praetorians. |
| May 238 to February 244 | Gordian III | Grand son of Gordian I - Elected by the Roman senate. Killed in the battle against the Persians under Shapur I , by disease or death, or murdered by the prefect praetorian Philip , who succeeded him later under the title of Philip the Arab. |
| 240 | Sabinian | Proclaimed emperor defeated in battle. |
| February 244 to September / October 249 | Philip the Arab | Killed in battle by Decius , near modern Verona. |
| 248 | Pacatianus | Self-proclaimed emperor, murdered by his own soldiers. |
| 248 | Jotapien | By proclamation? |
| 248 | Silbannacus | Usurper |
| 249 to June 251 | Decius | Appointed by Philip the Arab to beat Pacatianus. Proclaimed emperor by the armies of the Danube. Killed in the battle against the Goths. |
| 249 to 252 | Priscus | Governor, self-proclaimed emperor of the eastern provinces, with the support of the Goths. |
| 250 | Julius Valens Licinianus | Usurper proclaimed in Rome, executed by order of the Senate |
| top 251 at 1July 251 | Herennius Etruscus | Co-emperor with his father Decius. Killed in a battle against the Goths. |
| 251 | Hostilianus | Younger brother Herennius Etruscus , whom he succeeded as emperor. His authority did not extend beyond the city of Rome, where he died quickly from an outbreak of plague. |
| June 251 to August 253 | Gallus | Proclaimed emperor by the army after the death of Decius and Herennius Etruscus. Co-emperor with his son Volusien. Killed, with his son, by his own soldiers. |
| July 251 to August 253 | Volusien | Co-emperor with his father Trebonianus Gallus. Killed, with his father, by his own soldiers. |
| August 253 to October 253 | Emilian | Governor of Upper Moesia and Pannonia, who defeated an army Gothe and was proclaimed emperor by his soldiers. Murdered by his own soldiers when they saw they could not beat the army of Valerian , who had avenged Trebonianus Gallus. |
| 253 to June 260 | Valerian | Governor of the Rhine provinces. Co-emperor with Gallienus ; captured by the Persians , died in captivity. |
| 253 to September 268 | Gallien | Co-emperor with Valerian in 253 to 260 , then only one of 260 to 268 ; murdered. |
| 258 or June 260 | Ingenuus | Proclaimed emperor. |
| 260 | Kingly | Proclaimed emperor. |
| 260 to 261 | Macrian | Usurper proclaimed emperor, killed in battle. |
| 260 to 261 | Macrian the Younger | Brother of Quietus ; usurper proclaimed emperor by his father Macrian. |
| 260 to 261 | Quietus | Brother Macrian the Younger ; usurper proclaimed emperor by his father Macrian. |
| 261 to 264 | Ballista | Usurper proclaimed emperor in the East to Emesa , murdered by a soldier. |
| 261 to 261 or 262 | Mussius Aemilianus | Proclaimed emperor. |
| 268 | Aureolus | Proclaimed emperor indulged in the Gothic Claudius II. |
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