A list of all of theRoman dictators andmagistri equitum known from ancient sources. In some cases the names or dates have been inferred by modern historians.
Roman dictators were usually appointed for a specific purpose, orcausa, which limited the scope of their activities. The chiefcausae wererei gerundae (a general purpose, usually to lead an army in the field against a particular enemy),clavi figendi (an important religious rite involving the driving of a nail into the wall of theTemple of Jupiter Optimus Maximus), andcomitiorum habendorum (the holding of thecomitia to electmagistrates, when the consuls were unable to do so).
Othercausae includedludorum faciendorum, holding theLudi Romani (Roman games), an important religious festival;ferarium constituendarum (establishing a religious festival in response to serious prodigies);seditionis sedandae (quelling sedition); and in one remarkable case,senatus legendi (filling up the ranks of theSenate after theBattle of Cannae).
Thecausa given at the very end of the Republic for the dictatorships ofSulla andCaesar are completely novel, as the powers granted greatly exceeded those traditionally accorded a Roman dictator. Bylegibus faciendis et rei publicae constituendae causa, Sulla was empowered to rewrite the laws and revise the constitution of the Roman state; bydictator perpetuo rei publicae constituendae causa, Caesar was appointed dictator in perpetuity, and given the power to revise the constitution.
The variouscausae may not have been legally distinguished from one another prior to 368 BC, whenPublius Manlius Capitolinus was appointed dictatorseditionis sedandae et rei gerundae causa. The precise formula of eachcausa later reported by ancient historians may only date to Manlius' dictatorship, in which case thecausae attributed to earlier dictators must be later additions.[1]
Roman numerals given following a name indicate that the dictator or magister equitum for that year previously held the same magistracy. Thecausae listed in the table are based largely on T. R. S. Broughton'sThe Magistrates of the Roman Republic, reporting those given in ancient sources. For cases in which nocausa is given,rei gerundae may usually be inferred.
| Year BC | Year AUC | Dictator | Magister equitum | Notes |
|---|---|---|---|---|
| 501 | 253 | Titus Larcius Flavus[i] | Spurius Cassius Vecellinus | rei gerundae causa |
| 496 | 255 | Aulus Postumius Albus Regillensis | Titus Aebutius Helva | |
| 494 | 260 | Manius Valerius Volusus Maximus | Quintus Servilius Priscus Structus | |
| 463 | 291 | (Gaius Aemilius Mamercus)[ii] | unknown | clavi figendi causa |
| 458 | 296 | Lucius Quinctius Cincinnatus | Lucius Tarquitius Flaccus | |
| 439 | 315 | Lucius Quinctius Cincinnatus II | Gaius Servilius Ahala | |
| 437 | 317 | Mamercus Aemilius Mamercinus | Lucius Quinctius Cincinnatus | |
| 435 | 319 | Quintus Servilius Priscus Fidenas | Postumus Aebutius Helva Cornicen | |
| 434 | 320 | Mamercus Aemilius Mamercinus II | Aulus Postumius Tubertus | |
| 431 | 323 | Aulus Postumius Tubertus | Lucius Julius Iullus | |
| 426 | 328 | Mamercus Aemilius Mamercinus III | Aulus Cornelius Cossus | |
| 418 | 336 | Quintus Servilius Priscus Fidenas II | Gaius Servilius Axilla | |
| 408 | 346 | Publius Cornelius Rutilus Cossus | Gaius Servilius Ahala |
| Year BC | Year AUC | Dictator | Magister equitum | Notes |
|---|---|---|---|---|
| 287 | 467 | Quintus Hortensiusmortuus est | not recorded | |
| 287 | 467 | Appius Claudius Caecus? | not recorded | dictator suffectus?[xi] |
| 285 | 469 | Marcus Aemilius Barbula? | not recorded | date uncertain.[xii] |
| 280 | 474 | Gnaeus Domitius Calvinus Maximus | not recorded | comitiorum habendorum causa |
| 276 | 478 | Publius Cornelius Rufinus? | not recorded | date uncertain.[xiii] |
| 263 | 491 | Gnaeus Fulvius Maximus Centumalus | Quintus Marcius Philippus | clavi figendi causa |
| 257 | 497 | Quintus Ogulnius Gallus | Marcus Laetorius Plancianus | Latinarum feriarum causa |
| 249 | 505 | Marcus Claudius Glicia | abdicavit[xiv] | |
| 249 | 505 | Aulus Atilius Calatinus | Lucius Caecilius Metellus | |
| 246 | 508 | Tiberius Coruncanius | Marcus Fulvius Flaccus | comitiorum habendorum causa |
| 231 | 523 | Gaius Duilius | Gaius Aurelius Cotta | comitiorum habendorum causa |
| 224 | 530 | Lucius Caecilius Metellus | Numerius Fabius Buteo | comitiorum habendorum causa |
| 221 | 533 | Quintus Fabius Maximus Verrucosus | Gaius Flaminius | date uncertain.[xv] |
| 217 | 537 | Quintus Fabius Maximus Verrucosus II | Marcus Minucius Rufus | Minucius given authority equal to the dictator's.[xvi] |
| 217 | 537 | Lucius Veturius Philo | Marcus Pomponius Matho | comitiorum habendorum causa; abdicavit |
| 216 | 538 | Marcus Junius Pera | Tiberius Sempronius Gracchus | |
| 216 | 538 | Marcus Fabius Buteo | sine magistro equitum | senatus legendi causa[xvii] |
| 213 | 541 | Gaius Claudius Centho | Quintus Fulvius Flaccus | comitiorum habendorum causa |
| 210 | 544 | Quintus Fulvius Flaccus | Publius Licinius Crassus Dives | comitiorum habendorum causa |
| 208 | 546 | Titus Manlius Torquatus | Gaius Servilius Geminus | comitiorum habendorum et ludorum faciendorum causa |
| 207 | 547 | Marcus Livius Salinator | Quintus Caecilius Metellus | comitiorum habendorum causa |
| 205 | 549 | Quintus Caecilius Metellus | Lucius Veturius Philo | comitiorum habendorum causa |
| 203 | 551 | Publius Sulpicius Galba Maximus | Marcus Servilius Pulex Geminus | comitiorum habendorum causa |
| 202 | 552 | Gaius Servilius Geminus | Publius Aelius Paetus | comitiorum habendorum causa |
| Year BC | Year AUC | Dictator | Magister equitum | Notes |
|---|---|---|---|---|
| 82–79 | 672–675 | Lucius Cornelius Sulla Felix | Lucius Valerius Flaccus | legibus faciendis et rei publicae constituendae causa |
| 49 | 705 | Gaius Julius Caesar | sine magistro equitum | rei gerundae causa |
| 48 | 706 | Gaius Julius Caesar II | Marcus Antonius | |
| 47–44 | 707–710 | Gaius Julius Caesar III | Marcus Aemilius Lepidus | |
| 44 | 710 | Gaius Julius Caesar IVoccisus est | Marcus Aemilius Lepidus II Gaius Octavius Gnaeus Domitius Calvinus (non iniit) | dictator perpetuo rei publicae constituendae causa |