• Born year: 0244
  • Born in: Solin, Croatia
  • Death year: 0311
  • Death in: Split, Croatia

Diocletian (Latin: Gaius Aurelius Valerius Diocletianus Augustus) (245–311) was Roman emperor from 284 to 305. Born to a family of low status in the Roman province of Dalmatia, Diocletian rose through the ranks of the military to become cavalry commander to the Emperor Carus. After the deaths of Carus and his son Numerian on campaign in Persia, Diocletian was proclaimed emperor.