305
| Years: 301 302 303 304 – 305 – 306 307 308 309 | |
| Decades: 270s 280s 290s – 300s – 310s 320s 330s | |
| Centuries: 3rd century – 4th century – 5th century | |
Events
- May 1 – Diocletian and Maximian, emperors of Rome, retire from office.
- Constantius Chlorus and Galerius declared Augusti; Flavius Valerius Severus and Maximinus Daia appointed Caesars.
- The Arch of Galerius is built.
Births
Deaths
- Hierocles, proconsul of Bithynia who instigated the persecution of the Christians under Galerius
- Porphyry, Neoplatonist philosopher
Categories: 305