218
| Years: 214 215 216 217 - 218 - 219 220 221 222 | |
| Decades: 180s 190s 200s - 210s - 220s 230s 240s | |
| Centuries: 2nd century - 3rd century - 4th century | |
Events
- May 16 - Heliogabalus is acclaimed as Roman Emperor.
- June 8 - Heliogabalus defeats Macrinus in battle. Macrinus flees, but is captured and executed some days later.
Births
- October 1 - Alexander Severus, later Roman emperor
- Gallienus, later Roman emperor
Deaths
- June - Macrinus, Roman emperor
- June - Diadumenian, son of Macrinus
- Yue Jin, commander of Cao Cao
