Centuries: 2nd century - 3rd century - 4th century
Decades: 160s 170s 180s 190s 200s - 210s - 220s 230s 240s 250s 260s
Years: 209 210 211 212 213 - 214 - 215 216 217 218 219
- The kingdom of Osroene becomes a province of the Roman Empire.
- Aurelian, Roman emperor
- Claudius II, Roman emperor
- Diophantus, Greek mathematician (possible date)