209 BCCenturies: 4th century BC - 3rd century BC - 2nd century BC
- Second Punic War: The Romans conquer Carthago Nova, the most important city in Carthaginian Spain.
- Second Punic War: Fabius Maximus conquers Tarrentum.
- Antiochus III the Great defeats the Parthians in the Battle of the Arius
- Hannibal defeats Marcus Claudius Marcellus once again in the indecisive Battle of Asculum.
- Er Shi becomes Emperor of the Qin Dynasty of China.