189 BC

Millennium:	1st millennium BC
Centuries:	3rd century BC – 2nd century BC – 1st century BC
Decades:	210s BC 200s BC 190s BC – 180s BC – 170s BC 160s BC 150s BC
Years:	192 BC 191 BC 190 BC – 189 BC – 188 BC 187 BC 186 BC

189 BC by topic
Politics
State leaders – Sovereign states
Birth and death categories
Births – Deaths
Establishments and disestablishments categories
Establishments – Disestablishments

Events

Cato the Elder criticizes the consul Marcus Fulvius Nobilior for giving awards to Roman soldiers for doing ordinary tasks such as digging wells.

The defeat of Antiochus III by the Romans in the Battle of Magnesia robs the Aetolian League of its principal foreign ally and makes it impossible for them to stand alone in continued opposition to Rome. The League is forced to sign a peace treaty with Rome that makes it a subject ally of the Republic. Although the League continues to exist in name, the power of the League is broken by the treaty and it never again constitutes a significant political or military force.

The Romans under consul Gnaeus Manlius Vulso, along with a Pergamene army under Eumenes II, defeat the Galatians in Anatolia and make them subjects of Pergamum.
The city of Philadelphia (now Alaşehir, Turkey) is founded by King Eumenes II of Pergamon. Eumenes names the city after his brother, Attalus, whose loyalty earns him the nickname, "Philadelphus", literally meaning "one who loves his brother".

Zhang Liang, Chinese rebel and taoist, who has helped Liu Bang establish the Han Dynasty