149 BCCenturies: 3rd century BC - 2nd century BC - 1st century BC
- Third Punic War declared; Rome lands an army in Africa to begin the Battle of Carthage.
- With Roman help, Nicomedes II overthrows his father Prusias II as king of Bithynia.
- Andriscus, the last king of Macedon, ascends to the throne.
- Servius Sulpicius Galba is prosecuted for corruption while serving in Spain, but is acquitted after he parades his weeping family members before the tribunal.