The Third Macedonian War (171–168 BC) was a conflict between the Roman Republic and the Kingdom of Macedon. It arose from tensions following the defeat of King Perseus of Macedon, who sought to expand his territory and influence. The Romans aimed to curb Macedonian power and protect their interests in the region. The war concluded with a decisive Roman victory at the Battle of Pydna in 168 BC. This defeat led to the fall of the Macedonian kingdom, which was subsequently divided into four client republics. The war marked a significant step in the expansion of Roman influence in the Balkans.