阴金羊年 (female Iron-Goat) −102 or −483 or −1255 — to — 阳水猴年 (male Water-Monkey) −101 or −482 or −1254
Year 229 BC was a year of the pre-Julian Roman calendar. At the time it was known as the Year of the Consulship of Albinus and Centumalus (or, less frequently, year 525 Ab urbe condita). The denomination 229 BC for this year has been used since the early medieval period when the Anno Dominicalendar era became the prevalent method in Europe for naming years.
The Illyrian tribe of the Ardiaei is subdued by the Romans.
The King of Macedonia, Demetrius II, dies. His nephew, Antigonus III comes to the Macedonian throne as regent for his half-cousin and the future king Philip V, who is only ten years old.
Concerned at Rome's expansion, Antigonus III pursues a policy of befriending the Illyrians, even though the Greeks in the region support Rome in quelling the Illyrian pirates.
The involvement of Rome in Illyria led to the establishment of friendly relations between Rome and the enemies of Macedonia: the Aetolian League and Achaean League, which approve the suppression of Illyrian piracy.