The Battle of Mount Lycaeum was fought between Sparta led by Cleomenes III and the Achaean League commanded by Aratus.

The battle occurred at Mount Lycaeum on the border of Elis and Arcadia and ended in a Spartan victory.

In 229 BC, Cleomenes III, King of Sparta, initiated a campaign with the aim of extending the regional power of his kingdom.

[1] Though these failures were offset to some extent by the occupation of Caphyae, a city that had previously been taken over by Cleomenes, the Spartan ascendancy in the war was becoming apparent.

[4] They managed to capture a great part of the Achaean army as well as inflicting massive casualties.