Agis I was a king of Sparta who ruled during the early 3rd century BC. He belonged to the Agid dynasty and is known for his attempts to reform the Spartan society, focusing on restoring the traditional values and military strength of Sparta. His reign was marked by efforts to address economic disparities and promote social equality among the citizens. Agis I's reforms included land redistribution and limiting the power of the wealthy elite. However, his initiatives faced resistance from the established aristocracy, leading to political tensions. Despite his efforts, his reign was relatively short-lived, and he was eventually succeeded by his son, Agis II.