Lycurgus, in Greek mythology, was the king of Arcadia. He was the son of Aleus, the previous ruler, and Neaera, daughter of Pereus. Lycurgus married either Cleophyle, Eurynome or Antinoe and fathered these sons: Ancaeus, Epochus, Amphidamas, and Iasius.
Lycurgus was said to have killed Areithous whom he attacked unexpectedly in a narrow passage where Areithous' famous club was useless. He took Areithous' armor as spoils and wore it himself, but handed it over to Ereuthalion when he had grown old. According to scholia on the Argonautica, Ereuthalion was also vanquished by Lycurgus, who laid an ambush against him and overcame him in the ensuing battle. The Arcadians celebrated a feast known as Moleia in commemoration of this mythical event (mōlos being a word for "battle" according to the scholiast), and paid general honors to Lycurgus.