Acacus (Ancient Greek: Ἄκακος or Ἄκακον means 'harmless, guileless'), in Greek mythology, was a king of Acacesium (Ἀκακήσιον) in Arcadia.
He was one of the 50 sons of the impious King Lycaon[1] either by the naiad Cyllene,[2] Nonacris[3] or by unknown woman.
[4] Maia gave birth to Hermes at dawn in a sacred cave on Mount Cyllene in Arcadia, and he was raised by Acacus.
He was believed to be the founder of the Arcadian town of Acacesium where he was king.
[5] This article relating to Greek mythology is a stub.