Atys may mean:
Atys was a king of Alba Longa.
Atys father of Lydus was an early king of Lydia, father of Lydus.
Atys son of Croesus was the son of the later King Croesus of Lydia.
Attis, a Phrygian/Roman deity
Atys , a trag├ędie lyrique by Jean-Baptiste Lully
Atys , a genus of mollusc, also known as Atys Bubble Shells.
Atys is also the name of the planet that is the setting of the Saga of Ryzom MMORPG