Aethyr

Aethyr or æthyr may refer to:


 * an archaic spelling of ether
 * Aethyrs, in Enochian magic
 * Aethyr, a fictional character in the Phantom Zone of DC Comics
 * Aethyr, a fictional character in Smallville (season 5)
 * Aethyr, a fifth element in the Cthulhu Mythos
 * Aethyr, a disciple of General Zod in DC comics
 * The Aethyr, in the Warhammer Fantasy universe