Avos Dilhevia may refer to:
- Lay Grandsley, the reincarnation of the Hero Kanon, who created the fictional Demon King of Tyranny "Avos Dilhevia" as a scapegoat for humanity's hatred. He assumed the identity of "Avos Dilhevia" and was planning on sacrificing himself to appease their hatred.
- Misa Iliorogue, the Great Spirit who was born from the rumors and legends of the Demon King of Tyranny. Though normally a schoolgirl in her transient form, she can awaken her true form of Avos Dilhevia.