Eryx may refer to: Eryx (Sicily), an ancient city in Sicily, the modern Erice, Italy Mount Eryx, upon which the city stood, the modern Mount Erice Eryx (mythology), a mythological king of the Sicilian city of Eryx, and boxer killed by Heracles Eryx (missile), an anti-tank missile Eryx (snake), a genus of snakes "In the Walls of Eryx", a short story by H. P. Lovecraft and K. J. Sterling