Gigas Axe may refer to:
- The weapon from Final Fantasy XIV.
- The weapon from Final Fantasy Crystal Chronicles: My Life as a King.
Gigas is a popular term for races of giants in fantasy games. Gigas is a Greek word meaning "giant," originally used to describe the race of Gigantes in Greek mythology and is used in the scientific name, as the specific epithet, of hundreds of species of animals and dozens of plant species to denote their size.