Cetus may refer to:
- The boss from Final Fantasy XIV.
- The creature from Final Fantasy: The 4 Heroes of Light.
- The enemy from Final Fantasy Brave Exvius.
Cetus was a large fish, a whale, a shark, or a sea monster. Although it is often called 'the whale' today. The sea monsters slain by Perseus and Heracles. Cetus is also a constellation that is sometimes included in certain Zodiac systems.In Greek mythology,