Nautilus may refer to:
- The airship from Final Fantasy III.
- In Final Fantasy VIII there is a store in Dollet named Nautilus.
- The location and theme from Final Fantasy XIII.
- The item from Final Fantasy XIV.
Nautilus is the fictional submarine captained by Nemo featured in Jules Verne's novels Twenty Thousand Leagues Under the Sea and The Mysterious Island. Verne named the Nautilus after Robert Fulton's real-life submarine Nautilus.The