Look up illustrious in Wiktionary, the free dictionary.
Illustrious may refer to:
- HMS Illustrious, five ships in the Royal Navy
- Illustrious (album), a 2008 hip hop album by Big Noyd
- Illustrious class aircraft carrier, a class of aircraft carrier of the Royal Navy
- Mari Illustrious Makinami, fictional character of Rebuild of Evangelion