Nova might refer to:
- Nova Scotia
- Joanne Nova
- A science show on PBS, which has been hosted by both Carl Sagan and Neil deGrasse Tyson
- A model of Chevrolet automobile, known in Spanish as no va (does not work)
- A Marvel Comics superhero with the secret identity of Richard Rider
- A white dwarf star in a mass-exchange binary system that accretes enough material on its surface to undergo a burst of nuclear fusion
- A Latin adjective meaning "new"