Firestar may refer to:
- Firestar (Marvel Comics), a comic book superhero originating in the 1980s animated series Spider-Man and His Amazing Friends
- Firestar (novel), a novel by Michael Flynn
- Fire Star (novel), a novel by Chris D'Lacey
- Firestar (Transformers), a character in the many continuities in the Transformers franchise.
- Firestar (limited series), a comic book limited series
- Star Firestar M43, a firearm manufactured by Star Bonifacio Echeverria, S.A. in Eibar, Spain
- Kolb Firestar, an ultralight aircraft