John Costanza (b. August 14, 1943) is a writer.
John Costanza is an American comic book letterer who have worked for both DC Comics and Marvel Comics. His most important works for DC are the Swamp Thing and The Dark Knight Returns. He has also drawn some important comic books in the media such as The Simpsons comic book, Animaniacs and Looney Tunes.
- John Costanza/Writer
- John Costanza/Penciler
- John Costanza/Inker
- John Costanza/Cover Artist
- John Costanza/Letterer
- John Costanza's Images as a Letterer