Hellboy may refer to:
- Hellboy (character), the comic book character
- Hellboy (series), the comic book series and related media
- Hellboy (2004 film), film adaptation directed by Guillermo del Toro
- Hellboy (2004–2008 film character), film character portrayed by Ron Perlman
- Hellboy (Injustice), version of the character appearing in the video game Injustice 2