Biohazard may refer to:
- Biological hazard, including biohazard levels 1,2,3,4
- Biohazard sign
- Biosafety level
- Biohazard (book), a book by Ken Alibek
- Biohazard (band), a New York heavy metal/rap metal band
- Biohazard (album), a self-titled album from Biohazard
- Biohazard (1988 demo tape)
- Resident Evil, in Japanese Biohazard, a horror fiction video game based media franchise
- Resident Evil (1996 video game), originally released in Japan as Bio Hazard
- Biohazard (film series), a series of animated films in the video game universe
- Discography of the Resident Evil video game series listing several albums named "Biohazard"
- Resident Evil 7: Biohazard, 2017 video game
- BioHazard, a combat robot built by Carlo Bertocchini
- Bio-hazard Battle, a Sega Genesis shoot 'em up game about a planet of mutated monsters
- Biohazard (film), a low budget horror/sci-fi film by Fred Olen Ray
- Biohazzard Records, a German independent record label
Resident Evil REmake - Speed Run (Chris) in 1:33:46 by smilingjack13 - SDA (2005) Gamecube version - Like/Favorite IF you enjoyed the video. =) Current best time as Chris, single-segment. Chris' campaign is the more difficult way to go, but smilingjack makes it looks easy. For me, this game...