Mythos is a Greek word meaning "story, legend" and may refer to:
- Myth or Mythology
- The shared elements, characters, settings and themes in a set of works, e.g. Cthulhu Mythos
In games and comics:
- Mythos (card game), an Origins Award-winning card game by Chaosium released in 1996
- Mythos (computer game), a computer game under development in 2007 by Flagship Studios
- Mythos Games, a former computer and video game developer
- Myth-OS (portal), a video web portal exploring old and new allegorical myths[1]
- Mythos (comic book), a Greek comic book resembling Conan the Barbarian with elements of Greek mythology and history
In music:
- Mythos (band), a Krautrock band
- Mythos Band, a Greek band, based in San Jose, California
- Mythos (musical project), a Canadian music project
- Other uses
- Mythos (beer), a brand of Greek beer
- Ferrari Mythos, a concept car
- Mythos (restaurant), at the Universal Orlando Resort
- Mythos (software), an iscsi hardware and software storage solution designed specifically for Macintosh OSX
- Mythos (film), multi-part documentary on Joseph Campbell
