Gaia or Gaea, in comics, may refer to:
- Gaia (Marvel Comics), a character in the Marvel Universe (an alien mutant and former member of Generation X)
- Gaea (Marvel Comics), a character in the Marvel Universe (Goddess of the Earth)
- Gaia (DC comics), a goddess from DC's Green Lantern comics
- Gaia (My Gaia), a shojo-ai manga comic by chuu
