Alien Species (science fiction)

• List of aliens in fiction
• List of fictional robots

Fantasy Species (fantasy fiction)

• List of species in fantasy fiction
• List of dragons in literature

Legendary and Mythical Species (folklore/mythology)

• List of species in folklore and mythology
  • List of species in folklore and mythology by type
  • List of Greek mythological creatures
  • List of giants in folklore and mythology
• List of specific demons and types of demons
• List of dragons

Cryptids and Disputed Species

• Cryptozoology

Humanoid species

• List of fictional humanoid species