There are a number of lists of fictional species:
Extraterrestrial
- List of fictional extraterrestrials (by media type)
- Lists of fictional alien species: A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P, Q, R, S, T, U, V, W, X, Y, Z
Humanoid
- Lists of humanoids
- Literature
- Comics
- Television
- Film
- Video games
- Paleoanthropological hoaxes
- Cardiff Giant
- Nebraska Man
- Piltdown Man
- Freak show
- Humanzee
- List of fictional extraterrestrials
Legendary
- List of legendary creatures
- List of legendary creatures by type
- List of giants in mythology and folklore
- Vampire folklore by region
Mythical
- Legendary creatures of the Argentine Northwest region
- Mythical creatures in Burmese folklore
- List of Greek mythological creatures
- List of legendary creatures from Japan
- List of Philippine mythological creatures
- Supernatural beings in Slavic folklore
Plants and fungi
- List of fictional plants
Reptilian
- List of dragons
- List of dragons in mythology and folklore
- List of dragons in literature
- List of dragons in popular culture
- List of dragons in film and television
- List of dragons in games
- List of fictional dinosaurs
Theological
- List of fictional angels
- List of fictional demons