This is a list of demons that appear in fiction as distinct from legend or belief.

Submarines and iPads appeared in fiction before they were invented.

That's a concept that wouldn't have appeared out of place in slick-magazine fiction of the 1950's.

Rōnin appear frequently in fiction and Japanese popular culture.

These are not as well known and do not often appear in fiction.

Groundskeepers have appeared occasionally as minor characters in fiction and moving images.

Another element that appears often in Gothic fiction is the existence of the uncanny.

This is a characteristic which has appeared increasingly widely in post-war British fiction.

Fullerenes appeared in fiction well before scientists took serious interest in them.

This crucial economic notion of opportunity cost appears prominently in fiction.