This is a list of fictional universes, in which multiple works have occurred outside a single series or within a series across multiple media, either in an unnamed universe, a hypothetical future universe or in a fictional locale in our current present or past, while excluding any number of works that could reasonably be assumed to exist within the current understanding of our own universe or exist solely in a single series and medium. This list is organized by the original medium in which the universe exists.
a place in which supernatural phenomena exist, and supernatural evil can be challenged by people willing to fight against such forces and the setting of Buffy the Vampire Slayer and Angel series are set.
A large number of prefabricated fantasy worlds specifically tailored to the rules of the Dungeons & Dragons role playing game. Notable examples include Greyhawk, Forgotten Realms and Krynn.
where Disney cartoon characters Donald Duck and Scrooge McDuck live. It is a spin off of the older Mickey Mouse universe, yet has become much more extensive.
Where some cartoon characters created by the The Walt Disney Company live, the most famous of which is Mickey Mouse. It is coexistent with the Duck universe,
a dystopian future where the Earth has been badly damaged by a series of international conflicts, much of the planet has turned into radioactive wasteland, and populations have aggregated in enormous mega-cities.
a fictional shared universe where the comic books published by Wildstorm take place. It represents an alternate history of the real world where ideas such as interstellar travel and superhuman abilities are commonplace.
The fictional universe of J. K. Rowling's Harry Potter series of fantasy novels comprises two separate and distinct societies: a Muggle (non-magical) world (corresponding almost entirely to to our own world (during the time between 1981 and 2017 (mainly 1991 to 1998))) and a "wizarding world" (consisting of various magically hidden places throughout the British Isles and the rest of the world) (Note that in many places Muggles and wizards/witches live side by side, but that the vast majority of Muggles are unaware of this.).
