Narnia is a fantasy world created by C. S. Lewis as the primary location for his series of seven fantasy novels for children, The Chronicles of Narnia. The world is named after the country of Narnia, where much of the Chronicles takes place.

A fantasy world or fictional world is a world created for fictional media, such as literature, film or games. Typical fantasy worlds feature magical abilities. Some worlds may be a parallel world connected to Earth via magical portals or items ; an imaginary universe hidden within ours ; a fictional Earth set in the remote past or future ; an alternative version of our History ; or an entirely independent world set in another part of the universe.