The fictional world in C.S. Lewis’s Chronicles of Narnia is called Narnia.
Narnia is the principal setting of Lewis’s seven-book fantasy series. It contains talking animals, humans, dwarfs, giants, witches, and other mythical beings, and its history spans many generations and distinct eras.
Aslan, a powerful lion, is the central divine and moral figure in the series. Human children from Earth repeatedly enter Narnia and become involved in events that shape its history. The stories do not all follow publication order or a single group of characters.
Narnia is often confused with other famous fantasy settings, especially Middle-earth from J.R.R. Tolkien’s works. Lewis and Tolkien were friends and members of the literary group known as the Inklings, but Middle-earth belongs to Tolkien, while Narnia belongs to Lewis.