The Nightmare Land is a dark world comprised entirely of all bad dreams and home to the Nightmare King. It is a location featured in the 1989 animated adventure fantasy movie Little Nemo: Adventures in Slumberland based on the 1905 comic strip Little Nemo in Slumberland.
Not much is known about the Nightmare Land other than this horrid wasteland represents all the fear and darkness of the world's nightmares. The location of the dark world appears to be through a whirlpool.
The Nightmare Castle serves as the capital of the Nightmare Land itself.
- The Nightmare Land made an appearance in the 1987 animated pilot film version of Little Nemo: Adventures in Slumberland (also known as "Nemo").