Thule is a mythical place, believed by occultist Nazis, in particular the Thule Gesellschaft and Karotechia, to be the original homeland of an Aryan race of magical giants. Some legends place it in the far north and connect it with Hyperborea.

In the novel Denied to the Enemy, Thule is revealed to be the ancient city found in the Congo, Africa, which features in Howard Phillips Lovecraft's story, Some facts in the case of the late Arthur Jermyn. It was built by the Great Race of Yith using artificially evolved, pre-human slaves.

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