Endor is the Quenya name for Middle-earth in J.R.R. Tolkien’s writings.
Tolkien used several names for the central continent of his mythology. Endor, also written Endórë in some contexts, is the Quenya term meaning the “Middle Land” or “Middle-earth.” The Sindarin form is Ennor, showing how the same geographical idea appears differently in Tolkien’s related Elvish languages.
Middle-earth is not the whole of Tolkien’s world. It is a region of Arda, the wider world created by Ilúvatar and shaped by the Valar. Other important regions include Aman, the land to the west, and Beleriand, a western part of Middle-earth that was later destroyed or changed during the wars of the First Age.
The modern phrase “Middle-earth” can mislead readers into imagining a planet or a separate universe. Tolkien’s setting is a mythic version of Earth’s distant past. Endor is therefore a geographical name within Arda, not the name of the entire created world.