The Tolkien Legendarium refers to the extensive mythology and fictional universe created by author J.R.R. Tolkien. It encompasses various works, including The Hobbit, The Lord of the Rings, and The Silmarillion, which detail the history, languages, and cultures of Middle-earth. This universe is rich with diverse races such as Elves, Dwarves, and Men, each with their own unique stories and characteristics. Central to the Legendarium is the concept of Eru Ilúvatar, the supreme deity who created the world and its inhabitants. The narratives explore themes of good versus evil, heroism, and the struggle for power, often embodied in artifacts like the One Ring. Tolkien's intricate world-building has influenced countless works of fantasy literature and continues to captivate readers worldwide.