The Lord of the Rings is an epic fantasy story by J. R. R. Tolkien, a sequel to his earlier work, The Hobbit. It was published in three volumes from 1954 to 1955. Two movie adaptions have been made, the more notable being Peter Jackson's three films released from 2001 to 2003.
For more information on the fictional universe the story takes place in, including lists of characters and locations, see Middle-earth.
The story's titular character is Dark Lord Sauron of Mordor, the primary villain of the work, who created the Ruling Ring to control the nineteen Rings of Power, and is thus the "Lord of the Rings." Sauron, in turn, was the servant of an earlier Dark Lord, Morgoth (Melkor), who is prominent in Tolkien's The Silmarillion, the history of Middle-earth.
Tolkien did not originally intend to write a sequel to The Hobbit, and instead wrote other works, including The Silmarillion as his main work. He also wrote several children's tales, including Roverandom and Farmer Giles of Ham for publication.
For more information, visit The Lord of the Rings Wiki.