Glorfindel is a fictional character in J. R. R. Tolkien's Middle-earth legendarium. He is a member of the Noldor, one of the three groups of the Calaquendi or High Elves. The character and his name, which means "blond" or "golden-haired", were among the first created for what would become part of his Middle-earth legendarium in 1916–17, beginning with the initial draft of The Fall of Gondolin. His name indicates his hair as a mark of his distinction, as the Noldor were generally dark-haired. A character of the same name appears in the first book of The Lord of the Rings, The Fellowship of the Ring, which takes place in Middle-earth's Third Age. Within the story, he is depicted as a powerful Elf-lord who could withstand the Nazgûl, wraith-like servants of Sauron, and holds his own against some of them single-handedly. Glorfindel and a version of the story of the Fall of Gondolin appear in The Silmarillion, posthumously published in 1977.

The Lord of the Rings is an epic high fantasy novel by the English author and scholar J. R. R. Tolkien. Set in Middle-earth, the story began as a sequel to Tolkien's 1937 children's book The Hobbit, but eventually developed into a much larger work. Written in stages between 1937 and 1949, The Lord of the Rings is one of the best-selling books ever written, with over 150 million copies sold.