The Earthsea Cycle, also known as Earthsea, is a series of high fantasy books written by the American author Ursula K. Le Guin. Beginning with A Wizard of Earthsea (1968), The Tombs of Atuan, (1970) and The Farthest Shore (1972), the series was continued in Tehanu (1990), and Tales from Earthsea and The Other Wind. In 2018, all the novels and short stories were published in a single volume, The Books of Earthsea: The Complete Illustrated Edition, with artwork by Charles Vess.

Ursula Kroeber Le Guin was an American author best known for her works of speculative fiction, including science fiction works set in her Hainish universe, and the Earthsea fantasy series. Her work was first published in 1959, and her literary career spanned nearly sixty years, producing more than twenty novels and over a hundred short stories, in addition to poetry, literary criticism, translations, and children's books. Frequently described as an author of science fiction, Le Guin has also been called a "major voice in American Letters". Le Guin said she would prefer to be known as an "American novelist".